Title :
A long-range RFID IC with on-chip ADC in 0.25 μm CMOS
Author :
Kocer, Fatih ; Flynn, Michael P.
Author_Institution :
Wireless Integrated Microsystems Eng. Res. Center, Univ. of Michigan, Ann Arbor, MI, USA
Abstract :
This 1 mm2 wireless telemetry device recovers power and a reference clock from a 450 MHz incident RF signal and returns data as a binary phase shift keyed signal on a 900 MHz carrier. The device generates a 3 VDC supply from the -12.3 dBm incident RF signal. This corresponds to an operating distance of more than 18 meters in the US. The transmit data includes the output of an on-chip 5-bit single-slope analog-to-digital converter (ADC) and a 3-bit ID tag. The entire IC dissipates 4mW while active.
Keywords :
AC-DC power convertors; CMOS integrated circuits; UHF integrated circuits; analogue-digital conversion; electric potential; integrated circuit design; mixed analogue-digital integrated circuits; phase shift keying; radiofrequency identification; transponders; 0.25 micron; 3 V; 4 mW; 450 MHz; 900 MHz; BPSK; CMOS; ID tag; RF signal; UHF transponders; analog-to-digital converter; binary phase shift keying; long-range RFID IC; on-chip ADC; power dissipation; reference clock; wireless power transfer; wireless telemetry device; Analog-digital conversion; Binary phase shift keying; CMOS integrated circuits; Capacitors; Clocks; Power generation; Radio frequency; Radiofrequency identification; Rectifiers; Voltage;
Conference_Titel :
Radio Frequency integrated Circuits (RFIC) Symposium, 2005. Digest of Papers. 2005 IEEE
Print_ISBN :
0-7803-8983-2
DOI :
10.1109/RFIC.2005.1489810
