A 330-μW 400-MHz BPSK Transmitter in 0.18-μm CMOS for Biomedical Applications
Journal
IEEE Transactions on Circuits and Systems II: Express Briefs
Journal Volume
63
Journal Issue
5
Pages
448-452
Date Issued
2016
Author(s)
Abstract
An energy-efficient 400-MHz binary phase-shift keying (BPSK) transmitter (TX) is proposed for biomedical applications in this brief.The BPSKsignal is generated by edge-combining multiple phases from a low-frequency voltage-controlled oscillator (VCO), which avoids power-hungry local oscillator generation at RF. Furthermore, the output matching network and edge combiner are merged into a power amplifier (PA), leading to a hardware-efficient and low-power design. Fabricated in a 0.18-μm CMOS process, the proposed TX consumes 330 μW and delivers-15-dBm output power. The modulator operates at 0.8 V, and PA operates at 0.2-V supply voltage. The TX can support a data rate up to 20 Mb/s, achieving an energy efficiency of 14.9 pJ/bit. The measured error vector magnitude at 20 Mb/s is 10%. © 2004-2012 IEEE.
Subjects
BPSK transmitter; edge combiner; phase-MUX; short-range transmission
SDGs
Other Subjects
Binary phase shift keying; Circuit oscillations; CMOS integrated circuits; Electric power supplies to apparatus; Low power electronics; Medical applications; Oscillators (electronic); Oscillistors; Phase shift; Phase shift keying; Phase shifters; Power amplifiers; Transmitters; Variable frequency oscillators; Binary Phase Shift Keying(BPSK); Biomedical applications; Edge combiners; Error vector magnitude; Low frequency voltage; Output matching network; phase-MUX; Transmitters (Tx); Energy efficiency
Type
journal article