Continuous gain compensation and fast band selection in a...

H - Electricity – 03 – L

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Details

H03L 7/187 (2006.01) H03L 7/093 (2006.01) H03L 7/099 (2006.01) H03L 7/10 (2006.01) H03L 7/107 (2006.01)

Patent

CA 2655463

A frequency synthesizer capable of high speed, low power, wideband operation including a method of gain compensation, and a method of fast voltage controlled oscillator (VCO) band calibration. In addition, the frequency synthesizer may include two or more switchable independent loop filters to facilitate wideband operation. Such a frequency synthesizer may be used in many applications, and in one example, may be particularly suitable for use in a multi-band, multi-standard transmitter or radio transceiver.

La présente invention concerne un synthétiseur de fréquence capable d'un fonctionnement en bande large, à vitesse élevée, de faible puissance incluant un procédé de compensation de gain, et un procédé d'étalonnage rapide de bande de l'oscillateur commandé en tension (VCO). De plus, le synthétiseur de fréquence peut inclure deux ou plus de deux filtres de boucle indépendants commutables pour faciliter le fonctionnement en bande large. Un tel synthétiseur de fréquence peut être utilisé dans de nombreuses applications et, dans un exemple, peut être particulièrement approprié pour être utilisé dans un émetteur multibande, multistandard ou dans un émetteur ~ récepteur radio.

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