Power synthesis distributor applied to communication system of frequency band lower than 25GHz

Abstract

The invention discloses a power synthesis distributor applied to a communication system of a frequency band lower than 25GHz, and mainly solves the problem that the prior art is too narrow in bandwidth and overlarge in insertion loss. The power synthesis distributor comprises two input ports, an output port and a power synthesis and distribution module. The power synthesis and distribution modulecomprises four bidirectional amplification units, six inductors and three absorption resistors. The inductors counteract gain decline caused by stray capacitors in the bidirectional amplification units, and extends the bandwidth; the absorption resistors enable the input and output ports to be well matched under the impedance conversion effect of the inductors and the stray capacitors in the bidirectional amplification units, and meanwhile, the bidirectional amplification units have gains, so that the power synthesis distributor has the relatively low insertion loss. The power synthesis distributor provided by the invention can be applied to power synthesis and distribution of receiving and transmitting front-ends of the multi-input multi-output communication system of the frequency band less than 25GHz.

Description

technical field [0001] The invention belongs to the technical field of physics, and further relates to a power combining distributor for a communication system in a frequency band below 25 GHz in the technical field of integrated circuits. The invention can be used for the power synthesis and distribution of the receiving and transmitting front ends of the multiple-input multiple-output communication system in the frequency band below 25GHz. Background technique [0002] At present, in MIMO systems, power allocation is used to generate the same output signal for each output channel, while power combining can combine multiple received signals into one for signal processing; at the signal transmitting end, in order to To obtain sufficient transmit power, it is also necessary to combine multiple outputs into one for transmitting signals. Traditional power combining and distribution circuits are mostly passive, such as Wilkinson power combining, magic T power combining, etc. Th...

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Problems solved by technology

[0005] The purpose of the present invention is to overcome above-mentioned deficiencies in the prior art, has proposed a kind of power combination divider that is used in the frequency band below 25GHz communication system, it solves the too narrow bandwidth that traditional power combination divider adopts passive structure to cause, insertion loss The problem of too large, at the same time, the power synthesis divider proposed by the present invention has good isolation between the input ports, and the gain can be adjusted without additional circuits

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