EP0361801A2
Expired / Lapsed
EP
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A microwave semiconductor switch
Assignee: Mitsubishi Electric Corp
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Filing: 1989-09-22
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Granted: —
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Expires: 2009-09-22
Abstract
Abstract A microwave transmit-receive switch for switching transmission and receiving of microwave signal, includes a directional coupler (6), a common terminal of switching signal connected with an input terminal (60) of the directional coupler, a transmission terminal (3) of switching signal connected with the isolation terminal (62) of the directional coupler, two switching elements (1a; 1b) provided between coupling terminals of the directional coupler and ground, respectively, a quarter wavelength phase delay element (22) provided at one of two transmission lines (71, 72) divided from the coupling terminals of the directional coupler, which one has no phase delay, and the two transmission lines are connected with each other to produce a receiving terminal (2) of the switching signal.
Inventors
- 👤 Yoshinobu C/O Mitsubishi Denki K.K. Kadowaki
- 👤 Yutaka C/O Mitsubishi Denki K.K. Yoshii
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 18:19
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/40; H04B1/44
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
126 words
A microwave transmit-receive switch for switching transmission and receiving of microwave signal, comprising: a directional coupler (6); a common terminal (4) of switching signal connected with an input terminal (60) of said directional coupler (6); a transmission terminal (3) of switching signal connected with said isolation terminal (62) of said directional coupler (6); two switching elements (1a, 1b) provided between coupling terminals (61a, 61b) of said directional coupler (6) and ground, respectively; a quarter wavelength phase delay element (22) provided at one of two lines (71, 72) divided from said coupling terminals (61a, 61b) of said directional coupler (6), which one has no phase delay; and said two lines (71, 72) being connected with each other to produce a receiving terminal (2) of said switching signal.
Claim 2
Dependent Claim
126 words
A microwave transmit-receive switch for switching transmission and receiving of microwave signal, comprising: a directional coupler (6); a common terminal (4) of switching signal connected with an input terminal (60) of said directional coupler (6); a transmission terminal (3) of switching signal connected with said isolation terminal (62) of said directional coupler (6); two switching elements (1a, 1b) provided between coupling terminals (61a, 61b) of said directional coupler (6) and ground, respectively; a quarter wavelength phase delay element (22) provided at one of two lines (71, 72) divided from said coupling terminals (61a, 61b) of said directional coupler (6), which one has no phase delay; and said two lines (71, 72) being connected with each other to produce a receiving terminal (2) of said switching signal.
Claim 3
Dependent Claim
20 words
A microwave transmit-receive switch as defined in claim 1, wherein said directional coupler (6) is a 3 dB directional coupler.
Claim 4
Dependent Claim
17 words
A microwave transmit-receive switch as defined in claim 1, wherein said switching elements (1a, 1b) are transistors.
Claim 5
Dependent Claim
17 words
A microwave transmit-receive switch as defined in claim 1, wherein said switching elements (1a, 1b) are diodes.
Claim 6
Dependent Claim
18 words
A microwave transmit-receive switch as defined in claim 1, which is constituted in a microwave monolithic integrated circuit.
Claim 7
Dependent Claim
109 words
A microwave transmit-receive switch for switching transmission and receiving of microwave signal, comprising: a first and a second directional coupler (6a, 6b); a common terminal (4) of switching signal connected with an input terminal (60a) of said first directional coupler (6a); a receiving terminal (2) of switching signal connected with an isolation terminal (62a) of said first directional coupler (6a); switching elements (1a, 1b) provided between the coupling terminals (61a, 61c) of said first directional coupler (6a) and those (61b, 61d) of said second directional coupler (6b), respectively; and a transmission terminal (3) of said switching signal connected with the input terminal (60b) of said second directional coupler (6b).
Claim 8
Dependent Claim
109 words
A microwave transmit-receive switch for switching transmission and receiving of microwave signal, comprising: a first and a second directional coupler (6a, 6b); a common terminal (4) of switching signal connected with an input terminal (60a) of said first directional coupler (6a); a receiving terminal (2) of switching signal connected with an isolation terminal (62a) of said first directional coupler (6a); switching elements (1a, 1b) provided between the coupling terminals (61a, 61c) of said first directional coupler (6a) and those (61b, 61d) of said second directional coupler (6b), respectively; and a transmission terminal (3) of said switching signal connected with the input terminal (60b) of said second directional coupler (6b).
Claim 9
Dependent Claim
23 words
A microwave transmit-receive switch as defined in claim 6, wherein said first and second directional coupler (6a, 6b) are 3 dB directional couplers.
Claim 10
Dependent Claim
17 words
A microwave transmit-receive switch as defined in claim 6, wherein said switching elements (1a, 1b) are transistors.
Claim 11
Dependent Claim
17 words
A microwave transmit-receive switch as defined in claim 6, wherein said switching elemants (1a, 1b) are diodes.
Claim 12
Dependent Claim
18 words
A microwave transmit-receive switch as defined in claim 6, which is constituted in a microwave monolithic integrated circuit.
Claim 13
Dependent Claim
36 words
A microwave monolithic transmit-receive switch having a switching element arranged in circuit such that the breakdown voltage of the element need not be rated in dependence upon the transmit voltage to be handled by the switch.
Claim 14
Dependent Claim
36 words
A microwave monolithic transmit-receive switch having a switching element arranged in circuit such that the breakdown voltage of the element need not be rated in dependence upon the transmit voltage to be handled by the switch.
References Cited (Backward Citations)
No citation records indexed.
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