The SiMS23/3-6D2 from Sainty-Tech Communications Limited is a Band Pass Filter with Frequency 21.6 to 24.9 GHz, Center Frequency 23.25 GHz, Insertion Loss 2 dB, Rejection 30 dB @19.8GHz&26.8GHz, 40 dB @18.6GHz&28.8GHz, 55 dB @DC~17GHz, 45 dB @32~37GHz, Upper Rejection 30 to 45 dB. Tags: Surface Mount, Cavity Filter. More details for SiMS23/3-6D2 can be seen below.