A 4.0-mW 2-Mbps Programmable BFSK Transmitter For Capsule Endoscope Applications
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A low power binary frequency shift keying (BFSK) transmitter has been proposed for capsule endoscope applications. The transmitter IC includes a low drop-out (LDO) regulator, a crystal oscillator, a class-E power amplifier (PA) and a frequency synthesizer with dual control loops. The parameters of the transmitter, including carrier frequency, frequency deviation and etc., can be set by a serial 3-wire interface. The transmitter IC is implemented in TSMC 0.35 mum CMOS process occupies 3.47 mm2 and can be fabricated in a fully digital process. For supply voltage down to 1.85 V, and the transmitter center frequency set to 416 MHz, a maximum data rate of 2 Mbps can be achieved with -24 dBm output power and only 4.0 mW power consumption
[1] Gabriel A. Rincon-Mora,et al. A low-voltage, low quiescent current, low drop-out regulator , 1998, IEEE J. Solid State Circuits.
[2] J. van den Homberg. A universal 0.03-mm/sup 2/ one-pin crystal oscillator in CMOS , 1999 .
[3] N. Boom,et al. A 5.0mW 0dBm FSK transmitter for 315/433 MHz ISM applications in 0.25 /spl mu/m CMOS , 2004, Proceedings of the 30th European Solid-State Circuits Conference.