作者: Guy Klemens , Babak Nejati , Jose Cabanillas , Calogero D. Presti
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摘要: An impedance matching circuit with at least one tunable notch filter for a power amplifier is disclosed. The amplifies an input radio frequency (RF) signal and provides amplified RF signal. performs output the includes filter. Each has that can be varied in to provide better attenuation of undesired attenuates may include (i) first attenuate second harmonic and/or (ii) third