SG46267A1 - Digitally frequency-locking a radio transceiver to the receiver signal - Google Patents

Digitally frequency-locking a radio transceiver to the receiver signal

Info

Publication number
SG46267A1
SG46267A1 SG1996001759A SG1996001759A SG46267A1 SG 46267 A1 SG46267 A1 SG 46267A1 SG 1996001759 A SG1996001759 A SG 1996001759A SG 1996001759 A SG1996001759 A SG 1996001759A SG 46267 A1 SG46267 A1 SG 46267A1
Authority
SG
Singapore
Prior art keywords
signal
reference oscillator
frequency
radio transceiver
divider
Prior art date
Application number
SG1996001759A
Other languages
English (en)
Inventor
Paul J Moller
David K Ford
Douglas W Main
Original Assignee
Motorola 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
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of SG46267A1 publication Critical patent/SG46267A1/en

Links

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
    • H04B1/38—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
    • H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
    • H04B1/405—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with multiple discrete channels
    • 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)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Superheterodyne Receivers (AREA)
  • Analogue/Digital Conversion (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Radio Relay Systems (AREA)
  • Transmitters (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Circuits Of Receivers In General (AREA)
SG1996001759A 1990-01-22 1991-01-22 Digitally frequency-locking a radio transceiver to the receiver signal SG46267A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US46804090A 1990-01-22 1990-01-22

Publications (1)

Publication Number Publication Date
SG46267A1 true SG46267A1 (en) 1998-02-20

Family

ID=23858200

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1996001759A SG46267A1 (en) 1990-01-22 1991-01-22 Digitally frequency-locking a radio transceiver to the receiver signal

Country Status (7)

Country Link
EP (1) EP0439326B1 (fr)
AT (1) ATE179037T1 (fr)
CA (1) CA2034088C (fr)
DE (1) DE69131110T2 (fr)
FI (1) FI103234B1 (fr)
NO (1) NO178249C (fr)
SG (1) SG46267A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR9305597A (pt) * 1992-08-06 1996-01-02 Motorola Inc Rádio, estágio de frequência intermediária de receptor de radiofrequência, rádio tendo elo de fase síncrona e processo de operaçÃo de rádio
US5542095A (en) * 1993-08-24 1996-07-30 Pacific Communication Sciences Frequency Reference Compensation
JP2929965B2 (ja) * 1995-03-31 1999-08-03 日本電気株式会社 無線通信端局

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4498191A (en) * 1983-06-06 1985-02-05 General Electric Company Digital automatic frequency control with tracking
JPS635669A (ja) * 1986-06-25 1988-01-11 Mitsubishi Electric Corp 選局装置
US4703520A (en) * 1986-10-31 1987-10-27 Motorola, Inc. Radio transceiver having an adaptive reference oscillator

Also Published As

Publication number Publication date
EP0439326B1 (fr) 1999-04-14
EP0439326A2 (fr) 1991-07-31
FI103234B (fi) 1999-05-14
EP0439326A3 (en) 1992-07-22
DE69131110D1 (de) 1999-05-20
FI910267A0 (fi) 1991-01-18
NO910260D0 (no) 1991-01-22
DE69131110T2 (de) 1999-11-11
CA2034088C (fr) 1994-05-17
NO178249B (no) 1995-11-06
FI910267A (fi) 1991-07-23
FI103234B1 (fi) 1999-05-14
ATE179037T1 (de) 1999-04-15
NO910260L (no) 1991-07-23
CA2034088A1 (fr) 1991-07-23
NO178249C (no) 1996-02-14

Similar Documents

Publication Publication Date Title
JP3311794B2 (ja) デジタル無線電話機において異なる周波数の信号を発生する方法
FI91821B (fi) Radiopuhelimen automaattinen taajuudensäätökytkentä
US5390168A (en) Radio frequency transmission circuit
GB2289809B (en) A radio receiver
WO2003001692A3 (fr) Systeme d'oscillateur local a faible fuite
US5603099A (en) Transceiver for preventing the degradation of reception sensitivity and modulation accuracy of a transmitted signal when an external reference signal incorporates noise
US5818302A (en) Automatic frequency control oscillation circuit
EP0439326A3 (en) Digitally frequency-locking a radio transceiver to the received signal
CA2118810A1 (fr) Appareil radio a boucles d'asservissement de phase et de commande automatique de frequence combinees et methode d'utilisation de cet appareil
TH11889EX (th) การล็อกความถี่เชิงดิจิตอลของเครื่องรับส่งวิทยุเข้ากับสัญญาณที่ได้รับ
EP0915570A3 (fr) Boucle à verrouillage de phase à échantillonnage pour système radar à haute résolution
US5900751A (en) Automatic frequency control circuit with simplified circuit constitution
JPS5924191Y2 (ja) シンセサイザ−受信機のａｆｃ回路
JPS5824046B2 (ja) 受信放送局探知装置
GB9116051D0 (en) Am receiver system
JPS6310828A (ja) 受信装置
KR950007491B1 (ko) 셀룰라 무선통신 단말기의 주파수 안정화 시스템
JPS5732139A (en) Receiver
KR19980046100A (ko) 알에프 송신장치용 스프리어스 잡음 감소장치
CA2097042A1 (fr) Recepteurs fm-pm a sensibilite accrue
JPS5648728A (en) Channel selector for radio