Patented 2.8 Kw S-Band GaN Solid-State Pulsed High-Power Amplifier

Thermal management has always been a major challenge in transistor based pulsed amplifiers. As heat builds up the noise rises and gain decreases diminishing efficient performance. This problem has been exacerbated due to the availability of higher output devices. 

Significant problems with pulsed amplifier designs have included:

1. Waste heat dissipation and its detrimental distortion decreasing overall system efficiency (input power vs output power).

2. Excessive weight and large overall size. Higher power densities generate excessive heat that have required heavy, bulky external thermal transfer methods such as heat sinks, fans, or cooling liquids. Size and weight issues limit applications such as airborne.

3. Requirement of a large high-current DC power supply

4. Loss of amplifier gain and increase in signal noise and distortion as component temperatures rise, possibly resulting in a forced shut down making it unreliable in critical situations.

WDS Radar pulsed amplifier methodologies have eliminated waste heat and improved efficiency by using patented proprietary DC high-speed switching techniques. The result of this high-speed switching significantly reduces energy consumption, eliminates waste heat and its detrimental distortion, and significantly improves power efficiency. The size of the DC power supply can be greatly reduced by a factor of four. These methodologies solve the challenges of thermal management. The elimination of waste heat also eliminates the need for bulky, heavy heat sinks, fans, or cooling liquids. This allows for a crucial and significant reduction in the overall weight and size of the amplifier.

System Protection
Low/High Voltage Shutdown
Over Temperature
Duty Cycle Limit
VSWR Limit

Communication For Status Forward/Faults Forward/Shutdown
On-Board Web Interface via Ethernet
RJ-45 Connector

Options
Higher Pulse Width/Duty Cycle
Primary Power
Multi-Combined Units
Circular Military Power Connector
Military Specifications

Pulse Performance

50 µs @ 1 KHz

Temperature Performance Over Time

Note: Tested on lab bench independent of attachments.

All values listed are typical and are subject to change. Data should be used for general reference only. Other operational parameters are available upon request from WDS Radar.