Model SWF-74305350-12-B1 is an E band, waveguide bandpass filter that is used to pass the frequency range of 71 to 76 GHz, while rejecting the frequency range of DC to 67 GHz and 81 to 90 GHz.

The nominal insertion loss of the bandpass filter is 2 dB and the typical rejection is 50 dB. The standard interface offers WR-12 waveguides with UG-387/U flanges.

Since both low and high end cut off frequencies can be selected by modifying the design, various custom models are available.