S. Nakamura, R. Pokharel, K. Yoshida, H. Kanaya, D. Kanemoto
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引用次数: 3
摘要
本文介绍了5GHz无线局域网发射机功率放大器的设计。为了实现高功率附加效率(PAE)，采用负载-拉法计算阻抗匹配电路。在这种情况下，放大器的输出阻抗不等于50欧姆。设计了匹配最大PAE阻抗的5 GHz a类PA。该放大器的增益为9.82 dB, PAE为20.2%，比50欧姆阻抗匹配的放大器高1.8个点。该放大器采用0.18 um CMOS工艺制作，并测量了其射频特性。
High efficient impedance matching circuit of power amplifier combined with antenna
This paper describes the design of the power amplifier (PA) for 5GHz WLAN transmitter. In order to realize the high power added efficiency (PAE), impedance matching circuit is calculated by using the load-pull method. In this case, output impedance of the PA is different from 50 ohm. Our proposed 5 GHz class-A PA matched to the impedance of maximum PAE is designed. This PA has 9.82 dB of gain and 20.2 % of PAE which is 1.8 point larger than that of 50 ohm impedance matched PA. This PA is fabricated on the 0.18 um CMOS technology and measured the RF properties.
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