GB926343A - Microwave duplexer - Google Patents
Microwave duplexerInfo
- Publication number
- GB926343A GB926343A GB950461A GB950461A GB926343A GB 926343 A GB926343 A GB 926343A GB 950461 A GB950461 A GB 950461A GB 950461 A GB950461 A GB 950461A GB 926343 A GB926343 A GB 926343A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coupler
- waveguide
- signals
- degrees
- phase
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/02—Details
- H01J17/04—Electrodes; Screens
-
- 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
- G01S7/034—Duplexers
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Plasma Technology (AREA)
Abstract
926,343. Directional couplers. ASSOCIATED ELECTRICAL INDUSTRIES. March 14, 1962 [March 15, 1961], No. 9504/61. Class 40 (8). [Also in Group XL (c)] A microwave duplexer includes a pair of 3 db. directional couplers 1, 2, a receiver R and transmitter T being connected to waveguides 3 and 4. respectively, of coupler 1, and an aerial A and non-reflective load 29 being connected to waveguides 5 and 6, respectively, of coupler 2. A further 3 db. directional coupler 7 has one waveguide 10 connected through an E-plane bend 11 to waveguide 9 of coupler 1, and the other waveguide 16 connected through an E-plane bend 17 to waveguide 15 of coupler 2. Similarly, a 3 db. directional coupler 8 is connected through an E-plane bend 14 to coupler 1 and through an E-plane bend 20 to coupler 2. Waveguides 21 and 22 of coupler 7 are coupled to a mounting 23 containing two gas discharge tubes, one in each waveguide, arranged in front of short-circuit reflectors 24, and a similar mounting 27 of coupler 8 carries two gas discharge tubes arranged in front of short-circuit reflectors 28. For low-power energy received by aerial A the gas tubes do not fire and the difference in the lengths of the two transmission paths through couplers 7 and 8, respectively, is such that signals reflected from reflectors 25 lag in phase by 90 degrees at end 12 of coupler 1, the signals appearing at end 9 of coupler 1 after reflection at 24. Since the coupler produces a further lag of 90 degrees in energy passing from one arm to the other the signals combine in phase at the receiver waveguide 3 and are cancelled in the transmitter waveguide 4. Energy from the transmitter T will cause the gas tubes to fire and in this case signals at 18 have a 90 degrees phase lead on signals at 15 and due to the 90 degrees lag produced by the coupler 2 the signals will combine in phase in the aerial waveguide 5.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB950461A GB926343A (en) | 1961-03-15 | 1961-03-15 | Microwave duplexer |
FR890727A FR1320292A (en) | 1961-03-15 | 1962-03-12 | Improvements to microwave circuits |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB950461A GB926343A (en) | 1961-03-15 | 1961-03-15 | Microwave duplexer |
Publications (1)
Publication Number | Publication Date |
---|---|
GB926343A true GB926343A (en) | 1963-05-15 |
Family
ID=9873240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB950461A Expired GB926343A (en) | 1961-03-15 | 1961-03-15 | Microwave duplexer |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB926343A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2237693A (en) * | 1989-11-02 | 1991-05-08 | British Aerospace | Waveguide coupling networks |
US5105170A (en) * | 1989-07-15 | 1992-04-14 | British Aerospace Public Limited Company | Waveguide coupling networks |
-
1961
- 1961-03-15 GB GB950461A patent/GB926343A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5105170A (en) * | 1989-07-15 | 1992-04-14 | British Aerospace Public Limited Company | Waveguide coupling networks |
GB2237693A (en) * | 1989-11-02 | 1991-05-08 | British Aerospace | Waveguide coupling networks |
GB2237693B (en) * | 1989-11-02 | 1994-03-16 | British Aerospace | Waveguide coupling networks |
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