Patent classifications
H
ELECTRICITY
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H03
ELECTRONIC CIRCUITRY
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H03F
AMPLIFIERS
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2203/00
Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
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H03F2203/20
Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers
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H03F2203/21
with semiconductor devices only
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H03F2203/211
using a combination of several amplifiers
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H03F2203/21151
An output signal of a power amplifier being controlled by controlling power signal, e.g. by an inductive coupler
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H03F2203/21151

RADIO FREQUENCY SWITCH CIRCUIT, WIRELESS TRANSCEIVER SYSTEM, AND ELECTRONIC DEVICE
20250096745 · 2025-03-20 · ·

This application discloses a radio frequency switch circuit and an apparatus. An output end of a power amplifier (PA) output matching network is connected to an antenna, and an input end of the PA output matching network is connected to a PA. A low noise amplifier (LNA) input matching network includes a first coupling device, a second coupling device, and a switching device. The first coupling device is connected to the antenna, the switching device and the LNA, the switching device is connected to the second coupling device, and the second coupling device is connected to an LNA. This increases an output power of the PA output matching network and improves work efficiency.