A Low Cost 1 Watt Doherty Power Amplifier for WLAN and WiMAX Applications
This paper presents the design and implementation of a low-cost 1Watt Doherty Amplifier with high efficiency for the WLAN and WiMAX applications. Two 1Watt Heterostructure FETs with SOT-89 surface-mount package are adopted as the final stage of the carrier amplifier and the peak amplifier. The proposed Doherty amplifier has the characteristic of both high power added efficiency (PAE) and acceptable linearity. The superior performance is achieved through selecting the best operation point of the peak amplifier. The sweet point of the developed Doherty amplifier is about 3.5 dB back-off from the saturated power. According to the experimental results, the output P1dB power is about 33.5 dBm. When the output power is 30 dBm, the tested PAE is about 31.5％ and the IMD3 is about -34 dBc.
Shilei Jin Jianyi Zhou Lei Zhang Wei Hong
State Key Lab.of Millimeter Waves,School of Information Science and Engineering Southeast University,Nanjing 210096,China
国际会议
Progress in Electromagnetics Research Symposium 2009(2009年电磁学研究新进展学术研讨会)(PIERS 2009)
北京
英文
555-558
2009-03-23（万方平台首次上网日期，不代表论文的发表时间）