JPS6150354U - - Google Patents
Info
- Publication number
- JPS6150354U JPS6150354U JP1984133856U JP13385684U JPS6150354U JP S6150354 U JPS6150354 U JP S6150354U JP 1984133856 U JP1984133856 U JP 1984133856U JP 13385684 U JP13385684 U JP 13385684U JP S6150354 U JPS6150354 U JP S6150354U
- Authority
- JP
- Japan
- Prior art keywords
- level
- amplifier
- output signal
- detection
- generating
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 7
- 230000010355 oscillation Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
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
- H03G3/3052—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
Landscapes
- Superheterodyne Receivers (AREA)
- Noise Elimination (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Description
第1図はスーパーヘテロダイン受信機の従来例
を示すブロツク図、第2図は第1図の受信機中の
レベル検出回路の出力特性を示す図、第3図は本
考案の実施例を示すブロツク図、第4図は第3図
の受信機中の加算回路の出力特性を示す図、第5
図は第3図の受信機の主要部分の具合的構成を示
す回路図である。 主要部分の符号の説明、1…非同調型RFアン
プ、2…ミキサ、4,7…BPF、10,11…
レベル検出回路、12…加算回路。
を示すブロツク図、第2図は第1図の受信機中の
レベル検出回路の出力特性を示す図、第3図は本
考案の実施例を示すブロツク図、第4図は第3図
の受信機中の加算回路の出力特性を示す図、第5
図は第3図の受信機の主要部分の具合的構成を示
す回路図である。 主要部分の符号の説明、1…非同調型RFアン
プ、2…ミキサ、4,7…BPF、10,11…
レベル検出回路、12…加算回路。
Claims (1)
- 入力段に設けられた非同調型RF(高調波)ア
ンプと、該RFアンプの出力信号を可変発振手段
の発振周波数に応じて周波数変換して所定の中間
周波数のみのRF信号を得る混合手段と、前記R
Fアンプの出力信号レベルに応じた第1検出信号
を発生する第1レベル検出手段と、前記混合手段
の出力信号レベルに応じた第2検出信号を発生す
る第2レベル検出手段と、前記第1及び第2検出
信号レベルを加算して該加算レベルに応じて前記
RFアンプの利得を変化させる加算手段とを含む
ことを特徴とするスーパーヘテロダイン受信機。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1984133856U JPS6150354U (ja) | 1984-09-03 | 1984-09-03 | |
FR8513078A FR2569920B1 (fr) | 1984-09-03 | 1985-09-03 | Superheterodyne pourvu d'un dispositif antibrouillage |
DE19853531465 DE3531465A1 (de) | 1984-09-03 | 1985-09-03 | Superheterodyn-empfaenger |
US07/085,268 US4776040A (en) | 1984-09-03 | 1987-08-12 | Superheterodyne receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1984133856U JPS6150354U (ja) | 1984-09-03 | 1984-09-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6150354U true JPS6150354U (ja) | 1986-04-04 |
Family
ID=15114633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1984133856U Pending JPS6150354U (ja) | 1984-09-03 | 1984-09-03 |
Country Status (4)
Country | Link |
---|---|
US (1) | US4776040A (ja) |
JP (1) | JPS6150354U (ja) |
DE (1) | DE3531465A1 (ja) |
FR (1) | FR2569920B1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0461505A (ja) * | 1990-06-29 | 1992-02-27 | Sanyo Electric Co Ltd | Agc回路 |
WO2004021564A1 (ja) * | 2002-08-30 | 2004-03-11 | Kabushiki Kaisha Toyota Jidoshokki | 受信機及びその自動利得制御方法 |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62128231A (ja) * | 1985-11-28 | 1987-06-10 | Toshiba Corp | チユ−ナ回路 |
IT1214239B (it) * | 1987-04-13 | 1990-01-10 | Sgs Microelettronica Spa | Controllo dinamico di uno stadio mescolatore |
JPH01129620A (ja) * | 1987-11-16 | 1989-05-22 | Sanyo Electric Co Ltd | ラジオ受信機 |
FR2627336B1 (fr) * | 1988-02-17 | 1990-06-08 | Thomson Csf | Filtre auto-adaptatif commutable pour poste emetteur et/ou recepteur radio |
JP2546331B2 (ja) * | 1988-04-26 | 1996-10-23 | ソニー株式会社 | Fm・am受信機 |
DE69023200T2 (de) * | 1989-04-21 | 1996-06-20 | Philips Electronics Nv | Abstimmbarer resonanzverstärker. |
WO1990014718A1 (en) * | 1989-05-18 | 1990-11-29 | Motorola, Inc. | Method and apparatus for reducing intermodulation distortion |
JPH0338906A (ja) * | 1989-07-05 | 1991-02-20 | Pioneer Electron Corp | 受信装置 |
US5239701A (en) * | 1989-11-15 | 1993-08-24 | Sanyo Electric Co., Ltd. | Radio receiver with improved channel selection and reception |
DE3942959C2 (de) * | 1989-12-23 | 1995-06-29 | Telefunken Microelectron | Funkempfänger |
DE4011650A1 (de) * | 1990-04-11 | 1991-10-17 | Licentia Gmbh | Regelschaltung fuer einen ueberlagerungsempfaenger |
US5264795A (en) * | 1990-06-18 | 1993-11-23 | The Charles Machine Works, Inc. | System transmitting and receiving digital and analog information for use in locating concealed conductors |
EP0464669B1 (en) * | 1990-06-29 | 1997-06-04 | Sanyo Electric Co., Ltd. | AGC circuit for radio receiver |
US5339454A (en) * | 1991-08-05 | 1994-08-16 | Ford Motor Company | Automatic gain control for RF amplifier |
JPH05308323A (ja) * | 1992-04-30 | 1993-11-19 | Matsushita Electric Ind Co Ltd | 無線電話装置 |
DE4306578C2 (de) * | 1993-03-03 | 1995-08-24 | Loewe Opta Gmbh | Verfahren und Schaltungsanordnung zum Empfang von HF-Signalen unter Verwendung eines Doppelüberlagerungsempfängers |
JP2857320B2 (ja) * | 1994-06-01 | 1999-02-17 | 三菱電機株式会社 | 受信信号レベル検出方式 |
JPH09121124A (ja) * | 1995-10-25 | 1997-05-06 | Fujitsu Ltd | ダブルバランス型ミキサ回路 |
JP3185741B2 (ja) * | 1998-02-24 | 2001-07-11 | 日本電気株式会社 | 無線選択呼出受信機 |
WO2000028664A2 (en) | 1998-11-12 | 2000-05-18 | Broadcom Corporation | Fully integrated tuner architecture |
US6628932B1 (en) * | 2000-09-29 | 2003-09-30 | Northrop Grumman Corporation | Radio receiver automatic gain control techniques |
US7088975B1 (en) * | 2002-01-04 | 2006-08-08 | Broadcom Corporation | Automatic gain control system and method using multiple local AGC loops |
US6975845B2 (en) * | 2002-01-22 | 2005-12-13 | Nokia Corporation | Direct conversion receiver architecture |
JP2003218711A (ja) * | 2002-01-22 | 2003-07-31 | Alps Electric Co Ltd | Fm受信機のagc回路 |
JP3770231B2 (ja) * | 2002-04-16 | 2006-04-26 | 松下電器産業株式会社 | 高周波信号受信装置 |
EP1361655A1 (en) * | 2002-05-07 | 2003-11-12 | Semiconductor Ideas to The Market (ItoM) BV | Mirror suppression circuit in a quadrature demodulator |
US7212798B1 (en) * | 2003-07-17 | 2007-05-01 | Cisco Technology, Inc. | Adaptive AGC in a wireless network receiver |
DE102004037916A1 (de) * | 2004-08-05 | 2006-03-16 | Robert Bosch Gmbh | Empfangsschaltung zum Empfangen von OFDM-Signalen und Verfahren hierzu |
US7587224B2 (en) * | 2005-12-21 | 2009-09-08 | Broadcom Corporation | Reconfigurable topology for receiver front ends |
US7539476B2 (en) * | 2006-03-13 | 2009-05-26 | Kleer Semiconductor Corporation | RF-to-baseband receiver architecture |
US7746053B2 (en) * | 2008-08-26 | 2010-06-29 | Micrel, Inc. | Tester for RF devices |
WO2010028296A1 (en) | 2008-09-04 | 2010-03-11 | Allflex Usa, Inc. | Combination full-duplex and half-duplex electronic identification tag |
EP2296285A1 (en) * | 2009-09-14 | 2011-03-16 | Alcatel Lucent | Device for processing band-restricted radio frequency signals, system and method thereof |
NZ599877A (en) * | 2009-10-09 | 2014-03-28 | Allflex Usa Inc | Hdx demodulator |
US8493185B2 (en) * | 2009-10-09 | 2013-07-23 | Aleis Pty Ltd | Radio frequency identification reader antenna having a dynamically adjustable Q-factor |
ES2776023T3 (es) * | 2009-11-04 | 2020-07-28 | Allflex Usa Inc | Antena de múltiples bucles de transmisión/recepción de cancelación de señal para un lector de identificación de radiofrecuencia |
US9577686B2 (en) | 2015-04-23 | 2017-02-21 | Visteon Global Technologies, Inc. | Providing for radio frequency auto gain control (RF AGC) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58171132A (ja) * | 1982-03-22 | 1983-10-07 | テレフンケン・エレクトロニク・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | 受信機入力回路 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE691564C (de) * | 1935-09-10 | 1940-05-30 | Telefunken Gmbh | Empfaenger mit Dynamikregelung im Hochfrequenzteil |
FR2263635A1 (en) * | 1974-03-05 | 1975-10-03 | Oak Holland Bv | High stability frequency converter - uses three mixing circuits and a quartz controlled pilot oscillator |
US3895299A (en) * | 1974-04-08 | 1975-07-15 | Sanders Associates Inc | Apparatus for automatic adjustment of AGC reference voltage |
JPS56149807A (en) * | 1980-04-23 | 1981-11-19 | Fujitsu Ltd | Agc circuit |
JPS57107645A (en) * | 1980-12-25 | 1982-07-05 | Toshiba Corp | Tuner |
JPS57188118A (en) * | 1981-05-15 | 1982-11-19 | Toshiba Corp | Television receiver |
JPS5820040A (ja) * | 1981-07-28 | 1983-02-05 | Hitachi Ltd | チユ−ナ |
US4455681A (en) * | 1981-12-21 | 1984-06-19 | Wile Donald T | Dual threshold wide band/narrow band AGC |
JPS58201415A (ja) * | 1982-05-20 | 1983-11-24 | Akai Electric Co Ltd | 受信機のagc回路 |
US4520507A (en) * | 1983-10-24 | 1985-05-28 | Zenith Electronics Corporation | Low noise CATV converter |
FR2558658B1 (fr) * | 1984-01-25 | 1989-09-22 | Portenseigne | Demodulateur a boucle a verrouillage de phase |
-
1984
- 1984-09-03 JP JP1984133856U patent/JPS6150354U/ja active Pending
-
1985
- 1985-09-03 FR FR8513078A patent/FR2569920B1/fr not_active Expired
- 1985-09-03 DE DE19853531465 patent/DE3531465A1/de not_active Withdrawn
-
1987
- 1987-08-12 US US07/085,268 patent/US4776040A/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58171132A (ja) * | 1982-03-22 | 1983-10-07 | テレフンケン・エレクトロニク・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | 受信機入力回路 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0461505A (ja) * | 1990-06-29 | 1992-02-27 | Sanyo Electric Co Ltd | Agc回路 |
WO2004021564A1 (ja) * | 2002-08-30 | 2004-03-11 | Kabushiki Kaisha Toyota Jidoshokki | 受信機及びその自動利得制御方法 |
Also Published As
Publication number | Publication date |
---|---|
US4776040A (en) | 1988-10-04 |
FR2569920B1 (fr) | 1988-12-30 |
FR2569920A1 (fr) | 1986-03-07 |
DE3531465A1 (de) | 1986-03-13 |