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how to design coaxial probe feed for circular microstrip antenna

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kristal

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hello guys,
im designning circular microstrip antenna for my final year project.can u guys help me how 2 design the coaxial feed for it and how to determine the position to place them on my circular patch.im using cst software. plezz...:smile:
 

Hi Kristal
There're so many papers about this topic and some closed form equation for that. If you'll feed the antenna by 50 ohm coaxial probe there is formula for radial distance between patch center and feeding point
 
Design of Patch Antenna using CST started from 92 page,
Model the Coaxial Feed - from 99 page

Good luck
 
can you give me the link??

---------- Post added at 17:46 ---------- Previous post was at 16:32 ----------

thank u very much. actually i already have that pdf and know how to construct the coaxial probe feed.but the problem is i don't know how to make calculation to determine which position should i put the coaxial probe.how much the distance from patch center to coaxial feed...can u help me??
 

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