JPH08511395A - 受信回路用の自動利得制御方法および装置 - Google Patents
受信回路用の自動利得制御方法および装置Info
- Publication number
- JPH08511395A JPH08511395A JP7522180A JP52218095A JPH08511395A JP H08511395 A JPH08511395 A JP H08511395A JP 7522180 A JP7522180 A JP 7522180A JP 52218095 A JP52218095 A JP 52218095A JP H08511395 A JPH08511395 A JP H08511395A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- amplitude
- circuit
- transmitted
- component
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 9
- 230000001360 synchronised effect Effects 0.000 claims abstract description 8
- 230000003321 amplification Effects 0.000 claims abstract description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 6
- 239000013307 optical fiber Substances 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 3
- 230000006870 function Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims 2
- 238000007620 mathematical function Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000011088 calibration curve Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical class OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- 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
- H03G3/3084—Automatic control in amplifiers having semiconductor devices in receivers or transmitters for electromagnetic waves other than radiowaves, e.g. lightwaves
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/005—Control by a pilot signal
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Control Of Amplification And Gain Control (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Optical Communication System (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.伝送される信号の直流成分の振幅と有効信号の振幅に相対的に影響を及ぼす 、伝送路を介して伝送される信号の受信機の自動利得制御方法において、伝送さ れる信号の、受信機によって受信される直流成分によって、その周波数が、受信 機(7)の利得制御増幅回路の通過帯域内にあるが、伝送される有効信号の周波 数域外にあるパイロット信号(6)を振幅変調する段階(5)と、これらの増幅 回路(7)を通過するように、この変調された信号を有効信号に追加する段階と 、増幅回路(7)の利得を制御するために、これらの増幅回路(7)の出力にお いてろ過する(8)ことによって抽出される変調されたパイロット信号を振幅復 調(9、10)する段階とからなる方法。 2.変調されたパイロット信号の振幅復調(9、10)が同期検波であることを 特徴とする、請求の範囲第1項に記載の方法。 3.同期検波(9、10)が、復調信号に、振幅変調(5)に使用されるパイロ ット信号(6)を使用することを特徴とする、請求の範囲第2項に記載の方法。 4.振幅復調回路の出力において検出される電圧が、有効信号と直列成分の間の 伝送の減衰の不一致に応じて訂正されることを特徴とする、請求の範囲第1項か ら第3項のいずれか一項に記載の方法。 5.伝送される信号の直流成分の振幅と有効信号の振幅に相 対的に影響を及ぼす、伝送路を介して伝送される信号の受信機の自動利得制御装 置において、その周波数が、受信機(7)の利得制御増幅回路の通過帯域内にあ るが、伝送される有効信号の周波数域外にあるパイロット信号発生器(6)と、 このパイロット信号を伝送される信号の直流成分に比例する信号によって変調す る振幅変調器(5)と、変調されたパイロット信号を有効信号に加算して、得ら れた信号を増幅回路(7)の入力に伝送する加算器(3)と、増幅回路(7)の 出力に結合された変調されたパイロット信号を選択するフィルタ(8)を含む制 御ループと、増幅回路(7)の利得を制御するようにフィルタに結合された同期 検波回路(9、10)とを含む装置。 6.制御ループが、増幅回路(7)の利得を制御するために、同期検波回路(9 、10)の出力における電圧と基準電圧(11)とを比較する電圧比較器(12 )を含むことを特徴とする、請求の範囲第5項に記載の装置。 7.同期検波回路の出力が、増幅回路(7)の利得を制御するレベル訂正回路に 結合されていることを特徴とする、請求の範囲第5項または第6項に記載の装置 。 8.レベル訂正回路が、有効信号の振幅を直流成分の振幅に結合する関係から計 算される伝達関数を有することを特徴とする、請求の範囲第7項に記載の装置。 9.レベル訂正回路が、その内容が受信される直流成分のレベルから有効信号の 減衰を較正することによって得られるメモリ回路を含むことを特徴とする、請求 の範囲第7項に記載 の装置。 10.伝送路が光ファイバであることを特徴とする、請求の範囲第5項から第9 項のいずれか一項に記載の装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR94/02194 | 1994-02-25 | ||
FR9402194A FR2716766B1 (fr) | 1994-02-25 | 1994-02-25 | Procédé et dispositif de contrôle automatique de gain de circuits de réception. |
PCT/FR1995/000221 WO1995023454A1 (fr) | 1994-02-25 | 1995-02-24 | Procede et dispositif de controle automatique de gain de circuits de reception |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH08511395A true JPH08511395A (ja) | 1996-11-26 |
JP3350931B2 JP3350931B2 (ja) | 2002-11-25 |
Family
ID=9460444
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52218095A Expired - Lifetime JP3350931B2 (ja) | 1994-02-25 | 1995-02-24 | 受信回路用の自動利得制御方法および装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US5617240A (ja) |
EP (1) | EP0696392B1 (ja) |
JP (1) | JP3350931B2 (ja) |
DE (1) | DE69503576T2 (ja) |
FR (1) | FR2716766B1 (ja) |
WO (1) | WO1995023454A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001144564A (ja) * | 1999-11-15 | 2001-05-25 | Dx Antenna Co Ltd | 増幅器 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1276024B1 (it) * | 1995-10-12 | 1997-10-24 | Pirelli Cavi S P A Ora Pirelli | Sistema di polarizzazione di un modulatore ottico per cavi |
JPH10303772A (ja) * | 1997-04-25 | 1998-11-13 | Alps Electric Co Ltd | セルラ−電話機の受信回路 |
US6031648A (en) * | 1997-05-01 | 2000-02-29 | At&T Corp. | Automatic gain control for free-space optical telecommunications links |
US6374095B1 (en) * | 1997-11-07 | 2002-04-16 | Honeywell International Inc. | Method and apparatus for providing a squelch function on narrow band radio receivers |
US5963087A (en) * | 1998-05-29 | 1999-10-05 | Motorola, Inc. | Gain control circuit and method for providing gain control of a variable amplifier using a pilot signal |
US7035346B1 (en) * | 1998-06-19 | 2006-04-25 | Lucent Technologies Inc. | Method and apparatus for desensitization of a wireless receiver |
KR100326318B1 (ko) * | 2000-02-09 | 2002-03-08 | 윤종용 | 파장분할다중화 시스템용 광섬유 증폭기의 일시 과도 현상억제 장치 |
US7149242B1 (en) * | 2000-05-31 | 2006-12-12 | Bitrage, Inc. | Communications system for improving transmission rates and transmission distances of data signals across communications links |
US7248625B2 (en) * | 2002-09-05 | 2007-07-24 | Silicon Storage Technology, Inc. | Compensation of I-Q imbalance in digital transceivers |
KR100467323B1 (ko) * | 2002-09-23 | 2005-01-24 | 한국전자통신연구원 | 광 수신기 출력 신호의 판별 수준 최적화 방법 및 장치 |
CN100481896C (zh) * | 2004-05-20 | 2009-04-22 | 汤姆森特许公司 | 处理导频信号的装置和方法 |
KR101239131B1 (ko) * | 2009-11-05 | 2013-03-08 | 한국전자통신연구원 | 무선주파수인식 리더 및 그것의 이득 제어 방법 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2408943A1 (fr) * | 1977-11-15 | 1979-06-08 | Thomson Csf | Dispositif de controle automatique du gain d'une voie de reception, utilise notamment dans des systemes comportant des liaisons optiques |
JPS57152740A (en) * | 1981-03-17 | 1982-09-21 | Hitachi Cable Ltd | Optical receiving circuit |
GB2113035B (en) * | 1981-12-03 | 1985-10-09 | Standard Telephones Cables Ltd | Optical transmission system and method |
FR2621753B1 (fr) * | 1987-10-13 | 1995-03-10 | Thomson Csf | Dispositif de commande automatique de gain et recepteur comportant un tel dispositif |
US5146079A (en) * | 1990-11-01 | 1992-09-08 | At&T Bell Laboratories | Broadband optical receiver with active bias feedback circuit |
-
1994
- 1994-02-25 FR FR9402194A patent/FR2716766B1/fr not_active Expired - Fee Related
-
1995
- 1995-02-24 WO PCT/FR1995/000221 patent/WO1995023454A1/fr active IP Right Grant
- 1995-02-24 DE DE69503576T patent/DE69503576T2/de not_active Expired - Lifetime
- 1995-02-24 US US08/532,816 patent/US5617240A/en not_active Expired - Lifetime
- 1995-02-24 JP JP52218095A patent/JP3350931B2/ja not_active Expired - Lifetime
- 1995-02-24 EP EP95910596A patent/EP0696392B1/fr not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001144564A (ja) * | 1999-11-15 | 2001-05-25 | Dx Antenna Co Ltd | 増幅器 |
Also Published As
Publication number | Publication date |
---|---|
FR2716766B1 (fr) | 1996-03-22 |
DE69503576T2 (de) | 1998-12-17 |
WO1995023454A1 (fr) | 1995-08-31 |
DE69503576D1 (de) | 1998-08-27 |
JP3350931B2 (ja) | 2002-11-25 |
FR2716766A1 (fr) | 1995-09-01 |
EP0696392B1 (fr) | 1998-07-22 |
US5617240A (en) | 1997-04-01 |
EP0696392A1 (fr) | 1996-02-14 |
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