Sideband suppression using switched phase distribution in time-modulated array antennas

Nakanishi, Takayuki; Kihira, Kazunari; Takahashi, Tom; Konishi, Yoshihiko; Chiba, Isamu

doi:10.1109/array.2013.6731882

Cited by 6 publications

(1 citation statement)

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“…erefore, the study of TMA must consider the influence of each order harmonic signal. Much research has been done in TMA to form an ideal pattern at the center frequency and suppressing sideband level [5][6][7]. Considering the independence of sidebands of TMA, sideband utilization of TMA has become a hot issue in recent years.…”

Section: Introductionmentioning

confidence: 99%

Research on Multibeam Pattern Synthesis of Time Modulated Array Based on Convex Optimization

Dong

Tan

et al. 2021

International Journal of Antennas and Propagation

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An efficient multibeam pattern synthesis method for time modulated array (TMA) is proposed in this paper. The aim of this method is to generate a beam pattern on the specified sideband of TMA. The pattern synthesis problem is divided into two stages. In the first stage, the sequential convex optimization method is used to suppress the sidelobe of the center frequency and reduce the amplitude dynamic range ratios (DRR). In the second stage, the iterative convex optimization method is used to realize the multibeam pattern synthesis in the sideband. Owing to the introduction of convex optimization, the proposed method could be more efficient than approaches using a global optimization algorithm. The proposed method is capable of realizing pattern synthesis under different DRR constraints and different beam radiation directions. Numerical examples of two beams and four beams patterns of 1000-element time modulated linear array verify the effectiveness of the proposed method.

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Section: Introductionmentioning

confidence: 99%