EP2273605A3 - Compact balun for rejecting common mode electromagnetic fields - Google Patents

Compact balun for rejecting common mode electromagnetic fields Download PDF

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Publication number
EP2273605A3
EP2273605A3 EP20100181791 EP10181791A EP2273605A3 EP 2273605 A3 EP2273605 A3 EP 2273605A3 EP 20100181791 EP20100181791 EP 20100181791 EP 10181791 A EP10181791 A EP 10181791A EP 2273605 A3 EP2273605 A3 EP 2273605A3
Authority
EP
European Patent Office
Prior art keywords
input signal
coaxial
waveguide
common mode
slotline
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.)
Withdrawn
Application number
EP20100181791
Other languages
German (de)
French (fr)
Other versions
EP2273605A2 (en
Inventor
Kenneth A. Essenwanger
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.)
Raytheon Co
Original Assignee
Raytheon 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 Raytheon Co filed Critical Raytheon Co
Publication of EP2273605A2 publication Critical patent/EP2273605A2/en
Publication of EP2273605A3 publication Critical patent/EP2273605A3/en
Withdrawn legal-status Critical Current

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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
    • H01P5/08—Coupling devices of the waveguide type for linking dissimilar lines or devices
    • H01P5/10—Coupling devices of the waveguide type for linking dissimilar lines or devices for coupling balanced lines or devices with unbalanced lines or devices

Landscapes

  • Amplifiers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Semiconductor Integrated Circuits (AREA)
  • Microwave Amplifiers (AREA)

Abstract

A space-efficient broadband balun (20") comprising first mechanism (94, 96) for receiving an input signal (52, 54) having an undesirable component, wherein the undesirable component is a common mode component, said first mechanism (94, 96) comprising first (94) and second (96) coaxial waveguides; second mechanism (50, 78, 98) for rejecting the undesirable component via a waveguide transition (50, 78 98), wherein the waveguide transition (98) includes a dual coax-to-coplanar waveguide-to-single coax transition (98), wherein the coplanar waveguide is formed from a first slotline (114) and a second slotline (116), the first slotline (114) being formed between an outer conductor (122) and a center conductor (118) of an output coaxial cable (120) and between an outer conductor (110) and an inner conductor (112) of the first coaxial waveguide (94), and the second slotline being formed between an outer conductor (122) and a center conductor (118) of the output coaxial cable (120) and between the outer conductor (110) and the inner conductor (112) of the second coaxial waveguide (96), and the waveguide transition (98) includes a resistor network (100) to facilitate load matching; wherein an end of the coaxial output cable (120) provides an output of the balun (20), and the input signal (52, 54) includes a first input signal (52) and a second input signal (54), which are input at ends of the first (94) and second (96) coaxial waveguides the first input signal (52) and the second input signal (54) having a desired differential mode component and an undesired common mode component.
EP20100181791 2004-04-07 2004-04-07 Compact balun for rejecting common mode electromagnetic fields Withdrawn EP2273605A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/US2004/010749 WO2005109566A1 (en) 2004-04-07 2004-04-07 Compact balun for rejecting common mode electromagnetic fields
EP04821964A EP1735870A1 (en) 2004-04-07 2004-04-07 Compact balun for rejecting common mode electromagnetic fields

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP04821964.6 Division 2004-04-07

Publications (2)

Publication Number Publication Date
EP2273605A2 EP2273605A2 (en) 2011-01-12
EP2273605A3 true EP2273605A3 (en) 2011-03-23

Family

ID=34957741

Family Applications (2)

Application Number Title Priority Date Filing Date
EP04821964A Withdrawn EP1735870A1 (en) 2004-04-07 2004-04-07 Compact balun for rejecting common mode electromagnetic fields
EP20100181791 Withdrawn EP2273605A3 (en) 2004-04-07 2004-04-07 Compact balun for rejecting common mode electromagnetic fields

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP04821964A Withdrawn EP1735870A1 (en) 2004-04-07 2004-04-07 Compact balun for rejecting common mode electromagnetic fields

Country Status (4)

Country Link
EP (2) EP1735870A1 (en)
JP (1) JP4445010B2 (en)
NO (1) NO20065111L (en)
WO (1) WO2005109566A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2904481A1 (en) * 2006-07-31 2008-02-01 Thomson Licensing Sas Slot type antenna e.g. vivaldi type antenna, for e.g. set top box, has feeder electromagnetically coupled to slot according to knorr type coupling, and power combination circuit directly coupled to excitation point of antenna
RU2494501C1 (en) * 2012-01-10 2013-09-27 Федеральное государственное унитарное предприятие "Ростовский-на-Дону научно-исследовательский институт радиосвязи" (ФГУП "РНИИРС") Out-of-limit waveguide load

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3784933A (en) * 1971-05-03 1974-01-08 Textron Inc Broadband balun
US3995239A (en) * 1975-09-08 1976-11-30 Rockwell International Corporation Transition apparatus
JPS59119902A (en) * 1982-12-25 1984-07-11 Fujitsu Ltd Electric power distributing and synthesizing circuit
JPS6075101A (en) * 1983-09-30 1985-04-27 Sony Corp Balun for microwave
US5121090A (en) * 1990-04-09 1992-06-09 Tektronix, Inc. Balun providing dual balanced outputs
US5379006A (en) * 1993-06-11 1995-01-03 The United States Of America As Represented By The Secretary Of The Army Wideband (DC to GHz) balun

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4739519A (en) * 1985-10-31 1988-04-19 Narda Western Operations Coplanar microwave balun, multiplexer and mixer assemblies

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3784933A (en) * 1971-05-03 1974-01-08 Textron Inc Broadband balun
US3995239A (en) * 1975-09-08 1976-11-30 Rockwell International Corporation Transition apparatus
JPS59119902A (en) * 1982-12-25 1984-07-11 Fujitsu Ltd Electric power distributing and synthesizing circuit
JPS6075101A (en) * 1983-09-30 1985-04-27 Sony Corp Balun for microwave
US5121090A (en) * 1990-04-09 1992-06-09 Tektronix, Inc. Balun providing dual balanced outputs
US5379006A (en) * 1993-06-11 1995-01-03 The United States Of America As Represented By The Secretary Of The Army Wideband (DC to GHz) balun

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JEONG PHILL KIM ET AL: "NOVEL CONFIGURATIONS OF PLANAR MULTILAYER MAGIC-T USING MICROSTRIP-SLOTLINE TRANSITIONS", IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, IEEE SERVICE CENTER, PISCATAWAY, NJ, US, vol. 50, no. 7, 1 July 2002 (2002-07-01), pages 1683 - 1688, XP001123758, ISSN: 0018-9480, DOI: 10.1109/TMTT.2002.800387 *

Also Published As

Publication number Publication date
EP2273605A2 (en) 2011-01-12
JP2007533201A (en) 2007-11-15
EP1735870A1 (en) 2006-12-27
NO20065111L (en) 2006-11-24
JP4445010B2 (en) 2010-04-07
WO2005109566A1 (en) 2005-11-17

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