GB918419A - Improvements in or relating to transmission line coupling arrangements - Google Patents

Improvements in or relating to transmission line coupling arrangements

Info

Publication number
GB918419A
GB918419A GB17012/58A GB1701258A GB918419A GB 918419 A GB918419 A GB 918419A GB 17012/58 A GB17012/58 A GB 17012/58A GB 1701258 A GB1701258 A GB 1701258A GB 918419 A GB918419 A GB 918419A
Authority
GB
United Kingdom
Prior art keywords
coupling
arrangement
sections
coupling sections
guides
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
Application number
GB17012/58A
Inventor
Kenneth Guy Patterson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB17012/58A priority Critical patent/GB918419A/en
Priority to US815833A priority patent/US3044026A/en
Priority to FR795952A priority patent/FR1226053A/en
Publication of GB918419A publication Critical patent/GB918419A/en
Expired legal-status Critical Current

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
    • H01P5/18—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
    • H01P5/181—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers the guides being hollow waveguides
    • H01P5/182—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers the guides being hollow waveguides the waveguides being arranged in parallel

Landscapes

  • Waveguides (AREA)

Abstract

918,419. Impedance networks. GENERAL ELECTRIC CO. Ltd. May 26, 1959 [May 28, 1958], No. 17012/58. Class 40 (8). A transmission line coupling arrangement has n coupling sections between the two transmission lines, wherein the characteristic impedance of each coupling section, if the coupling sections are in series connection with the two transmission lines, or the characteristic admittance thereof, if in shunt connection, is approximately proportional to sin (2r-1) #/2n, where r is the number of the coupling section counted from one end of the arrangement, allowance being made for junction discontinuities. Each coupling section has uniform characteristic impedance along its length and the electrical distance along each of the two transmission lines between the effective junction with each coupling section and the effective junction with each adjacent coupling section and the electrical lengths of the coupling sections are all approximately the same-a quarter wavelenth at the operating frequency. The arrangement is applicable to hollow waveguides or coaxial lines. In the arrangement shown, the dimensions b 1 b 2 , b 3 , b 4 , b 5 of the coupling sections 5, 6, 7, 8, 9 in series connection between the waveguides 1 and 2 are proportional to # sin (2r - 1) -. The division of power between 10 the waveguides 1 and 2 can be altered by multiplying the dimensions b 1 to b 5 by a common factor. A particular example is described for use in the frequency range from 1800 to 2200 megacycles per sec. and in which the voltage standing wave ratio in each of the guides 1 and 2 due to the coupling arrangement under matched termination conditions does not exceed 1.05. In the arrangement shown in Fig. 1 all the coupling sections 5 to 9 have the same physical length L, but the end sections may be slightly longer so as to give them the desired electrical length when allowance is made for discontinuity effects. In the arrangement shown in Fig. 1 the coupling sections 5-9 open into the broad walls of the guides 1 and 2 and are in series therewith. Alternatively the coupling sections can open into the narrow walls of the guides and be in shunt therewith, the mathematical relation then referring to characteristic admittances of the coupling sections. Comparison with a " binomial " arrangement is discussed.
GB17012/58A 1958-05-28 1958-05-28 Improvements in or relating to transmission line coupling arrangements Expired GB918419A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB17012/58A GB918419A (en) 1958-05-28 1958-05-28 Improvements in or relating to transmission line coupling arrangements
US815833A US3044026A (en) 1958-05-28 1959-05-26 Transmission line coupling arrangements
FR795952A FR1226053A (en) 1958-05-28 1959-05-28 Improvements to coupling devices for transmission lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17012/58A GB918419A (en) 1958-05-28 1958-05-28 Improvements in or relating to transmission line coupling arrangements

Publications (1)

Publication Number Publication Date
GB918419A true GB918419A (en) 1963-02-13

Family

ID=10087635

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17012/58A Expired GB918419A (en) 1958-05-28 1958-05-28 Improvements in or relating to transmission line coupling arrangements

Country Status (3)

Country Link
US (1) US3044026A (en)
FR (1) FR1226053A (en)
GB (1) GB918419A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4635006A (en) * 1984-12-18 1987-01-06 Rca Corporation Adjustable waveguide branch directional coupler
US4679011A (en) * 1986-03-21 1987-07-07 Rca Corporation Waveguide directional coupler family with a common housing having different sets of conductive block insertable therein
US4818964A (en) * 1986-04-28 1989-04-04 Hughes Aircraft Company Switchable multi-power-level short slot waveguide hybrid coupler
US4792770A (en) * 1987-06-29 1988-12-20 General Electric Company Waveguide directional coupler with multiple coupled outputs
US5274839A (en) * 1992-02-12 1993-12-28 General Electric Co. Satellite communications system with the zero-db coupler
DE19716290A1 (en) * 1997-04-18 1998-10-29 Bosch Gmbh Robert Directional coupler
SE517504C2 (en) * 2000-10-27 2002-06-11 Saabtech Electronics Ab directional Couplers
DE10202664A1 (en) * 2002-01-23 2003-07-31 Marconi Comm Gmbh Hollow conductor directional coupler has 2 adjacent coupling openings between hollow sections at distance apart related to wavelength in working wavelength range of directional coupler
US8324983B2 (en) 2010-10-11 2012-12-04 Andrew Llc Selectable coupling level waveguide coupler

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2820203A (en) * 1954-03-18 1958-01-14 Sperry Rand Corp Directional couplers
BE554200A (en) * 1956-04-28

Also Published As

Publication number Publication date
US3044026A (en) 1962-07-10
FR1226053A (en) 1960-07-08

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