High efficiency power amplifier with frequency band selective matching networks

作者：Jeong Junhyung; Kim Phirun; Jeong Yongchae^*

来源：Microwave and Optical Technology Letters, 2015, 57(9): 2031-2034.

DOI：10.1002/mop.29263

• coupled line
• transmission zeros
• wideband impedance transformer

In this article, a high efficiency power amplifier (PA) with frequency selective matching networks (MNs) that can provide passband impedance matching as well as suppression of out-of-band signals simultaneously is proposed. The proposed frequency selective MN consists of a /4 length coupled line, a /2 length open step-impedance resonator stub, and a /6 length bias line terminated with a bypass capacitor. For experimental validation, the PA with input and output frequency selective MNs is designed and fabricated for the US PCS band (1.93-1.99 GHz). The measurement results show that the output power and power add efficiency are 43 dBm and 70.3%, respectively, at the center frequency of 1.96 GHz, and the out-of-band suppression is higher than 32 dB.

• 出版日期2015-9