Passive and active signal conditioning specialists

Our engineering team are industry experts in designing high performance filters, combiners, and amplifiers that deliver world-class performance and reliability.

Passive & active RF solutions

Filtronic has a long history in the design and manufacture of leading-edge coverage enhancement products for the wireless industry. We are a key supplier of advanced high performance RF communications products to the telecommunications infrastructure and critical communications markets. Our products are used in wireless communication equipment, point-to-point communication systems and adjacent aerospace and defence sectors. Download our latest technologies brochure here

Lumped element filters

Lumped element technology is commonly used in applications where small size is required, especially at lower frequencies where transmission line devices might be excessively large. Both narrowband and broadband designs are available in high pass, low pass, band pass, band stop and multiplexer form.
  • Ideal for moderate to very wide bandwidths
  • Versatile topologies and multiple frequency bands
  • Perfect for applications where size and weight is important.
  • Can be designed for challenging environmental conditions such as high shock and vibration.
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Metal cavity filters

Filtronic has extensive expertise of machined and cast metal cavity filters.
  • Optimised rejection
  • Excellent for quick turnaround
  • Simplified design
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Suspended substrate filters

500MHz to 26GHz
Suspended Substrate Stripline (SSS) is traditionally a printed circuit technology that can be used for both broadband and narrowband filters.
  • Suitable for high pass, low pass and band pass filters
  • High pass and low pass can be cascaded together to form multi octave band pass filters and multiplexers
  • Utilising printed circuit technology
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Thin film filters

3GHz - 114GHz
Surface mountable thin film filters are available in band pass, band stop, high pass and low pass configurations.
  • Perfect for size and weight critical applications
  • Frequency range suitable from 3GHz to 114GHz


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Small cell filters

With the lower power of small cell products, the main drivers to a successful product are compact size, low weight and both high performance and efficiency. The filter has a significant impact on all of these drivers, so it is important to consider these in the technology and design approach of the filters. ‍
  • Miniature high performance filters for 5G
  • Designed to extend the capacity, speed and efficiency of a radio network
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Cross band combiners

Filtronic offers a wide range of cross-band combiners for different scenarios in the infrastructure sharing market. The filters are designed for various combination of 700, 800, 900, 1200, 1800, 2100 and 2600MHz frequency bands.
  • Supports different technologies; GSM, UMTS, CDMA, WCDMA and LTE
  • Covers wide range of wireless frequency bands; 700, 800, 900, 1200, 1800, 2100 and 2600MHz
  • Signals from multiple base stations
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Filtronic ushers in new leadership era with CEO Nat Edington

15 May 2024

King’s Award for Innovation 2024

7 May 2024

Filtronic launches into the future, securing a Strategic Partnership with SpaceX for Starlink constellation

24 April 2024

Navigating exciting horizons: Nat Edington assumes CEO role at Filtronic

2 April 2024