Amplitude phase calibrating device for semi-closed loop coupled phased array channels

Abstract

The invention provides an amplitude phase calibrating device for semi-closed loop coupled phased array channels. Each channel of an active phased array plane is coupled to one waveguide coupler, thereby forming a coupling loop. Two ends of the coupling loop are connected with a signal receiving and transmitting module and a load. When a channel of the active phased array plane transmits an amplitude phase, a transmission system of the active phased array plane transmits a signal, and the signal receiving and transmitting module of the coupling loop receives the signal. When the channel of the active phased array plane receives the amplitude phase, the signal receiving and transmitting module of the coupling loop transmits a signal, and a system of the active phased array plane receives the signal. The transmitted or received amplitude phase information is fed back to a beam control dispatcher of an array phased array radar for amplitude phase calibration. The device not only can be used for the amplitude phase calibration of a phased array before assembly, also can be used for channel detection and amplitude phase calibration after assembly, enables the waveform design of the phased array to be more accurate, and enables the performance of the array phased array radar to be better.

Description

technical field [0001] The invention relates to a calibration technique of phase-controlled array amplitude and phase. Background technique [0002] In order to reduce interference and resist anti-radiation attacks, active phased arrays usually require low sidelobes or ultra-low amplitude lobes. This requires the proper aperture irradiation energy to be arranged on the surface to obtain the desired low sidelobe radiation pattern, so the amplitude and phase of each unit channel are required to be stable, consistent and controllable. In actual situations, due to differences in the performance of original devices, errors in circuit design and manufacturing, the consistency between the amplitude and phase of each channel is poor, so it is necessary to perform amplitude and phase calibration. Usually, the amplitude and phase calibration of the front is to set up the calibration probe on the mouth surface or the middle area of ​​the front. Oral-surface calibration detects the am...

AI Technical Summary

Problems solved by technology

[0005] (3) Regardless of the mouth-to-surface calibration or the mid-field calibration of the array, after the phased array is officially equipped, it is impossible to conveniently carry out channel monitoring and amplitude-phase calibration correction

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