An Adaptive, Linear, High Gain X-Band Gallium Nitride High Power Amplifier

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Najhart, Srdjan




The work in this thesis presents the design and implementation of an MMIC reconfigurable power amplifier operating in the X-band for the purpose of creating a smart antenna system capable of adapting to performance compromising situations arising from changes in impedance due to thermal expansion and electromagnetic coupling to nearby dielectric objects. A two-stage power amplifier and three-bit reconfigurable output matching network topology is implemented in a coplanar waveguide design within a 4 mm x 2 mm area using a 500 nm AlGaN/GaN process. Simulations show an output power of 34 dBm with PAE of 33 % and gain of 23 dB at the 1 dB compression point, and a saturated output power of 36 dBm and peak PAE of 36 %, which is accomplished using an 800 um wide HEMT device. Eight discreet output impedance steps allow a tuning range corresponding to a VSWR ratio of 2.1.


Engineering - Electronics and Electrical




Carleton University

Thesis Degree Name: 

Master of Applied Science: 

Thesis Degree Level: 


Thesis Degree Discipline: 

Engineering, Electrical and Computer

Parent Collection: 

Theses and Dissertations

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