Bandwidth phase equalization method suitable for array transponder

Abstract

The invention discloses a bandwidth phase equalization method suitable for an array transponder. The phase unbalance in a full-bandwidth of a multi-channel active single-machine in a multi-channel system link or system of the array transponder is equalized through the dispersion characteristic of a transmission line, thereby achieving a control aim of phase consistency in the full-work bandwidth of the array transponder. The method disclosed by the invention is mainly used for effective load of a static orbit mobile communication satellite using the array transponder. Through the method provided by the invention, the requirement on phase consistency in the multi-channel full-work bandwidth by the array transponder can be realized, the power integration capacity, the beam forming precisionand like main performance indexes related to the phase consistency of the array transponder are improved, and the performance of the array transponder is promoted.

Description

technical field [0001] The invention relates to the payload technology of a geostationary orbit mobile communication satellite, in particular to a broadband phase equalization method suitable for an array transponder. Background technique [0002] The array transponder is the core technology of the geostationary orbit mobile communication satellite, and usually includes dozens or even hundreds of receiving and transmitting channels. In order to achieve dynamic power allocation in the transmission channel, the Butler matrix + fixed amplifier is generally used to form a dynamic power allocation. The amplitude and phase consistency of dozens of solid-state amplifiers will affect the output power and synthesis efficiency, thereby affecting the beamforming; the receiving channel usually uses dozens of channels Even hundreds of low-noise amplifiers receive user signals at the same time. The amplitude-phase consistency of the low-noise amplifier will affect the beam formation. Ther...

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Problems solved by technology

[0003] Due to differences in active components and stand-alone assembly of fixed amplifiers and low-noise amplifiers, the phase imbalance of each product will inevitably result. , Single-machine production control and single-machine debugging, through these control points, the amplitude and phase of the single-machine are as consistent as possible, but these control methods are also difficult to implement, and the phase consistency control accuracy achieved is limited. The phase consistency effect of the security system is often not necessarily very good, so it is necessary to make a fuss about the phase consistency control work in the integration stage of the array transponder system

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