[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 T=6fZ;7  
Mehmet Kara Q@B--Omfh  
Weapons Systems Division R[Y]B$XO  
Defence Science and Technology Organization i7g+8zd8d  
P.O. Box 1500, ]B'Ac%Rx  
Salisbury, SA 5108, Australia 4 [2^#t[  
KEY TERMS kigq(a  
Bandwidth, microstrip antenna, patch antennas, printed circuit antennas, 8YNii-pl  
antennas *7.EL`8  
ABSTRACT ;8z40cD  
Several formulas based on the cavity model and the transmission-line Q>qx? g  
model are combined to produce closed-form expressions for calculating ts BPQ 8Ne  
the bandwidth of probe-fed rectanguhr microstrip antenna elements with gd~# uR\  
various thicknesses and various relatiue permittiuities of substrate materials. ^fVLM>p<;  
The formula takes into account the effects of radiation and conductor bvZTB<rA  
and dielectric losses, with their quality factors. The results obtained M{#  
from this technique confirm those calculat .. ~Q7)6%  
ATq)8Rm\  

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