H - Electricity – 03 – F
Patent
H - Electricity
03
F
H03F 1/00 (2006.01) H03F 1/02 (2006.01) H03F 1/26 (2006.01) H03F 1/32 (2006.01)
Patent
CA 2495528
A feedforward amplifier (10) employing high efficiency main amplifier (16) and error amplifier (34) with amplifier devices biased in a lower bias class. Small signal nonlinearities in the gain response of the amplifier devices are compensated by a small signal gain adjustment circuit (22, 24). The resulting gain response is substantially linear over the entire usable range of RF input power (RF IN).
L'invention concerne un amplificateur à correction aval (10) faisant appel à des amplificateurs principaux (16) et/ou à des amplificateurs d'erreurs (34) présentant un rendement élevé, comportant des dispositifs amplificateurs polarisés dans une catégorie de polarisation inférieure. Les non-linéarités des petits signaux dans la réponse en gain des dispositifs amplificateurs sont compensées par un circuit d'ajustement de gain en petits signaux (22, 24). La réponse en gain obtenue est sensiblement linéaire sur la totalité de la plage utilisable de puissance d'entrée RF.
Gurvich Mark
Maslennikov Nikolai
Powerwave Technologies Inc.
Ridout & Maybee Llp
LandOfFree
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