IETE Technical Review ( IF 2.4 ) Pub Date : 2022-04-11 , DOI: 10.1080/02564602.2022.2055669 D. Suneel Varma 1 , Gopi Ram 1 , G. Arun Kumar 1
In the modern communication era, antenna arrays play a vital role, demanding more constrained antenna arrays with high gain, ultra-low sidelobes, and other characteristics. The introduction of the fourth dimension, time in antenna arrays, reduces the effort needed for synthesis and offers flexibility in designing high-performance antenna arrays. The fourth-dimensional antenna with time as the fourth dimension is also known as Time-Modulated Antenna Array (TMAA). The modulation of the antenna array by periodic time sequence generates harmonic radiation patterns. This paper represents a review of TMAA from its evolution to the current progress. The virtue of time modulation provides multi-beam radiation from TMAA, which finds its application in numerous fields like secure communication, tracking of elements, and simultaneous scanning in azimuthal and elevation planes. The exploitation of TMAA in the fields requires synthesis of the radiation pattern, making it suitable for the application by reducing the sidelobe and sideband levels, radiating sum-difference patterns, multi-tone radiation, Wireless Power Transfer, antenna failure correction, and many more. Furthermore, TMAA with an optimized timing sequence may find a place in future generations’ communication.
中文翻译:
时间调制阵列:回顾
在现代通信时代,天线阵发挥着至关重要的作用,需要更多具有高增益、超低旁瓣等特性的受限天线阵。引入第四维,即天线阵列中的时间,减少了合成所需的工作量,并为设计高性能天线阵列提供了灵活性。以时间为第四维的第四维天线也称为时间调制天线阵列(TMAA)。通过周期性时间序列对天线阵列进行调制会产生谐波辐射模式。本文代表了对 TMAA 从其演变到当前进展的回顾。时间调制的优点提供了 TMAA 的多光束辐射,它在许多领域得到应用,如安全通信、元素跟踪、并同时扫描方位角和仰角平面。TMAA 在该领域的开发需要合成辐射方向图,使其适合通过降低旁瓣和边带电平、辐射和差方向图、多音辐射、无线电力传输、天线故障校正等应用. 此外,具有优化时序的 TMAA 可能会在后代通信中找到一席之地。