Title :
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
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;
Conference_Titel :
Electronics Packaging Technology Conference (EPTC), 2014 IEEE 16th
Conference_Location :
Singapore
DOI :
10.1109/EPTC.2014.7028251
