High Power Laser and Particle Beams, Volume. 32, Issue 7, 073001(2020)
Overview of development of microwave power amplifiers
Figures & Tables(12)
Fig. 5. 4～8 GHz 50 W MPM of Beijing Vacuum Electronics Research Institute
Fig. 8. Ultra-thin EPC components of Information Engineering University
Fig. 9. Saturated output power
Table 1. Typical millimeter wave products
View tableView in ArticleTable 1. Typical millimeter wave products
serial frequency/GHz power/W duty cycle/% efficiency/% manufacturer main application 1 231～235 5～25 50 11 L3 radar（SAR） 2 90.6～91.4 300 50 − L3 seeker，radar 93～95 50 CW 15 CPI radar communication W band（bandwidth 5 GHz） 150 20 20 CETC12 radar communication W band（bandwidth 0.5 GHz） 200 10 − THALES seeker，radar 3 81～86 200 CW 50 L3 communication 4 47～52.4 125 CW 35 L3 communication 47～52.4 120 CW 30 CETC12 communication 43.5～45.5 200 CW 46 L3 communication 5 34～36 1000 50 40 L3 seeker，radar 32～37 700 50 40 CETC12 radar 27.5～31 500 CW 57 L3/NEC/CPI communication 27.5～31 300 CW 45 CETC12 communication
Table 2. THz TWT test results
View tableView in ArticleTable 2. THz TWT test results
frequency/THz cathode voltage/kV beam current/mA saturated gain/dB peak power/mW 3 dB bandwidth/GHz duty cycle/% 0.64 9.7 4.8 22 259 15 10 0.67 9.6 3.1 17 71 15 0.5 0.85 11.4 2.8 22 39 15 11 1.03 12.1 2.3 20 29 5 0.3
Table 3. Main characteristic parameters of several semiconductor materials
View tableView in ArticleTable 3. Main characteristic parameters of several semiconductor materials
material band gap width/eV electron mobility/ （cm2·V−1·s−1） saturated electron velocity/ （107 cm·s−1） breakdown field strength/ （MV·cm·−1） thermal conductivity/ （W·cm−1·K−1） relative permittivity Baliga value （high frequency） Baliga value （low frequency） Si 1.12 1 400 1 0.3 1.5 11.4 1 1 GaAs 1.42 8 500 2 0.4 0.5 13.1 11 16 4H-SiC 3.25 1 020 2 3 4.9 9.7 73 600 GaN 3.45 1 000（GaN） 2 000（AlGaN/GaN） 2.7 3.3 2 8.9 180 1 450
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Jianbing Li, Pengfei Lin, Baoliang Hao, Jianbang Sun. Overview of development of microwave power amplifiers[J]. High Power Laser and Particle Beams, 2020, 32(7): 073001
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Received: Apr. 26, 2020
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Published Online: Jul. 10, 2020
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