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Hello everyone,
I want to design and fabricate RFID tag for my master studies. But first of all I need to identify the impedance of the chip that I am going to use later. I need to match the antenna and the chip impedance to get the optimum tag performance. Is anyone here know where can I buy...
Hi flanello.. In the data sheet, the chip impedance at 866MHz is 13-j150 [ohm]. The antenna impedance from my simulation at 866 MHz are 1.32+j157 [ohm] and 1.34+j156.8 [ohm]. Both of the antenna impedances are quite similar to each other. Compared to the chip impedance, the resistance of the...
Hi flanello.. I have tried to simulate the antenna design (UPM Frog 3D).. But I got 2 antenna impedances.. I am bit confused, which antenna impedances should I take in order to calculate the tag reading range .. UPM Frog 3D use Monza 4 tag chip, which have four terminals.. Do you have any idea?
Hi flanello... I don't think it will work because both of the ports should be independent to each other.. huhuhu.. i totally dont have any idea what to do with both of these antenna impedances.. I dont know how to calculate the reading range aith those antenna impedances.. huhuhu
Hi FvM.. yes the purpose of my simulation is to create a circularly polarized antenna, so that I can get an omnidirectoinal radiation pattern.. Can you please explain to me how can I test with the phase shift network? Is there any tools provided in CST Studio suite for this phase shift network...
thanxxx so much flashking for your reply.. here I attach my antenna design.. before this I calculted the average of the antenna impedance for both ports, and then I inserted the values in the reading range equation.. but the result is not the same as in the data sheet.. together with the design...
Hi aleksey0131.. Right now I am struggling with crossed dipole RFID tag antenna.. I dont have any idea how to calculte the reading range.. After I simulate the 2 ports antenna, I got two antenna impedances, which means each antenna have their own impedances.. I dont know whether I should take...
Helloo.. i really need your help.. i have to simulate a crossed dipole RFID tag antenna.. both of the antennas are independent to each other.. So after I simulated the tag antenna, I got 2 antenna input impedances and both of the impedances are quite similar to each other.. In order to calculate...
Hi everyone,
My task for my thesis is to analyze the behaviour of crossed dipole antenna. I have used a design from UPM Frog 3D for simulation using CST STUSIO SUITE. But I don'tknow how to insert 2 discrete ports cross with each other. Anyone has an idea?
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