Radio frequency amplification apparatus

Details Radio frequency amplification apparatus Radio frequency amplification apparatus

2006-07-25

2008-09-16

Pascal, Robert (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including frequency-responsive means in the signal...

Reexamination Certificate

active

07425873

ABSTRACT:
An intermodulation distortion which is output from a final-stage amplifier15is fed back to an inter-stage matching circuit14via a first control circuit16and a second control circuit17. The first control circuit16and the second control circuit17control an amplitude and a phase of an intermodulation distortion to be fed back from the final-stage amplifier15to the inter-stage matching circuit14, such that a synthesized scalar of an intermodulation distortion input from a first-stage amplifier13to the final-stage amplifier15and amplified by the final-stage amplifier15and an intermodulation distortion newly generated by the final-stage amplifier15is reduced.

REFERENCES:
patent: 2007/0146074 (2007-06-01), Osman
patent: 2001-144550 (2001-05-01), None
patent: 2003-309435 (2003-10-01), None

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