US4901369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave transmitter/receiver apparatus
Assignee: NEC Corp
•
Filing: 1988-11-03
•
Granted: 1990-02-13
•
Expires: 2008-11-03
Abstract
Abstract The invention eliminates polarization problems and feeder waveguide loss in a miniature microwave transmitter/receiver. This is done by providing a massive heat sink, metal housing with a primary radiator which is rotatably mounted on the end of the housing. Polarization is accomplished by rotating the radiator on the housing. Inside the housing there is a hybrid of integrated circuits mounted on internal parts of the housing which provide both heat sinking and waveguide functions.
Inventors
- 👤 Masao Momose
- 👤 Kazuo Kosukegawa
- 👤 Noriyuki Asari
- 👤 Hirohisa Ozawa
- 👤 Yuhei Kosugi
- 👤 Osamu Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:57
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/247; H01Q1/125; H01Q19/00; H01Q19/10; H01Q19/12; H01Q19/13
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
203 words
A microwave transmitter/receiver apparatus comprising: a housing having a front shaft portion and a rear shaft portion, said housing having a central partition plate; a primary radiator adapted for wave radiation; a transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and a receive input, at least the transmit/receive multiplexer being a waveguide circuit in the central partition plate of the housing; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; means for accommodating the transmit/receive multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing; means for mounting the primary radiator in an opening in the housing; and support means coupled to said front and rear shaft portions for rotatably supporting the housing to turn about a wave radiation axis of the housing support means, thereby controlling the plane of a wave polarization.
Claim 2
Dependent Claim
203 words
A microwave transmitter/receiver apparatus comprising: a housing having a front shaft portion and a rear shaft portion, said housing having a central partition plate; a primary radiator adapted for wave radiation; a transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and a receive input, at least the transmit/receive multiplexer being a waveguide circuit in the central partition plate of the housing; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; means for accommodating the transmit/receive multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing; means for mounting the primary radiator in an opening in the housing; and support means coupled to said front and rear shaft portions for rotatably supporting the housing to turn about a wave radiation axis of the housing support means, thereby controlling the plane of a wave polarization.
Claim 3
Dependent Claim
135 words
A microwave transmitter/receiver apparatus comprising: a housing having a central partition plate; a primary radiator; a transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and a receive input; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; means for accommodating the transmit/receive multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing; at least the multiplexer being a waveguide circuit in the central partition plate.
Claim 4
Dependent Claim
135 words
A microwave transmitter/receiver apparatus comprising: a housing having a central partition plate; a primary radiator; a transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and a receive input; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; means for accommodating the transmit/receive multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing; at least the multiplexer being a waveguide circuit in the central partition plate.
Claim 5
Dependent Claim
25 words
A microwave transmitter/receiver apparatus as claimed in claim 2, wherein the transmit and the receive filters are a waveguide circuit in the central partition plate.
Claim 6
Dependent Claim
28 words
A microwave transmitter/receiver apparatus as claimed in claim 2, further comprising support means for rotatably supporting the housing to turn about a wave radiation axis of the housing.
Claim 7
Dependent Claim
23 words
A microwave transmitter/receiver apparatus as claimed in claim 4, wherein said support means includes means for locking the housing in an angular position.
Claim 8
Dependent Claim
45 words
A microwave transmitter/receiver apparatus as claimed in claim 2, wherein the primary radiator has a center axis and is mounted in a front end portion of the housing, said center axis of the primary radiator being aligned with a wave radiation axis of the housing.
Claim 9
Dependent Claim
46 words
A microwave transmitter/receiver apparatus as claimed in claim 2, wherein an input/output connector is connected to both the IF signal input of the transmit means and the IF signal output of the receive means, said connector being mounted in a rear end portion of the housing.
Claim 10
Dependent Claim
26 words
A microwave transmitter/receiver apparatus as claimed in claim 2, and a plurality of heat radiation fins distributed substantially uniformly on an outer periphery of the housing.
Claim 11
Dependent Claim
28 words
A microwave transmitter/receiver apparatus as claimed in claim 2, further comprising a multiplexer for multiplexing the transmit IF signal, the receive IF signal, and a DC power signal.
Claim 12
Dependent Claim
57 words
A microwave transmitter/receiver apparatus as claimed in claim 2, wherein the transmit means includes a first mixer for mixing the transmit IF signal with a common local signal to produce the transmit signal and the receive means includes a second mixer for mixing the receive signal with the common local signal to produce the receive IF signal.
Claim 13
Dependent Claim
186 words
A microwave transmitter/receiver apparatus comprising: a housing having a front shaft portion, and a rear shaft portion, said housing having a central partition plate; a primary radiator; a transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and a receive input, at least the multiplexer being a waveguide circuit in the central partition plate of the housing; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; support means coupled to the front and rear shaft portions for rotatably supporting the housing to enable it to turn about a wave radiation axis of the housing thereby controlling the plane of a wave polarization; and means for accommodating the multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing.
Claim 14
Dependent Claim
186 words
A microwave transmitter/receiver apparatus comprising: a housing having a front shaft portion, and a rear shaft portion, said housing having a central partition plate; a primary radiator; a transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and a receive input, at least the multiplexer being a waveguide circuit in the central partition plate of the housing; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; support means coupled to the front and rear shaft portions for rotatably supporting the housing to enable it to turn about a wave radiation axis of the housing thereby controlling the plane of a wave polarization; and means for accommodating the multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing.
Claim 15
Dependent Claim
191 words
A microwave transmitter/receiver apparatus comprising: a housing having a front shaft portion, and a rear shaft portion, said housing having a central partition plate; a primary radiator; a transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and a receive input; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer, the multiplexer and the transmit and the receive filters being a waveguide circuit in the central partition plate of the housing; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; support means coupled to the front and rear shaft portions for rotatably supporting the housing to enable it to turn about a wave radiation axis of the housing thereby controlling the plane of a wave polarization; and means for accommodating the multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing.
Claim 16
Dependent Claim
191 words
A microwave transmitter/receiver apparatus comprising: a housing having a front shaft portion, and a rear shaft portion, said housing having a central partition plate; a primary radiator; a transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and a receive input; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer, the multiplexer and the transmit and the receive filters being a waveguide circuit in the central partition plate of the housing; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; support means coupled to the front and rear shaft portions for rotatably supporting the housing to enable it to turn about a wave radiation axis of the housing thereby controlling the plane of a wave polarization; and means for accommodating the multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing.
Claim 17
Dependent Claim
159 words
A microwave transmitter/receiver apparatus comprising: a housing having a central partition plate; a primary radiator adapted for wave radiation; a transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and a receive input; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; and receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; means for accommodating the transmit/receive multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing; and means for mounting the primary radiator in an opening in the housing, wherein at least the transmit/receive multiplexer is a wave guide circuit in the central partition plate of the housing.
Claim 18
Dependent Claim
159 words
A microwave transmitter/receiver apparatus comprising: a housing having a central partition plate; a primary radiator adapted for wave radiation; a transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and a receive input; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; and receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; means for accommodating the transmit/receive multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing; and means for mounting the primary radiator in an opening in the housing, wherein at least the transmit/receive multiplexer is a wave guide circuit in the central partition plate of the housing.
Claim 19
Dependent Claim
28 words
A microwave transmitter/receiver apparatus as claimed in claim 13, further comprising support means for rotatably supporting the housing to turn about a wave radiation axis of the housing.
Claim 20
Dependent Claim
25 words
A microwave transmitter/receiver apparatus as claimed in claim 13, wherein the housing has a front shaft portion including the opening and a rear shaft portion.
Claim 21
Dependent Claim
40 words
A microwave transmitter/receiver apparatus as claimed in claim 15, wherein the rear shaft portion is provided with an input/output connector connected to both the IF signal input of the transmit means and the IF signal output of the receive means.
Claim 22
Dependent Claim
44 words
A microwave transmitter/receiver apparatus as claimed in claim 15, further comprising support means coupled to the front and rear shaft portions for rotatably supporting the housing to turn about a wave radiation axis of the housing, thereby changing the plane of a wave polarization.
Claim 23
Dependent Claim
23 words
A microwave transmitter/receiver apparatus as claimed in claim 17, wherein the support means includes means for locking the housing in an angular position.
Claim 24
Dependent Claim
28 words
A microwave transmitter/receiver apparatus as claimed in claim 13, further comprising a multiplexer for multiplexing the transmit IF signal, the receive IF signal, and a DC power signal.
Claim 25
Dependent Claim
57 words
A microwave transmitter/receiver apparatus as claimed in claim 13, wherein the transmit means includes a first mixer for mixing the transmit IF signal with a common local signal to produce the transmit signal, and the receive means includes a second mixer for mixing the receive signal with the common local signal to produce the receive IF signal.
Claim 26
Dependent Claim
201 words
A microwave transmitter/receiver apparatus comprising: a housing having a front shaft portion and a rear shaft portion; a primary radiator adapted for wave radiation; a transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and a receive input; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; means for accommodating the transmit/receive multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing; means for mounting the primary radiator in an opening in the housing; support means coupled to said front and rear shaft portions for rotatably supporting the housing to turn about a wave radiation axis of the housing support means, thereby controlling the plane of a wave polarization; and a multiplexer for multiplexing the transmit IF signal, the receive IF signal, and a DC power signal on a single coaxial cable.
Claim 27
Dependent Claim
201 words
A microwave transmitter/receiver apparatus comprising: a housing having a front shaft portion and a rear shaft portion; a primary radiator adapted for wave radiation; a transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and a receive input; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; means for accommodating the transmit/receive multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing; means for mounting the primary radiator in an opening in the housing; support means coupled to said front and rear shaft portions for rotatably supporting the housing to turn about a wave radiation axis of the housing support means, thereby controlling the plane of a wave polarization; and a multiplexer for multiplexing the transmit IF signal, the receive IF signal, and a DC power signal on a single coaxial cable.
Claim 28
Dependent Claim
181 words
A microwave transmitter/receiver apparatus comprising: a housing having a front shaft portion, and a rear shaft portion; a primary radiator; a transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and a receive input; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; support means coupled to the front and rear shaft portions for rotatably supporting the housing to enable it to turn about a wave radiation axis of the housing thereby controlling the plane of a wave polarization; means for accommodating the multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing; and a multiplexer means for multiplexing the transmit IF signal, the receive IF signal, and a DC power signal.
Claim 29
Dependent Claim
181 words
A microwave transmitter/receiver apparatus comprising: a housing having a front shaft portion, and a rear shaft portion; a primary radiator; a transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and a receive input; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; support means coupled to the front and rear shaft portions for rotatably supporting the housing to enable it to turn about a wave radiation axis of the housing thereby controlling the plane of a wave polarization; means for accommodating the multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing; and a multiplexer means for multiplexing the transmit IF signal, the receive IF signal, and a DC power signal.
Claim 30
Dependent Claim
158 words
A microwave transmitter/receiver apparatus comprising: a housing having a central partition plate; a primary radiator; a transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and a receive input; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; support means for rotatably supporting the housing to enable it to turn about a wave radiation axis of the housing; and means for accommodating the multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing, whereby at least the multiplexer is a waveguide circuit in the central partition of the housing.
Claim 31
Dependent Claim
158 words
A microwave transmitter/receiver apparatus comprising: a housing having a central partition plate; a primary radiator; a transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and a receive input; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; support means for rotatably supporting the housing to enable it to turn about a wave radiation axis of the housing; and means for accommodating the multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing, whereby at least the multiplexer is a waveguide circuit in the central partition of the housing.
Claim 32
Dependent Claim
57 words
A microwave transmitter/receiver apparatus as claimed in claim 23, wherein the transmit means includes a first mixer for mixing the transmit IF signal with a common local signal to produce the transmit signal, and the receive means includes a second mixer for mixing the receive signal with the common local signal to produce the receive IF signal
Claim 33
Dependent Claim
170 words
A microwave transmitter/receiver apparatus comprising: a housing; a primary radiator; a first transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and receive input; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; means for accommodating the transmit/receive multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing; a second multiplexer for multiplexing the transmit IF signal, the receive IF signal, and a DC power signal on a single coaxial cable; at least the first multiplexer being a waveguide circuit in the housing; and support means for rotatably supporting the housing to turn about a wave radiation axis of the housing.
Claim 34
Dependent Claim
170 words
A microwave transmitter/receiver apparatus comprising: a housing; a primary radiator; a first transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and receive input; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; means for accommodating the transmit/receive multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing; a second multiplexer for multiplexing the transmit IF signal, the receive IF signal, and a DC power signal on a single coaxial cable; at least the first multiplexer being a waveguide circuit in the housing; and support means for rotatably supporting the housing to turn about a wave radiation axis of the housing.
Claim 35
Dependent Claim
23 words
A microwave transmitter/receiver apparatus as claimed in claim 25, wherein said support means includes means for locking the housing in an angular position.
Claim 36
Dependent Claim
187 words
A microwave transmitter/receiver apparatus comprising: a housing; a primary radiator, the primary radiator having a center axis and being mounted in a front end portion of the housing, said center axis of the primary radiator being aligned with a wave radiation axis of the housing; a first transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and receive input; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; means for accommodating the transmit/receive multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing; a second multiplexer for multiplexing the transmit IF signal, the receive IF signal, and a DC power signal on a single coaxial cable; at least the first multiplexer being a waveguide circuit in the housing.
Claim 37
Dependent Claim
187 words
A microwave transmitter/receiver apparatus comprising: a housing; a primary radiator, the primary radiator having a center axis and being mounted in a front end portion of the housing, said center axis of the primary radiator being aligned with a wave radiation axis of the housing; a first transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and receive input; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; means for accommodating the transmit/receive multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing; a second multiplexer for multiplexing the transmit IF signal, the receive IF signal, and a DC power signal on a single coaxial cable; at least the first multiplexer being a waveguide circuit in the housing.
Claim 38
Dependent Claim
190 words
A microwave transmitter/receiver apparatus comprising: a housing; a primary radiator; a first transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and receive input; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; means for accommodating the transmit/receive multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing; a second multiplexer for multiplexing the transmit IF signal, the receive IF signal, and a DC power signal on a single coaxial cable; at least the first multiplexer being a waveguide circuit in the housing; and an input/output connector connected to both the transmit IF signal input of the transmit means and the receive IF signal output of the receive means, said connector being mounted in a rear end portion of the housing.
Claim 39
Dependent Claim
190 words
A microwave transmitter/receiver apparatus comprising: a housing; a primary radiator; a first transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and receive input; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; means for accommodating the transmit/receive multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing; a second multiplexer for multiplexing the transmit IF signal, the receive IF signal, and a DC power signal on a single coaxial cable; at least the first multiplexer being a waveguide circuit in the housing; and an input/output connector connected to both the transmit IF signal input of the transmit means and the receive IF signal output of the receive means, said connector being mounted in a rear end portion of the housing.
Claim 40
Dependent Claim
168 words
A microwave transmitter/receiver apparatus comprising: a housing, a plurality of heat radiating fins distributed substantially uniformly on an outer periphery of the housing; a primary radiator; a first transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and receive input; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; means for accommodating the transmit/receive multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing; a second multiplexer for multiplexing the transmit IF signal, the receive IF signal, and a DC power signal on a single coaxial cable; at least the first multiplexer being a waveguide circuit in the housing.
Claim 41
Dependent Claim
168 words
A microwave transmitter/receiver apparatus comprising: a housing, a plurality of heat radiating fins distributed substantially uniformly on an outer periphery of the housing; a primary radiator; a first transmit/receiver multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and receive input; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; means for accommodating the transmit/receive multiplexer, the transmit and the receive filters, the transmit means and the receive means in the housing; a second multiplexer for multiplexing the transmit IF signal, the receive IF signal, and a DC power signal on a single coaxial cable; at least the first multiplexer being a waveguide circuit in the housing.
Claim 42
Dependent Claim
148 words
A microwave transmitter/receiver apparatus comprising: a housing, said housing having a central partition plate; a primary radiator; a transmit/receiver first multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and a receive input, at least the first multiplexer being a waveguide circuit in the central partition plate of the housing; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; support means for rotatably supporting the housing to enable it to turn about a wave radiation axis of the housing for controlling the plane of a wave polarization.
Claim 43
Dependent Claim
148 words
A microwave transmitter/receiver apparatus comprising: a housing, said housing having a central partition plate; a primary radiator; a transmit/receiver first multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and a receive input, at least the first multiplexer being a waveguide circuit in the central partition plate of the housing; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; support means for rotatably supporting the housing to enable it to turn about a wave radiation axis of the housing for controlling the plane of a wave polarization.
Claim 44
Dependent Claim
139 words
A microwave transmitter/receiver apparatus comprising: a housing, said housing having a central partition plate; a primary radiator; a transmit/receiver first multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and a receive input; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; support means for rotatably supporting the housing and the apparatus exclusive of the support means to enable them to turn about a wave radiation axis of the housing for controlling the plane of a wave polarization.
Claim 45
Dependent Claim
139 words
A microwave transmitter/receiver apparatus comprising: a housing, said housing having a central partition plate; a primary radiator; a transmit/receiver first multiplexer for multiplexing a transmit signal and a receive signal, said multiplexer having a transmit input and a receive input; a transmit filter and a receive filter connected respectively to said transmit input and said receive input of said transmit/receive multiplexer; transmit means connected to said transmit filter for outputting the transmit signal responsive to receiving a predetermined transmit intermediate frequency (IF) signal; receive means connected to the receive filter for outputting a predetermined receive IF signal responsive to receiving the receive signal; support means for rotatably supporting the housing and the apparatus exclusive of the support means to enable them to turn about a wave radiation axis of the housing for controlling the plane of a wave polarization.
References Cited (Backward Citations)
US2803817A
Cited
US2956277A
Cited
US3827051A
Cited
US4147980A
Cited
US4260967A
Cited
US4538175A
Cited
US4397035A
Cited
EP0073511A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-12 | 1993-08-14 | 1994-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-12 | 1997-08-14 | 1998-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-12 | 2001-08-14 | 2002-02-13 | $7700.00 | Window Closed / Lapsed |