ReliaSat

ReliaSat is a UK-based manufacturer of high-frequency satellite communications technology, specialising in the design and production of RF millimetre-wave systems, transceivers, phased array antennas, and monolithic microwave integrated circuits (MMICs). Founded in November 2020, the company is a world-leading expert in Ka-band communication technology, offering solutions from L-band through to Q/V-band across the communications, satellite, aerospace, defence, automotive, and 5G markets.

In March 2023, ReliaSat significantly expanded through the acquisition of Arralis Technologies, absorbing its European intellectual property and manufacturing facilities. This acquisition repositioned the company as a focused Ka-band high data rate satellite specialist targeting both present-day and next-generation Low Earth Orbit (LEO) constellations. The engineering team is composed of experienced PhD-level engineers with contracts from clients including the European Space Agency (ESA) and the UK Space Agency.

ReliaSat offers both off-the-shelf products with short lead times and custom design services for large-scale projects. Its product portfolio spans active phased array beam steering antennas, wideband K/Ka-band transceiver modules, power amplifiers, low noise amplifiers, and millimetre-wave radar baseband boards — enabling high data rate satellite payload design, ground station infrastructure, in-flight connectivity, and LEO constellation communications at commercial price points.