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1. WO2006099071 - A WIDEBAND TUNING CIRCUIT

Publication Number WO/2006/099071
Publication Date 21.09.2006
International Application No. PCT/US2006/008468
International Filing Date 10.03.2006
IPC
H04B 1/26 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
06Receivers
16Circuits
26for superheterodyne receivers
CPC
H03B 19/00
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
19Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
H03B 19/12
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
19Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
06by means of discharge device or semiconductor device with more than two electrodes
08by means of a discharge device
12using division only
H03B 19/14
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
19Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
06by means of discharge device or semiconductor device with more than two electrodes
14by means of a semiconductor device
H03D 7/161
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
DDEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
7Transference of modulation from one carrier to another, e.g. frequency-changing
16Multiple-frequency-changing
161all the frequency changers being connected in cascade
H03L 7/00
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
7Automatic control of frequency or phase; Synchronisation
H03L 7/099
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
099concerning mainly the controlled oscillator of the loop
Applicants
  • RFSTREAM CORPORATION [JP]/[JP] (AllExceptUS)
  • RFSTREAM AMERICA, INC. [US]/[US] (AllExceptUS)
  • KAMATA, Takatsugu [JP]/[JP]
Inventors
  • KAMATA, Takatsugu
Agents
  • STATTLER, John
Priority Data
60/661,11211.03.2005US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A WIDEBAND TUNING CIRCUIT
(FR) CIRCUIT DE REGLAGE A LARGE BANDE
Abstract
(EN)
Some embodiments provide an oscillator that produces a signal at a desired frequency for use in a tuner. The oscillator comprises a filter and a frequency divider circuit comprising one or more frequency dividers in sequence, each frequency divider reducing a received frequency by a predetermined proportion. The frequency of the oscillator is controlled by a tuning code comprising a fine tuning code applied to the filter and a coarse tuning code applied to the frequency divider circuit. The filter is used to produce an initial frequency according to the fine tuning code and the frequency divider circuit divides down the initial frequency according to the coarse tuning code to produce a final frequency of the oscillator. Some embodiments provide an automated method and apparatus for tuning the oscillator to produce a signal at a desired frequency where the coarse tuning code is determined before the fine tuning code.
(FR)
Certains modes de réalisation de l'invention concernent un oscillateur qui émet un signal à la fréquence souhaitée vers un syntoniseur. L'oscillateur comprend un filtre et un circuit diviseur de fréquence composé d'un ou de plusieurs diviseurs de fréquence séquentiels qui divisent chacun une fréquence reçue par une valeur prédéterminée. La fréquence de l'oscillateur est stabilisée par un code de réglage qui comprend un code de réglage fin appliqué au filtre et un code de réglage grossier appliqué au circuit diviseur de fréquence. Sur la base du code de réglage fin, le filtre produit une fréquence initiale, et, sur la base du code de réglage grossier, le circuit diviseur de fréquence abaisse la fréquence initiale pour obtenir la fréquence finale de l'oscillateur. D'autres modes de réalisation concernent un procédé et un dispositif automatisés de réglage de l'oscillateur qui permettent d'obtenir un signal de fréquence souhaitée, le code de réglage grossier étant déterminé avant le code de réglage fin.
Also published as
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