The 900 MHz Ceramic Notch filter from NIC has a passband from 548 to 1252 MHz. It has an insertion loss of 1.5 dB with a notch bandwidth of 35 MHz. The filter can handle up to 1 W of input power and has an attenuation of 28 dB with a return loss of over 12 dB. It is available with SMA female connectors and measures 2.75 x 1.37 x 0.59 inches. The frequency range can be customized based on a requirement.