KR830008566A - 반송파 주파수 또는 위상 변조된 am신호 수신용 수신기 - Google Patents
반송파 주파수 또는 위상 변조된 am신호 수신용 수신기 Download PDFInfo
- Publication number
- KR830008566A KR830008566A KR1019810004955A KR810004955A KR830008566A KR 830008566 A KR830008566 A KR 830008566A KR 1019810004955 A KR1019810004955 A KR 1019810004955A KR 810004955 A KR810004955 A KR 810004955A KR 830008566 A KR830008566 A KR 830008566A
- Authority
- KR
- South Korea
- Prior art keywords
- receiver
- signal
- overmodulation
- demodulator
- carrier
- Prior art date
Links
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/44—Arrangements characterised by circuits or components specially adapted for broadcast
- H04H20/46—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95
- H04H20/47—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems
- H04H20/49—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems for AM stereophonic broadcast systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Noise Elimination (AREA)
- Superheterodyne Receivers (AREA)
- Stereo-Broadcasting Methods (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따른 수신기의 회로 계통도.
제2도는 위상 복조기로서 제공된 PLL루우프를 포함하는 일실시예를 도시한 도면.
Claims (8)
- 제각기 주파수 복조기 또는 위상 복조기를 가진 신호채널을 포함하며, 반송파주파수 또는 반송파 위상 변조된 AM신호 수신용 수신기에 있어서, AM신호에 의한 반송파의 과변조에 의해 구동되는 과변조검출기(12,13)에 의하여 조절되는 신호 채널 차단 및 복구용의 전자스위치(11,11')를 특징으로 하는 반송파 주파수 또는 위상 변조된 AM신호 수신용 수신기.
- 제1항에 있어서, 과변조검출기(12,13)의 입력신호가 검출기 이전의 신호통로로 부터 유래되며, 과변조검출기(12,13)가 반송파의 소멸시에 작동되는 형태로 됨을 특징으로 하는 반송파 주파수 또는 위상 변조된 AM 신호 수신용 수신기.
- 제2항에 있어서, 반송파상에서 진폭변조된 신호파의 주기보다는 작으나 반송파의 주기보다는 큰 시정수를 가진 정류회로(13)를 통해 입력신호가 공급되는 임계값 스위치(12)를 과변조 검출기가 포함함을 특징으로 하는 반송파 주파수 또는 위상 변조된 AM신호 수신용 수신기.
- 반송파가 위상변조되는 제1항 또는 제2항에 청구된 회로배열에 있어서, 복조기가 FM복조기(6)와 연이은 적분기(8내지 10)를 포함하며, 스위치(11)가 FM복조기(6)과 적분기(8내지 10)사이에 접속되어짐을 특징으로 하는 반송파 주파수 또는 위상 변조된 AM신호 수신용 수신기.
- 제1 또는 제2항중의 어느 하나에 있어서, 스위치(11,11')가 샘플 및 홀드 회로내에 제공되어짐을 특징으로 하는 반송파 주파수 또는 위상 변조된 AM신호 수신용 수신기.
- 제1항에 있어서, 과변조 검출기의 활성 신호가 지연시간을 갖는 스위치에 인가되어짐을 특징으로 하는 반송파 주파수 또는 위상 변조된 AM신호 수신용 수신기.
- 제1항 또는 제4항 내지 제6항중의 어느 하나에 있어서, 과변조 복조기가 FM복조기의 접속되어짐을 특징으로 하는 반송파 주파수 또는 위상 변조된 AM신호 수신용 수신기.
- 제7항에 있어서 과변조 검출기가 고역통과 필터를 통해 FM복조기의 출력단에 접속 되어짐을 특징으로 하는 반송파 주파수 또는 위상 변조된 AM신호 수신용 수신기.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3047386.0 | 1980-12-16 | ||
DE19803047386 DE3047386A1 (de) | 1980-12-16 | 1980-12-16 | Empfaenger zum empfang von am-signalen, deren traeger frequenz- oder phasenmoduliert ist |
Publications (1)
Publication Number | Publication Date |
---|---|
KR830008566A true KR830008566A (ko) | 1983-12-10 |
Family
ID=6119310
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019810004955A KR830008566A (ko) | 1980-12-16 | 1981-12-16 | 반송파 주파수 또는 위상 변조된 am신호 수신용 수신기 |
Country Status (7)
Country | Link |
---|---|
US (1) | US4405835A (ko) |
JP (1) | JPS57124943A (ko) |
KR (1) | KR830008566A (ko) |
AU (1) | AU543982B2 (ko) |
CA (1) | CA1175489A (ko) |
DE (1) | DE3047386A1 (ko) |
GB (1) | GB2089610B (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100445319B1 (ko) * | 1996-02-14 | 2004-11-12 | 소니 가부시끼 가이샤 | 방송신호수신장치 |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4479233A (en) * | 1982-03-03 | 1984-10-23 | Hazeltine Corporation | Distortion correcting AM stereo receiver with non-flat AGC |
CA1196966A (en) * | 1982-03-23 | 1985-11-19 | Kouzou Kage | Interference wave detection circuit for use in radio receiver |
US4747141A (en) * | 1983-10-24 | 1988-05-24 | Kahn Leonard R | AM stereo signal decoder |
US6047170A (en) * | 1997-07-29 | 2000-04-04 | Honeywell Inc. | Automatic squelch control for narrow band AM radio |
US7515896B1 (en) | 1998-10-21 | 2009-04-07 | Parkervision, Inc. | Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships |
US6061551A (en) * | 1998-10-21 | 2000-05-09 | Parkervision, Inc. | Method and system for down-converting electromagnetic signals |
US6542722B1 (en) * | 1998-10-21 | 2003-04-01 | Parkervision, Inc. | Method and system for frequency up-conversion with variety of transmitter configurations |
US6370371B1 (en) | 1998-10-21 | 2002-04-09 | Parkervision, Inc. | Applications of universal frequency translation |
US7236754B2 (en) | 1999-08-23 | 2007-06-26 | Parkervision, Inc. | Method and system for frequency up-conversion |
US7039372B1 (en) | 1998-10-21 | 2006-05-02 | Parkervision, Inc. | Method and system for frequency up-conversion with modulation embodiments |
US6879817B1 (en) | 1999-04-16 | 2005-04-12 | Parkervision, Inc. | DC offset, re-radiation, and I/Q solutions using universal frequency translation technology |
US6853690B1 (en) | 1999-04-16 | 2005-02-08 | Parkervision, Inc. | Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments |
US7693230B2 (en) | 1999-04-16 | 2010-04-06 | Parkervision, Inc. | Apparatus and method of differential IQ frequency up-conversion |
US7065162B1 (en) | 1999-04-16 | 2006-06-20 | Parkervision, Inc. | Method and system for down-converting an electromagnetic signal, and transforms for same |
US7110444B1 (en) | 1999-08-04 | 2006-09-19 | Parkervision, Inc. | Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations |
US8295406B1 (en) | 1999-08-04 | 2012-10-23 | Parkervision, Inc. | Universal platform module for a plurality of communication protocols |
US7010286B2 (en) | 2000-04-14 | 2006-03-07 | Parkervision, Inc. | Apparatus, system, and method for down-converting and up-converting electromagnetic signals |
US6697576B1 (en) * | 2000-07-20 | 2004-02-24 | Northrop Grumman Corporation | Wideband, high-fidelity analog optical link design |
US7454453B2 (en) | 2000-11-14 | 2008-11-18 | Parkervision, Inc. | Methods, systems, and computer program products for parallel correlation and applications thereof |
US7072427B2 (en) | 2001-11-09 | 2006-07-04 | Parkervision, Inc. | Method and apparatus for reducing DC offsets in a communication system |
US7379883B2 (en) | 2002-07-18 | 2008-05-27 | Parkervision, Inc. | Networking methods and systems |
GB2481237A (en) * | 2010-06-17 | 2011-12-21 | Nokia Corp | Protecting a speaker arrangement against over-modulated broadcasts |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3076057A (en) * | 1959-04-22 | 1963-01-29 | Westinghouse Electric Corp | Broadcast stereo receiver |
US3714583A (en) * | 1970-08-26 | 1973-01-30 | Rca Corp | Muting circuit |
US4107613A (en) * | 1977-02-11 | 1978-08-15 | Perma-Power Inc. | Wireless microphone with FM receiver muting system responsive to excessive undesired AM level or low AGC control level |
US4172966A (en) * | 1978-02-23 | 1979-10-30 | Motorola, Inc. | AM stereophonic receiver |
JPS5624838A (en) * | 1979-08-08 | 1981-03-10 | Pioneer Electronic Corp | Demodulating circuit for am stereo signal |
US4340782A (en) * | 1980-06-13 | 1982-07-20 | Magnavox Consumer Electronics Co. | Circuit for demodulating amplitude and angle modulated broadcast signals |
DE3024085A1 (de) * | 1980-06-27 | 1982-01-21 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Am-fm-rundfunkempfaenger zum empfang von am-stereosignalen |
-
1980
- 1980-12-16 DE DE19803047386 patent/DE3047386A1/de active Granted
-
1981
- 1981-09-14 US US06/301,567 patent/US4405835A/en not_active Expired - Fee Related
- 1981-12-10 CA CA000391918A patent/CA1175489A/en not_active Expired
- 1981-12-11 GB GB8137481A patent/GB2089610B/en not_active Expired
- 1981-12-14 JP JP56200257A patent/JPS57124943A/ja active Pending
- 1981-12-14 AU AU78487/81A patent/AU543982B2/en not_active Ceased
- 1981-12-16 KR KR1019810004955A patent/KR830008566A/ko unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100445319B1 (ko) * | 1996-02-14 | 2004-11-12 | 소니 가부시끼 가이샤 | 방송신호수신장치 |
Also Published As
Publication number | Publication date |
---|---|
US4405835A (en) | 1983-09-20 |
GB2089610B (en) | 1985-05-15 |
DE3047386A1 (de) | 1982-07-15 |
JPS57124943A (en) | 1982-08-04 |
GB2089610A (en) | 1982-06-23 |
AU543982B2 (en) | 1985-05-09 |
AU7848781A (en) | 1982-06-24 |
DE3047386C2 (ko) | 1989-05-11 |
CA1175489A (en) | 1984-10-02 |
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