IN2014CN04414A - - Google Patents

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Publication number
IN2014CN04414A
IN2014CN04414A IN4414CHN2014A IN2014CN04414A IN 2014CN04414 A IN2014CN04414 A IN 2014CN04414A IN 4414CHN2014 A IN4414CHN2014 A IN 4414CHN2014A IN 2014CN04414 A IN2014CN04414 A IN 2014CN04414A
Authority
IN
India
Prior art keywords
signal
notch filter
tunable notch
amplified
power amplifier
Prior art date
Application number
Inventor
Jose Cabanillas
Calogero D Presti
Babak Nejati
Guy Klemens
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of IN2014CN04414A publication Critical patent/IN2014CN04414A/en

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • H03F3/245—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages with semiconductor devices only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/56—Modifications of input or output impedances, not otherwise provided for
    • H03F1/565—Modifications of input or output impedances, not otherwise provided for using inductive elements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/38—Impedance-matching networks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H2007/013—Notch or bandstop filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)
  • Filters And Equalizers (AREA)

Abstract

An impedance matching circuit with at least one tunable notch filter for a power amplifier is disclosed. The power amplifier amplifies an input radio frequency (RF) signal and provides an amplified RF signal. The impedance matching circuit performs output impedance matching for the power amplifier and includes at least one tunable notch filter. Each tunable notch filter has a notch that can be varied in frequency to provide better attenuation of an undesired signal. The at least one tunable notch filter attenuates at least one undesired signal in the amplified RF signal. The at least one tunable notch filter may include (i) a first tunable notch filter to attenuate a first undesired signal at a second harmonic of the amplified RF signal and/or (ii) a second tunable notch filter to attenuate a second undesired signal at a third harmonic of the amplified RF signal.
IN4414CHN2014 2012-01-23 2013-01-23 IN2014CN04414A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/356,508 US8803615B2 (en) 2012-01-23 2012-01-23 Impedance matching circuit with tunable notch filters for power amplifier
PCT/US2013/022802 WO2013112627A1 (en) 2012-01-23 2013-01-23 Impedance matching circuit with tunable notch filters for power amplifier

Publications (1)

Publication Number Publication Date
IN2014CN04414A true IN2014CN04414A (en) 2015-09-04

Family

ID=47666507

Family Applications (1)

Application Number Title Priority Date Filing Date
IN4414CHN2014 IN2014CN04414A (en) 2012-01-23 2013-01-23

Country Status (7)

Country Link
US (1) US8803615B2 (en)
EP (1) EP2807745B1 (en)
JP (1) JP2015508621A (en)
KR (1) KR101555888B1 (en)
CN (1) CN104067514A (en)
IN (1) IN2014CN04414A (en)
WO (1) WO2013112627A1 (en)

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Also Published As

Publication number Publication date
EP2807745B1 (en) 2020-05-27
EP2807745A1 (en) 2014-12-03
US20130187712A1 (en) 2013-07-25
WO2013112627A1 (en) 2013-08-01
JP2015508621A (en) 2015-03-19
US8803615B2 (en) 2014-08-12
KR101555888B1 (en) 2015-09-25
CN104067514A (en) 2014-09-24
KR20140125808A (en) 2014-10-29

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