Designer and manufacturer of high performance RF filters

Active & passive RF solutions, Filters

Custom filters


Filtronic has extensive knowledge and expertise in the design, development and production of custom filters that dates back to 1977.

Our custom filters products include metal cavity filters, ceramic, combline, interdigital, lumped element, suspended substrate, waveguide and thin-film filters. We are experts in filter topology, offering rapid prototyping and reduced development cycles.

Our team of highly experienced engineers work with customers to ascertain optimum technologies dependent upon specific filter requirements, e.g. size, response, power handling, insertion loss and rejection. We are experts in solving complex filter challenges, such as narrow guard band, tight rejection specs or close-to-the-pass band. We understand filter topology and can work with the perfect technology for each challenge, while offering rapid prototyping and reduced development cycles.


  • Experts in SWAP reductions
  • Range of environmental conditions
  • Material expertise
  • Bespoke designs, working to a customer’s form factor

Get in touch

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    Email us or call us on +44 1740 618 800

    With market leading experience across many sectors including defence & aerospace, public safety and telecommunications infrastructure, chances are good that we have successfully solved a similar problem in the past.