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Richard Patrick – Head of Business Development

Richard Patrick – Head of Business Development. The 12th International Workshop on Breakdown Science and High-Gradient Technology, HG2019 - June 2019. Who are TMD Technologies and what do we do?.

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Richard Patrick – Head of Business Development

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  1. Richard Patrick – Head of Business Development The 12th International Workshop on Breakdown Science and High-Gradient Technology, HG2019 - June 2019

  2. Who are TMD Technologies and what do we do? World class manufacturer of microwave tubes, high voltage power supplies, and transmitters for Radar, EW, Communications, EMC/Instrumentation and scientific applications. EMI Electronics TMD Technologies LLC Microwave Tube Research Division Varian (CPI) JV Thorn EMI Electronics TMD Technologies 2013 1940s 1969 1989 1995 • 2004 & 2005 – Queens Awards for Innovation & Export Achievement

  3. TMD Today • 10 minutes from London Heathrow • Independent - management owned • USA Support Facility in Baltimore (2013) • TMD is an SME, employing 180 people • Sales revenue in 2017/2018 £23.4M • Investment in new product development, 10% of revenue for the last 15 years

  4. Science – Product Areas • Electron Gun and Structure Manufacturing • High Power Amplifiers

  5. Science – Guns and Structures • Electron Gun Manufacturing • TMD Design and manufacture its own electron guns including cathodes • Highest voltage gridded gun 150 kV / 8-10 A • Volume manufacturing capability

  6. Science – Guns and Structures • Structure Assembly • TMD build a wide range of microwave tubes – L Band to Ku Band • Have vacuum bonding, hydrogen brazing and other joining capabilities • First assembled CLIC 30 GHz structure in ~1994 • Currently qualifying facility for 12 GHz structure build

  7. Science – Drive Amplifiers • Power Amplifiers • Mostly derived from our military products • Solid State and TWT based amplifiers 300 W C Band SSA 40 kW S Band TWTA

  8. Low Phase Noise What is this & what does it mean?For Radar Transmitters the ‘Phase Noise’ comprises two components, one is the disturbance of the phase of the amplified signal during the amplification process, this is the height of the ‘floor’ in the graph. The other component is time repetitive changes of the voltages applied to the TWT electrodes, which also disturb the phase resulting in ‘lines’ or spurious. Transmitted signal level (0 dBc) 1st PRF Line Spurious Lines (dBc) Random Noise Floor (dBc/Hz) These levels have a direct effect on the performance of the radar, particularly its ability to distinguish small targets from the background

  9. Low Phase Noise

  10. Reliability • TMD fielded equipment has outstanding reliability • Feedback from original customer suggests older equipment achieving over 3,500 hours MTBF on Rotary Wing Platforms. • Newer Equipment now achieving over 7,000 hours MTBF also on Rotary Wing Platforms (X Band) and over 8,000 hours for ground based (S Band) • TMD routinely monitor all returns and test failures to find weaknesses and look for opportunities to further improve the product. Equipment History

  11. Ultra Available Amplifiers Development, Testing, Delivery

  12. Solid-State RF State-of-the-art • Cascading architecture with >100 inputs • Lose ~ 0.5% efficiency @ each cascade • Impedance between cascades tuned “by hand” • Broken modules drop efficiency significantly RF module Power combiner • Standard 300-600 W RF boards with one transistor – copies from evaluation boards • Tuned by hand matching circuits • Circulators (lose 5% to 7% efficiency) • Bulky system • Hardly scalable • Complete redesign for new frequency • Wall plug efficiency ≈ tubes • Complex maintenance • High cost DELTA-SIGMA INC. DRWPtransmitter 250 kW at 49.25 MHz

  13. Unified system architecture • Customers demand lower TCO* • High efficiency (>55%) • Low MTTR (< 5 min), high MTBF (>100.000 h) • Compact (Average RF power >25 kW/m2) • Cost effective • Turnkey • System approach • Unified architecture for various applications, frequencies, powers (up to 1.3 GHz, 3 MW) • High modularity and scalability • Reduced costs and development efforts • Use off-the-shelf components as much as possible • No handmade parts/tuning • All components fit into standard 19“ cabinet • Custom designed components • RF power modules • Power combiner • Control system • Standard components • DC power supply • 19” cabinet • Auxiliaries, e.g. industrial computer, cooling Control System DC power supply Power combiner RF modules • Water Distribution • Dir.Coupler Final Power Combiner 19” cabinet *TCO = Total Cost of Ownership

  14. 250kW 202.5 MHz 800μs pulsed RFA for ISIS (Rutherford Appleton Lab, STFC, GB) 202.5 MHz, 250 kW 800 μs pulse 50 Hz repetition rate 4% duty cycle

  15. RF Modules RF Module drawing RF Module assembly with 4x 1.1 kW PA units 6x RF Modules dock-station (front and back view) • Design advantage • Module can be changed by simple slide in using plugin connectors

  16. 202 MHz PAM Gain and Efficiency • Efficiency 68,4 % at 4100W output power • Efficiency 69,3 % at 4300W output power (capability of system maintained max output power with 4 PAMs non- operating) • Recalculated value of output power of system corresponds to 96 % efficiency of RF combiner system

  17. 202 MHz PAM Rise and Fall shape • Rise time about 110 ns • Fall time about 200 ns

  18. RFA202-250P Power Combining System • 16:1 RF Combiner • 4U high • with RF switches • 4:1 Power Combiner • 16:1 Power Combiner • Bi-directional coupler • 4:1 RF Combiner • Up to 4 off PAMs possible

  19. RFA202-250P RF power and gain RF amplifier gain is better than 75 dB for 10-250 kW output RF power range RF amplifier DC efficiency at 250 kW output RF power is 58% Numbers over 250 kW are extrapolation based on individual PAM performance. They represent the redundancy of the system

  20. RFA202-250P Bandwidth and Harmonics • -3dB bandwidth is 10MHz • No harmonics • due to power combiner bandwidth

  21. RFA202-250P Conclusion • Amplifier successfully installed and commissioned at Rutherford Appleton Laboratory, STFC, UK • Output power up to 260 kW (800 μs pulse, 4% duty cycle) • Efficiency of 58% at 250 kW of RF power • No Harmonics • -3dB bandwidth is ±5.5 MHz • Pulse drop during 800 ms pulse is about 5% • Operation without circulators RFA forward ISIS tank field RFA reflected Triode reflected

  22. 352 MHz Amplifier for ESS Spokes 352.21 MHz, 400 kW 3.5 ms pulse 14 Hz repetition rate 5% d.c. Withstands full reflection at any phase 4 x Capacitors Modules 4 x Capacitors Modules Directional Coupler 4 x Capacitors Modules 4 x Capacitors Modules 4:1 Combiner 6 x RF Modules 6 x RF Modules 6 x RF Modules 6 x RF Modules Power Distribution Module 12:1 Combiner 12:1 Combiner 12:1 Combiner 12:1 Combiner 6 x RF Modules 6 x RF Modules 6 x RF Modules 6 x RF Modules Control System 4 x Capacitors Modules 4 x Capacitors Modules 4 x Capacitors Modules 4 x Capacitors Modules Water Cooling Module 50 V DC Power Supply 50 V DC Power Supply Modules arrangement in cabinets 352 MHz system external view

  23. Configuration #1 • CW Version • Frequency 185.7 MHz • Output power 120 kW CW • Plug efficiency of >50% at 120 kW

  24. Configuration #2 • CW Version • Frequency 500 MHz • Output power 80 kW CW • Plug efficiency of >50% at 100 kW

  25. Configuration #3 • Pulsed Version • Frequency 162 MHz • Output power 550 kW • 16:1 RF Combiner • 4U high • with RF switches • Main Control Rack • 1U high • control and monitoring • low level RF • HMI • Power Supply Unit • TDK-Lambda • 1x PS 2.5 kW module • LAN controller • PA Rack • 6U high • 8x PA Modules • RF Splitter (α and φ tuning) • 128x 4.5kW PA modules • PAM’s redundancy: +0.3kW (full power with 8 broken PAMs) • 135kW per rack • Up to 585 kW in normal operation • 8:1 RF Combiner • with directional coupler attached 2100 (42U)

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