Title :
A CPW-Fed Broadband Circularly Polarized Regular-Hexagonal Slot Antenna With L-Shape Monopole
Author :
Zhou, Shui-Wei ; Li, Ping-Hui ; Wang, Yang ; Feng, Wei-Hua ; Liu, Zong-Quan
Author_Institution :
Inst. of Commun. Eng., PLA Univ. of Sci. & Technol., Nanjing, China
fDate :
7/3/1905 12:00:00 AM
Abstract :
A regular-hexagonal structure of wide-slot antenna for broadband circular polarization (CP) based on coplanar waveguide (CPW) feed is presented. By protruding into the slot an L-shape monopole patch, and featuring two inverted-L grounded strips around two opposite sides of the slot, wide impedance bandwidth and wide axial-ratio (AR) bandwidth can be obtained simultaneously. By notching a rectangle in the ground conductor near the feed line, the antenna performance is further improved. The proposed antenna can provide an impedance bandwidth (S11 <; -10 dB) of 86% and a 3-dB AR bandwidth of 50%, respectively.
Keywords :
antenna feeds; broadband antennas; coplanar waveguides; microstrip antennas; monopole antennas; slot antennas; CPW-fed antenna; L-shape monopole patch; broadband antenna; broadband circular polarization; circularly polarized antenna; coplanar waveguide; feed line; ground conductor; inverted-L grounded strips; regular-hexagonal structure; wide-slot antenna; Antenna measurements; Bandwidth; Broadband antennas; Frequency measurement; Microstrip antennas; Slot antennas; Broadband antennas; circular polarization (CP); coplanar waveguides (CPWs); slot antennas;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2011.2172570
