Compact Power Amplifier for 5G Communication Systems Created at ETU "LETI"

Scientists from St. Petersburg Electrotechnical University "LETI" have developed a domestic prototype of a compact power amplifier that will allow the creation of energy-efficient devices for advanced 4G and 5G communication technologies. This was reported by the university's press service.

Traditional power amplifiers provide a fixed output power, which does not always meet the requirements of devices operating with complex signals. Such amplifiers can introduce nonlinear distortions and have a low efficiency.

Currently, conventional cellular tower modules use Doherty power amplifiers with two or more transistors to control signals. This allows maintaining high energy efficiency over a wide range of output powers. Scientists at LETI set themselves the task of creating a prototype power amplifier with similar energy efficiency, but in a more compact design.

Specialists used electronically controlled circuits based on ferroelectric materials. Experiments have shown that such circuits provide a compact system for controlling the signal voltage in the amplifier while maintaining similar efficiency of the communication system.

In the future, the development can be used in 5G high-bandwidth communication systems to amplify complex signals. The device can function as a standalone amplifier or in addition to existing architectures to expand the dynamic range.

Earlier, www1.ru reported that Rostec developed a traveling wave tube for the Express-RV satellites.

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