Title :
A 6-12 GHz Push-Pull GaN Amplifier for Low Harmonic Drive Applications
Author :
Roberg, Michael ; Bumjin Kim
Author_Institution :
TriQuint - Infrastruct. & Defense Products Richardson, Richardson, TX, USA
Abstract :
This paper presents a fully integrated 6-12 GHz GaN MMIC push-pull amplifier for low harmonic drive applications. A folded Marchand balun is used to perform the unbalanced-balanced and balanced-unbalanced transformations. The three-stage push-pull amplifier provides in excess of 28 dB of small signal gain at a quiescent bias point of 25V, 200mA. The minimum saturated output power across the 6-12 GHz bandwidth is 32.3 dBm. The worst case second harmonic level under a saturated operating condition is -40 dBc, demonstrating the capability of the push-pull amplifier to suppress the even order harmonics, especially when the second harmonic is within the amplifier bandwidth.
Keywords :
III-V semiconductors; MMIC amplifiers; baluns; differential amplifiers; gallium compounds; wide band gap semiconductors; GaN; GaN MMIC push-pull amplifier; balanced-unbalanced transformations; current 200 mA; even order harmonics; folded Marchand balun; frequency 6 GHz to 12 GHz; low harmonic drive applications; quiescent bias point; second harmonic level; unbalanced-balanced transformations; voltage 25 V; Bandwidth; Gain; Harmonic analysis; Impedance matching; MMICs; Power generation; Power system harmonics;
Conference_Titel :
Compound Semiconductor Integrated Circuit Symposium (CSICs), 2014 IEEE
Conference_Location :
La Jolla, CA
DOI :
10.1109/CSICS.2014.6978530
