Dual-Band RF IC Card Reader Design Based On The ARM9 Architecture

With the development of modern underground railway, more and more Dual-band RF IC card readers have been equipped onto the AFC systems. Based on the RF technology, Dual-band RF IC card reader has found market places by providing advantages such as time-saving, integration, high performance towards EMC and security. Here Dual-band stands for working under the framework of ISO 14443, and support IC cards working at frequency of 13.56MHz and RF-SIM cards of 2.4GHz.We kick off this project by analyzing Electromagnetic Field Theory for antenna design. RF antenna entity which is working at 13.56 MHz, has the transformer model. The technology term for that is inductively coupled devices and antenna design manipulate circle circuit. Radar model can be used to describe the RF antenna entity which is working at 2.4GHz. The technology term for that is EM backscattering.The development of whole system is based on ARM9 framework and uC/OS-Ⅱembedded on chip operation system. Three chapters have been painted to tell the device design.Firstly we carry out the antenna design, FM1725 has been used to create the collection circuit.Secondly whole hardware design based on the SAMSUNG S3C2410 ARM9 and uC/OS-Ⅱhas been done.Lastly we design and program the application software running on the embedded on chip operation system. And our project perfectly meet the needs for AFC systems.