Premium
A single‐layer filtering patch antenna array with simple differential feeding network
Author(s) -
Nie Na,
Tu ZhiHong
Publication year - 2021
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32691
Subject(s) - microstrip antenna , patch antenna , microstrip , antenna gain , antenna (radio) , acoustics , bandwidth (computing) , antenna array , electronic engineering , physics , antenna factor , telecommunications , engineering
This paper proposes a single‐layer filtering patch antenna array with simple differential feeding network. It is composed of a simple microstrip‐slot‐microstrip differential feeding network, four patch elements, two open‐ended lines and two U‐slots. Two gain nulls in the lower band and the upper band can be generated by introducing open‐ended microstrip lines and U‐shaped slots, respectively. Therefore, the selectivity of the gain curve is significantly improved. The proposed antenna array has an optimized dimension of 80 × 80 × 0.8 mm 3 and a peak gain of 11.2 dBi. The measured impedance bandwidth (|S dd11 | < −10 dB) is 4.7% ranging from 5.01 GHz to 5.25 GHz. Additionally, the proposed antenna array also achieves common‐mode suppression in the whole band.