Agile Notch Filter

Product Information


POC offers a family of high performance, frequency agile notch filters designed to establish a new level of performance for systems requiring very low insertion loss, fast tuning speeds and deep notch attenuation while operating with high-power RF transmitters or high sensitivity receivers. They are not only compatible with legacy communications equipment, but also particularly well suited for applications using modern, frequency agile communications. Standard configuration includes a 16-bit digital tuning control interface for superior tuning resolution enabling hot RF switching for high-power applications up to 1 KW transmitting power, across the specified bandwidth.

Electronic Warfare

In the presence of high power RF noise, friendly communications can be impacted along with those of opposing forces. Our Agile Notch Filter enables a new level of RF systems performance with very low reflected power and low insertion loss, while it’s high notch attenuation and fast tuning speed enable modern communications equipment to operate with minimal degradation.

Intelligence, Surveillance, and Reconnaissance

Today’s RF environment provides a range of signals for exploitation, along with significant RF interference from friendly and opposing forces. The passive design of POC's ANF provides a bi-directional solution for electronic intelligence, surveillance, and reconnaissance applications to protect sensitive receivers from friendly communications, or from opposing countermeasures.

Legacy Systems Enhancement

Older broadband active RF systems have had limited application on the modern battlefield due to their negative impact on friendly agile communications. Consider that by adding a POC's ANF to the legacy RF systems, they can be brought back into use, with minimal cost and improved performance.

Other applications include:

  • Shipboard RF communications
  • Land/Air based systems
  • Commercial RF wireless communications
  • Homeland Security and First Responder communications systems

Patent pending

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  • Passband range – factory configurable, 10 MHz to 4000 MHz (contact factory for higher frequency requirements)
  • Power handling – out-of-band: up to 1000 Watts; in-band: up to 50 Watts
  • Tuning speed – 1.0 μSec
  • Notch depth – factory configurable, 30 dB to > 100 dB
  • 3 dB notch width – 5% of center frequency
  • 30 dB notch width – 1% or less of center frequency
  • Low VSWR –
  • Insertion loss – design dependent, 0.1 to 1.3 dB (typical 0.5 dB)
  • Multiple simultaneous notches
  • RF connectors: SMA, N-type or other depending on RF power and system installation requirements
  • Designed to meet MIL-STD-810G and MIL-STD-461


Ground Systems

POC provides military, law enforcement and first responders with integrated wearable electronic solutions.

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Sensor Systems

POC plays a major role in Force Protection by providing cutting-edge, compact, ultra broadband tunable notch and band pass filters for radio communications, wireless data systems, CREW systems and jammers.

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Advanced Systems

POC provides long-range multi-sensor systems, hyper spectral detection and electro-magnetic detection systems that provide real-time ability to detect, recognize, identify and geo-locate distant targets.

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