GB201004061D0 - Improved band-pass feedback amplifier circuits - Google Patents
Improved band-pass feedback amplifier circuitsInfo
- Publication number
- GB201004061D0 GB201004061D0 GBGB1004061.6A GB201004061A GB201004061D0 GB 201004061 D0 GB201004061 D0 GB 201004061D0 GB 201004061 A GB201004061 A GB 201004061A GB 201004061 D0 GB201004061 D0 GB 201004061D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- amplifier circuits
- feedback amplifier
- improved band
- pass feedback
- pass
- 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- Withdrawn
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
- H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
- H03F1/345—Negative-feedback-circuit arrangements with or without positive feedback using hybrid or directional couplers
-
- 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
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
- H03F1/3247—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using feedback acting on predistortion circuits
-
- 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
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
- H03F1/3252—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits using multiple parallel paths between input and output
-
- 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
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
- H03F1/3258—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits based on polynomial terms
-
- 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
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
- H03F1/3294—Acting on the real and imaginary components of the input signal
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
- H03H11/12—Frequency selective two-port networks using amplifiers with feedback
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
- H03H11/12—Frequency selective two-port networks using amplifiers with feedback
- H03H11/1291—Current or voltage controlled filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/204—A hybrid coupler being used at the output of an amplifier circuit
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Algebra (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Amplifiers (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1004061A GB2478585A (en) | 2010-03-11 | 2010-03-11 | An RF amplifier linearised by RF feedback, and having a loop filter resonator of enhanced Q |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1004061A GB2478585A (en) | 2010-03-11 | 2010-03-11 | An RF amplifier linearised by RF feedback, and having a loop filter resonator of enhanced Q |
Publications (2)
Publication Number | Publication Date |
---|---|
GB201004061D0 true GB201004061D0 (en) | 2010-04-28 |
GB2478585A GB2478585A (en) | 2011-09-14 |
Family
ID=42261425
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1004061A Withdrawn GB2478585A (en) | 2010-03-11 | 2010-03-11 | An RF amplifier linearised by RF feedback, and having a loop filter resonator of enhanced Q |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2478585A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110380752A (en) * | 2018-04-10 | 2019-10-25 | 恩智浦有限公司 | Wireless device |
CN111034041A (en) * | 2017-05-24 | 2020-04-17 | 安乐泰克有限公司 | Apparatus and method for controlling resonator |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
RU2018122759A (en) | 2015-11-23 | 2019-12-26 | Анлотек Лимитед | TUNABLE FILTER |
TWI721048B (en) * | 2016-11-28 | 2021-03-11 | 英商安諾特克有限公司 | Variable analog filter, multipole filter, and method of filtering an analog electromagnetic signal |
US11277110B2 (en) | 2019-09-03 | 2022-03-15 | Anlotek Limited | Fast frequency switching in a resonant high-Q analog filter |
CN115427911A (en) | 2019-12-05 | 2022-12-02 | 安乐泰克有限公司 | Using stable tunable active feedback analog filter in frequency synthesis |
US11876499B2 (en) | 2020-06-15 | 2024-01-16 | Anlotek Limited | Tunable bandpass filter with high stability and orthogonal tuning |
RU2748610C1 (en) * | 2020-12-08 | 2021-05-28 | федеральное государственное бюджетное образовательное учреждение высшего образования «Донской государственный технический университет» (ДГТУ) | Fourth-order broadband bandpass filter with single input and paraphase output |
US11955942B2 (en) | 2021-02-27 | 2024-04-09 | Anlotek Limited | Active multi-pole filter |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6859097B2 (en) * | 2000-05-16 | 2005-02-22 | Stephen Anthony Gerard Chandler | Radio frequency feedback amplifier circuits |
US7433668B2 (en) * | 2004-12-23 | 2008-10-07 | Lucent Technologies Inc. | Controlling Q-factor of filters |
US7400203B2 (en) * | 2006-08-03 | 2008-07-15 | Broadcom Corporation | Circuit with Q-enhancement cell having feedback loop |
US7884680B2 (en) * | 2008-06-30 | 2011-02-08 | Infineon Technologies Ag | Dynamically adjustable Q-factors |
-
2010
- 2010-03-11 GB GB1004061A patent/GB2478585A/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111034041A (en) * | 2017-05-24 | 2020-04-17 | 安乐泰克有限公司 | Apparatus and method for controlling resonator |
CN111034041B (en) * | 2017-05-24 | 2023-10-31 | 安乐泰克有限公司 | Apparatus and method for controlling resonator |
CN110380752A (en) * | 2018-04-10 | 2019-10-25 | 恩智浦有限公司 | Wireless device |
Also Published As
Publication number | Publication date |
---|---|
GB2478585A (en) | 2011-09-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB2479182B (en) | Power amplifier | |
GB201004061D0 (en) | Improved band-pass feedback amplifier circuits | |
EP2587665A4 (en) | Amplifier apparatus | |
ZA201301325B (en) | Downloadable isim | |
GB2481487B (en) | Amplifier | |
EP2571161A4 (en) | Amplifier | |
ZA201303552B (en) | Signal amplification | |
GB2487998B (en) | Amplifier | |
EP2543141A4 (en) | Operational amplifier having improved slew rate | |
GB2496664B (en) | Amplifier circuit with offset control | |
EP2584698A4 (en) | High-frequency amplifier circuit | |
GB2502122B (en) | Amplifier | |
GB201005404D0 (en) | Efficient amplification stage | |
GB2506498B (en) | Power amplifier circuit | |
GB201314754D0 (en) | Power amplification circuits | |
EP2606940A4 (en) | Play equipment | |
EP2865095A4 (en) | Doherty amplifier | |
GB2490977B (en) | Amplifier | |
HUP1100726A2 (en) | Component | |
GB201313706D0 (en) | Power amplifier circuit | |
EP2495873A4 (en) | Amplification circuit | |
GB201120538D0 (en) | Amplifier | |
GB2483631B (en) | Auto-resonant control circuits | |
EP2559160A4 (en) | Power-amplifier arrangement | |
GB201012712D0 (en) | Play equipment |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |