Today'scommunication system has many of advanced features, which gives faster rate of information trans-reception. The trans-receiver has different blocks like Filter, (Voltage controlled oscillator) VCO, (Low noise amplifier) LNA, (Power amplifier) PA. Among these the most power hungry device is the PA. The efficiency of PA theoretically can be 100% but practically it is just 55%. The scope of improvement in the efficiency in the PA will be the interesting and the most challenging task. At the radio frequencies i. e. 1GHz to 80 GHz PA can work more efficient way with the different technologies GaAs, GaN, p-HEMT, and CMOS. The technology scaling with increasing features will give the compactness and system on chip concept. Use of CMOS technology will have ability to shrink in size with low cost and better design results. PA can be designed on CMOS 130nm Technology with the tool (advanced design system) ADS with graphical results.

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Cmos Technology Rf Power Amplifier Ads P-hemt Drain Efficiency Power Added Efficiency.