CN1167549A - 去除数字fm接收机中的低频干扰 - Google Patents
去除数字fm接收机中的低频干扰 Download PDFInfo
- Publication number
- CN1167549A CN1167549A CN95196503A CN95196503A CN1167549A CN 1167549 A CN1167549 A CN 1167549A CN 95196503 A CN95196503 A CN 95196503A CN 95196503 A CN95196503 A CN 95196503A CN 1167549 A CN1167549 A CN 1167549A
- Authority
- CN
- China
- Prior art keywords
- frequency
- phase sample
- filtering
- signal
- low
- 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
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Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
- H03D3/006—Demodulation of angle-, frequency- or phase- modulated oscillations by sampling the oscillations and further processing the samples, e.g. by computing techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/62—Detectors specially adapted therefor
- G01N30/64—Electrical detectors
- G01N30/66—Thermal conductivity detectors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
- H03D3/001—Details of arrangements applicable to more than one type of frequency demodulator
- H03D3/002—Modifications of demodulators to reduce interference by undesired signals
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Power Engineering (AREA)
- Health & Medical Sciences (AREA)
- Electrochemistry (AREA)
- Theoretical Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Noise Elimination (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
Description
Claims (16)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/345,848 | 1994-11-28 | ||
US08/345,848 US5680418A (en) | 1994-11-28 | 1994-11-28 | Removing low frequency interference in a digital FM receiver |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1167549A true CN1167549A (zh) | 1997-12-10 |
CN1068158C CN1068158C (zh) | 2001-07-04 |
Family
ID=23356738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN95196503A Expired - Fee Related CN1068158C (zh) | 1994-11-28 | 1995-11-28 | 去除数字fm接收机中的低频干扰 |
Country Status (5)
Country | Link |
---|---|
US (1) | US5680418A (zh) |
CN (1) | CN1068158C (zh) |
AU (1) | AU690001B2 (zh) |
CA (1) | CA2206044C (zh) |
WO (1) | WO1996017432A1 (zh) |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100193837B1 (ko) * | 1996-08-24 | 1999-06-15 | 윤종용 | 시분할다윈접속 디지탈 이동통신 시스템의 주파수 교정 버스트 검출방법 |
JP3392670B2 (ja) * | 1996-11-28 | 2003-03-31 | 株式会社東芝 | サンプリング装置 |
US6275680B1 (en) * | 1997-07-29 | 2001-08-14 | Philips Semiconductors, Inc. | Hardware PCH checking for personal handyphone system portable station |
US6061551A (en) | 1998-10-21 | 2000-05-09 | Parkervision, Inc. | Method and system for down-converting electromagnetic signals |
US6091940A (en) | 1998-10-21 | 2000-07-18 | Parkervision, Inc. | Method and system for frequency up-conversion |
US6694128B1 (en) | 1998-08-18 | 2004-02-17 | Parkervision, Inc. | Frequency synthesizer using universal frequency translation technology |
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 |
US6813485B2 (en) | 1998-10-21 | 2004-11-02 | Parkervision, Inc. | Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same |
US6560301B1 (en) | 1998-10-21 | 2003-05-06 | Parkervision, Inc. | Integrated frequency translation and selectivity with a variety of filter embodiments |
US7039372B1 (en) | 1998-10-21 | 2006-05-02 | Parkervision, Inc. | Method and system for frequency up-conversion with modulation embodiments |
US7236754B2 (en) | 1999-08-23 | 2007-06-26 | Parkervision, Inc. | Method and system for frequency up-conversion |
US6061555A (en) | 1998-10-21 | 2000-05-09 | Parkervision, Inc. | Method and system for ensuring reception of a communications signal |
US6049706A (en) | 1998-10-21 | 2000-04-11 | Parkervision, Inc. | Integrated frequency translation and selectivity |
US6370371B1 (en) | 1998-10-21 | 2002-04-09 | Parkervision, Inc. | Applications of universal frequency translation |
US6542722B1 (en) | 1998-10-21 | 2003-04-01 | Parkervision, Inc. | Method and system for frequency up-conversion with variety of transmitter configurations |
US6704549B1 (en) | 1999-03-03 | 2004-03-09 | Parkvision, Inc. | Multi-mode, multi-band communication system |
US6704558B1 (en) | 1999-01-22 | 2004-03-09 | Parkervision, Inc. | Image-reject down-converter and embodiments thereof, such as the family radio service |
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 |
US6430401B1 (en) * | 1999-03-29 | 2002-08-06 | Lucent Technologies Inc. | Technique for effectively communicating multiple digital representations of a signal |
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 |
US7065162B1 (en) | 1999-04-16 | 2006-06-20 | Parkervision, Inc. | Method and system for down-converting an electromagnetic signal, and transforms for same |
US7693230B2 (en) | 1999-04-16 | 2010-04-06 | Parkervision, Inc. | Apparatus and method of differential IQ frequency up-conversion |
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 |
US7454453B2 (en) | 2000-11-14 | 2008-11-18 | Parkervision, Inc. | Methods, systems, and computer program products for parallel correlation and applications thereof |
US6990161B2 (en) * | 2001-01-09 | 2006-01-24 | International Business Machines Corporation | Phase selection mechanism for optimal sampling of source synchronous clocking interface data |
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 |
US7460584B2 (en) | 2002-07-18 | 2008-12-02 | Parkervision, Inc. | Networking methods and systems |
US6774822B1 (en) * | 2003-01-09 | 2004-08-10 | Process Control Corporation | Method and systems for filtering unwanted noise in a material metering machine |
US7059202B2 (en) * | 2004-05-12 | 2006-06-13 | S.C. Johnson Home Storage, Inc. | Multi-axis force/torque sensor and data acquisition system |
US7689132B2 (en) * | 2005-06-07 | 2010-03-30 | Industrial Technology Research Institute | Interference-rejection coding method for an optical wireless communication system and the optical wireless communication system thereof |
FI20065438A0 (fi) * | 2006-06-22 | 2006-06-22 | Nokia Corp | Häiriönpoistoyksikkö ja häiriönpoistomenetelmä |
TWI426397B (zh) * | 2009-06-29 | 2014-02-11 | Lee Ming Inst Technology | Can be used in a signal interval in the unequal spacing of the sample, the signal in this interval between a single and multiple numerical integration device. |
US8600332B2 (en) | 2010-03-31 | 2013-12-03 | Apple Inc. | Electronic devices having interferers aligned with receiver filters |
US11387790B2 (en) | 2019-01-24 | 2022-07-12 | Analog Devices International Unlimited Company | Power semiconductor device with charge trapping compensation |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3593150A (en) * | 1969-12-03 | 1971-07-13 | Kakusai Denshin Denwa Kk | Phase- and frequency-fluctuation included in a transmitted signal |
FR2122376B1 (zh) * | 1971-01-21 | 1975-01-17 | Ibm France | |
US4380082A (en) * | 1980-05-21 | 1983-04-12 | Nippon Electric Co., Ltd. | Digital signal receiver with FM interference elimination capability |
US4501004A (en) * | 1982-01-30 | 1985-02-19 | Nippon Electric Co., Ltd. | Device for eliminating FM or like interference from a digital microwave signal |
CA1215430A (en) * | 1982-12-20 | 1986-12-16 | Toshihiko Ryu | Cross-polarization distortion canceller for use in digital radio communication receiver |
US4803701A (en) * | 1987-06-25 | 1989-02-07 | The United States Of America As Represented By The Secretary Of The Air Force | Digital detection circuit |
US4908581A (en) * | 1988-07-21 | 1990-03-13 | Matsushita Electric Industrial Co., Ltd. | Frequency demodulator having circuit cancelling undesired signal components |
US4995104A (en) * | 1989-05-08 | 1991-02-19 | At&T Bell Laboratories | Interference cancelling circuit and method |
US5084669A (en) * | 1990-03-08 | 1992-01-28 | Telefonaktiebolaget L M Ericsson | Direct phase digitization |
JP2579243B2 (ja) * | 1990-11-07 | 1997-02-05 | シャープ株式会社 | 復調装置 |
US5283815A (en) * | 1991-05-21 | 1994-02-01 | General Electric Company | Tangental type differential detector for pulse shaped PI/4 shifted differentially encoded quadrature phase shift keying |
US5339456A (en) * | 1991-12-11 | 1994-08-16 | Xetron Corporation | Method and circuit for non-cooperative interference suppression of radio frequency signals |
EP0574083B1 (en) * | 1992-06-12 | 1997-09-03 | Koninklijke Philips Electronics N.V. | FM quadrature demodulator |
US5475705A (en) * | 1993-04-29 | 1995-12-12 | Ericsson Ge Mobile Communications Inc. | Demodulator for Manchester-coded FM signals |
-
1994
- 1994-11-28 US US08/345,848 patent/US5680418A/en not_active Expired - Lifetime
-
1995
- 1995-11-28 CN CN95196503A patent/CN1068158C/zh not_active Expired - Fee Related
- 1995-11-28 WO PCT/US1995/015578 patent/WO1996017432A1/en active Application Filing
- 1995-11-28 CA CA002206044A patent/CA2206044C/en not_active Expired - Fee Related
- 1995-11-28 AU AU44125/96A patent/AU690001B2/en not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
WO1996017432A1 (en) | 1996-06-06 |
AU690001B2 (en) | 1998-04-09 |
MX9703890A (es) | 1998-07-31 |
CA2206044C (en) | 2005-03-29 |
AU4412596A (en) | 1996-06-19 |
CN1068158C (zh) | 2001-07-04 |
US5680418A (en) | 1997-10-21 |
CA2206044A1 (en) | 1996-06-06 |
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C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: UNWIRED PLANET INC. Free format text: FORMER OWNER: CLUSTER CO., LTD. Effective date: 20130701 Owner name: CLUSTER CO., LTD. Free format text: FORMER OWNER: ERICSSON CO. Effective date: 20130701 |
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C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20130701 Address after: Nevada Patentee after: Wireless Planet LLC Address before: Delaware Patentee before: Clastres LLC Effective date of registration: 20130701 Address after: Delaware Patentee after: Clastres LLC Address before: North Carolina Patentee before: ERICSSON Inc. |
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CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20010704 Termination date: 20141128 |
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