Design and implementation of the baseband section for a 900MHz passive tag in a 0.5µm CMOS process

The design and implementation of digital circuitry for building a 900MHz passive tag in a standard 0.5mum CMOS technology is presented. The digital circuitry (hereafter called Digital Section, DS) including a voltage-controlled oscillator (VCO) satisfies the baseband requirements of ISO/IEC18000-6 type A standard. To verify the DS's functionality, a basic Tag-Reader was designed in order to apply test sequences. Power consumption, maximum operation frequency, and area utilization analyses were done using Synopsy's Design Compiler. The obtained results show that the proposed architecture fulfils the requirements stated for the implementation.