Open AccessUltra‐wideband linearly polarised planar bowtie array antenna with feeding network using dielectric‐based inverted microstrip gap waveguide
Author(s) -
Zhang Tianling,
Chen Lei,
Moghaddam Sadegh Mansouri,
Zaman Ashraf Uz,
Yang Jian
Publication year - 2020
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.2019.0810
Subject(s) - wideband , microstrip antenna , planar , bandwidth (computing) , optics , planar array , antenna array , microstrip , materials science , patch antenna , optoelectronics , antenna (radio) , physics , telecommunications , computer science , computer graphics (images)
A tightly coupled bowtie array antenna at a millimetre‐wave band is presented in the study. The antenna has a simple structure and exhibits a high performance over an ultra‐wide bandwidth. The feeding network is designed by using the dielectric‐based inverted microstrip gap waveguide technology in order to have a compact layout. An 8 × 8 planar array is designed and prototyped. The measured results show that the proposed array has achieved an overall bandwidth of 55.7% from 18.7 to 33.15 GHz. The maximum measured gain is 21.8 dBi at 32.5 GHz, and the total antenna efficiency is above 40% through the whole bandwidth.