GB1365027A - Multiple source phased array radars - Google Patents
Multiple source phased array radarsInfo
- Publication number
- GB1365027A GB1365027A GB5144872A GB5144872A GB1365027A GB 1365027 A GB1365027 A GB 1365027A GB 5144872 A GB5144872 A GB 5144872A GB 5144872 A GB5144872 A GB 5144872A GB 1365027 A GB1365027 A GB 1365027A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oscillator
- frequency
- phase
- coupled
- circulator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/28—Details of pulse systems
- G01S7/285—Receivers
- G01S7/288—Coherent receivers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
1365027 Pulse radar; aerials INTERNATIONAL STANDARD ELECTRIC CORP 8 Nov 1972 [23 Nov 1971] 51448/72 Headings H4D and H4A A pulse multiple-source aerial array radar comprises a plurality N of radiating elements 10 each of which is associated with a transmit/ receive module 1 which includes an injection phase locked microwave diode transmitter 11 (such as a Gunn oscillator), a reception channel, transmit/receive switching means for the element 10, and a variable phase-shifter 17. A common generator device supplies a composite signal through the phase-shifter, and the arrangement is such that, during pulse transmission periods a locking signal is supplied to the transmitter, whereas during reception periods a reference signal is supplied to the reception channel. As described, when using heterodyne reception, the composite signal is made up of CW portions of frequency FO during transmission periods and of CW portions of frequency F1 during reception periods (Fig. 3, not shown). In the generator device a stabilized local oscillator 28 (of frequency F1) controls a reference oscillator 29 (of frequency F0) through a frequency control loop 30 and also supplies a power divider D via a switch 27 during reception periods. The control loop 30 may comprise a mixer receiving signals from the oscillators 28, 29, and a frequency discriminator, or it may utilize a phase loop in which a phase discriminator is fed by such a mixer and by a high stability oscillator, and provides an error signal to the oscillator 29 (Fig. 2, not shown). Said oscillator 29 is coupled through a circulator 26 to a pulsed oscillator 24 which is thereby locked in phase when rendered operative by a modulator 25, receiving synchronizing pulses Sy. Power from the oscillator 24 is coupled via the circulator 26 and the switch 27 to the divider D during transmission periods. The variable phase shifter 17 of each module is connected to a respective output terminal of the divider D and is controlled by a common means 23, whereby scanning is effected. During transmission periods locking signal output from the phase shifter 17 is coupled through a switch 15, and a circulator 13 to the transmitter 11, which is thereby locked in phase. The synchronizing pulses Sy are fed to a control circuit 16 for the switch 15, and to a pulse modulator 12 for the transmitter 11. Output from said transmitter is coupled through the circulator 13 and another circulator 14 to the radiating element 10. During reception periods output from the said radiating element is coupled through the circulator 14 and a limiter 18 to one input of a hybrid junction 19. Reference signal output from the phase shifter 17 is coupled through the switch 15 to the other input of said hybrid junction, and the outputs thereof are coupled through respective diodes 20, 21 to the input terminals of an intermediate frequency (F1-F0) amplifier 22. In another embodiment, homodyne reception is used (Fig. 4, not shown). The composite signal is of one frequency (F0), but the locking signal portions are of greater amplitude than the reference signal portions (Fig. 5, not shown). In the generator device a single stable reference CW oscillator is provided which is coupled through a circulator either to a pulsed oscillator, which is thereby phase locked during transmission periods, or directly to the power divider, during reception periods. The outputs from the balanced mixers in the modules are at video frequencies in this embodiment. The variable phase-shifters 17 allow scanning in azimuth to be effected. Each element 10 is in the form of a vertical array of radiators along a dispersive feed line, and by varying the frequency of the signal supplied, i.e., according to the frequency of the reference oscillator, scanning in elevation may be effected.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7141785A FR2160713B1 (en) | 1971-11-23 | 1971-11-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1365027A true GB1365027A (en) | 1974-08-29 |
Family
ID=9086169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5144872A Expired GB1365027A (en) | 1971-11-23 | 1972-11-08 | Multiple source phased array radars |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2160713B1 (en) |
GB (1) | GB1365027A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2186759A (en) * | 1982-08-27 | 1987-08-19 | Thomson Csf | Radar pulse-compression method employing space-coding |
EP2544301A1 (en) * | 2010-03-04 | 2013-01-09 | Mitsubishi Electric Corporation | Array antenna device |
US8564476B2 (en) | 2009-05-08 | 2013-10-22 | Mbda Uk Limited | Radar apparatus with amplifier duplexer |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3454945A (en) * | 1964-09-18 | 1969-07-08 | Texas Instruments Inc | Modular integrated electronics radar |
-
1971
- 1971-11-23 FR FR7141785A patent/FR2160713B1/fr not_active Expired
-
1972
- 1972-11-08 GB GB5144872A patent/GB1365027A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2186759A (en) * | 1982-08-27 | 1987-08-19 | Thomson Csf | Radar pulse-compression method employing space-coding |
US8564476B2 (en) | 2009-05-08 | 2013-10-22 | Mbda Uk Limited | Radar apparatus with amplifier duplexer |
EP2544301A1 (en) * | 2010-03-04 | 2013-01-09 | Mitsubishi Electric Corporation | Array antenna device |
EP2544301A4 (en) * | 2010-03-04 | 2014-05-07 | Mitsubishi Electric Corp | Array antenna device |
US8914068B2 (en) | 2010-03-04 | 2014-12-16 | Mitsubishi Electric Corporation | Array antenna apparatus |
Also Published As
Publication number | Publication date |
---|---|
FR2160713B1 (en) | 1977-03-18 |
FR2160713A1 (en) | 1973-07-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
746 | Register noted 'licences of right' (sect. 46/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |