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

fYear

2005

fDate

Nov. 2005

Firstpage

245

Lastpage

248

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Asian Solid-State Circuits Conference, 2005

Conference_Location

Hsinchu

Print_ISBN

0-7803-9163-2

Electronic_ISBN

0-7803-9163-2

Type

conf

DOI

10.1109/ASSCC.2005.251711

Filename

4017577