CW operation of 94GHz Gyro-TWA for telecommunications applications

Lead Research Organisation: University of Strathclyde
Department Name: Physics


This proposal will develop the world's highest power (kW), broadest instantaneous bandwidth, frequency agile amplifiers operating in the mm-wave/terahertz range. The gyro-amplifiers offers a unique opportunity to fill a long standing gap in the generation of high power coherent millimetre and sub millimetre wave radiation with its promise of amplification with an unprecedented 20% instantaneous bandwidth and an unrivalled power of 5kW at 94 GHz. Building on the recent success of "W He et al PRL 2013, 110, art 165101, 2013", the mm/sub-mm wave gyro-TWA will enable a paradigm shift in what is achievable for a ground based, cellular telecommunications network by providing tera-bit data rates. This is possible due to the fact that the wireless gyro-TWA operating at sub-THz frequencies does not need to use opto-electronic components currently limiting data rates of optical schemes.

Another major area of development is the possibility of exploiting the world leading gyro-TWA to be used in Electron Paramagnetic Resonance (EPR) and Dynamic Nuclear Polarisation (DNP) spectroscopy which is currently hampered by the lack of high power sources and especially broadband amplifiers of terahertz radiation.

In addition the gyro-TWA would be an ideal source for cloud profiling radar and the detection of atmospheric pollutants because the atmospheric absorption, penetration and scattering losses, practical stand-off systems require considerable power, typically hundreds of watts. Other applications include high frequency long range security imaging, space situational awareness (detecting space debris), terrain mapping (volcano monitoring), radar and long range, high bandwidth, line of sight communications and real time video-rate detection of hidden explosives and illegal drugs.
Description The acquisition of the DC Genvolt Ltd power supply was possible by successful completion of this research objectives of this project and has opened up opportunities for future exploitation of the world leading high power broadband mm and sub mm-wave amplifiers the only amplifiers capable of broadband (20%) continuous wave, high power (kW) operation for satellite uplink applications
Exploitation Route Currently there are no high power (kw), broadband (10% to 20%) CW amplifiers operating in the 80GHz to 100GHz, 230GHz to 290GHz, 360GHz to 440GHz frequency range. Successful completion of the research objectives of this project enable a follow on Genvolt DC power supply to be acquired. This will enable high power (kw) broad bandwidth (20%) wireless communication where the bandwidth in the hundered of GHz range enables multiples of tens of GBytes per second data rate communication. It also will enable high duty cycle operation of the gryo-TWA an essential requirement for Space Object identification ground based radar
Sectors Aerospace, Defence and Marine,Digital/Communication/Information Technologies (including Software)

Description Yes the acquisition of the DC Genvolt power supply has enhance the capability of the high frequency amplifier for Space Object Identification
First Year Of Impact 2019
Sector Aerospace, Defence and Marine
Impact Types Economic

Description DC power supply to drive W-band gyrotron travelling wave amplifier for satellite uplink and wireless communication applications (://
Amount £141,042 (GBP)
Funding ID ST/T003227/1 
Organisation Science and Technologies Facilities Council (STFC) 
Sector Public
Country United Kingdom
Start 11/2019 
End 03/2020
Description High power, wideband millimetre wave source for space object identification (
Amount £198,000 (GBP)
Funding ID Pi Dr. Colin G. Whyte 
Organisation Defence Science & Technology Laboratory (DSTL) 
Sector Public
Country United Kingdom
Start 09/2019 
End 08/2020
Description Terahertz High-Harmonic Gyrotron Oscillator By Using Metasurface Cylindrical Cavity
Amount £111,000 (GBP)
Funding ID NAF\R1\180121 - Newton Advanced Fellowships 2018 Round 1 
Organisation The Royal Society 
Sector Charity/Non Profit
Country United Kingdom
Start 03/2018 
End 02/2021
Title Data for: "Amplification of Frequency-Swept Signals in a W-Band Gyrotron Travelling Wave Amplifier" 
Description This dataset contains the experimental measurement data published on paper "Amplification of Frequency-Swept Signals in a W-Band Gyrotron Travelling Wave Amplifier", which is partially supported by EPSRC. The data files are recorded by using Keysight VSA software 89600, which can be downloaded from The data files recorded the beam voltage signals as well as the microwave signals when the gyro-TWA was driven by a CW signal and a chirp signal. Data embargo until 01/01/19 due to commercial constraints 
Type Of Material Database/Collection of data 
Year Produced 2018 
Provided To Others? Yes  
Title W-band gyro-TWA 
Description This dataset contain files in OPJ formats which can be opened by data processing software ORIGIN, and WFM file format. It is created by Tektronic oscilloscope and it can be open by WAVESTAR FOR OSCILLOSCOPES. This data is for paper "Broadband Amplification of Low-Terahertz Signals Using Axis-Encircling Electrons in a Helically Corrugated Interaction Region" that been published in Physical review letter. 
Type Of Material Database/Collection of data 
Year Produced 2018 
Provided To Others? Yes  
Description National Vacuum Electronics Conference (NVEC) 2019 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach Local
Primary Audience Postgraduate students
Results and Impact Results from the sheet electron beam pseudospark project was presented at the National Vacuum Electronics Conference 2019 held in the Technology and innovation Centre, University of Strathclyde on the 13th of November 2019
Year(s) Of Engagement Activity 2019
Description Talk at Microwave Technology and Techniques Workshop at the European Space Agency, Noordwijk, The Netherlands 
Form Of Engagement Activity Participation in an activity, workshop or similar
Part Of Official Scheme? No
Geographic Reach International
Primary Audience Professional Practitioners
Results and Impact Present an overview of the performance of the 3.4kW, 91GHz to 96GHz Gyro-TWA to satellite experts to show the unique performance of the gyro-TWA for Space Object Identification radar.
Year(s) Of Engagement Activity 2019