X-Band Robust Current-Shared GaN Low Noise Amplifier for Receiver Applications

Abstract

This paper presents the design and the measured results of a GaN-based low noise amplifier MMIC designed to operate at X-band frequencies. The design successfully demonstrated current-shared topology to minimize DC current consumption while providing greater than 25dB of small signal gain and less than 2.5dB of noise figure. The LNA has shown to be robust to at least 5W of CW input power with saturated output power of less than 17dBm. The design technique and the results presented here can be leveraged in designing GaN- based receiver front ends.