Frequency converters

Convert frequency. Preserve performance.

Built to preserve signal integrity, maximise performance and simplify complex architectures, our solutions combine precision RF engineering with systems-level expertise. From satellite payloads and ground infrastructure to defence and high-performance networks, we deliver the frequency conversion technology that keeps critical signals moving with greater precision, reliability and control.

Connecting systems across the frequency spectrum

Modern communication systems depend on the ability to move signals accurately between frequencies while preserving performance, stability and quality.

Filtronic develops advanced frequency conversion technologies, including block upconverters (BUCs), low-noise block downconverters (LNBs) and low-noise amplifiers (LNAs), supporting complex RF architectures and reliable uplink and downlink communications across space, defence and terrestrial applications.


By combining deep RF expertise with advanced manufacturing capability, we help customers overcome the challenges of high-frequency system design and deliver communications that perform when it matters most.

Engineered for the world's most demanding environments

Signal integrity

Signal integrity

Maintaining exceptional signal quality through precise frequency translation and advanced RF design.

High-frequency performance

High-frequency performance

Supporting demanding RF, microwave and mmWave applications across increasingly complex communication systems.

Mission reliability

Mission reliability

Designed for environments where consistent operation and dependable performance are essential.

System optimisation

System optimisation

Helping customers maximise efficiency, simplify integration and improve overall communications performance.

Our SSPA platforms

BUC and LMB’s



Filtronic’s Block Upconverters (BUCs) and Linearised Block Modules (LMBs) provide the frequency conversion and amplification capability required for high-performance satellite communications and advanced RF systems.

Designed to support demanding uplink architectures, our solutions deliver exceptional signal quality, efficiency and reliability across critical communication links.

  • Supporting precise conversion between intermediate and RF frequencies.
  • Combining conversion and amplification capability to optimise system efficiency.
  • Engineered for demanding satellite and communications applications.
  • Designed for continuous operation in critical environments.

LNA’s



Low Noise Amplifiers are critical to maintaining receiver sensitivity and system performance, particularly where signals are weak and reliability is essential.

Filtronic develops advanced LNA solutions that deliver exceptional noise performance, stability and signal integrity across demanding communication environments.

  • Ultra-low noise performance.
  • Maximising receiver sensitivity and preserving signal quality.
  • High-frequency operation.
  • Supporting advanced RF and microwave applications.
  • Designed to deliver consistent operation in challenging environments.
  • Supporting a wide range of communication architectures.

Where frequency changes, performance doesn’t

Space and satellite communications

Connecting satellites, gateways and users

Frequency conversion is fundamental to satellite communications, enabling signals to move efficiently between spacecraft, ground infrastructure and end users.
Filtronic provides advanced BUC, LMB and LNA solutions that support high-performance satellite networks and next-generation space architectures.

Defence and secure communications

Precision across the frequency spectrum

Defence systems depend on precise and reliable RF performance across complex communication, sensing and electronic warfare architectures.
Filtronic frequency conversion technologies enable dependable operation where accuracy, resilience and performance are critical.

Advanced communications

Supporting the evolution of high-frequency networks

As communications systems move towards higher frequencies, greater bandwidth and increased complexity, efficient frequency conversion becomes increasingly important. Filtronic helps enable next-generation communication networks through advanced RF subsystem technologies.

Amplifying the signals that connect, protect and advance the world