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http://dx.doi.org/10.5515/KJKIEES.2016.27.1.92

UHF-Band 1 kW Solid State Pulsed Power Amplifier for Thermoacoustic Imaging Application  

Lee, Seung-Min (Department of Electronic Computer Engineering, University of Seoul)
Park, Seung-Pyo (Department of Electronic Computer Engineering, University of Seoul)
Choi, Seung-Bum (Department of Electronic Computer Engineering, University of Seoul)
Lee, Moon-Que (Department of Electronic Computer Engineering, University of Seoul)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.27, no.1, 2016 , pp. 92-95 More about this Journal
Abstract
In this paper, an UHF-band 1 kW solid-state pulsed power amplifier was designed and implemented for the thermoacoustic imaging(TAI) at 900 MHz. The designed power amplifier has a pulse width of $80{\mu}s$ and a duty cycle of 1 % for short-pulse operation. The overall amplifier was implemented by combining of 16 single-power amplifiers adopting MRFE6P9220HR3 LDMOSFET using wilkinson power dividers. The solid-state pulsed power amplifier shows 25 % drain efficiency with a gain of 76.2 dB when the output power is 60.2 dBm for a -16 dBm input power at center frequency.
Keywords
Thermoacoustic Imaging(TAI); Solid State Pulsed Power Amplifier(SS-PPA); UHF-Band; Short Pulse;
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