Title :
A 4.0-mW 2-Mbps Programmable BFSK Transmitter For Capsule Endoscope Applications
Author :
Shen, Meng-Wei ; Lee, Chi-Ying ; Bor, Jenn-Chyou
Author_Institution :
Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu
Abstract :
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
Keywords :
CMOS integrated circuits; UHF integrated circuits; endoscopes; low-power electronics; phase shift keying; power amplifiers; transmitters; 0.35 micron; 1.85 V; 2 Mbit/s; 4 mW; 416 MHz; CMOS process; binary frequency shift keying transmitter; capsule endoscope; class-E power amplifier; crystal oscillator; frequency synthesizer; fully digital process; low drop-out regulator; programmable BFSK transmitter; serial 3-wire interface; CMOS digital integrated circuits; CMOS integrated circuits; CMOS process; Endoscopes; Frequency shift keying; Frequency synthesizers; Integrated circuit synthesis; Oscillators; Regulators; Transmitters;
Conference_Titel :
Asian Solid-State Circuits Conference, 2005
Conference_Location :
Hsinchu
Print_ISBN :
0-7803-9163-2
Electronic_ISBN :
0-7803-9163-2
DOI :
10.1109/ASSCC.2005.251711
