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PPM Systems has designed and produced 90 custom filters for the British Army spectrum team based at Blandford Camp to support the Army’s Battlefield Tactical Communication and Information Systems (BATCIS) programme to upgrade its capability.

The custom filters include multiple designs of narrow band cavity filters in band pass and band stop versions. They are an important element that allow for increased co-location and integration of systems onto common platforms. The use of filters reduces intermodulation and out of band noise, providing optimum signal levels and traffic throughput.

Cavity filters are ideal where low insertion loss and medium to high power handling is required with high selectivity and out of band rejection. PPM Systems can supply custom filters in a range of designs and technologies including:

  • lumped element (LC)
  • cavity and comb filters
  • microstrip
  • ceramic coaxial and helical filters.

Jack Richardson