NO934391L - Radio med rask faselaast sloeyfe - Google Patents

Radio med rask faselaast sloeyfe

Info

Publication number
NO934391L
NO934391L NO934391A NO934391A NO934391L NO 934391 L NO934391 L NO 934391L NO 934391 A NO934391 A NO 934391A NO 934391 A NO934391 A NO 934391A NO 934391 L NO934391 L NO 934391L
Authority
NO
Norway
Prior art keywords
filter
locked loop
phase locked
communication device
sloeyfe
Prior art date
Application number
NO934391A
Other languages
English (en)
Other versions
NO934391D0 (no
Inventor
Jaime Andres Borras
Armando J Gonzalez
Cesar W Carralero
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 NO934391D0 publication Critical patent/NO934391D0/no
Publication of NO934391L publication Critical patent/NO934391L/no

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
    • H03L7/107—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth
    • H03L7/1075—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth by changing characteristics of the loop filter, e.g. changing the gain, changing the bandwidth
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Transceivers (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

Kommunikasjonsanordning (508) for bruk i et tidsdelt multiplekset (TDM) kommunikasjonssystem (500) omfattende en sender, en mottaker og en frekvens-scanner for rask scanning av radiofrekvenskommunikasjonskanaler for å bestemme en tilgjengelig kanal. Kommunikasjonsanordningen (508) omfatter også en faselåst sløyfe (100) for framskaffelse av et referansesignal for kommunikasjonsanordningen. (508) og låsing til tilgjengelig kanal. Denne faselåste sløyfa (100) omfatter en spenningsstyrt isolator (VCO) (104) med et styresignal inngang (103). Den faselåste sløyfa (100) omfatter også et første filter (110) og et andre filter (108). Det første filtret (110) har en vid frekvensrespons. Det andre filtret (108) omfatter et lagringselement (222) og har en smal frekvensrespons. Den faselåste sløyfa (100) omfatter også en omskiftingskrets (106) som bestemmer hvilket av de to filtrene (110, 108) som blir koplet til den spenningsstyne oscillatoren (104).
NO934391A 1991-06-05 1993-12-03 Radio med rask faselaast sloeyfe NO934391L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/710,637 US5175729A (en) 1991-06-05 1991-06-05 Radio with fast lock phase-locked loop
PCT/US1992/004604 WO1992022147A1 (en) 1991-06-05 1992-06-03 Radio with fast lock phase-locked loop

Publications (2)

Publication Number Publication Date
NO934391D0 NO934391D0 (no) 1993-12-03
NO934391L true NO934391L (no) 1993-12-03

Family

ID=24854894

Family Applications (1)

Application Number Title Priority Date Filing Date
NO934391A NO934391L (no) 1991-06-05 1993-12-03 Radio med rask faselaast sloeyfe

Country Status (10)

Country Link
US (1) US5175729A (no)
EP (1) EP0587760A4 (no)
JP (1) JPH06510642A (no)
AU (1) AU650362B2 (no)
BR (1) BR9206080A (no)
CA (1) CA2102496A1 (no)
FI (1) FI935416A7 (no)
MY (1) MY129940A (no)
NO (1) NO934391L (no)
WO (1) WO1992022147A1 (no)

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Also Published As

Publication number Publication date
US5175729A (en) 1992-12-29
NO934391D0 (no) 1993-12-03
AU2178592A (en) 1993-01-08
CA2102496A1 (en) 1992-12-06
WO1992022147A1 (en) 1992-12-10
AU650362B2 (en) 1994-06-16
JPH06510642A (ja) 1994-11-24
FI935416A0 (fi) 1993-12-03
BR9206080A (pt) 1994-08-02
FI935416A7 (fi) 1993-12-03
EP0587760A1 (en) 1994-03-23
EP0587760A4 (en) 1994-08-24
MY129940A (en) 2007-05-31

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