Title :
Circular polarized active microstrip antenna for commercial GPS application
Author :
Thiagarajah, Sharlene ; Ali, Borhanuddin Mohd ; Habaebi, Mohamed Hadi
Author_Institution :
R&D Div., Telekom Malaysia Bhd., Selangor, Malaysia
Abstract :
A circularly polarized microstrip antenna was investigated for a commercial land-based GPS application mainly due to its polarization potential and attractive physical properties. Both a circular and square patch design were fabricated and analyzed to investigate the design and fabrication sensitivity to geometry. The effect of smaller patch size on performance was also investigated. The inherently low gain characteristic of the patch antenna was improved by integrating an active circuit with the patch. At 1575.42 MHz, a gain of 16 dB and input return loss, S11>-30 dB was obtained with the active patch. Measured performance of several patch designs and GPS satellite acquisition data are presented
Keywords :
Global Positioning System; UHF antennas; active antennas; electromagnetic wave polarisation; microstrip antennas; -30 dB; 1575.42 MHz; 16 dB; GPS satellite acquisition data; active circuit; circular patch design; circular polarized active microstrip antenna; commercial GPS application; design sensitivity; fabrication sensitivity; gain; geometry; input return loss; measured performance; patch size; performance; physical properties; square patch design; Active circuits; Antenna measurements; Fabrication; Gain; Geometry; Global Positioning System; Integrated circuit measurements; Microstrip antennas; Patch antennas; Polarization;
Conference_Titel :
TENCON 2000. Proceedings
Conference_Location :
Kuala Lumpur
Print_ISBN :
0-7803-6355-8
DOI :
10.1109/TENCON.2000.893551
