H - Electricity – 03 – F
Patent
H - Electricity
03
F
H03F 1/32 (2006.01) H03F 1/02 (2006.01)
Patent
CA 2286531
A method and apparatus for reducing out-of-band frequency components of an RF amplified input signal, the amplified signal having both in-band frequency components and out-of-band frequency components, employ a feedforward network in which a microprocessor can sweep a frequency generator output connected to a mixer, the other input of the mixer being the amplified output, to find the carrier frequency of the input signal, and thereafter modify or control the feedforward circuit to reduce out-of-band frequency component energies in a particular manner. For example, gain and phase of a variable gain-phase network in a feedforward circuit structure can be modified for reducing the out-of-band frequency component energy.
Kim Kwang
Klein Stefan
Patel Sandip
Posner Richard D.
Roberts Wayne
Powerwave Technologies Inc.
Smart & Biggar
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