I have an RF power amplifier (PA) for a transceiver module I'm designing. My transceiver is capable of outputting +14 dBm at the 915 MHz ISM band and the RF PA will be used to further amplify the output to +30 dBm. When not requiring the 1W output power, I would like to use the shutdown mode of the PA.
Would it be possible to have a SPST RF switch with one end connected on the RF input to the PA and the other to its output to bypass the PA when shutdown? Will this affect the RF too much (if so, how)?
The other option would be to have two SPDT RF switches to create separate RF paths - except this adds an extra 0.5 dB insertion loss.