HK1045914B - 調頻信號的變頻系統 - Google Patents

調頻信號的變頻系統

Info

Publication number
HK1045914B
HK1045914B HK02105690.0A HK02105690A HK1045914B HK 1045914 B HK1045914 B HK 1045914B HK 02105690 A HK02105690 A HK 02105690A HK 1045914 B HK1045914 B HK 1045914B
Authority
HK
Hong Kong
Prior art keywords
signals
frequency converting
converting system
frequency
converting
Prior art date
Application number
HK02105690.0A
Other languages
English (en)
Other versions
HK1045914A1 (en
Inventor
Kiyoshi Sakurai
Original Assignee
Icom Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP2000232024A external-priority patent/JP4156183B2/ja
Priority claimed from JP2000358845A external-priority patent/JP4245268B2/ja
Application filed by Icom Inc filed Critical Icom Inc
Publication of HK1045914A1 publication Critical patent/HK1045914A1/xx
Publication of HK1045914B publication Critical patent/HK1045914B/zh

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
    • H03D7/166—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature using two or more quadrature frequency translation stages
    • 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
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
    • H03D3/008—Compensating DC offsets
    • 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
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/24—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits
    • H03D3/241—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits the oscillator being part of a phase locked loop
    • H03D3/242—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits the oscillator being part of a phase locked loop combined with means for controlling the frequency of a further oscillator, e.g. for negative frequency feedback or AFC
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/06—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers
    • H03J7/065—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers the counter or frequency divider being used in a phase locked loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Superheterodyne Receivers (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
HK02105690.0A 2000-07-31 2002-08-02 調頻信號的變頻系統 HK1045914B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000232024A JP4156183B2 (ja) 2000-07-31 2000-07-31 角度復調装置、角度復調方法及び記録媒体
JP2000358845A JP4245268B2 (ja) 2000-11-27 2000-11-27 角度復調装置、角度復調方法及び記録媒体

Publications (2)

Publication Number Publication Date
HK1045914A1 HK1045914A1 (en) 2002-12-13
HK1045914B true HK1045914B (zh) 2011-11-25

Family

ID=26597082

Family Applications (1)

Application Number Title Priority Date Filing Date
HK02105690.0A HK1045914B (zh) 2000-07-31 2002-08-02 調頻信號的變頻系統

Country Status (3)

Country Link
US (2) US6947499B2 (zh)
EP (1) EP1178604B1 (zh)
HK (1) HK1045914B (zh)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6888888B1 (en) * 2001-06-26 2005-05-03 Microsoft Corporation Simultaneous tuning of multiple channels using intermediate frequency sub-sampling
EP1405312B1 (en) * 2001-07-02 2008-02-06 Koninklijke Philips Electronics N.V. Waveform equalizer for obtaining a corrected signal and apparatus for reproducing information
DE10211524A1 (de) 2002-03-15 2003-05-22 Infineon Technologies Ag Schaltungsanordnung zur Frequenzumsetzung und Mobilfunkgerät mit der Schaltungsanordnung
GB2427091A (en) * 2005-06-08 2006-12-13 Zarlink Semiconductor Ltd Baseband quadrature frequency down-converter receiver having quadrature up-converter stage
GB2427089B (en) 2005-06-08 2009-11-25 Zarlink Semiconductor Ltd Radio frequency tuner
JP4849329B2 (ja) * 2006-10-06 2012-01-11 ソニー株式会社 受信装置および受信方法、並びに、プログラム
US8948716B2 (en) * 2012-04-23 2015-02-03 Entropic Communications, Inc. Apparatuses and methods for conversion of radio frequency (RF) signals to intermediate frequency (IF) signals
US9906152B2 (en) * 2013-07-22 2018-02-27 Telefonaktiebolaget L M Ericsson (Publ) Frequency converter
WO2016015224A1 (zh) * 2014-07-29 2016-02-04 华为技术有限公司 接收机和信号处理方法
US10523305B2 (en) * 2017-05-11 2019-12-31 Wilson Electronics, Llc Variable channelized bandwidth booster
JP6929203B2 (ja) 2017-11-15 2021-09-01 旭化成エレクトロニクス株式会社 ダイレクトコンバージョン受信機

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE905331C (de) 1951-06-20 1954-03-01 Wolfgang Fernholz Vorrichtung zum Gasbeheizen von Arbeitsgeraeten, insbesondere Loetkolben
DE2905331A1 (de) * 1979-02-13 1980-08-21 Philips Patentverwaltung Schaltungsanordnung fuer einen am-empfaenger, insbesondere rundfunkempfaenger im lang-, mittel- und kurzwellenbereich
US4551856A (en) * 1983-05-16 1985-11-05 Motorola, Inc. Synthesized multiple conversion receiver system with provision for avoiding receiver self-quieting spurious response
US4944025A (en) * 1988-08-09 1990-07-24 At&E Corporation Direct conversion FM receiver with offset
DE69020598T2 (de) * 1989-02-17 1996-04-04 Matsushita Electric Ind Co Ltd Tuner zur Abstimmung auf ausgewählte Stationen.
US5109531A (en) * 1989-02-28 1992-04-28 Motorola, Inc. Sideband receiver with pilot lock
US5311318A (en) * 1992-08-17 1994-05-10 Zenith Electronics Corporation Double conversion digital tuning system using separate digital numbers for controlling the local oscillators
US6023491A (en) * 1994-06-21 2000-02-08 Matsushita Electric Industrail Co., Ltd. Demodulation apparatus performing different frequency control functions using separately provided oscillators
JP3268138B2 (ja) * 1994-09-29 2002-03-25 三菱電機株式会社 通信装置、周波数シンセサイザ及びシンセサイズ方法
JP3276526B2 (ja) * 1995-02-21 2002-04-22 アイコム株式会社 復調回路
US5606731A (en) * 1995-03-07 1997-02-25 Motorola, Inc. Zerox-IF receiver with tracking second local oscillator and demodulator phase locked loop oscillator
US5761615A (en) * 1995-05-31 1998-06-02 Motorola, Inc. Wide band zero if quadrature demodulator using a intermediate frequency and a single local oscillator
US5809090A (en) * 1996-03-04 1998-09-15 Glenayre Electronics, Inc. Digital diversity receiver system
KR100290670B1 (ko) * 1997-05-16 2001-07-12 윤종용 위상동기루프를사용한주파수합성기의락-업고속화회로
US5847612A (en) * 1997-08-01 1998-12-08 Microtune, Inc. Interference-free broadband television tuner
DE19819038C2 (de) * 1998-04-28 2002-01-03 Rohde & Schwarz Frequenzumsetzeranordnung für Hochfrequenzempfänger oder Hochfrequenzgeneratoren

Also Published As

Publication number Publication date
US6947499B2 (en) 2005-09-20
US20050272396A1 (en) 2005-12-08
EP1178604B1 (en) 2011-05-25
US7577215B2 (en) 2009-08-18
EP1178604A1 (en) 2002-02-06
HK1045914A1 (en) 2002-12-13
US20020012407A1 (en) 2002-01-31

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Legal Events

Date Code Title Description
PE Patent expired

Effective date: 20210329