JP6316869B2 - 無線周波数自動ゲイン制御(rf agc)の提供 - Google Patents
無線周波数自動ゲイン制御(rf agc)の提供 Download PDFInfo
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- JP6316869B2 JP6316869B2 JP2016086911A JP2016086911A JP6316869B2 JP 6316869 B2 JP6316869 B2 JP 6316869B2 JP 2016086911 A JP2016086911 A JP 2016086911A JP 2016086911 A JP2016086911 A JP 2016086911A JP 6316869 B2 JP6316869 B2 JP 6316869B2
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- 238000000034 method Methods 0.000 claims description 45
- 238000012804 iterative process Methods 0.000 claims description 7
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- 238000005259 measurement Methods 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- UTPGRZGMQVAYAA-UHFFFAOYSA-N 4-fluoro-n-methyl-n-[4-[6-(methylamino)pyrimidin-4-yl]-1,3-thiazol-2-yl]benzamide Chemical compound C1=NC(NC)=CC(C=2N=C(SC=2)N(C)C(=O)C=2C=CC(F)=CC=2)=N1 UTPGRZGMQVAYAA-UHFFFAOYSA-N 0.000 claims 3
- 239000000284 extract Substances 0.000 claims 1
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- 230000001629 suppression Effects 0.000 description 8
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- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/345—Interference values
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
- H04B2001/1072—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal by tuning the receiver frequency
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Quality & Reliability (AREA)
- Circuits Of Receivers In General (AREA)
- Control Of Amplification And Gain Control (AREA)
- Noise Elimination (AREA)
Description
詳細な説明は、以下の図面を参照し、同様の数字は同様の事項を指す。
(これらの周波数はFM帯域内にない)
(これらのIM周波数はFM帯域内にある)
(これらIM周波数はFM帯域内にない)
(これらIM周波数はFM帯域内にある)
(これらIM周波数はFM帯域内にない)
Claims (8)
- 特定周波数の無線周波数自動ゲイン制御(RF AGC)を提供する方法であって、
前記特定周波数の雑音測定(N)及び無線周波数レベルを取得することと、
前記特定周波数がその一部である周波数帯を走査し、複数の不要の周波数を保存することと、
前記複数の不要の周波数に基づいて所定のレベルまで周波数相互変調を計算することと、
前記周波数相互変調が前記特定周波数と等しくないことに応答して、前記RF AGCを再調整する反復プロセスを実行することと、を含み、
前記反復プロセスは、雑音レベル性能に基づく前記RF AGCの再調整を含んでいる、方法。 - 前記周波数相互変調(FIMX)の計算は、「p*fu1±q*fu2」という関係によってFIMXを定義することを更に含み、
「p」は内部変調の順序に関係づけられたxまでの第1の数値であり、「q」は内部変調の順序に関係づけられたxまでの第2の数値であり、「x」は作成される順序数に相関がある所定の数値であり、「fu1」及び「fu2」は前記複数の不要の周波数によって定義される、請求項1に記載の方法。 - 前記RF AGCを再調整する前記反復プロセスは、更に、
所望の信号強度(Vd)が所定の閾値(Vg)より上であるかどうかを決定することと、
Vd<Vgに応答して、Fdが計算された任意のFIMXと異なっているかどうかを決定し、前記Fdが異なっていることに応答して、前記RF AGCを所定量だけ減少させることと、を含む、請求項2に記載の方法。 - 前記反復プロセスは、更に、
前記RF AGCを減少した後で、雑音(N1)を測定することと、
N1とNを比較し、前記N1が前記Nより大きいことに応答して、前記RF AGCを所定量だけ増加させることと、を含む、請求項3に記載の方法。 - 前記反復プロセスは、更に、N1がNより小さいことに応答し、NをN1と同等とみなして、前記減少させることを繰り返し再実行することを含む、請求項4に記載の方法。
- 前記RF AGCを、所定の量(N2)だけ増加させた後に雑音レベルを測定することと、
N2とNを比較し、N2が大きいことに応答して、前記RF AGCを所定量だけ増加させることと、を含む、請求項4に記載の前記方法。 - 所定の遅延後に前記方法を再び実行する、請求項1に記載の方法。
- 無線周波数自動ゲイン制御(RF AGC)を提供するシステムであって、
RF AGCの提供のための指令プログラムを保存するコンピュータ可読媒体を備えるデータストアと、
前記指令プログラムを実行するデジタル信号プロセッサ(DSP)と、
所望のRFステーションに関連付けられたバンドを走査するスキャナと、
所定レベルにまで所定量にわたって相互変調された周波数を抽出する周波数相互変調抽出器と、
前記抽出された相互変調された周波数に関連付けられたチャンネルに基づき、RF AGCの提供を減少させる雑音レベル測定器と、
前記DSPからの出力RF AGC制御信号を提供し、前記減少された量に基づきRF AGCを制御するように構成されたRF AGCコントローラと、を含む、システム。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/694,691 | 2015-04-23 | ||
US14/694,691 US9577686B2 (en) | 2015-04-23 | 2015-04-23 | Providing for radio frequency auto gain control (RF AGC) |
Publications (2)
Publication Number | Publication Date |
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JP2016208520A JP2016208520A (ja) | 2016-12-08 |
JP6316869B2 true JP6316869B2 (ja) | 2018-04-25 |
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Application Number | Title | Priority Date | Filing Date |
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JP2016086911A Active JP6316869B2 (ja) | 2015-04-23 | 2016-04-25 | 無線周波数自動ゲイン制御(rf agc)の提供 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9577686B2 (ja) |
JP (1) | JP6316869B2 (ja) |
CN (1) | CN106067831A (ja) |
DE (1) | DE102016107462A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US10084493B1 (en) * | 2017-07-06 | 2018-09-25 | Gogo Llc | Systems and methods for facilitating predictive noise mitigation |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS6150354U (ja) | 1984-09-03 | 1986-04-04 | ||
US5222255A (en) | 1991-08-05 | 1993-06-22 | Ford Motor Company | Intermodulation controller for radio receiver |
US5339454A (en) | 1991-08-05 | 1994-08-16 | Ford Motor Company | Automatic gain control for RF amplifier |
JP3203202B2 (ja) * | 1997-03-31 | 2001-08-27 | 三洋電機株式会社 | ラジオ受信機 |
KR100222404B1 (ko) * | 1997-06-21 | 1999-10-01 | 윤종용 | 혼변조 왜곡 성분을 억압하는 수신장치 및 방법 |
JP2000068870A (ja) * | 1998-08-20 | 2000-03-03 | Matsushita Electric Ind Co Ltd | インターモジュレーションを防止する受信装置及び受信方法 |
US6873832B2 (en) * | 2001-09-28 | 2005-03-29 | Broadcom Corporation | Timing based LNA gain adjustment in an RF receiver to compensate for intermodulation interference |
US7120410B2 (en) * | 2001-09-28 | 2006-10-10 | Broadcom Corporation | LNA gain adjustment in an RF receiver to compensate for intermodulation interference |
US7299021B2 (en) * | 2001-12-28 | 2007-11-20 | Nokia Corporation | Method and apparatus for scaling the dynamic range of a receiver for continuously optimizing performance versus power consumption |
EP1552687B1 (en) * | 2002-10-07 | 2012-02-01 | Koninklijke Philips Electronics N.V. | Automatically setting an operative state of a wideband amplifier |
US7426376B2 (en) * | 2005-06-30 | 2008-09-16 | Silicon Laboratories Inc. | Receiver having digital automatic gain control |
US8463216B2 (en) | 2011-01-20 | 2013-06-11 | Panasonic Automotive Systems Company Of America, Division Of Panasonic Corporation Of North America | Method and apparatus for sensing inter-modulation to improve radio performance in single and dual tuner |
JP2013038675A (ja) * | 2011-08-10 | 2013-02-21 | Renesas Electronics Corp | ラジオ受信機及び放送局サーチ方法 |
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2015
- 2015-04-23 US US14/694,691 patent/US9577686B2/en active Active
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2016
- 2016-04-22 CN CN201610258469.4A patent/CN106067831A/zh active Pending
- 2016-04-22 DE DE102016107462.4A patent/DE102016107462A1/de not_active Withdrawn
- 2016-04-25 JP JP2016086911A patent/JP6316869B2/ja active Active
Also Published As
Publication number | Publication date |
---|---|
US9577686B2 (en) | 2017-02-21 |
US20160315645A1 (en) | 2016-10-27 |
CN106067831A (zh) | 2016-11-02 |
DE102016107462A1 (de) | 2016-10-27 |
JP2016208520A (ja) | 2016-12-08 |
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