GB1507147A - Multiplexing arrangements - Google Patents

Multiplexing arrangements

Info

Publication number
GB1507147A
GB1507147A GB4181774A GB4181774A GB1507147A GB 1507147 A GB1507147 A GB 1507147A GB 4181774 A GB4181774 A GB 4181774A GB 4181774 A GB4181774 A GB 4181774A GB 1507147 A GB1507147 A GB 1507147A
Authority
GB
United Kingdom
Prior art keywords
waveguide
waveguides
circuit
short
mode
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
GB4181774A
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co Ltd
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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB4181774A priority Critical patent/GB1507147A/en
Priority to DE19742459045 priority patent/DE2459045C3/en
Publication of GB1507147A publication Critical patent/GB1507147A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus
    • 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
    • H01P1/161—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion sustaining two independent orthogonal modes, e.g. orthomode transducer
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Waveguide Switches, Polarizers, And Phase Shifters (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

1507147 Waveguide multiplexing junctions MARCONI CO Ltd 28 July 1975 [26 Sept 1974] 41817/74 Heading H1W A multiplexing circuit, e.g. for television channels in a satellite, comprises a circular waveguide 14 short-circuited at one end 9 and coupled to orthogonal pairs of rectangular waveguides 10, 12; 11, 13, &c. each arranged at such axial distance from the short-circuit 9 that the latter appears to be an open circuit at the frequency of the respective carrier signal. In the twochannel system shown, a carrier C1 is coupled through waveguide 10 to the waveguide 14 and excites it in the TE11 mode. Waveguide 10 is spaced from short-circuit 9 by one quarterwavelength at the appropriate frequency. A further carrier C2 is coupled through waveguide 11 to the waveguide and also excites it in the TE11 mode. Waveguide 11 is spaced from the short-circuit 9 by three quarter-wavelengths at the appropriate frequency. Both carriers propagate towards the output 14. Waveguides 12, 13 are arranged in the same transverse planes as waveguides 10, 11 respectively and are connected to stand-by transmitters for respective channels C1 and C2. They excite the waveguide 14 in a TE11 mode orthogonal to the mode excited by waveguides 10, 11. Waveguides 11 and 13 contain band-stop filters for preventing transmission of the carrier C1. The output 14 is connected to an antenna capable of transmitting both polarizations.
GB4181774A 1974-09-25 1974-09-25 Multiplexing arrangements Expired GB1507147A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4181774A GB1507147A (en) 1974-09-25 1974-09-25 Multiplexing arrangements
DE19742459045 DE2459045C3 (en) 1974-09-25 1974-12-13 Coupling device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4181774A GB1507147A (en) 1974-09-25 1974-09-25 Multiplexing arrangements

Publications (1)

Publication Number Publication Date
GB1507147A true GB1507147A (en) 1978-04-12

Family

ID=10421501

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4181774A Expired GB1507147A (en) 1974-09-25 1974-09-25 Multiplexing arrangements

Country Status (2)

Country Link
DE (1) DE2459045C3 (en)
GB (1) GB1507147A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2256534A (en) * 1991-04-26 1992-12-09 Maspro Denko Kk Coaxial-waveguide converter.
WO2000070705A1 (en) * 1999-05-18 2000-11-23 Marconi Communications Gmbh Polarization separating filter
WO2001082405A1 (en) * 2000-04-20 2001-11-01 The Boeing Company Redundant microwave system with passive switching
FR2812974A1 (en) * 2000-08-10 2002-02-15 Cit Alcatel Satellite communications electromagnetic signal transmission circuit having waveguide with multiple quarter wavelength probes redundant two modules connecting and outputs combiner recombined.

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2529392B1 (en) * 1982-06-25 1985-06-28 Thomson Csf MULTIPLEXING DEVICE FOR GROUPING TWO FREQUENCY BANDS AND MULTIPLEXER COMPRISING SUCH A DEVICE
JPH0779275B2 (en) * 1986-01-31 1995-08-23 日本電気株式会社 Microwave band transceiver
DE4433789A1 (en) * 1994-09-22 1996-03-28 Daimler Benz Ag Polarimetric radar method and polarimetric radar arrangement
US6087908A (en) * 1998-09-11 2000-07-11 Channel Master Llc Planar ortho-mode transducer
US6600387B2 (en) 2001-04-17 2003-07-29 Channel Master Llc Multi-port multi-band transceiver interface assembly
JP2010245905A (en) * 2009-04-07 2010-10-28 Sony Corp Transmission apparatus and communication system

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2256534A (en) * 1991-04-26 1992-12-09 Maspro Denko Kk Coaxial-waveguide converter.
GB2256534B (en) * 1991-04-26 1995-03-22 Maspro Denko Kk Coaxial-waveguide converter
WO2000070705A1 (en) * 1999-05-18 2000-11-23 Marconi Communications Gmbh Polarization separating filter
US6768395B1 (en) 1999-05-18 2004-07-27 Marconi Communications Gmbh Polarization separating filter having a polarization separating plate
WO2001082405A1 (en) * 2000-04-20 2001-11-01 The Boeing Company Redundant microwave system with passive switching
US6483396B1 (en) 2000-04-20 2002-11-19 Hughes Electronics Corp. Microwave system with redundant processing devices and passive switching
FR2812974A1 (en) * 2000-08-10 2002-02-15 Cit Alcatel Satellite communications electromagnetic signal transmission circuit having waveguide with multiple quarter wavelength probes redundant two modules connecting and outputs combiner recombined.
EP1184932A1 (en) 2000-08-10 2002-03-06 Alcatel Device for the transmission of electromagnetic signals through a structure comprising modules for achieving a one out of two redundancy
US6573810B2 (en) 2000-08-10 2003-06-03 Alcatel Device for transmitting electromagnetic signals across a structure including modules organized for two-for-one redundancy

Also Published As

Publication number Publication date
DE2459045C3 (en) 1979-08-02
DE2459045A1 (en) 1976-04-01
DE2459045B2 (en) 1978-11-30

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee