The model AM1880-1960D268 surface-mount monoblock ceramic duplexer from Anatech Electronics is designed for use in base station transceivers serving wireless communication applications from 1850 to 1960 MHz. Transmit-to-receive response includes insertion loss from 1850 to 1910 MHz of 3.4 dB or less and return loss of at least 11 dB. Attenuation ranges from 45 dB from DC to 1000 MHz to 38 dB from 2040 to 2100 MHz. Antenna-to-receiver response includes insertion loss of 3.7 dB or less from 1930 to 1990 MHz and attenuation ranging from 51 dB from 1850 to 1910 MHz to 30 dB from 2150 to 2210 MHz. Rejection in the transmit band is at least 54 dB and 49 dB in the receive band. The 50-Ohm duplexer will handle RF input power of 2 W and measures 4.6 x 23 x 6.5 mm.