Couplers

High-frequency directional couplers designed with high-permittivity ceramic materials for compact size and stable performance across wide temperature ranges.

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All Couplers

Knowles directional couplers are passive microwave components designed to split or combine RF signals for precise sampling and measurement

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Quadrature Hybrid Couplers

Knowles Quadrature Hybrid Couplers are passive microwave components that split signals into two outputs with 90-degree phase difference.

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Resistive Couplers

Knowles resistive couplers are passive microwave components designed for broadband signal sampling and power monitoring from DC to 40 GHz.

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Educational Resources

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Balancing Performance with Compact Quadrature Hybrid Couplers

A quadrature hybrid coupler splits a signal into two equal outputs with a 90° phase difference while improving load matching.

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The Roles of Couplers, Combiners, and Dividers in Radar Power Amplifiers

At the most basic level, high-power amplifiers (HPAs) take signals from the waveform generator and increase the signal level to a higher power.

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Build-to-Print Services for Thin Film Circuit Design and Construction

As the name implies, “thin film” is a precisely deposited layer of material used to fabricate electronic components.

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RF/Microwave Products Catalog

Advanced RF and microwave components engineered for demanding environments.

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Microwave Products Guide

Information and recommendations about Knowles' DLI brand of Microwave Products.

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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...

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Quadrature Hybrid Couplers

Couplers for high frequency applications

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Knowles Directional Couplers

Knowles provides a broad range of directional couplers in chip and wire hybrid and solder surface mount applications. By usi...

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