@inproceedings{5aaaabe7c91f497ea3bf6ddb35eba89c,
title = "A Method of Side-lobe Suppression for Reactance Modulated Antennas",
abstract = "This paper reveals the mechanism of the high side-lobe level (SLL) phenomenon in reactance modulated antennas (RMAs) and proposes a method to suppress the side-lobe for RMAs. The wave-guiding mode in RMAs is a surface wave with considerable EM field exposed to the free-space. We found that it is the exposure of EM power results in the slow-wave radiation phenomenon deteriorating the SLL, which is always neglected in conventional waveguides with local EM confined structures, such as rectangular waveguides and microstrip lines. To eliminate the slow-wave radiation, a 'complementary decoupling' method is proposed in this paper by introducing another RMA with inverse periodic variation to the original one. The two parallel antennas are excited with equal amplitude and reversed phase forming a complementary radiation pair. With the proposed method, the slow-wave radiation is eliminated and the SLL is improved. Meanwhile, all of the even radiation modes are also suppressed. Especially for the -2nd mode, which also carries considerable power and often appears in most RMAs.",
keywords = "Beam steering, Holographic, Leaky wave antenna (LWA), Side-lobe level (SLL) suppression, Sinusoidal modulation, Surface impedance, Surface wave, metamaterial antenna.",
author = "Wang, \{Peng Yuan\} and Meng, \{Fan Yi\} and Lyu, \{Yue Long\} and Andreas Rennings and Daniel Erni",
note = "Publisher Copyright: {\textcopyright} 2020 EurAAP.; 14th European Conference on Antennas and Propagation, EuCAP 2020 ; Conference date: 15-03-2020 Through 20-03-2020",
year = "2020",
month = mar,
doi = "10.23919/EuCAP48036.2020.9136067",
language = "英语",
series = "14th European Conference on Antennas and Propagation, EuCAP 2020",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "14th European Conference on Antennas and Propagation, EuCAP 2020",
address = "美国",
}