[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 f6Ah6tb  
Mehmet Kara u6agoK|^9  
Weapons Systems Division b$joY*< 6  
Defence Science and Technology Organization pnOAs&QAm  
P.O. Box 1500, da(<K}  
Salisbury, SA 5108, Australia Q &JUt(  
KEY TERMS T
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Bandwidth, microstrip antenna, patch antennas, printed circuit antennas, i.m^/0!  
antennas 5;EvNu  
ABSTRACT ,O(hMI85]  
Several formulas based on the cavity model and the transmission-line =,M5KDk`  
model are combined to produce closed-form expressions for calculating jLluj   
the bandwidth of probe-fed rectanguhr microstrip antenna elements with R/YqyT\SM  
various thicknesses and various relatiue permittiuities of substrate materials. :F?C)
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The formula takes into account the effects of radiation and conductor Rm( "=(  
and dielectric losses, with their quality factors. The results obtained C'x&Py/#  
from this technique confirm those calculat .. $&td=OK  
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