Browse RF/MW Filters
View All Bandpass Filters
Bandpass Filters
High-selectivity microwave components designed for surface mount and chip-and-wire applications across 0.3 to 67 GHz.
View All Lowpass Filters
Lowpass Filters
Surface-mount and chip-and-wire microwave components designed to attenuate high-frequency signals while passing lower frequencies.
View All Highpass Filters
Highpass Filters
Microwave filters designed to block low-frequency signals while passing higher frequencies from 0.8 GHz to 67 GHz.
Educational Resources
Blogs
Catalogs
Whitepapers
Videos
Filters in Radar Receivers
In the fourth installment in our RF Components for Radar series we cover how RF filters help radar receivers isolate desired signals, reject interference, and enable high-performance digital beamforming in modern radar systems.
The Role of Filters in Expanding Bandwidth for Electronic Warfare Receivers
Electronic warfare (EW) systems are an increasingly critical component of modern warfare. They seek to control and exploit the electromagnetic spectrum to gain an advantage over adversaries while preventing them from reciprocating.
Switch Filter Banks for Agile RF Receiver Design in Radar
For the third installment in our RF Components for Radar series, miniaturized switch filter banks help modern radar systems adapt to changing missions and crowded RF environments while maintaining high performance.
Combining Filter Technologies to Create Higher-Value Compact Filters
There are hundreds of filter applications operating across a wide range of frequencies, which presents a challenge for filter designers since most filter designs don't inherently operate across these wide ranges.
Filter Basics 9: An Introduction to Poles and Zeros
To help customers with filter selection, we generally provide a lot of information on what our filters can do.
Microstrip Filters Deliver Small Size at High Frequencies
When selecting a filter implementation, one factor that is common across all frequencies is optimizing the size of the filter given the application and the required performance.
RF/Microwave Products Catalog
Advanced RF and microwave components engineered for demanding environments.
Microwave Products Guide
Information and recommendations about Knowles' DLI brand of Microwave Products.
RF/Microwave Products for Space Applications
High‑reliability components engineered for mission‑critical space applications.
Understanding the Nuances of Space-Level Qualification and Screening of Filters
Selecting high-quality, high-reliability electronic components is a necessity for meeting the rigorous requirements of space...
Microstrip Filter Topologies
Learn about microstrip filter choices and how they address mmWave filtering challenges.
Tolerance and Size Analysis for mmWave Filter Manufacturing
Learn about the impact of manufacturing tolerance on mmWave filters.
Why Can't You Build Just One Filter?
FAQ: Why can't you build just one filter?
Why is CTE Important in Surface Mount Filters?
CTE is critical for ensuring reliability in surface-mount RF filters.
Build-to-Print Filters and Tolerances
We design, manufacture and test Build-To-Print (BTP) thin film filters. Our understanding of tolerances helps maximize RF pe...
When Build-to-Print Thin Filters Aren't the Right Choice
There are times when Build-to-Print (BTP) filters might not be the right choice.
X Band Catalog Filters
Learn more about Knowles' DLI Brand of X Band Filters of varying bandwidths and rejection requirements.
Product Documentation
RF/MW Filter Technologies
Knowles filter technologies deliver high-performance, compact RF solutions from VHF to V-band.
High Reliability Components for Satellite Communications
Knowles RF/microwave products deliver compact, reliable satellite communication solutions with stable performance.
Switched Filter Banks
Switched filter banks enable compact, highly integrated designs while maintaining reliability across frequency bands.
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