Flexible bandwidth reduction technique for envelope tracking using low-pass finite impulse response filters
Electronics Letters(2020)
摘要
In this Letter, low-pass finite impulse response filters are proposed to flexibly reduce the envelope bandwidth (BW) requirements for envelope tracking (ET) supply modulators. A second-order power ET (PET) approach is used as a comparative study, and a `design zone' for shaping function coefficients is identified for the first time. Proposed 20 and 10 MHz low-pass filters (LPFs) are used to reduce...
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关键词
FIR filters,low-pass filters,power amplifiers
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