On-chip active phase shifter based on vector synthesis

Abstract

The invention relates to an active phase shifter, and provides an on-chip active phase shifter based on a vector synthesis technology. The on-chip active phase shifter is used for solving the problems that an active phase shifter is high in power consumption and large in phase error and amplitude error. The on-chip active phase shifter based on the vector synthesis technology comprises a power distribution unit, an orthogonal signal generation unit, two differential signal generation units, a signal synthesis unit and an output balun; a single-ended input signal is input to the input end of the power distribution unit, the power distribution unit divides the input signal into two paths of in-phase signals to be output to the orthogonal signal generation unit which produces a group of orthogonal signals to be input to the two differential signal generation units respectively, each differential signal generation unit produces a group of differential signals to be input to the signal synthesis unit, and the signal synthesis unit synthesizes the two groups of the differential signals into one group of differential signal to be input to the output balun. The active phase shifter is simple in structure, capable of effectively improving signal power gain on the condition that the low circuit power consumption and high phase accuracy are guaranteed and suitable for large-scale application and promotion.

Description

technical field [0001] The invention relates to an active phase shifter, in particular to an on-chip active phase shifter based on vector synthesis technology. Background technique [0002] With the development of society and the advancement of technology, people's demand for high-speed, large-capacity wireless communication is becoming stronger and stronger. However, some current wireless communication technologies are limited by limited bandwidth and channel resources, and it is difficult to meet people's needs. The millimeter wave frequency band has abundant spectrum resources, which can meet the needs of high-speed wireless communication applications. However, the poor performance and high price of millimeter wave front-end products have seriously hindered the promotion and application of millimeter wave communication technology. The unique technical advantages of phased array technology can greatly improve the performance of millimeter-wave communication systems, and th...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an on-chip active phase shifter based on vector synthesis, which is used to solve the problem that the on-chip active phase shifter in the prior art has high power consumption, large phase error and amplitude error, and cannot meet the system requirements

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