Title :
Analysis and Design of a Compact Dual-Band Directional Antenna
Author :
Quan, XuLin ; Li, RongLin ; Cui, YueHui ; Tentzeris, Manos M.
Author_Institution :
Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou, China
fDate :
7/4/1905 12:00:00 AM
Abstract :
A new type of compact dual-band directional antenna is proposed for 2.4/5-GHz wireless access point and RFID reader applications. The dual-band antenna consists of a longer dipole for the lower band and a pair of shorter dipoles for the upper band. A simple coupling microstrip line is employed to excite the dipoles. Both the dual-band antenna and the feeding microstrip line are printed on the same substrate, leading to a fully planar structure. The length of the dipole for the lower band is shortened by a capacitive loading at each end of the dipole, offering a compact antenna configuration. The compact dual-band antenna achieves a desirable directional radiation pattern with an antenna gain of near 8 dBi for the lower band and 9-10 dBi for the upper band. An equivalent circuit analysis for the design of the dual-band directional antenna is presented.
Keywords :
dipole antennas; directive antennas; equivalent circuits; microstrip lines; radio access networks; radiofrequency identification; RFID reader applications; compact antenna configuration; compact dual-band directional antenna; design; dipole antenna; equivalent circuit analysis; microstrip line; wireless access point; Antenna radiation patterns; Dipole antennas; Directional antennas; Dual band; Microstrip; Microstrip antennas; Directional antenna; RFID readers; dual-band antenna; wireless access points; wireless local area network (WLAN);
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2012.2199458
