I am starting a new project and I need some informations about RFId. I'm working on this technology from 2 years, but I never developed a circuit for it.
I want to develop a simple tag reader (as little as possible): it has to read passive tags ISO 11784 and 11785 at 134.2 kHz, both HDX and FDXB. The antenna hes to be made with ferrite.
I saw several IC readers able to convert the signal from the aerial in SPI (for example) to communicate with the microcontroller. Can you suggest me a good IC?
I have also a question: as I said the tags are passive, and I am not sure if a reader will be enough or I need a transceiver. Is the reader only able to read the tag number or it gives also energy to the tag to transmit it?
Thank you in advance.
Marco