High Efficiency, Highly Linear, Solid-State Power

Achieving a high power, high linearity, high efficiency, solid state power amplifier across a wide bandwidth is a very difficult design task. These amplifiers are critical in military applications, which typically also involve tough environmental conditions and challenging reliability requirements. Gallium Arsenide (GaAs) has long been the conventional technology for power amplifiers; however, with the advent of Gallium Nitride (GaN) technology, addressing these competing design goals is becoming more feasible, if the power output of such an amplifier can be made linear over a broad range of frequencies. This effort investigates and designs several Push-Pull amplifiers coupled with Linearizers to achieve full coverage over an HF to 6 GHz bandwidth. Application of recent experience in both military power amplifiers as well as linearization techniques will provide a rugged, flexible, and extremely reliable solution. To achieve demanding bandwidth requirements, impedance matching will receive careful attention; and to achieve =this effort will use linearizers that consider both the 2nd and 3rd order distortion terms to achieve the wide bandwidths.