A 228μW Injection Locked Ring Oscillator based BPSK Demodulator in 65nm CMOS

被引：2
|
作者：
Zhu, Qiang [1 ]
Xu, Yang [1 ]
机构：
[1] IIT, Dept Elect & Comp Engn, Chicago, IL 60616 USA
来源：
2010 IEEE RADIO FREQUENCY INTEGRATED CIRCUITS RFIC SYMPOSIUM | 2010年
关键词：
CMOS analog integrated circuits; demodulators; injection locked oscillators; phase shift keying; telemetry;
D O I：
10.1109/RFIC.2010.5477316
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper presents an ultra-low power BPSK demodulator based on injection locked oscillators (ILOs). Two second harmonic ILOs are employed to convert BPSK signals to ASK signals which are demodulated by an envelope detector to baseband signals. For sub-GHz applications, the ILOs are implemented using ring oscillators to allow compact chip area and ultra-low power dissipation. The prototype demodulator is fabricated in a 65nm CMOS technology that consumes 228 mu W of power and occupies 0.014mm(2) of die area. Measurement results reveal the demodulation of BPSK signal at 750-900MHz carrier with the minimum sensitivity of -33dBm.
引用
收藏
页码：497 / 500
页数：4
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