The 1175DP41B1925 from Johanson Technology is a ceramic diplexer with a lower pass band frequency from 900 to 1450 MHz and upper pass band frequency from 1650 to 2200 MHz. It can handle up to 500 mW of CW power and has an insertion loss of 1.62 dB. The diplexer provides a return loss of over 9.5 dB and an attenuation of 30 dB. It is available in surface mount package.
