الفهرس 
Introduction To Wireless CommunicationOnly 14 pages are availabe for public view
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Abstract
This thesis investigates different power amplifiers (PA) architectures that are suitable for millimeter wave (mmWave) communication. mmWave communication utilizes complex modulation techniques that are characterized with variable envelope signals and high peak to average power ratio (PAPR), demanding PA designs to have high efficiency at the average output power not only at the peak output power and also linear PA. Four architectures were investigated and the Doherty PA architecture was selected for the proposed design.
The presented design is a voltage combining fully differential transformer-based Doherty with class-F-1 main and auxiliary amplifiers to improve the efficiency, generate high output power through the waveform shaping via the harmonic content of the current and also reduce the impedance transformation ratio (ITR). Dynamic biasing circuits are also used to the main and the auxiliary amplifier, which adjust the biasing of each PA based on the input power to further boost the efficiency and increase the output 1-dB compression point (OP1dB).
The PA is designed in 45nm CMOS SOI process using 2.2V supply, it is intended to be used for 5G communication applications for the mmWave band convering 26 GHz to 30 GHz. The design achieves a small-signal gain of 10.2 dB at 28 GHz, a saturated output power (Psat) of 25.4 dBm, an output 1-dB compression (OP1dB) of 24.8 dBm, a power added efficiency (PAE) at peak and at 6 dB output power back-off (PBO) of 40% and 27.1%, respectively, with including the bias circuits current.