23-05-2023 дата публикации
Номер: CN116155208A
Принадлежит:
The invention discloses a bandwidth enhanced internal matching power amplifier with harmonic suppression. The power amplifier comprises an input port, a power divider, a phase shift microstrip line, a carrier power amplifier, a peak power amplifier, a grounding branch knot, a load modulation network and an output port. According to the invention, the Doherty structure is firstly adopted to improve the efficiency of the power amplifier, and when the power fallback peak power amplifier is closed, the second harmonic of the carrier power amplifier is suppressed in the frequency band, and the power value at the second harmonic is reduced, so that the output power in the working frequency band can reach the maximum, and the purpose of improving the efficiency is further realized. According to the Doherty power amplifier, a section of grounding branch knot is added behind a peak power amplifier of the Doherty power amplifier, and when the power backoff peak power amplifier is closed, the frequency ...
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