A 24 GHz microstrip grid array antenna excited by coaxial-fed slot

Author

Zihao Chen ; Yue Ping Zhang

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore

fYear

2014

fDate

3-5 Dec. 2014

Firstpage

469

Lastpage

471

Abstract

A microstrip grid array antenna excited by coaxial-fed slot on Rogers 5880 substrate is reported. The antenna has a volume of 70 × 70 × 1.041mm. The coaxial-fed slot is 0.2-mm offset from the middle of the ground plane to obtain symmetrical patterns and a cavity is added below the slot to increase the front-to-back ratio. Simulation results in HFSS indicates that the antenna has a 10-dB impedance bandwidth of 1.12 GHz from 23.76 GHz to 24.88 GHz and a 3 dB gain bandwidth of 1.68 GHz from 23.52 GHz to 25.2 GHz with the maximal peak realized gain of 20.57 dBi at 24.72 GHz. This work demonstrates that compared with capacitive slot, coaxial to slot transition is a more effective method to excite microstrip grid array antenna.

Keywords

microstrip antenna arrays; slot antenna arrays; bandwidth 1.12 GHz; bandwidth 1.68 GHz; bandwidth 23.52 GHz to 25.2 GHz; bandwidth 23.76 GHz to 24.88 GHz; bandwidth 25.2 GHz; capacitive slot; coaxial fed slot; front-to-back ratio; ground plane; microstrip grid array antenna; slot transition; symmetrical patterns; Arrays; Cavity resonators; Microstrip; Microstrip antenna arrays; Microstrip antennas; Slot antennas; 24 GHz; Microstrip grid array antenna; PCB; coaxial line to slot transition;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics Packaging Technology Conference (EPTC), 2014 IEEE 16th

Conference_Location

Singapore

Type

conf

DOI

10.1109/EPTC.2014.7028251

Filename

7028251