Types of RF Filters

A passive RF filter is a passive multiport device that allows signals to pass through at discreet frequencies but rejects any frequency outside of the specified range. Radio transmitters use low-pass filters to block harmonics that may interfere with transmission signals. These designs use specific topologies based on frequency and power handling requirements.


Bandpass Filters

Bandpass filters are offered with very narrow band high skirts to medium band and broad band with low loss. High power applications have a wide range of topologies such as Cavity, Combline, Interdigital, Coaxial, Suspended Substrate Stripline, Waveguide and mixed-Topologies.


Lowpass Filters

Our Lowpass filters are low loss broad band filters, providing high power applications from a wide range of topologies such as Lumped Element, Coaxial, and Suspended Substrate Stripline as well as multiple topologies. Lowpass filters are mainly designed using the Chebyshev type and for those requiring sharp cutoff the modified elliptic type is used.


Highpass Filters

Our Highpass filters are broad band filters with low loss offered in high power applications with a wide range of topologies such as Lumped Element, Suspended Stripline, and Multiple Topologies.


Notch/Bandstop Filters

Our Notch/Bandstop filters are offered with a very narrow band high rejection to medium band through broad band filters with low loss for high power applications from a wide range of topologies such as Cavity, Combline, Interdigital, Coaxial, Suspended Substrate Stripline, Waveguide and Multiple Topologies.


Diplexers & Multiplexers

Our Diplexer and Multiplexers filters are realized using a combination of Bandpass, Lowpass and Highpass filters we offer them in a combination of Multiple Topologies to best suit performance.

Celebrating 65 Years of Manufacturing Excellence  Learn More →
America's Oldest. A History of Innovation.

Today at Epec, the customer comes first, and everything we do must be put through that filter. Whether it is developing e-commerce platforms to make it easier to work with us, or creating a NPI (new product introduction) process that helps our customers get to market faster, or the other 10 new projects we have in process, we must focus on building the new. By doing that every day, and by always making the customer our top priority, we plan on being here for another 65 years and then some.

Learn more about our 65 year story →



Celebrating 65 Years - Epec Engineered Technologies