Title :
Radiation efficiency of a coplanar-fed ultra-wideband antenna
Author :
Pires, N. ; Mendes, Celso ; Koohestani, Mohsen ; Skriverviky, A.K. ; Moreira, Antonio A.
Author_Institution :
Inst. de Telecomun., Univ. Tec. de Lisboa, Lisbon, Portugal
Abstract :
This paper presents a study on the radiation efficiency of Ultra-Wideband (UWB) antennas. Measurement were made using a cavity-based method with source stirring. A novel post-processing filtering technique of the measured data is introduced. The approach was tested on a coplanar-line-fed UWB monopole. The efficiency of this antenna was also computed with two commercial electromagnetic packages. Simulations and measurement agree to predict a radiation efficiency of over 95% through the 3.1-10.6 GHz operating bandwidth.
Keywords :
antenna feeds; antenna radiation patterns; coplanar waveguides; filtering theory; ultra wideband antennas; waveguide antennas; bandwidth 3.1 GHz to 10.6 GHz; cavity-based method; commercial electromagnetic packages; coplanar-fed ultrawideband antenna; coplanar-line-fed UWB monopole antenna; post-processing filtering technique; radiation efficiency; source stirring; Antenna measurements; Cavity resonators; Frequency measurement; Resonant frequency; Ultra wideband antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4673-0461-0
DOI :
10.1109/APS.2012.6348065
