Pulsed & CW Microwave Tubes - Klystrons, Travelling Wave Tubes (TWT) & Magnetrons.

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	Some examples of detailed microwave tube datasheets are given below (you will be required to enter your email for identification purposes) If you require more information on a product not listed, please contact us. PLEASE NOTE: All datasheets represent general summaries only and may be subject to change without notice. TMD Technologies accepts no responsibility for any reliance placed in these documents. Orders must be negotiated against a full specification.
	PT6014/5 Klystron F band tunable pulsed klystron microwave tube
	PT6019 TWT D band travelling wave tube amplifier
	PT6055 TWT S band travelling wave tube amplifier
	PT6203 Broadband Klystron (BBK) X band klystron amplifier
	PT1120 Broadband Klystron (BBK) S band broadband klystron
	PT6006 Broadband Klystron (BBK) L band tunable pulsed high power klystron
	PT6062 Ring Loop TWT X band travelling wave tube
	PT6715 KU Band TWT High power KU band travelling wave tube

TMD Microwave Technology

TMD has over 60 years microwave technology experience in the design and manufacture of a wide range of pulsed and CW microwave tubes, which have gained a world-wide reputation for high reliability and long life. The extensive product range includes Klystrons, Travelling Wave Tubes (TWTs) and Magnetrons, at frequencies from 1-18 GHz at peak power levels up to 1000 kW (pulsed).

We also operate a comprehensive evaluation and repair service for a wide range of tubes, not necessarily of TMD original manufacture, offering full warranty and enhanced performance.

Centre for cathode excellence

During the 1970s and 1980s, the company was funded by UKMoD, ESA and US DoD to investigate the fundamental chemical and physical properties of impregnated tungsten dispenser cathodes, with the aim of extending the life of microwave tubes. As a result, TMD is the recognised European centre of excellence for cathode and electron gun technology and now TMD tubes are in operation with more than 90,000 hours, and still running. In order to maintain quality, as an integral part of the tube manufacturing process, cathode samples are evaluated for emission and surface purity prior to further tube processing.

Cathode research continues today and we are now working on new materials such as emission enhancing Iridium coatings.

TMD makes the world's only electro-statically focused klystron (ESFK), developed during the 1960s, which is at the heart of the Rapier Short Range Air Defence System (SHORADS). Current developments include new BBK's (broad band klystrons) for airborne radar and very high power tubes for particle accelerators.

Investment in microwave tube design

We have made significant investment in ‘state of the art’ software design tools, including "Vector Fields" microwave modelling software, "SDRC Ideas" 3-D modelling CAD system, "Cosmos" finite element analysis and MAFIA for simulation of design performance. This enables us to consistently design new products with optimised efficiency and high reliability, in a relatively short time.

Klystrons that lead the world

Our klystron technology leads the world in terms of performance and reliability. The company was responsible for much of the important development work on multi-cavity klystrons and resonant coupled cavity output in the 1960s, which enabled increased efficiency and wider bandwidths to be achieved. Markets are wide ranging and include military airborne radar, CW tubes for Satcom and high power linear accelerators for scientific research and medical applications.

Travelling Wave Tubes for high reliability

TMD manufactures three main types of TWT – ring loop, ring bar and coupled cavity. Applications include naval surveillance radar, air traffic control radar and airborne radar. Our TWTs are often combined with our own switched mode power supplies to produce TWTAs used in a variety of markets, both military and commercial, and in particular as part of radar transmitter subsystems.

The coupled cavity TWTs we produce for the Watchman air traffic control radar are providing at least 90,000 hours of uninterrupted service. This reliability is largely a consequence of our expertise in dispenser cathode technology. Latest TWT developments include high power X band ring loop tubes and rugged Ku band ring loop tubes for demanding airborne environments.

Magnetrons for tough environments

TMD manufactures a wide variety of magnetrons with conventional and coaxial structures; fixed frequency or tuneable using dither, spin or shutter tuning mechanisms. The latter, which achieves especially high agility rates, is unique to TMD and was developed during the 1970s and 80s as part of many refinements to magnetron design, including work on improved frequency stability, reduced spectral noise and increased life.

Our magnetrons have proved their worth in many applications, including arduous helicopter environments for search and rescue radar and in fixed wing aircraft for terrain-following radars. An evaluation and repair service is provided for the many mature platforms still requiring microwave technology support.