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To simulate you first have to set up the substrate layers as following:
for example using a PET dielectric and silver cond.
FreeSpace//////// er=1 Boundary Open
PET/////////////// er=2.9 Thickness=50um
FreeSpace_0//// er=1 Boundary Open
The draw the antenna. Set two...
You can check these:
Handbook of microstrip antennas by James hall
and
Microwave antenna theory and design by Samuel Silver
Added after 2 minutes:
these are good too:
Radio Antenna Engineering by Edmund A. Laport
and
Antennas and radiowave propagation by Robert E. Colin
Yes, i have set the port 1 as an internal and port 2 as a Ground Reference, and it works. But remember the you have to set the port's impedance to be complex due the RFID chips are different than 50ohms
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the RFID tag antennas are designed for diferent frequency bands like in the US for UHF 902-928MHz or in japan 950-956MHz. So the reader should be configured to cover diferent regions. That it, it depends on the company, in what frequency band they are working with.
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