[天线]Single-Feed Slotted Equilateral-Triangular

Abstract—Novel designs of single-feed equilateral-triangular G>{B
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microstrip antennas for circular polarization (CP) are proposed
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and studied experimentally. It is demonstrated that by embedding =Mb!&qq  
a narrow slot or a cross slot of unequal slot lengths in the triangular ~6`HJ  
patch, circularly polarized radiation of microstrip antennas fu3/n@L  
can easily be achieved using a single probe feed. Furthermore, &MnS( 82L  
results show that for the design with a cross slot, the proposed gF;i3OJg  
antenna can perform CP radiation with a reduced antenna size at K &m`1f  
a given frequency (denoted as compact CP operation here); that Ml1sE,B
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is, the required antenna size is smaller for the proposed antenna K!6k<  
for performing CP radiation as compared to a conventional [z$th  
circularly polarized triangular microstrip antenna at a fixed * 8n0  
operating frequency. Details of the proposed CP designs are 53d8AJ_@X  
described, and typical experimental results are presented .. !|{
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