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Author Yao-Hong Liu ♦ Tsung-Hsien Lin
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2008
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics ♦ Electricity & electronics ♦ Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Transmitters ♦ Biomedical imaging ♦ Phase modulation ♦ Frequency shift keying ♦ Energy consumption ♦ Digital filters ♦ Radio frequency ♦ Frequency synthesizers ♦ Baseband ♦ Energy efficiency
Abstract A 400-MHz phase-mux-based O-QPSK transmitter (TX) for medical imaging applications is presented in this paper. The modulation signal is generated by selecting one of the four quadrature phases to the TX output via a proposed Phase MUX. An inverter-type power amplifier is utilized for it is compatible with the quasi constant-envelope nature of the O-QPSK modulation. Fabricated in a 0.18-mum CMOS process, the whole TX draws 2.9 mA from a 1.2-V supply. With a maximum 15-Mbps data rate, the TX achieves an energy efficiency of 0.23 nJ/bit and delivers an output power up to -7 dBm.
Description Author affiliation: Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei (Yao-Hong Liu; Tsung-Hsien Lin)
ISBN 9781424420186
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2008-09-21
Publisher Place USA
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 852.09 kB
Page Count 4
Starting Page 599
Ending Page 602


Source: IEEE Xplore Digital Library