Wide Bandgap Amplifier Linearization

Auriga wideband linear amplifier product AU5502-30

This program has developed a fully-functional high-power amplifier suitable for military insertion. The objective was to provide linear operation in a highly dynamic, multi-tone environment without sacrificing efficiency; the trade-off currently limiting performance of modern military jammers and telecommunication systems.

Historically, methods for linearization have struggled to achieve wide instantaneous bandwidth. Using Gallium Nitride (GaN) and an innovative circuit technique, Auriga has developed a family of amplifiers capable of achieving excellent power, efficiency, and linearity simultaneously across more than 8:1 instantaneous bandwidth (covering UHF, L, and S-bands). The amplifiers perform well under pulsed or CW conditions.

Relevant environment testing was performed at NAVAIR (NSWC-Crane), including multiple-tone input (up to four tones simultaneously) with varying amplitude and spacing, rolling phase with two and four tones, and pulsed testing. Results are available upon request (ITAR restricted).

Auriga wideband linear amplifier product AU5502-20

Optimization Priorities:

• Bandwidth
• Linearity
• Efficiency

Balanced Solution:

Design and deliver a linear amplifier capable of providing excellent power, efficiency, and linearity simultaneously across a very wide instantaneous bandwidth (nearly a decade). A family of products was created to offer a range of size-performance trade-offs. Applications include radar, electronic warfare, and counter electronic warfare (jamming) systems.