High efficiency power amplifier

H - Electricity – 03 – F

Patent

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Details

H03F 1/32 (2006.01) H03F 1/02 (2006.01) H03F 1/34 (2006.01)

Patent

CA 2234335

A high efficiency power amplifier 600 consists of a non-linear radio frequency (RF) Doherty power amplifier (67) and a linearization circuit, such as, for example, a Cartesian Feedback circuit (33), an RF feedback circuit (38), an IF feedback circuit (48), or a feedforward circuit (55). The Doherty amplification stage (67) may be implemented with a BJTs, FETs. HBTs, H-FETs, PHEMTs, or any other type power transistor technology or device.

L'invention est un amplificateur de puissance à rendement élevé (600) qui est constituée d'un amplificateur de puissance radiofréquence (RF) non linéaire de Doherty (67) et d'un circuit de linéarisation tel qu'un circuit à rétroaction cartésienne (33) par exemple, d'un circuit de rétroaction RF (38) et d'un circuit de rétroaction FI (48) ou d'un circuit à antéréaction (55). Le stage d'amplification de Doherty (67) peut être réalisé au moyen de transistors bipolaires à jonction, de transistors à effet de champ, de transistors bipolaires à hétérojonction, de transistors à effet de champ à hétérojonction, de transistors à grande mobilité électronique ou de tout autre type de transistor ou de dispositif de puissance.

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