A fully integrated Chip-ID tag used in chip information identification

A fresh and creative passive UHF RFID tag, which can be referred to as "Chip-ID tag", has been proposed in this paper. The fully integrated Chip-ID tag, fabricated on the same substrate of the identified SOC, can be used for the SOC chip information identification, such as the chip manufacturer, function and series number identification, etc. The Chip-ID tag without OCA can be implemented as small as a PAD. OCA can be embedded in the periphery of the identified SOC chip or outside the ring of bonding pad. In order to guarantee the maximum power transmission between the reader antenna and the OCA tag, theoretical and experimental analysis between reader antenna and Chip-ID tag have been presented for verifying the feasibility of the proposed Chip-ID tag in this work. Finally, a Chip-ID tag with 4 mm × 4 mm single-turn square loop OCA, including the identified SOC chip, is successfully designed and taped out in 0.18-um CMOS technology. Measurement results demonstrate that the Chip-ID tag can be powered up and then transmit a unique Chip-ID data to the single-turn loop reader antenna with diameter of 1 cm by 110 KHz full-ASK clock signals modulation in complete contact circumstances, when reader transmit -9dBm RF input power at 915 MHz band. The maximum reading range of 1.3 cm can be achieved with 20dBm RF input power by the reader generated. It is worth emphasizing that, within all published papers, this paper is the first time to put forward a self-contained, CMOS-only Chip-ID tag for the SOC chip information identification.