Calibration method for amplitude and phase variable array antenna
An array antenna and phase technology, which is applied in the field of aerospace measurement and control, can solve problems such as long time consumption and complex data processing process, and achieve the effect of simple operation process and simple solution.
Active Publication Date: 2009-07-15
中国航天科技集团公司第五研究院第五〇四研究所
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Abstract
The invention discloses a calibration method of an array antenna with alterable amplitude and phase. A power response of the array antenna at an auxiliary antenna is obtained by altering the states of an alterable digital phase shifter and an alterable digital attenuator in each channel of the array, an equation is formed by the power response corresponding to a response of a specific channel at multiple different states, a relative amplitude and a relative phase to a reference signal of the channel is obtained by solving the equation, and an phase-amplitude consistency error of each channel of the array is obtained, then the calibration is realized. Aiming at each channel, the calibration method of the invention can obtain the relative amplitude and phase of the channel only through three amplitude states and one phase state, the needed state parameter is small, the algorithm is simple and the operation process is easy.
Application Domain
Electromagentic field characteristicsComplex mathematical operations +1
Technology Topic
PhysicsPhase state +4
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