DE69427178D1 - Modulatoren - Google Patents

Modulatoren

Info

Publication number
DE69427178D1
DE69427178D1 DE69427178T DE69427178T DE69427178D1 DE 69427178 D1 DE69427178 D1 DE 69427178D1 DE 69427178 T DE69427178 T DE 69427178T DE 69427178 T DE69427178 T DE 69427178T DE 69427178 D1 DE69427178 D1 DE 69427178D1
Authority
DE
Germany
Prior art keywords
modulators
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.)
Expired - Fee Related
Application number
DE69427178T
Other languages
English (en)
Other versions
DE69427178T2 (de
Inventor
Peter Edward Chadwick
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Microchip Technology Caldicot Ltd
Original Assignee
Mitel Semiconductor Ltd
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
Application filed by Mitel Semiconductor Ltd filed Critical Mitel Semiconductor Ltd
Publication of DE69427178D1 publication Critical patent/DE69427178D1/de
Application granted granted Critical
Publication of DE69427178T2 publication Critical patent/DE69427178T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
    • H03C3/095—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation to the loop in front of the voltage controlled oscillator
    • 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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/44—Transmit/receive switching

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Transmitters (AREA)
DE69427178T 1993-09-28 1994-09-01 Modulatoren Expired - Fee Related DE69427178T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9319954A GB2282284B (en) 1993-09-28 1993-09-28 Modulators

Publications (2)

Publication Number Publication Date
DE69427178D1 true DE69427178D1 (de) 2001-06-13
DE69427178T2 DE69427178T2 (de) 2001-11-08

Family

ID=10742621

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69427178T Expired - Fee Related DE69427178T2 (de) 1993-09-28 1994-09-01 Modulatoren

Country Status (7)

Country Link
US (1) US5493257A (de)
EP (1) EP0647015B1 (de)
JP (1) JPH07183923A (de)
CA (1) CA2132789A1 (de)
DE (1) DE69427178T2 (de)
FI (1) FI944473A (de)
GB (1) GB2282284B (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6223061B1 (en) 1997-07-25 2001-04-24 Cleveland Medical Devices Inc. Apparatus for low power radio communications
KR100501182B1 (ko) * 1998-07-07 2005-09-26 삼성전기주식회사 광대역용 2입력 변조회로
US6172579B1 (en) 1999-02-02 2001-01-09 Cleveland Medical Devices Inc. Three point modulated phase locked loop frequency synthesis system and method
TW457762B (en) * 2000-10-02 2001-10-01 Tricome Microwave Electronics High-speed power-saving encoded M-bit FSK modulator
US6512405B1 (en) * 2002-01-14 2003-01-28 Ip-First Llc Oscillator bias variation mechanism
US7567094B2 (en) * 2006-06-14 2009-07-28 Lightwire Inc. Tri-stated driver for bandwidth-limited load
US10230362B2 (en) 2016-12-23 2019-03-12 Microsoft Technology Licensing, Llc Enhanced resonant circuit amplifier

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2914814A1 (de) * 1979-04-11 1980-10-30 Siemens Ag Frequenzmodulator
JPH0616636B2 (ja) * 1984-03-23 1994-03-02 パイオニア株式会社 Ｐｌｌ変調回路
US4633197A (en) * 1985-03-29 1986-12-30 Motorola, Inc. Single resonant tank modulated oscillator
JPS62243406A (ja) * 1986-04-16 1987-10-23 Nec Corp 角度変調器
JPH01238346A (ja) * 1988-03-18 1989-09-22 Japan Radio Co Ltd Ｆｓｋバースト送信スペクトラム補正回路
JPH073704Y2 (ja) * 1990-02-27 1995-01-30 富士通テン株式会社 変調回路
GB2268013B (en) * 1992-06-13 1995-10-25 Motorola Gmbh Binary modulator

Also Published As

Publication number Publication date
GB2282284B (en) 1998-01-21
EP0647015A3 (de) 1995-12-27
GB2282284A (en) 1995-03-29
CA2132789A1 (en) 1995-03-29
EP0647015A2 (de) 1995-04-05
DE69427178T2 (de) 2001-11-08
FI944473A0 (fi) 1994-09-27
FI944473A (fi) 1995-03-29
GB9319954D0 (en) 1993-11-17
JPH07183923A (ja) 1995-07-21
US5493257A (en) 1996-02-20
EP0647015B1 (de) 2001-05-09

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee