[天线]Theory and experiment of circularly polarized dielectric resonator antenna with a parasitic patch

[ Abstract—The use of a single parasitic patch for circular ~lB:xVzn  
polarization (CP) excitation of the dielectric resonator antenna 7d"gRM;  
(DRA) is investigated. For demonstration, the technique is applied s u)AIvF
{  
to the conformal-strip fed hemispherical DRA, excited at the ;^Y]nsd  
fundamental TE111 mode. Using the Green’s function approach, SFRQpQ06  
the integral equations for the conformal-strip and parasitic-patch T{Rhn V1  
currents are formulated by matching the appropriate boundary
i%a jL  
conditions. The equations are then solved using the method of I]OVzM  
moments (MoM). In using the MoM, both the rigorous and AB1,G|L  
simplified current expansions are used for the parasitic patch, 0'O*Y ]h+  
and their results are compared with each other. In each case, the !mLD`62.  
impedance integrals are evaluated by virtue of newly obtained
K%/:V  
recurrence formulas and direct analytical integration. Hence, the qH-':|h7  
results can be calculated very efficiently without the need for any >7^i>si  
numerical integration, which greatly facilitates the numerical 8!q$8]M  
implementation. The input impedance, axial ratio, and radiation XP'7+/A  
patterns of the CP DRA are calculated, and the results are in good \"^.>+  
agreement w .. 
r7=r~3)  
La
vm  

未注册仅能浏览部分内容，查看全部内容及附件请先 登录 或 注册