Open AccessLow profile pattern‐switchable multibeam antenna consisting of four L‐shaped microstrip lines
Author(s) -
Zhang Wei,
Pal Arpan,
Mehta Amit,
MirshekarSyahkal Dariush,
Nakano Hisamatsu
Publication year - 2018
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2017.0954
Subject(s) - microstrip antenna , patch antenna , antenna (radio) , optics , microstrip , coaxial antenna , antenna measurement , ground plane , antenna factor , optoelectronics , physics , materials science , acoustics , electrical engineering , engineering
A multibeam antenna consisting of a set of four L‐shaped microstrip line sections is presented for pattern switchable applications. A planar electromagnetic band gap substrate is implemented to reduce the antenna profile to λ 2.45 /35, where λ 2.45 is the free space wavelength at a design frequency of 2.45 GHz. An impedance matching network is integrated on the lowest layer below a ground plane. The microstrip lines have a resonant frequency of 2.45 GHz and are excited separately. When one of the strips is excited, the antenna generates a tilted beam with a gain of 8.6 dBi. By switching the excitation strip sequentially, a full azimuth beam steering is achieved. When the antenna is located above a large conducting reflector, the antenna maintains its performance. Thus, the antenna is a candidate for moving objects with high speed internet and vehicular tracking.