首页|Architecture and Validation of Wideband Simultaneous Transmit and Receive Phased Array System
Architecture and Validation of Wideband Simultaneous Transmit and Receive Phased Array System
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NETL
NSTL
Applied Computational Electromagnetics Soc
Because signals of different frequenciesexhibit different characteristics after channel coupling,the traditional phased array system only uses phaseshifter or antenna beam control to process frames plusamplitude adjustment control, which has the problem ofoptimizing the parameters of different frequencies to offsetthe mismatch. Based on the principle of broadbandadaptive beamforming, each channel is configured as anadaptive filter with multiple taps to satisfy the preciserelationship between interference suppression and frequency.On this basis, combined with the simultaneousapplication of a multi-element array system, a multitapweight optimization method for interference suppressionis proposed. At the same time, in order to satisfythe application requirements of the existing phased arraysystem architecture with only one set of controllableand adjustable weights, an adaptive beamforming weightoptimization method for phased array system for widebandsignals is analyzed and proposed on the basis ofsimulation analysis and research on the electromagneticcharacteristics of the coupled self-interference channel.Through electromagnetic simulation evaluation and principletest verification, a set of weights corresponding tothe center frequency of the wideband signal can be usedto achieve interference suppression greater than 114 dBin the active transmission domain.
Phased arrayself-interference suppressionsimultaneous transmit and receivewideband signal
Jie Zhang、HongchaoWu、Lianqing Yu
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Nanjing Research Institute of Electronic TechnologyNanjing 210039, China
NETL
NSTL
Applied Computational Electromagnetics Soc
