GB1200870A - Improvements in electrical waveguide arrangements - Google Patents
Improvements in electrical waveguide arrangementsInfo
- Publication number
- GB1200870A GB1200870A GB28698/69A GB2869869A GB1200870A GB 1200870 A GB1200870 A GB 1200870A GB 28698/69 A GB28698/69 A GB 28698/69A GB 2869869 A GB2869869 A GB 2869869A GB 1200870 A GB1200870 A GB 1200870A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arms
- junction
- length
- section
- evanescent
- 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
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
- H01P5/19—Conjugate devices, i.e. devices having at least one port decoupled from one other port of the junction type
- H01P5/20—Magic-T junctions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/18—Phase-shifters
- H01P1/182—Waveguide phase-shifters
Abstract
1,200,870. Waveguide junctions and bends. STANDARD TELEPHONE & CABLES Ltd. 6 June, 1969, No. 28698/69. Heading H1W. The arms of a hybrid T-junction, a simple T-junction or a waveguide bend are realized as resonant sections operating in evanescent modes i.e. at frequencies for which the waveguides are normally dimensioned beyond out-off. The invention is based upon the fact that a length of evanescent mode waveguide presents an inductive reactance to an incident wave and that propagation of energy through the length may be realized by providing a capacitative reactance which is the conjugate of the inductive reactance. The resulting sections may be of either T or TT form depending upon whether a single capacitance midway along the section, or a pair capacitances at the ends of the section, are used. In the hybrid junction of Fig. 1, symmetrical arms 1 of length l 1 , nominally dimensioned beyond cut-off, are caused to propagate energy by suitably adjusting capacitative screws 4, 5 arranged midway along the arms. Shunt arm 2 forms part of a series resonant T-section of length l 2 which extends from the centre line of the arms 1 to the end of the arm 2, capacitance being provided by a central screw 6. Series arm 3 comprises a TT-section parallel-resonant section of length l 3 having terminal capacitances consisting respectively of a conductive screw 10 and a dielectric screw 8 extending into a dielectric window 7. It is shown in the specification that the necessary matching conditions and quadrature phase conditions between arms 2, 3 may be realized by properly adjusting the parameters of this embodiment. The loaded Q's of the resonant sections are made equal and input/output connected to the symmetrical arms. The junction behaves as an all-pass phase-equalizing network. A number of such junctions may be coupled in tandem. In a modification, one of the symmetrical arms 1, Fig. 20, is provided at a central point with a capacitive screw 5 and forms a series-resonant circuit. The other symmetrical arm 1 contains a dielectric plate 40 at one end and a screw 4 at the other; it forms a parallel-resonant circuit. The arms reflect energy from an input 2 or 3 in phase quadrature towards an output 3 or 2 and may be used to effect phase equalization of e.g. a filter. Matching of the shunt and series arms is effected by screws 6, 8, 10 and dielectric plate 7. The invention may also be applied to E-plane and H-plane T-junctions which are formed respectively by short-circuiting the shunt and the series arms of a hybrid junction e.g. as shown in Fig. 1 or Fig. 20. The evanescent-mode E-plane T-junction shown in Fig. 22 is provided with capacitive reactances in the form of dielectric plates 7, 40A, 40B. The junction comprises three TT-section evanescent-mode resonators each of half-length l/2. E-plane and H-plane evanescent-mode waveguide bends may be formed by short-circuiting one of the symmetrical arms of a T-junction. The Specification gives several examples (apart from Fig. 22) of bends and T-junctions using both screws and plates as capacitive elements.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB28698/69A GB1200870A (en) | 1969-06-06 | 1969-06-06 | Improvements in electrical waveguide arrangements |
US40074A US3657668A (en) | 1969-06-06 | 1970-05-25 | Hybrid t-junction constructed in waveguide having a cut-off frequency above the operating frequency |
DE19702027602 DE2027602A1 (en) | 1969-06-06 | 1970-06-04 | Waveguide hybrid circuit |
BE751513D BE751513A (en) | 1969-06-06 | 1970-06-05 | IMPROVEMENTS IN ELECTRICAL WAVE GUIDE ASSEMBLIES |
FR7020712A FR2045890B1 (en) | 1969-06-06 | 1970-06-05 | |
CH842670A CH518014A (en) | 1969-06-06 | 1970-06-05 | Waveguide arrangement |
JP45048100A JPS5114234B1 (en) | 1969-06-06 | 1970-06-05 | |
BR219531/70A BR7019531D0 (en) | 1969-06-06 | 1970-06-05 | HYBRID FUNCTION "T" OF WAVE GUIDES |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB28698/69A GB1200870A (en) | 1969-06-06 | 1969-06-06 | Improvements in electrical waveguide arrangements |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1200870A true GB1200870A (en) | 1970-08-05 |
Family
ID=10279677
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB28698/69A Expired GB1200870A (en) | 1969-06-06 | 1969-06-06 | Improvements in electrical waveguide arrangements |
Country Status (8)
Country | Link |
---|---|
US (1) | US3657668A (en) |
JP (1) | JPS5114234B1 (en) |
BE (1) | BE751513A (en) |
BR (1) | BR7019531D0 (en) |
CH (1) | CH518014A (en) |
DE (1) | DE2027602A1 (en) |
FR (1) | FR2045890B1 (en) |
GB (1) | GB1200870A (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5527973A (en) * | 1978-08-21 | 1980-02-28 | Fujitsu Ltd | Vehicle mount radar |
US5019831A (en) * | 1985-05-20 | 1991-05-28 | Texas Instruments Incorporated | Dual end resonant slot array antenna feed having a septum |
EP0209220B1 (en) * | 1985-05-20 | 1993-09-15 | Texas Instruments Incorporated | Dual end resonant slot array antenna feed |
US5611239A (en) * | 1994-09-21 | 1997-03-18 | Magnetrol International Inc. | Microwave point instrument with self-test circuit |
US5926077A (en) * | 1997-06-30 | 1999-07-20 | Raytheon Company | Compact, ultrawideband matched E-plane power divider |
CN101694894A (en) * | 2009-10-16 | 2010-04-14 | 成都赛纳赛德科技有限公司 | Waveguide communicating vessel |
US9373880B2 (en) * | 2014-06-24 | 2016-06-21 | The Boeing Company | Enhanced hybrid-tee coupler |
CN104091998A (en) * | 2014-07-24 | 2014-10-08 | 成都赛纳赛德科技有限公司 | Three-way branch |
CN104091994A (en) * | 2014-07-24 | 2014-10-08 | 成都赛纳赛德科技有限公司 | T-shaped HE face stub |
CN104091996A (en) * | 2014-07-24 | 2014-10-08 | 成都赛纳赛德科技有限公司 | T-shaped H-face stub |
CN104091997A (en) * | 2014-07-24 | 2014-10-08 | 成都赛纳赛德科技有限公司 | T-shaped E-face stub |
CN104091995A (en) * | 2014-07-24 | 2014-10-08 | 成都赛纳赛德科技有限公司 | T-shaped EH face stub |
US11682819B2 (en) * | 2020-10-30 | 2023-06-20 | The University Of Chicago | Millimeter-wave resonator and associated methods |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2685065A (en) * | 1949-02-17 | 1954-07-27 | Gen Precision Lab Inc | Microwave power divider |
US2649576A (en) * | 1949-10-07 | 1953-08-18 | Bell Telephone Labor Inc | Pseudohybrid microwave device |
US3058072A (en) * | 1956-11-15 | 1962-10-09 | Raytheon Co | Microwave filters |
-
1969
- 1969-06-06 GB GB28698/69A patent/GB1200870A/en not_active Expired
-
1970
- 1970-05-25 US US40074A patent/US3657668A/en not_active Expired - Lifetime
- 1970-06-04 DE DE19702027602 patent/DE2027602A1/en active Pending
- 1970-06-05 JP JP45048100A patent/JPS5114234B1/ja active Pending
- 1970-06-05 BR BR219531/70A patent/BR7019531D0/en unknown
- 1970-06-05 FR FR7020712A patent/FR2045890B1/fr not_active Expired
- 1970-06-05 CH CH842670A patent/CH518014A/en not_active IP Right Cessation
- 1970-06-05 BE BE751513D patent/BE751513A/en unknown
Also Published As
Publication number | Publication date |
---|---|
BR7019531D0 (en) | 1973-02-15 |
US3657668A (en) | 1972-04-18 |
FR2045890B1 (en) | 1975-01-10 |
FR2045890A1 (en) | 1971-03-05 |
BE751513A (en) | 1970-12-07 |
JPS5114234B1 (en) | 1976-05-07 |
DE2027602A1 (en) | 1970-12-10 |
CH518014A (en) | 1972-01-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
435 | Patent endorsed 'licences of right' on the date specified (sect. 35/1949) | ||
PCNP | Patent ceased through non-payment of renewal fee |