Title :
An UWB microstrip feeding quasi circular antenna
Author :
Garduño-Nolasco, Edson ; Sosa-Pedroza, Jorge ; Jardón-Aguilar, Hildeberto
Author_Institution :
SEPI - IPN, Mexico City, Mexico
Abstract :
We present the analysis of a quasi circular planar antenna for UWB applications. Analysis includes comparison of coplanar and microstrip feeding. Evolution from the circular antenna requires modifications in the structure and ground plane to soften the edges obtaining improvements in the antenna parameters agreeing with the theory proposed by John Kraus. Evolution is performed for a circular antenna with a design frequency of 4.5 GHz with a bandwidth of approximately 20 GHz. The antenna feeding impedance is proposed as 50 ohms, built over a substrate of RF35-A 0.762 mm × 35 mm × 50 mm. The improvements obtained are reflected in the number of resonances of the antenna throughout the operating bandwidth.
Keywords :
UHF antennas; antenna feeds; antenna theory; microstrip antennas; planar antennas; John Kraus theory; RF35-A; UWB microstrip feeding quasicircular antenna; antenna feeding impedance; coplanar feeding; frequency 4.5 GHz; ground plane; quasicircular planar antenna; size 0.762 mm; size 35 mm; size 50 mm; Antenna radiation patterns; Bandwidth; Microstrip; Microstrip antennas; Resonant frequency; Smoothing methods;
Conference_Titel :
Electrical Engineering Computing Science and Automatic Control (CCE), 2010 7th International Conference on
Conference_Location :
Tuxtla Gutierrez
Print_ISBN :
978-1-4244-7312-0
DOI :
10.1109/ICEEE.2010.5608671
