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GaN HPA Monolithic Microwave Integrated Circuit for Ka band Satellite Down link Payload
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 Title & Authors
GaN HPA Monolithic Microwave Integrated Circuit for Ka band Satellite Down link Payload
Ji, Hong-Gu;
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In this paper presents the design and demonstrate 8 W 3-stage HPA(High Power Amplifier) MMIC(Monolithic Microwave Integrated Circuits) for Ka-band down link satellite communications payload system at 19.5 GHz ~ 22 GHz frequency band. The HPA MMIC consist of 3-stage GaN HEMT(Hight Electron Mobility Transistors). The gate periphery of stage, stage and output stage is determined um, um and um, respectively. The fabricated HPA MMIC shows size , small signal gain over 29.6 dB, input matching -8.2 dB, output matching -9.7 dB, output power 39.1 dBm and PAE 25.3 % by using 0.15 um GaN technology at 20 V supply voltage in 19.5~22 GHz frequency band. Therefore, this HPA MMIC is believed to be adaptable Ka-band satellite communication payloads down link system.
 Cited by
Lee sungpal, Jo jinho, Ruy munhee, Choi jangsup, "Chollan Communication Paload Technology Development and Utilization, KIEES, Electromagnetic Engineering and Science 22, pp. 3-16, May, 2011.

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