Low pass filters simplify measurements in microwave systems and enhance system performance by effectively reducing undesirable signals, i.e. harmonics, to an acceptably low level.

All models provide a very wide ‘stop band’ of frequencies above the recommended waveguide band. The pass band VSWR is generally better than 1.5:1 and in ser tion loss less than 1.5 dB.

Filters of this type are particularly suitable for applications involving swept or slotted line measurements.

A range of standard models is available as detailed below. Customised and special models can be combined with other devices.
For example a low pass filter combined with waveguide to coax adaptor can also be supplied.


  • 40 dB Stop Band Rejection
  • Models Available up to 220GHz
  • High Frequency Models
    Available on Request