Microwave and mmWave Filters, Couplers, Power Dividers, Gain Equalizers, Bias Networks and Resonators

Knowles Precision Devices DLI brand Microwave and mmWave products integrate two core competencies that have been honed for over 40 years; ceramic expertise and thin film manufacturing.

Our technologies addresses the challenge of implementing high performance mmWave filters for Radar, EW and 5G applications.

The Knowles Precision Devices DLI brand of Microwave and mmWave products covers:

  • Bandpass filters designed from 800MHz to 67GHz
  • Filter Size reduction: up to 20x using CG material based microstrip filters.
  • Extremely High Repeatability through Precision Thin Film Fabrication
  • Temperature Stable over -55 to +125°C

To learn more about our products, please see our RF/MW Product Catalog.

Filter Technology

Our bandpass filters offer excellent performance in a small footprint. 

Bandpass Filters

Our bandpass filters offer excellent performance in a small footprint. 

Lowpass Filters

Knowles DLI brand lowpass filters are designed to offer advantages utilizing our high-k ...

Highpass Filters

High pass filters suppress spectrum from DC to desired frequency. The remaining spectrum or RF ...

Cavity Filters

Cavity filters offer narrow bandwidths and low IL. Designed from 6GHz-67GHz. 

Couplers

High frequency directional couplers incorporating Knowles DLI brand's high permittivity ...

High Frequency RF Crossover

The use of complex multilayer printed circuit boards (PCBs) has become standard, even for the ...

Custom Design Filters

We have over 20 years of experience designing filters and other microstrip devices. 

Gain Equalizers

Knowles DLI brand’s line of Gain Equalizers were designed to compensate for module Gain ...

Power Dividers

Knowles DLI brand has recently released offerings of Wilkinson and Resistive Power Dividers.

Resonators

Knowles DLI brand Cavity Resonators provide an ideal solution for microwave or millimeter wave ...

Ceramic Resonators

Ceramic Coaxial Resonators are the best choice when cost, size and stability are project drivers ...

Bias Filter Networks

Designed to filter RF signals from bias and control lines from 10 MHz to 40 GHz.

Self Bias Networks

Knowles DLI brand takes advantage of our high permittivity ceramics and combines it with thin ...


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