DE60037125D1 - Radio frequency amplifier circuit - Google Patents

Radio frequency amplifier circuit

Info

Publication number
DE60037125D1
DE60037125D1 DE60037125T DE60037125T DE60037125D1 DE 60037125 D1 DE60037125 D1 DE 60037125D1 DE 60037125 T DE60037125 T DE 60037125T DE 60037125 T DE60037125 T DE 60037125T DE 60037125 D1 DE60037125 D1 DE 60037125D1
Authority
DE
Germany
Prior art keywords
ripple
hybrid coupler
radio frequency
differential
port
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 - Lifetime
Application number
DE60037125T
Other languages
German (de)
Other versions
DE60037125T2 (en
Inventor
Per-Olof Brandt
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of DE60037125D1 publication Critical patent/DE60037125D1/en
Application granted granted Critical
Publication of DE60037125T2 publication Critical patent/DE60037125T2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Landscapes

  • Amplifiers (AREA)
  • Circuits Of Receivers In General (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Transmitters (AREA)

Abstract

A hybrid coupler (66, 67; 72, 73) has four ports and is capable of coupling radio frequency signals having a certain frequency from at least one port to at least one other port. The hybrid coupler (66, 67; 72, 73) is implemented as a differential coupler arranged to couple differential radio frequency signals. With such a hybrid coupler a power amplifying circuit can be produced which has sufficiently low ripple on the supply voltage to be integrated together with more sensitive radio circuits, and which is also insensitive to load mismatch such that an isolator can be avoided. A differential hybrid coupler allows the output current to be shared between four transistors or amplifiers, thus reducing the amplitude of the ripple. Further, the frequency of the ripple is four times the operating frequency of the circuit, which makes it much easier to filter out the ripple. <IMAGE>
DE60037125T 2000-11-28 2000-11-28 Radio frequency amplifier circuit Expired - Lifetime DE60037125T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00610120A EP1209756B1 (en) 2000-11-28 2000-11-28 A radio frequency amplifying circuit

Publications (2)

Publication Number Publication Date
DE60037125D1 true DE60037125D1 (en) 2007-12-27
DE60037125T2 DE60037125T2 (en) 2008-09-11

Family

ID=8174425

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60037125T Expired - Lifetime DE60037125T2 (en) 2000-11-28 2000-11-28 Radio frequency amplifier circuit

Country Status (4)

Country Link
EP (1) EP1209756B1 (en)
AT (1) ATE378699T1 (en)
DE (1) DE60037125T2 (en)
ES (1) ES2293890T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2896918B1 (en) 2006-02-02 2008-04-11 Centre Nat Rech Scient CIRCULATOR TYPE MONOLITHIC DEVICE
KR101637672B1 (en) * 2014-08-27 2016-07-07 고려대학교 산학협력단 Apparatus for generating high frequency signal
DE102016111887A1 (en) * 2016-06-29 2018-01-04 Infineon Technologies Ag Differential directional coupler, signal conversion system, and method for converting a differential input signal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4419635A (en) * 1981-09-24 1983-12-06 The United States Of America As Represented By The Secretary Of The Navy Slotline reverse-phased hybrid ring coupler
JPH0767057B2 (en) * 1987-04-10 1995-07-19 三菱電機株式会社 Microwave power combining FET amplifier
US6058144A (en) * 1998-04-03 2000-05-02 Nortel Networks Corporation Multi-GB/S data pulse receiver

Also Published As

Publication number Publication date
ATE378699T1 (en) 2007-11-15
ES2293890T3 (en) 2008-04-01
EP1209756A1 (en) 2002-05-29
EP1209756B1 (en) 2007-11-14
DE60037125T2 (en) 2008-09-11

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition