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 7 publications

(1 citation statement)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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

View full text Add to dashboard Cite

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.

show abstract

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

View full text Add to dashboard Cite

show abstract

Pulse splitting technique for low sidelobe time-modulated antenna array synthesis with harmonic suppression

Sallam,

Attiya

2024

Int. J. Microw. Wireless Technol.

View full text Add to dashboard Cite

In this paper, pulse splitting approach is proposed to simultaneously reduce the sidelobe level (SLL) of fundamental signal and maximum sideband levels (SBLs) of harmonic signals for time-modulated linear array (TMLA). This is achieved by controlling only the periodic switching time sequence of each element of the TMLA. In pulse splitting, the on–off switching sequence of each radiating element is characterized by multiple rectangular sub-pulses within the modulation period which increase the degrees of freedom in order to better synthesize the desired fundamental pattern with simultaneous suppression of harmonic or sideband radiation. A genetic algorithm is employed to optimize the switch-on and switch-off instants of each sub-pulse for each element for 16-element uniform amplitude, phase, and space linear antenna array. The simulation results reveal that the proposed method can achieve the desired patterns with very low SLL and SBLs compared with previous published results.

show abstract

Time-Modulated Arrays: A Review

Varma

Ram

Kumar

2022

IETE Technical Review

View full text Add to dashboard Cite

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

Cited by 7 publications

References 6 publications

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

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

Pulse splitting technique for low sidelobe time-modulated antenna array synthesis with harmonic suppression

Time-Modulated Arrays: A Review

Contact Info

Product

Resources

About