The AM3032 from Atlanta Micro is a Tunable Filter with Frequency 2.5 to 4.5 GHz, Tunable Frequency 2.5 to 4.5 GHz, Bandwidth 2000 MHz, Rejection 50 dB, Input Power 27 dBm. Tags: Surface Mount, Digitally Controlled. More details for AM3032 can be seen below.