GB1470545A - Duplexer - Google Patents

Duplexer

Info

Publication number
GB1470545A
GB1470545A GB2672474A GB2672474A GB1470545A GB 1470545 A GB1470545 A GB 1470545A GB 2672474 A GB2672474 A GB 2672474A GB 2672474 A GB2672474 A GB 2672474A GB 1470545 A GB1470545 A GB 1470545A
Authority
GB
United Kingdom
Prior art keywords
channels
waveguides
couplers
signals
frequency bands
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
GB2672474A
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.)
Emerson Electric Co
Original Assignee
Emerson Electric Co
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 Emerson Electric Co filed Critical Emerson Electric Co
Publication of GB1470545A publication Critical patent/GB1470545A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
    • H01P1/2131—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies with combining or separating polarisations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
    • 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

Abstract

1470545 Branching filters EMERSON ELECTRIC CO 17 June 1974 [29 June 1973] 26724/74 Heading H1W [Also in Division H4] A duplexer/diplexer comprises at least two TR channels one of which is coupled to a common waveguide by branch guides which act as a high-pass filter for the signals in that channel and a cut-off filter for the signals in the other channel. In one four-channel arrangement, two groups of two channels utilize first and second frequency bands, the two channels within each group being mutually orthogonally polarized. Thus, the signals in the two channels sharing the higher of the two frequency bands are fed respectively by waveguides 90, 95, Fig. 6, to respective balanced couplers feeding orthogonal signals to common waveguide 20. One of these couplers comprises T-junction 97a, 92a, 92b connected by tapers 120 to 0-db couplers 14, 15 and the other (not completely shown) comprises a similar T-junction connected to 0-db couplers 25, 27. Each coupler comprises a series of branch waveguides 110 extending between series of transverse slots 112, 114 respectively in the feed waveguides and the common waveguides. The branch waveguides 110 are dimensioned beyond cut-off for signals in the pair of channels utilizing the lower frequency band. The latter are fed by respective waveguides 115, 116 to an orthomode junction 40 at the end of the common waveguide 20. The portion of the common guide 20 associated with couplers 14, 15, 25, 27 is mounted between rotational joints so that the polarizations of the two frequency bands may be adjusted with respect to each other. In a modification, these rotational joints are dispensed with and the adjustment effected according to the scheme shown in Fig. 2. These, pairs of channels in respective frequency bands are fed to orthomode joints 65, 71 for transmission through rotationally-adjustable 180 degree plates 61, 60 which, in known fashion, may be used for adjustment of the polarization angle between the two frequency channels.
GB2672474A 1973-06-29 1974-06-17 Duplexer Expired GB1470545A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00374981A US3838362A (en) 1973-06-29 1973-06-29 Diplexing coupler for microwave system

Publications (1)

Publication Number Publication Date
GB1470545A true GB1470545A (en) 1977-04-14

Family

ID=23479012

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2672474A Expired GB1470545A (en) 1973-06-29 1974-06-17 Duplexer

Country Status (7)

Country Link
US (1) US3838362A (en)
JP (1) JPS5034441A (en)
CA (1) CA986595A (en)
DE (1) DE2431289A1 (en)
FR (1) FR2235500B1 (en)
GB (1) GB1470545A (en)
IT (1) IT1016203B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466876A1 (en) * 1979-09-29 1981-04-10 Licentia Gmbh SEPARATOR OF TWO SIGNALS CONSTITUTED EACH BY TWO FREQUENCY BANDS WITH DUAL POLARIZATION RECTILINE

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2443166C3 (en) * 1974-09-10 1985-05-30 ANT Nachrichtentechnik GmbH, 7150 Backnang System switch for separating two signals, each consisting of two double polarized frequency bands
JPS5294201A (en) * 1976-01-31 1977-08-08 Nippon Telegraph & Telephone Method of producing types
DE2703878A1 (en) * 1977-01-31 1978-08-03 Siemens Ag POLARIZATION POINT
IT1149770B (en) * 1982-02-25 1986-12-10 Italtel Spa CIRCUIT TO SEPARATE TWO BANDS OF FREQUENCIES FOR HIGH-FREQUENCY DOUBLE POLARIZATION SIGNALS
BR8305993A (en) * 1983-10-25 1985-06-04 Brasilia Telecom DIRECTIONAL ACIPLATOR USING CORRUGATED GUIDE TO SEPARATE TWO FREQUENCY BANDS MAINTAINING POLARIZATION CHARACTERISTICS
BR8307286A (en) * 1983-12-27 1985-08-06 Brasilia Telecom TRANSITION BETWEEN FLAT AND CORRUGATED GUIDE FOR OPERATION IN TWO DIFFERENT FREQUENCY BANDS
US5003321A (en) * 1985-09-09 1991-03-26 Sts Enterprises, Inc. Dual frequency feed
CA1260609A (en) * 1986-09-12 1989-09-26 Her Majesty The Queen, In Right Of Canada, As Represented By The Minister Of National Defence Wide bandwidth multiband feed system with polarization diversity
US5784033A (en) * 1996-06-07 1998-07-21 Hughes Electronics Corporation Plural frequency antenna feed
JP3688558B2 (en) * 2000-06-05 2005-08-31 三菱電機株式会社 Waveguide group duplexer
KR100891789B1 (en) * 2006-01-04 2009-04-07 삼성전자주식회사 Apparatus and method for duplex in a wireless communication system
FR2929796B1 (en) * 2008-04-02 2014-09-26 Centre Nat Etd Spatiales COUPLER FOR RADIO FREQUENCY MULTIBAND SYSTEM.
US8285387B2 (en) 2008-12-12 2012-10-09 Microchips, Inc. Wireless communication with a medical implant
US20100151113A1 (en) * 2008-12-12 2010-06-17 Microchips, Inc. Manufacture of a radiating structure for a medical implant

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3150333A (en) * 1960-02-01 1964-09-22 Airtron Division Of Litton Pre Coupling orthogonal polarizations in a common square waveguide with modes in individual waveguides
US3265993A (en) * 1964-02-13 1966-08-09 Post Office Integrated coupling unit for two independent waveguide channels
US3668567A (en) * 1970-07-02 1972-06-06 Hughes Aircraft Co Dual mode rotary microwave coupler
US3731235A (en) * 1971-11-03 1973-05-01 Gte Sylvania Inc Dual polarized diplexer
US3731236A (en) * 1972-08-17 1973-05-01 Gte Sylvania Inc Independently adjustable dual polarized diplexer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2466876A1 (en) * 1979-09-29 1981-04-10 Licentia Gmbh SEPARATOR OF TWO SIGNALS CONSTITUTED EACH BY TWO FREQUENCY BANDS WITH DUAL POLARIZATION RECTILINE

Also Published As

Publication number Publication date
IT1016203B (en) 1977-05-30
DE2431289A1 (en) 1975-01-16
US3838362A (en) 1974-09-24
JPS5034441A (en) 1975-04-02
CA986595A (en) 1976-03-30
FR2235500B1 (en) 1980-12-05
FR2235500A1 (en) 1975-01-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee