Title : 
Broadband circularly polarised high efficiency active antenna
         
        
            Author : 
Gao, S. ; Qin, Y. ; Sambell, A.
         
        
            Author_Institution : 
Active Antenna Group, Northumbria Univ., Neweastle Upon Tyne, UK
         
        
        
        
        
            fDate : 
3/2/2006 12:00:00 AM
         
        
        
        
            Abstract : 
A broadband circularly polarised (CP) high efficiency active antenna is presented, where the antenna is integrated directly with a high efficiency class-E power amplifier (PA). The printed antenna is employed not only as a broadband CP radiator but also as a harmonics-termination load network for the class-E PA. Measured results demonstrate broadband CP radiation and high efficiency.
         
        
            Keywords : 
active antennas; broadband antennas; electromagnetic wave polarisation; microstrip antennas; power amplifiers; broadband CP radiator; broadband antenna; circularly polarised antenna; class-E power amplifier; harmonics-termination load network; high efficiency active antenna; printed antenna;
         
        
        
            Journal_Title : 
Electronics Letters
         
        
        
        
        
            DOI : 
10.1049/el:20064020