What Filtronic does

Filtronic plc is a UK-headquartered designer and manufacturer of RF, microwave and millimetre-wave (mmWave) components and subsystems operating across a 300MHz to 175GHz frequency range. Founded in 1977 and listed on the AIM market of the London Stock Exchange (ticker FTC.L), the company serves four primary verticals: space and satellite communications (LEO constellation payloads and ground stations), aerospace and defence (radar, electronic warfare, secure communications), telecommunications infrastructure (5G E-band backhaul and XHaul), and critical communications (public-safety radio networks). Its product portfolio spans standard catalogue items such as the Cerus/Taurus E- and W-band SSPAs, Morpheus II/Hercules II transceivers and Hades X2 diplexers, bespoke GaN power amplifiers and QFN-packaged GaN devices, an extensive filter family, and the recently launched DIFI virtualised ground-station solution.

The company's commercial model is anchored on long-cycle, project-based B2B enterprise sales to a concentrated roster of major aerospace and defence primes and satellite operators — notably SpaceX, Airbus Defence and Space, Leonardo, BAE Systems and the UK Space Agency — with multi-year contracts ranging from low hundreds of thousands of pounds to £62.5m. Revenue is generated through hardware sales (SSPAs, transceivers, filters, waveguide components), custom product development, and contract microelectronic assembly services. Direct sales offices in the UK (Sedgefield HQ, Leeds, Manchester, Cambridge) and the US (Maryland) are supplemented by international distributors in Germany, Italy, Sweden, South Korea and India.

Filtronic's operating leverage is visible in the FY25 results: revenue of £56.3m (+121% YoY) and adjusted EBITDA of £17.0m (+248%) on the back of SpaceX Starlink GaN E-band shipments, with £14.5m cash and a self-funded £200m-capacity manufacturing footprint opened in February 2026. Strategic positioning is increasingly dual-use — serving commercial LEO constellations while building sovereign UK electronic warfare capability via the TEAM FORTITUDE consortium — and the order book reportedly covers 90% of FY27 consensus revenue, providing unusual near-term visibility for a small-cap hardware supplier.

Name

Filtronic

Legal name

Filtronic plc

Website

https://filtronic.com

Company type

Public

Founded year

1977

Operating status

Operating

Headcount range

101–250 employees

Short description

Filtronic plc designs and manufactures RF, microwave and mmWave components and subsystems (300MHz–175GHz) for SpaceX, Airbus, Leonardo and BAE Systems, serving LEO satellite communications, defence radar/electronic warfare, 5G backhaul and critical communications markets.

Ownership category

akta.pro rank

Product category

RF and Microwave Components

NAICS

Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing (334220), Other Communications Equipment Manufacturing (334290)

SIC

Radio & Tv Broadcasting & Communications Equipment (3663)

akta.pro primary industry

RF Front-End Modules (FEMs) & Integrated RF Modules (HDAHAMAA)

akta.pro secondary industries

RF Transceivers & RFIC SoCs (Cellular/Wi‑Fi/Bluetooth) (HDAHAMAE), Passive Filters & RF Passives (LC Filters/Diplexers/Baluns/Attenuators) (HDAHANAG), Microwave & RF Signal Chain ICs (Mixers/Detectors/Attenuators) (HDAHAMAL)

Keywords

• RF microwave components
• MmWave communication solutions
• Solid-state power amplifiers
• E-band transceivers
• GaN semiconductor packaging

Headquarters

HQ city

Shipley

HQ country

United Kingdom

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Technology or R&D, Infrastructure, Operations

Revenue model

1. RF Component Sales: Sale of standard and custom RF, microwave and mmWave components including SSPAs, transceivers, filters, and amplifiers to space, aerospace, defence and telecommunications customers.
2. Custom Product Development: Bespoke design and manufacturing services for custom RF solutions tailored to specific customer requirements, often involving long-term development programmes.
3. Contract Manufacturing Services: Hybrid manufacturing services including microelectronic assembly, PCB engineering, and electromechanical manufacturing solutions for external customers.
4. Filter and Component Manufacturing: Manufacturing of filters, waveguide components, and specialized RF assemblies for defence and space applications.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

Filtronic designs and manufactures RF, microwave and millimetre-wave components and subsystems spanning 300 MHz to 175 GHz, including GaN solid-state power amplifiers, E-band transceivers, filters, diplexers, transmit/receive modules and a DIFI-compliant virtualised satellite ground-station solution. Products are sold both as standard catalogue items and as bespoke custom designs to space, aerospace, defence and telecommunications infrastructure customers worldwide.

Product overview

Filtronic offers a comprehensive portfolio of RF, microwave, and mmWave solutions organized into three main categories: Standard Products (including Cerus, Taurus, Morpheus II, Morpheus X2, Hercules II, Hades X2 E-band transceivers and SSPAs, Tower Top Amplifiers, and Transmit/Receive Modules), Custom Products (GaN amplifiers, waveguide diplexers, cross band combiners, front end modules, and custom transceivers), and Filter Products (ceramic, combline, metal cavity, lumped element, thin film, suspended substrate filters, and interference mitigation solutions). The company also provides DIFI solutions for virtualized satellite ground stations. Products operate from 300MHz to 175GHz, serving space, aerospace, defence, telecommunications infrastructure, and critical communications markets.

Differentiator

Problem solved

Functional benefit

Products and services

• Cerus Series Solid-State Power Amplifiers (SSPAs) Filtronic's flagship catalogue of mmWave solid-state power amplifiers covering E-band and W-band frequencies, delivering market-leading linear mmW power for high-data-rate communications including space payloads, military and commercial mmWave links.
• Cerus 32 E-band SSPA >20W E-band solid-state power amplifier positioned as the highest-power commercially available E-band SSPA, targeting point-to-point applications in military or commercial airborne and non-terrestrial networks.
• Taurus E-band Power Amplifier 81–86 GHz E-band power amplifier designed to deliver high output power for commercial and military E-band applications.
• Morpheus II E-band Transceiver E-band transceiver module delivering high performance with linear Tx output power exceeding 24dBm, designed for XHaul backhaul and satellite communications.
• Morpheus X2 E-band Transceiver Next-generation E-band transceiver module with enhanced performance for mobile backhaul networks and high-capacity E-band links.
• Hercules II High-Power E-band Link Integrated E-band link combining the Morpheus II transceiver with Cerus 4 or 8 SSPA module to deliver ultra-high-power E-band links for high-speed backhaul networks.
• Hades X2 Active Diplexer Active diplexer for E-band radios featuring a built-in transmit power detector for simple calibration and automatic level control, reducing cost and boosting performance of E-band radio systems.
• Tower Top Amplifiers High-reliability tower-top amplifiers that improve uplink signal reception for critical communications networks and public safety radio systems.
• Transmit and Receive Modules (TRMs) High-performance transmit and receive modules used in demanding aerospace, defence, telecommunications and space applications, including AESA radar and EW sub-systems.
• GaN Amplifiers (Custom) Custom Gallium Nitride power amplifiers built with Filtronic's in-house high-reliability chip-and-wire assembly, delivering high RF power (>50W), high efficiency and superior linearity for defence and space applications.
• DIFI Solution for Virtualised Satellite Ground Stations Digital IF (DIFI) compliant product enabling fully virtualised satellite ground-station infrastructure and the transition to virtualised satcom ground networks for escalating data traffic.
• 550W Ka-Band Solid-State Power Amplifier (SSPA) High-power 550W Ka-Band solid-state power amplifier designed to replace older travelling-wave tube technology in satellite ground stations, supporting high-capacity satellite services including 5G and IoT.
• Custom RF Filter Products Family of custom RF filters — including ceramic, combline, suspended substrate, metal cavity, lumped element, thin film, small cell, switched filter banks and interference mitigation filters — designed to customer specifications for defence, space and telecom applications.
• Custom RF Combiner and Diplexer Products Custom RF combiner and diplexer products — including waveguide diplexers, in-band combiners, cross-band combiners and bespoke combiners — for specialised frequency-separation and signal-routing requirements.
• Custom Transceivers and Front End Modules Bespoke custom transceivers and RF front-end modules designed and manufactured to specific customer specifications for specialised applications.

Quantifiable outcome

• GaN E-band SSPA delivers more than double the output power of existing gallium arsenide alternatives
• +4 more outcomes

Named customers7 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Eight partnerships are on record, tiered core and major.

• TEAM FORTITUDEcoreStrategic or Co-development Partner · 1 September 2025Founding partner of UK partnership dedicated to delivering home-grown electronic warfare capabilities. Collaboration with PentenAmio and Mercury-EW offering flexible and scalable EW solutions to UK Ministry of Defence and AUKUS allied partners.
• SpaceXcoreStrategic or Co-development Partner · 1 January 2024Strategic partnership for ongoing supply of cutting-edge E-band Solid State Power Amplifiers (SSPA) for Starlink satellite constellation. Includes $62.5m multi-year GaN E-band contract, representing Filtronic's largest-ever order. The partnership includes equity warrants signaling SpaceX's confidence in Filtronic's growth potential.
• UK Space AgencycoreStrategic or Co-development PartnerNSIP funding recipient for development of 550W Ka-Band SSPA for satellite communications supporting 5G and IoT applications. £1.2m project to enable transition from older technology in satellite ground stations.
• European Space CustomermajorStrategic or Co-development Partner€7m three-year contract for RF assemblies for Low Earth Orbit satellite constellation programme with leading European aerospace manufacturer.
• LeonardomajorStrategic or Co-development PartnerDefence agreement for radar components and electronic sensor systems, building on existing customer relationship in the defence sector.
• UK Defence Prime ContractorcoreStrategic or Co-development PartnerPartnership secured following GaN packaging project development, providing proprietary high-power GaN semiconductor packaging solutions for defence applications.
• European Defence ClientmajorStrategic or Co-development Partner£13.4m contract for high-performance active components for major European defence programme, manufactured at new secure microelectronics facility.
• European Aerospace ManufacturermajorStrategic or Co-development PartnerLong-term partnership for satellite payload assemblies and RF solutions for LEO constellation programmes, including Airbus-built OneWeb satellites.

Scale indicators17 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• Skyworks Solutions: Skyworks is a leading RF semiconductor company with significant exposure to mobile and infrastructure markets. While broader and mobile-focused, it competes in mmWave front-end modules and 5G infrastructure RF—adjacent to Filtronic's telecom infrastructure business.
• Microchip Technology (Microsemi): Microchip acquired Microsemi, a major supplier of RF/microwave components and semiconductors for aerospace, defence, and space. Overlaps with Filtronic in satellite communications, defence RF subsystems, and high-reliability space-grade components as a broader incumbent.
• Analog Devices (Hittite legacy): Analog Devices is a broad analog/mixed-signal incumbent with deep RF/microwave heritage (Hittite). It produces transceivers, converters, and integrated RFICs spanning defence, instrumentation, and communications—overlapping with Filtronic's higher-frequency RF product lines.
• Teledyne Technologies (Teledyne Defence): Teledyne is a broad aerospace/defence/industrial conglomerate with deep RF, microwave, and electronic warfare capabilities across multiple subsidiaries. Competes with Filtronic in defence RF subsystems and space-grade components as a diversified incumbent.

Direct peers

• RFHIC Corporation: RFHIC is a Korean GaN specialist producing GaN SSPAs and MMICs for radar, EW, and satellite communications. Directly comparable to Filtronic's GaN SSPA business with overlapping frequency ranges and end customers.
• Qorvo: Qorvo is a leading RF semiconductor supplier with a strong GaN portfolio serving defence (radar, EW) and infrastructure markets. Directly competes with Filtronic in GaN amplifiers and integrated RF modules for aerospace/defence and base station applications.
• MACOM Technology Solutions: MACOM designs and manufactures high-performance RF, microwave, and mmWave semiconductors including GaN power amplifiers for defence, space, and telecom—directly competing with Filtronic in GaN SSPAs and E-band transceivers for satellite and 5G applications.
• Wolfspeed: Wolfspeed is a pure-play GaN-on-SiC RF semiconductor company supplying high-power GaN devices for defence radar, electronic warfare, and telecom—overlapping with Filtronic's GaN SSPA and aerospace/defence positioning.

Emerging players

• Cambridge Communication Systems: CCS is a UK-based mmWave backhaul specialist using 60 GHz and E-band for 5G small cell backhaul. Directly comparable to Filtronic's E-band transceiver and backhaul positioning within the UK mmWave ecosystem, though smaller-scale.
• ThinKom Solutions: ThinKom produces low-profile antenna systems and RF solutions for in-flight connectivity and satellite communications. Adjacent to Filtronic's Ka-Band SSPA and satcom ground station business with a focus on the terminal/antenna side of the value chain.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/filtronic_plc
• YouTubeyoutube.com/channel/UCv6wakJkIq_hyqcu6UtqFoQ
• LinkedInlinkedin.com/company/filtronic

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 records

Subsidiaries1 record

Funding overview

Funding rounds2 records

Investors2 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Filtronic