U-band 4 data signal wireless transmission circuit (PT2262)

Shown is a U -band 4 data signal wireless transmission circuit using the PT2262 chip . The circuit is composed of an operating switch circuit,
a modulation encoding chip and an output transmission circuit . Operate the switch SWO-SW3 and input control instructions to the chip. The PT2262 can
select the carrier frequency according to the switch instructions and output it from the @ pin. After being driven by the transistor, the signal is emitted by the transmitter circuit .