Communications
High performance components used in point-to-point communications and larger communications networks.
The Knowles Advantage
Knowles provides the high-performance RF filters, capacitors, and EMI filtering solutions that ensure spectral purity and power integrity in tactical communication systems. Our components support wideband operation from VHF to Ka band, deliver low-loss filtering for SDR architectures, and meet stringent MIL-SPEC reliability standards—because when every word matters, failure is not an option.
Knowles’ components can be found in:
- Secure Avionics Communications: Solutions that enable jam-resistant, high-fidelity communication to ensure mission-critical clarity.
- Tactical Communication Headsets: Ruggedized boom microphone assemblies with MEMS technology and active noise cancellation for clear voice transmission.
- EMI-Filtered Avionics Connectors: Integrated connectors with advanced filtering to maintain signal integrity even under severe electromagnetic interference.
- Satellite Communication Links: Space-qualified RF components and filters that support secure Earth-to-space and inter-satellite transmissions.
- Electronic Warfare Communication Systems: Adaptive RF and microwave components designed for spectrum dominance, enabling secure, interference-resistant communications.
Mission-Ready Performance
Advancing Mission-Critical Connectivity
Knowles strengthens aerospace and defense communications with mission-ready components across harsh operational environments.
- Wideband RF Filters: Enable secure, high-performance VHF-Ka communications.
- RF Components: Precision parts for clear radar/SDR signals.
- High-Reliability Capacitors: Mission-critical performance in rugged environments.
- Connectors: EMI-protected connectivity for avionics and military systems.
- SWaP-Optimized Components: Compact, efficient designs for modern defense platforms.
- Voice Capture: Boom mics enable clear, intelligible communication in high-noise military environments.
Educational Resources
Blogs
Catalogs
Whitepapers
Videos
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Supporting RF Systems Using the CDL Protocol
Common Data Link (CDL) is a secure U.S. military communications protocol. Established by the Department of Defense (DoD) in 1991, CDL is the primary standard for intelligence, surveillance, and reconnaissance (ISR) data transmission, enabling full-duplex, jam-resistant digital communications between airborne platforms, ground stations, and naval vessels.
High-Performance Capacitors to Meet the Needs of Demanding Aerospace and Defense Applications
From military aircraft to electronic warfare defense systems, aerospace and defense applications are placing new demands on their power electronics.
Knowles Achieves a Benchmark for Excellence: MIL-PRF-55681-Qualified Capacitors for Mission-Critical Defense Applications
When it comes to aerospace and defense applications, every single component plays a role in the success and longevity of the system. Capacitors are vital in flight control systems, radar systems, signal intelligence equipment and more.
How Gallium Nitride (GaN) Semiconductors in Defense Power Supplies Affect Capacitor Selection
Defense applications tend to operate at high voltages and wide temperature ranges.
What Are EMI Filters?
To understand what an electromagnetic interference (EMI) filter is, and what it does, we need to first know what EMI is and why it needs to be filtered.
How The Shift to SiC-Based Semiconductors in Military Power Supplies Affects Capacitor Selection
To protect people and critical equipment, military-grade electronic devices must be designed to function reliably while operating in incredibly harsh environments.
RF/Microwave Products Catalog
Advanced RF and microwave components engineered for demanding environments.
Boom Microphones for Critical Communication and Specialty Performance
A guide to choosing the right boom microphone for your application, environment, communication and durability requirements.
SLC Capacitors Catalog
A comprehensive catalog of SLCs optimized for high‑reliability RF and power designs.
High-Performance Filters in Millimeter Wave Applications
Learn about mmWave filter characteristics and technology.
Tolerance and Size Analysis for mmWave Filter Manufacturing
Learn about the impact of manufacturing tolerance on mmWave filters.
Reduce SWaP, Increase Performance of Phased Arrays
An innovative filtering approach to handle an increasingly crowded RF spectrum.
What is the repeatability in RF Performance?
Knowles achieves high repeatability in RF performance using microstrip filter technology and thin-film manufacturing.
The Benefits of 3-Way and 6-Way Power Dividers
Knowles’ 3‑way and 6‑way power dividers deliver ~30% better performance, efficient board layouts, and C‑band to Ku‑band cove...
Quadrature Hybrid Couplers
Couplers for high frequency applications
Product Documentation
Switched Filter Banks
Switched filter banks enable compact, highly integrated designs while maintaining reliability across frequency bands.
Milli-Cap®
Milli-Cap® braodband capacitors provide ultra-low loss, high-Q performance with very low inductance and high resonance.
Opti-Cap®
Opti-Cap® broadband capacitors deliver ultra-low loss, resonance-free performance to 40GHz+ in compact, reliable designs.
RF Crossover
Knowles’ RF crossover simplifies board design by enabling DC-to-40GHz signal routing in a compact surface-mount component.
High Reliability Components for Satellite Communications
Knowles RF/microwave products deliver compact, reliable satellite communication solutions with stable performance.
RF/MW Filter Technologies
Knowles filter technologies deliver high-performance, compact RF solutions from VHF to V-band.
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Distributors & Reps
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