[天线]54 A simple technique for the caculation of the bandwidth of rectangular microstrip antena

A simple technique for the caculation of the bandwidth of rectangular microstrip antena elements with various substrate thicknesses %Fq"4%  
Mehmet Kara tY !fO>Fn~  
Weapons Systems Division f7{E(,  
Defence Science and Technology Organization ZT4._|2
 
P.O. Box 1500, kt%9PGw
 
Salisbury, SA 5108, Australia rZ 9bz}K  
KEY TERMS z %{>d#rw  
Bandwidth, microstrip antenna, patch antennas, printed circuit antennas, Z"'rc.>a  
antennas 6kGIO$xJ)  
ABSTRACT r4dG83qg  
Several formulas based on the cavity model and the transmission-line 5tHv'@  
model are combined to produce closed-form expressions for calculating TYWajcch  
the bandwidth of probe-fed rectanguhr microstrip antenna elements with pSkP8' ?  
various thicknesses and various relatiue permittiuities of substrate materials. rmpJG|(  
The formula takes into account the effects of radiation and conductor "5%G[MB  
and dielectric losses, with their quality factors. The results obtained &>0=v  
from this technique confirm those calculat .. LP_d}ve  
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