[天线]39 A Wide-Band Single-Layer Patch Antenna

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, VOL. 46, NO. 4, APRIL 1998 471 :,jPNuOA  
A Wide-Band Single-Layer Patch Antenna :-(U%`a[  
Naftali Herscovici, Senior Member, IEEE ~KJ,SLzhx9  
Abstract—The typical single-layer patch printed on a dielectric
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substrate is a narrow-band element. This well-known fact is WUzSlZq  
mainly due to the limitations imposed by the dielectric substrate. N`f!D>b:dn  
From efficiency and cost considerations, in most of the cases, (Z5q&#f  
the substrate cannot be too thick. In order to increase the NWw<B3aL  
microstrip element bandwidth, additional resonators in different d8rBu jT  
configurations and combinations can be used: parasitic elements, 15o9CaQw4"  
slots, etc. However, the microstrip antenna element with the ={\![{L  
widest bandwidth (a variation of the aperture-fed stacked-patch GahaZ F  
element) is about 40–50%. This antenna, an aperture-fed stacked s;anP0-O  
patch, has a relatively poor front-to-back ratio, due to the fact " 98/HzR  
that it has a slot in the ground plane. In this paper, a new type zMbfV%b  
of patch element is presented. The patch is suspended over the L7X7Zt8%  
ground plane and supported by a nonconductive pin. It is fed "v@);\-V  
by a three-dimensional (3-D) transition connecting the patch to a $I\))*a  
perpendicular connector. The typical bandwidth of this element fDL3:%D
  
(in terms of VSWR) is 90%. When built .. d
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