The SiMF23R35/1R5-3 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 22.8 to 24 GHz, Center Frequency 23.4 GHz, Insertion Loss 3.5 dB, Rejection 30 dB @21.2GHz&25.2GHz, 40 dB @20.6GHz&25.4GHz, 60 dB @DC~18GHz, 45 dB @31~35GHz, Upper Rejection 30 to 45 dB. Tags: Surface Mount, Cavity Filter. More details for SiMF23R35/1R5-3 can be seen below.