AU2001254968A1 - Radio frequency feedback amplifier circuits - Google Patents

Radio frequency feedback amplifier circuits

Info

Publication number
AU2001254968A1
AU2001254968A1 AU2001254968A AU5496801A AU2001254968A1 AU 2001254968 A1 AU2001254968 A1 AU 2001254968A1 AU 2001254968 A AU2001254968 A AU 2001254968A AU 5496801 A AU5496801 A AU 5496801A AU 2001254968 A1 AU2001254968 A1 AU 2001254968A1
Authority
AU
Australia
Prior art keywords
circuit
resonator
frequency
radio frequency
amplifier
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.)
Abandoned
Application number
AU2001254968A
Inventor
Stephen Anthony Gerard Chandler
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.)
Individual
Original Assignee
Individual
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
Priority claimed from GB0011664A external-priority patent/GB0011664D0/en
Priority claimed from GB0017927A external-priority patent/GB0017927D0/en
Priority claimed from GB0020858A external-priority patent/GB0020858D0/en
Priority claimed from GB0028315A external-priority patent/GB0028315D0/en
Priority claimed from GB0103691A external-priority patent/GB0103691D0/en
Application filed by Individual filed Critical Individual
Publication of AU2001254968A1 publication Critical patent/AU2001254968A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • H03F1/083—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements in transistor amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
    • H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
    • H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/20—Continuous tuning of single resonant circuit by varying inductance only or capacitance only

Abstract

A radio frequency feedback amplifier circuit of high linearity within the range of frequencies with which the circuit is to be used includes a high gain amplifier incorporating a bandpass filter in the form of a single resonator which may be tunable, connected in the forward path of the amplifier stage and tuned so that its resonant frequency is at substantially the signal frequency, and a linear passive feedback circuit. A tuning arrangement (64, 65, 66, 67) includes phase detection elements (66), such as a Gilbert cell, for determining the phase shift across the resonator (62) and for adjusting a variable capacitance (64, 65) within the resonator (62) to tune the resonant circuit, in dependence on the frequency of the input to the circuit. Such an amplifier circuit may be used to achieve high linearity and stability at reasonable manufacturing cost, with much greater simplicity than can be achieved using other feedback techniques.
AU2001254968A 2000-05-16 2001-05-14 Radio frequency feedback amplifier circuits Abandoned AU2001254968A1 (en)

Applications Claiming Priority (11)

Application Number Priority Date Filing Date Title
GB0011664A GB0011664D0 (en) 2000-05-16 2000-05-16 Radio frequency feedback amplifier circuits
GB0011664 2000-05-16
GB0017927 2000-07-22
GB0017927A GB0017927D0 (en) 2000-07-22 2000-07-22 Radio frequency feedback amplifier circuits
GB0020858A GB0020858D0 (en) 2000-08-25 2000-08-25 Radio frequency feedback amplifier circuits
GB0020858 2000-08-25
GB0028315 2000-11-21
GB0028315A GB0028315D0 (en) 2000-11-21 2000-11-21 Radio frequency feedback amplifier circuits
GB0103691 2001-02-15
GB0103691A GB0103691D0 (en) 2000-05-16 2001-02-15 Radio frequency feedback amplifier circuits
PCT/GB2001/002081 WO2001089081A2 (en) 2000-05-16 2001-05-14 Radio frequency feedback amplifier circuits

Publications (1)

Publication Number Publication Date
AU2001254968A1 true AU2001254968A1 (en) 2001-11-26

Family

ID=27515948

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001254968A Abandoned AU2001254968A1 (en) 2000-05-16 2001-05-14 Radio frequency feedback amplifier circuits

Country Status (6)

Country Link
US (1) US6859097B2 (en)
EP (1) EP1312159B8 (en)
AT (1) ATE313873T1 (en)
AU (1) AU2001254968A1 (en)
DE (1) DE60116111T2 (en)
WO (1) WO2001089081A2 (en)

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US7132885B2 (en) * 2005-03-23 2006-11-07 Aspendos Communications Low phase shift implementation of the baseband circuitry of a Cartesian feedback loop
DE202007008217U1 (en) 2006-06-29 2007-09-13 Netstal-Maschinen Ag Auxiliary device with gripper with a variety of nipples
ES2439218T3 (en) * 2007-05-04 2014-01-22 Astrium Limited Multi-port amplifiers in communications satellites
US7911277B2 (en) * 2007-10-16 2011-03-22 Black Sand Technologies, Inc. Adaptively tuned RF power amplifier
US7917117B2 (en) * 2008-01-28 2011-03-29 University Of Washington Auto-tuning amplifier
WO2009095717A1 (en) * 2008-01-30 2009-08-06 Chandler Stephen Anthony Gerar Sampling comparators
GB2463880A (en) 2008-09-25 2010-03-31 Ubidyne Inc An EER amplifier with linearising RF feedback
US9136914B2 (en) * 2009-01-22 2015-09-15 Qualcomm Incorporated Impedance change detection in wireless power transmission
US9041467B2 (en) * 2010-01-04 2015-05-26 Marvell World Trade Ltd. Power amplifier with feedback impedance for stable output
US8508294B2 (en) * 2010-01-04 2013-08-13 Marvell World Trade Ltd. Power amplifier with feedback impedance for stable output
GB2478585A (en) * 2010-03-11 2011-09-14 Stephen Anthony Gerard Chandler An RF amplifier linearised by RF feedback, and having a loop filter resonator of enhanced Q
GB2494652A (en) * 2011-09-14 2013-03-20 Stephen Anthony Gerard Chandler A transmitter amplifier with linearising RF feedback and automatic control of resonator Q, resonator frequency, loop phase, and loop gain
US8941441B2 (en) * 2013-03-15 2015-01-27 Innophase Inc. LNA with linearized gain over extended dynamic range
US9264282B2 (en) 2013-03-15 2016-02-16 Innophase, Inc. Polar receiver signal processing apparatus and methods
US8981852B2 (en) * 2012-11-12 2015-03-17 Avago Technologies General Ip (Singapore) Pte. Ltd. Providing an integrated directional coupler in a power amplifier
US20140141738A1 (en) * 2012-11-19 2014-05-22 Rf Micro Devices, Inc. Self-tuning amplification device
US9083588B1 (en) 2013-03-15 2015-07-14 Innophase, Inc. Polar receiver with adjustable delay and signal processing metho
RU2564699C2 (en) * 2013-12-30 2015-10-10 Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации Method to measure good quality of resonant circuit and device for its realisation
US9497055B2 (en) 2015-02-27 2016-11-15 Innophase Inc. Method and apparatus for polar receiver with digital demodulation
WO2016168861A2 (en) * 2015-04-17 2016-10-20 Bird Technologies Group, Inc. Radio frequency power sensor having a non-directional coupler
US10158509B2 (en) 2015-09-23 2018-12-18 Innophase Inc. Method and apparatus for polar receiver with phase-amplitude alignment
SG11201804302XA (en) 2015-11-23 2018-06-28 Anlotek Ltd Variable filter
US9673828B1 (en) 2015-12-02 2017-06-06 Innophase, Inc. Wideband polar receiver architecture and signal processing methods
US9673829B1 (en) 2015-12-02 2017-06-06 Innophase, Inc. Wideband polar receiver architecture and signal processing methods
EP3249821B1 (en) * 2016-05-27 2018-07-18 Damm Cellular Systems A/S Transmitter and method for a multicarrier system
CN106234557A (en) * 2016-10-10 2016-12-21 成都沃特塞恩电子技术有限公司 A kind of radio frequency power source and radio frequency thawing apparatus
US10122397B2 (en) 2017-03-28 2018-11-06 Innophase, Inc. Polar receiver system and method for Bluetooth communications
US10108148B1 (en) 2017-04-14 2018-10-23 Innophase Inc. Time to digital converter with increased range and sensitivity
US10503122B2 (en) 2017-04-14 2019-12-10 Innophase, Inc. Time to digital converter with increased range and sensitivity
JP7265486B2 (en) 2017-05-24 2023-04-26 アンロテック リミテッド Apparatus and method for controlling a resonator
US10622959B2 (en) * 2018-09-07 2020-04-14 Innophase Inc. Multi-stage LNA with reduced mutual coupling
US11095296B2 (en) 2018-09-07 2021-08-17 Innophase, Inc. Phase modulator having fractional sample interval timing skew for frequency control input
US10840921B2 (en) 2018-09-07 2020-11-17 Innophase Inc. Frequency control word linearization for an oscillator
WO2020146408A1 (en) 2019-01-07 2020-07-16 Innophase, Inc. Using a multi-tone signal to tune a multi-stage low-noise amplifier
US10728851B1 (en) 2019-01-07 2020-07-28 Innophase Inc. System and method for low-power wireless beacon monitor
US10609522B1 (en) 2019-03-25 2020-03-31 Eagle Technology, Llc Mitigating echo and spurious audio noises in radio communication systems
US11277110B2 (en) 2019-09-03 2022-03-15 Anlotek Limited Fast frequency switching in a resonant high-Q analog filter
WO2021111416A1 (en) 2019-12-05 2021-06-10 Anlotek Limited Use of stable tunable active feedback analog filters in frequency synthesis
EP3926828A1 (en) 2020-06-15 2021-12-22 Anlotek Limited Tunable bandpass filter with high stability and orthogonal tuning
US11955942B2 (en) 2021-02-27 2024-04-09 Anlotek Limited Active multi-pole filter

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US3806828A (en) * 1973-07-26 1974-04-23 Cetec Inc Combined high-frequency bias generator and amplifier for recording systems
US4409557A (en) 1981-04-23 1983-10-11 Rca Corporation Bandpass filter with an active element
JPS59182609A (en) 1983-03-31 1984-10-17 Toshiba Corp Broad band amplifier
JPS63312705A (en) 1987-06-16 1988-12-21 Nec Corp Microwave band negative feed-back amplifier
US5237288A (en) 1992-06-05 1993-08-17 Sea, Inc. RF power amplifier linearization
JPH06232660A (en) 1993-02-03 1994-08-19 Toshiba Corp High frequency negative feedback amplifier
US5469114A (en) 1994-10-03 1995-11-21 Advanced Milliwave Laboratories, Inc. Loss less RF feedback for power amplifier linearization
US5550520A (en) * 1995-04-11 1996-08-27 Trw Inc. Monolithic HBT active tuneable band-pass filter
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Also Published As

Publication number Publication date
ATE313873T1 (en) 2006-01-15
US20040100330A1 (en) 2004-05-27
DE60116111T2 (en) 2006-11-02
WO2001089081A3 (en) 2002-04-04
DE60116111D1 (en) 2006-01-26
US6859097B2 (en) 2005-02-22
EP1312159B8 (en) 2006-03-15
WO2001089081A2 (en) 2001-11-22
EP1312159B1 (en) 2005-12-21
EP1312159A2 (en) 2003-05-21

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