Two-dimensional reconfigurable Doherty power amplifier

Abstract

The invention discloses a two-dimensional reconfigurable Doherty power amplifier which has the functions of frequency reconfiguration and average power reconfiguration at the same time. Comprising an equal power divider, a main power amplifier frequency reconfigurable input matching network, a main power tube, a main power tube grid power supply end, a main power tube drain power supply end, a main power amplifier output harmonic control network, a main power amplifier output matching network, an auxiliary power amplifier frequency reconfigurable input matching network and an auxiliary power tube, the auxiliary power amplifier comprises an auxiliary power tube grid power supply end, an auxiliary power tube drain power supply end, an auxiliary power amplifier output harmonic control network, an auxiliary power amplifier output matching network, an input phase compensation line, an output phase compensation line and a post-matching network. The frequency reconfigurable technology is introduced, the problem that the bandwidth of a traditional double-frequency / multi-frequency power amplifier is too narrow is solved, the direct current bias voltage of the drain electrode power supply ends of the main power tube and the auxiliary power tube is changed, the reconfigurable average power is achieved, and the requirement for working scenes under multiple frequency bands and different optimal output powers is met.

Description

Technical field [0001] The present invention relates to the field of power amplifier, and more particularly to a two-dimensional reconfigurable DOHERTY power amplifier having frequency reconfigurable and average power reconstructing function. Background technique [0002] With the full coverage of 4G systems, the formal commercial use of 5G, the types and frequencies of channels are increasing, and various types of communication systems will have a coexistence in a long period of time. For communication base stations and intelligent terminals, high-frequency segment mode and high-efficiency communication in concurrent signal mode are more important. In addition, as the application scenario is more complex and diverse, the optimal output power required for signal transmission will also change. The power amplifier is a key component of the front end of the wireless communication transmitter, and the operating performance in multi-band multi-mode will directly determine the multi-ba...

AI Technical Summary

Problems solved by technology

But the traditional Doherty power amplifier can only achieve the best performance in the fixed working frequency band and output power

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