A family of high-selectivity filters installed in the RF transmission path between radio communication transmitters and antennas to suppress spurious harmonics and
out-of-band noise, thereby allowing co-located
operation of power transmitters with receivers.
band-pass type filters tuned to the transmitter frequency, which provide high attenuation for the transmitter out-of-band noise
high-selectivity notch-type filters, tuned to selected
frequencies to remove transmitter spurious