Model SWF-60390350-28-L1 is a custom designed Ka-Band waveguide lowpass filter. The filter features low insertion loss and high rejection. The filter shows 1.2 dB maximum insertion loss from 26 to 60 GHz and greater than 50 dB rejection in the frequency range of 90 to 145 GHz.

The filter is equipped with standard WR-28 waveguide with UG599/U flange. The lowpass filter family also includes the filters in the frequency bands of K, Q, U, V, E, W and F under different model numbers.