Title :
Design and development of high-gain wideband circularly polarized patch antenna
Author :
Aswad, Ali K. ; Abdulrazak, Lway Faisal ; Rahman, Tharek Abd
Author_Institution :
Wireless Commun. Center, Univ. Teknol. Malaysia, Skudai
Abstract :
New design of obtaining circular polarization (CP) radiation of a single-feed microstrip antenna is presented. The antenna substrate has an air-layer with thickness about 2.5% of the wavelength at a resonant operating frequency. By using a short probe pin the antenna can be excited easily. The two truncated opposite corners technique is used to obtain the circular polarized operation by selecting an optimal size of truncating. A flat ground plane with an optimal position for the probe pin is used to generate an impedance matching with a wide bandwidth. The CP patch antenna built for IEEE 802.11b/g (2.4 GHz ~ 2.4835 GHz) frequency bands. Measured -10 dB bandwidth is 14.3% and the measured S11, maximum gains and half-power beamwidth are, -41 dB, 8.3 dBi, 75deg respectively. The details of design and experimental results for the proposed design are presented and discussed.
Keywords :
UHF antennas; antenna feeds; broadband antennas; electromagnetic wave polarisation; impedance matching; microstrip antennas; wireless LAN; IEEE 802.11b/g; antenna substrate; circularly polarized radiation; flat ground plane; frequency 2.40 GHz to 2.4835 GHz; high-gain wideband patch antenna; impedance matching; short probe pin; single-feed microstrip antenna; truncated opposite corners technique; truncated square patch antenna; Antenna measurements; Bandwidth; Broadband antennas; Gain measurement; Microstrip antennas; Patch antennas; Polarization; Probes; Resonance; Resonant frequency; Antenna; WLAN; broadband antenna; circularly-polarized antenna;
Conference_Titel :
RF and Microwave Conference, 2008. RFM 2008. IEEE International
Conference_Location :
Kuala Lumpur
Print_ISBN :
978-1-4244-2866-3
Electronic_ISBN :
978-1-4244-2867-0
DOI :
10.1109/RFM.2008.4897368
