Stellant Systems, a company that partners with civil, military, and commercial organizations to create technical foundations for a safer, more aware, and connected world, has developed a Linearized Solid-State Power Amplifier (LSSPA) to extend the capability of existing SSPAs. The LSSPA uses Stellant’s adjusted proprietary technology and operates in the K-band from 17.7 to 20.2 GHz.
It is constructed using a thin film amplifier, attenuator, equalizer, linearizer, and control circuits. The amplifier consists of a Gallium Nitride (GaN) output stage and a linearizer/driver assembly, which are integrated into a single package. This LSSPA achieved high power efficiency while providing linear output power using the built-in amplitude and phase pre-distortion generator that provides excellent pre-distortion characteristics of the linearizer.
It utilizes an aluminum laser-sealed hermetic housing type to enclose this amplifier module. This module also contains 2.92 mm RF connectors along with two 15-pin micro-D connectors for use in DC and telemetry interface. The device features output control knobs via the command interface to compensate for gain variation as a function of frequency.
This device is available in two major configurations. It is either available as a standalone device or is integrated with an electronic power conditioner (EPC) on top of a common baseplate. This module includes other functionalities as options such as output isolators to aid in testing/handling operations, gain control, and blanking function.
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