High frequency amplifier

Details High frequency amplifier High frequency amplifier

2007-02-20

2007-02-20

Nguyen, Patricia (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including plural amplifier channels

C330S12400D, C330S302000, C330S129000

Reexamination Certificate

active

11006453

ABSTRACT:
An amplifier for amplifying an input signal in a frequency band, has a quadrature signal divider for dividing the input signal into first and second components. The first component is amplified in a first transistor amplifier having a first frequency response to produce a first amplified component. The second component is amplified in second transistor amplifier having a second frequency response, different to the first frequency response, to produce a second amplified component. The first and second amplified components are combined in a quadrature signal combiner to produce an amplified input signal. The frequency response of the amplifier is related to the sum of the first frequency response and second frequency response.

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EPO Appl. No. 05257534.7, European Search Report, Feb. 2006.

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