Title : 
A New Ultra-Wideband Omnidirectional Antenna [Antenna Designer´s Notebook]
         
        
            Author : 
Heydari, Behrouz ; Afzali, Ali ; Goodarzi, Hossein Rabiee
         
        
            Author_Institution : 
Asian Elite Co., Tehran, Iran
         
        
        
        
        
        
        
            Abstract : 
We introduce a new example of an omnidirectional antenna, with a frequency bandwidth of 4:1 and an acceptable VSWR. The antenna is able to produce all kinds of polarizations by making changes in the structure of the planar inverted-cone antenna and the related ground plane. We have also tried to produce maximum directivity over angles of 0deg to 30deg with respect to the z axis.
         
        
            Keywords : 
antenna radiation patterns; conical antennas; electromagnetic wave polarisation; planar antennas; ultra wideband antennas; PICA; antenna radiation pattern; conical antenna; electromagnetic wave polarisation; frequency 1 GHz to 4 GHz; industrial application; military application; omnidirectional antenna; planar inverted-cone antenna; ultra-wideband antenna; Antenna radiation patterns; Antennas and propagation; Bandwidth; Defense industry; Dipole antennas; Frequency; Polarization; Ultra wideband antennas; Ultra wideband technology; Wire; Conical antennas; omnidirectional antennas; planar inverted cone antennas; ultra-wideband antennas;
         
        
        
            Journal_Title : 
Antennas and Propagation Magazine, IEEE
         
        
        
        
        
            DOI : 
10.1109/MAP.2009.5338696