US3772696A
Expired / Lapsed
US
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Speed gate equipped doppler radar system
Assignee: Telefunken Patentverwertungs GmbH
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Filing: 1962-04-18
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Granted: 1973-11-13
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Expires: 1982-04-18
Abstract
Abstract 2. In a Doppler radar system, the combination which comprises: A. SEARCH ANTENNA MEANS; B. REFERENCE GENERATOR MEANS COUPLED TO SAID SEARCH ANTENNA MEANS; C. SIGNAL PROCESSING MEANS ELECTRICALLY CONNECTED TO SAID SEARCH ANTENNA MEANS AND INCLUDING 1. A Doppler frequency detector, and 2. A SPEED GATE INCORPORATING, I. A TWO-INPUT MIXER ONE OF WHOSE INPUTS IS CONNECTED TO THE OUTPUT OF SAID Doppler frequency detector, II. AT LEAST FIRST AND SECOND BAND PASS FILTERS EACH HAVING A NARROW PASS BAND, THE INPUT OF SAID FIRST FILTER BEING CONNECTED TO THE OUTPUT OF SAID MIXER, AND III. MIXER CONTROL MEANS CONNECTED TO THE OUTPUT OF SAID FIRST FILTER AND TO THE OTHER OF THE INPUTS OF SAID MIXER FOR CAUSING THE LATTER TO DELIVER A SUBSTANTIALLY CONSTANT CARRIER FREQUENCY; D. MODULATING MEANS CONNECTED TO THE OUTPUT OF SAID REFERENCE GENERATOR MEANS AND TO THE OUTPUT OF SAID MIXER, THE OUTPUT OF SAID MODULATING MEANS BEING CONNECTED TO THE INPUT OF SAID SECOND FILTER OF SAID SPEED GATE; AND E. MEANS CONNECTING THE OUTPUT OF SAID SECOND FILTER TO SAID SEARCH ANTENNA MEANS FOR CONTROLLING THE POSITION THEREOF.
Inventors
- 👤 H Kummer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:42
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/52; G01S13/522; G01S13/524; G01S13/5244
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
141 words
In a Doppler radar system, the combination which comprises: a. intelligence responsive means; b. reference generator means coupled to said intelligence responsive means; c. signal processing means electrically connected, to said intelligence responsive means and including 1. a Doppler frequency detector, and 2. a speed gate incorporating i. a mixer receiving the output of said Doppler frequency detector and being controlled to deliver a substantially constant carrier frequency, and ii. a plurality of band pass filters each having a narrow pass band; d. modulating means connected to the output of said reference generator means and to the output of said mixer, the output of said modulating means being connected to at least one of said filters of said speed gate; and e. means connecting the output of at least said last-mentioned filter to said intelligence responsive means for conTrolling the same.
Claim 2
Dependent Claim
141 words
In a Doppler radar system, the combination which comprises: a. intelligence responsive means; b. reference generator means coupled to said intelligence responsive means; c. signal processing means electrically connected, to said intelligence responsive means and including 1. a Doppler frequency detector, and 2. a speed gate incorporating i. a mixer receiving the output of said Doppler frequency detector and being controlled to deliver a substantially constant carrier frequency, and ii. a plurality of band pass filters each having a narrow pass band; d. modulating means connected to the output of said reference generator means and to the output of said mixer, the output of said modulating means being connected to at least one of said filters of said speed gate; and e. means connecting the output of at least said last-mentioned filter to said intelligence responsive means for conTrolling the same.
Claim 3
Dependent Claim
36 words
In a Doppler radar system, the combination which comprises: a. intelligence responsive means; b. reference generator means coupled to said intelligence responsive means; c. signal processing means electrically connected, to said intelligence responsive means and including
Claim 4
Dependent Claim
36 words
In a Doppler radar system, the combination which comprises: a. intelligence responsive means; b. reference generator means coupled to said intelligence responsive means; c. signal processing means electrically connected, to said intelligence responsive means and including
Claim 5
Dependent Claim
5 words
a Doppler frequency detector, and
Claim 6
Dependent Claim
5 words
a Doppler frequency detector, and
Claim 7
Dependent Claim
5 words
a Doppler frequency detector, and
Claim 8
Dependent Claim
5 words
a Doppler frequency detector, and
Claim 9
Dependent Claim
21 words
The combination defined in claim 2 wherein the output of said first filter is connected for controlling said Doppler frequency detector.
Claim 10
Dependent Claim
45 words
The combination defined in claim 2 wherein said connecting means comprise a component to which the outputs of said respective filters are connected, and means connected to said component for deriving therefrom a plurality of outputs for controlling the position of said search antenna means.
Claim 11
Dependent Claim
27 words
The combination defined in claim 2 wherein said second filter connected to said modulating means controls but one variable affecting the position of said search antenna means.
Claim 12
Dependent Claim
22 words
The combination defined in claim 2 wherein said modulating means effect amplitude modulation, and wherein said connecting means comprise phase detecting means.
Claim 13
Dependent Claim
146 words
The combination defined in claim 6 wherein said search antenna means comprise at least one servomotor and wherein said phase detecting means comprise: a. a phase-shifter whose input is connected to the output of said first filter; b. a two-input adder one of whose inputs is connected to the output of said second filter and the other of whose inputs is connected to the output of said phase-shifter; c. a first clipper whose input is connected to the output of said adder; d. a second clipper whose input is connected to the output of said first filter; and e. a two-input mixer one of whose inputs is connected to the output of said first clipper and the other of whose inputs is connected to the output of said second clipper, the output of said last-mentioned mixer being connected to said servomotor of said search antenna means.
Claim 14
Dependent Claim
127 words
The combination defined in claim 2 wherein said modulating means comprise: a. two modulators each connected to the output of said mixer, one of said modulators being further connected to one intelligence signal coming from said reference generator means and the other of said modulators being further connected to another intelligence signal coming from said reference generator means; b. a phase shifter whose input is connected to the output of said one modulator; and c. a two-input adder one of whose inputs is connected to the output of said first phase shifter and whose other input is connected to the output of said other modulator, the output of said adder constituting the output of said modulating means and being connected to the input of said second filter.
Claim 15
Dependent Claim
121 words
The combination defined in claim 8 wherein said search antenna means comprise at least two servomotors and wherein said connecting means comprise: a. a first two-input phase detector one of whose inputs is connected to the output of said second filter; b. a phase-shifter whose input is connected to the output of said second filter; and c. a second two-input Phase detector one of whose inputs is connected to the output of said last-mentioned phase shifter; the remaining inputs of each of said phase detectors being connected to the output of said first filter, and the outputs of said two phase detectors constituting the output of said connecting means and being connected, respectively, to said servomotors of said search antenna means.
Claim 16
Dependent Claim
36 words
In a Doppler radar system, the combination which comprises: a. search antenna means; b. reference generator means coupled to said search antenna means; c. signal processing means electrically connected to said search antenna means and including
Claim 17
Dependent Claim
36 words
In a Doppler radar system, the combination which comprises: a. search antenna means; b. reference generator means coupled to said search antenna means; c. signal processing means electrically connected to said search antenna means and including
Claim 18
Dependent Claim
150 words
The combination defined in claim 10 wherein said connecting means comprise: a. a phase-shifter connected to the output of said first filter; b. a first clipper whose input is connected to the output of said first filter; and c. two phase detectors connected to said second and third filters, respectively, each phase detector comprising a two-input adder, a clipper whose input is connected to the output of the adder, and a two-input mixer one of whose inputs is connected to the output of the clipper, one input of the adder being connected to the output of the respective filter and the other input of the adder being connected to the output of said phase-shifter, the other input of the mixer being connected to the output of said first clipper, and the output if each respective mixer being connected to a respective servomotor controlling the position of said search antenna means.
Claim 19
Dependent Claim
65 words
The combination defined in claim 10 wherein said modulating means comprise a goniometer having a moving coil and two stationary coils which are angularly displaced relative to each other, said moving coil being mechanically connected to said search antenna means and electrically connected to the output of said mixer, and said stationary coils being connected to the inputs of said second and third filters, respectively.
References Cited (Backward Citations)
US2945212A
Cited
US3056128A
Cited
US3086201A
Cited
US3031659A
Cited
US2994865A
Cited
US3090950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |