![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
Abstract
This paper presents the electrical design of a high power ring-bar TWT amplifier at Ku-band. The design parameters of Slow-wave structure (SWS) were synthesized theoretically. Further, the design was optimized using a computer simulation technology (CST). The dispersion and interaction impedance characteristics were simulated using the eigenmode simulation (EMS) technique at a beam voltage of 14.5 kV. The sever and attenuators were incorporated in the designed two-section TWT for obtaining the device gain of more than 30 dB. The particle-in-cell (PIC) simulation was predicted the power of 61.5 dBm (1412 watts), the gain of 34.5 dB, and electronic efficiency of 17.5% at operating center frequency of 15.15 GHz for beam voltage of 14.5 kV and current of 0.55 A. The gain fluctuation value was obtained less than 1 dB for any 80 MHz bandwidth for the interest of frequency band of 14.9 to 15.4 GHz.
Disclosure statement
No potential conflict of interest was reported by the author(s).
Additional information
Notes on contributors
Anurag Srivastava
Dr. Anurag Srivastava received the Ph.D. degree in Physics from Seoul National University (SNU), Seoul, Republic of Korea, in 2011. He has more than 20 years' of experience in the field of design and development of traveling wave tubes especially Microwave to Terahertz wave region. He is currently working as a Scientist in Ministry of Defence, DRDO, MTRDC, Bangalore, India. During his doctorate degree from SNU, he secured Korean government prestigious fellowships: Seoul Science Fellowship for excellent academic performance and outstanding research plan in 2005 and Brain Korea-21 in 2007. He received National Science Day Medal in 2014 and DRDO Technology Group Award in 2017. He is the author of more than 92 publications in the Journal/International/National conferences. He is the Fellow of Vacuum Electronic Devices & Application Society (VEDAS), India.