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http://dx.doi.org/10.5515/KJKIEES.2019.30.4.307

Design and Fabrication of a High-Power Pulsed TWTA for Millimeter-Wave(Ka-Band) Multi-Mode Seeker  

Song, Sung-Chan (Hanwha Systems)
Kim, Sun-Ki (Victek)
Lee, Sung-Wook (Victek)
Min, Seong-Ki (Victek)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.30, no.4, 2019 , pp. 307-313 More about this Journal
Abstract
The traveling wave tube amplifier (TWTA), which can be applied to the Ka-band millimeter-wave multi-mode seeker, consists of an high voltage power supply(HVPS), a grid modulator, a command and control, and an RF assembly. We designed a power supply that generates a -17.9 kV high voltage by synchronizing the pulse repetition frequency(PRF) and power supply switching frequency(i.e. synchronization frequency), and a high-speed grid-switching modulator for RF pulse modulation. The TWTA, which is fabricated through miniaturization with a volume of 3.18 L, has high pulse switching characteristics of up to 18.5 ns. The maximum rise/fall time of the grid on/bias signal and peak power is more than 564.9 W. Moreover, an excellent spurious performance of -68.4 dBc or less was confirmed within the range of PRF and PRF/2.
Keywords
Ka-Band; Millimeter-Wave; Seeker; TWT; TWTA; HVPS;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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