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1. WO2006036749 - APPARATUS AND METHOD OF OSCILLATING WIDEBAND FREQUENCY

Publication Number WO/2006/036749
Publication Date 06.04.2006
International Application No. PCT/US2005/034021
International Filing Date 21.09.2005
IPC
H03L 7/08 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
7Automatic control of frequency or phase; Synchronisation
06using a reference signal applied to a frequency- or phase-locked loop
08Details of the phase-locked loop
CPC
H03L 7/087
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
7Automatic control of frequency or phase; Synchronisation
06using a reference signal applied to a frequency- or phase-locked loop
08Details of the phase-locked loop
085concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
087using at least two phase detectors or a frequency and phase detector in the loop
H03L 7/113
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
7Automatic control of frequency or phase; Synchronisation
06using a reference signal applied to a frequency- or phase-locked loop
08Details of the phase-locked loop
10for assuring initial synchronisation or for broadening the capture range
113using frequency discriminator
H03L 7/187
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
7Automatic control of frequency or phase; Synchronisation
06using a reference signal applied to a frequency- or phase-locked loop
16Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
18using a frequency divider or counter in the loop
183a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
187using means for coarse tuning the voltage controlled oscillator of the loop
Applicants
  • GCT SEMICONDUCTOR, INC. [US]/[US] (AllExceptUS)
  • PARK, Joonbae [KR]/[KR] (UsOnly)
  • LEE, Seung-Wook [KR]/[KR] (UsOnly)
  • LEE, Jeong-Woo [KR]/[KR] (UsOnly)
  • LEE, Kyeongho [KR]/[KR] (UsOnly)
Inventors
  • PARK, Joonbae
  • LEE, Seung-Wook
  • LEE, Jeong-Woo
  • LEE, Kyeongho
Agents
  • WESOLOWSKI, Carl, R.
Priority Data
10-2004-007573622.09.2004KR
11/227,43916.09.2005US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) APPARATUS AND METHOD OF OSCILLATING WIDEBAND FREQUENCY
(FR) APPAREIL ET PROCEDE D'OSCILLATION DE FREQUENCE A BANDE LARGE
Abstract
(EN)
An apparatus for oscillating a frequency, which comprises a phase lock loop, see fig. 5, a variable frequency divider() is shown, that divides a first frequency (Fout) signal by a division ratio to generate a second frequency signal, this based on a comparison of reference frequency clock input (Fref) and feedback input to phase/frequency detector (510). A charge pump (520) and loop filter (530) are shown with a divider (550) that divides the second frequency signal (355) to allow the correct feedback frequency to be realized. The VCO (540) inherently has a resonant circuit including the capacitors to be selected and a corresponding control voltage to set the frequency of operation as well as an active circuit (320) for proper gain.
(FR)
La présente invention a trait à un appareil et un procédé d'oscillation d'une fréquence à bande large. L'appareil comporte: une unité d'oscillation de fréquence pour l'oscillation d'une fréquence prédéterminée; une boucle à phase asservie pour la comparaison de la fréquence oscillée et une fréquence de référence par la rétroaction de la fréquence oscillée provenant de l'unité d'oscillation de fréquence et la fixation d'une fréquence d'oscillation de l'unité d'oscillation de fréquence; et une unité de division variable pour la variation d'un rapport de division pour se rapprocher de la bande de fréquence requise par la fréquence d'oscillation et la division de la fréquence d'oscillation.
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