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doc.: IEEE 15-14-0394-00-004q. July 2014. Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: Injection Locked Receiver with Multi-phase Ring Oscillators Date Submitted: July 11, 2014 Source: Weidong Gao , Xiaopeng Yu , Jingwen Liu, Wei Hu
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doc.: IEEE 15-14-0394-00-004q July 2014 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: Injection Locked Receiver with Multi-phase Ring Oscillators Date Submitted: July 11, 2014 Source: Weidong Gao, Xiaopeng Yu, Jingwen Liu, Wei Hu Company: Potevio Information Technology Co., Ltd, Zhejiang Univercity Address: No.6 Haidian North Second Street, Haidian District, Beijing 100080, China Contact: Weidong Gao Voice: +86 10 82484642 E-Mail: gaoweidong@potevio.com Re: In response to TG4q Call for proposals Abstract: This contribution demonstrates ULP Low Power receiver design. Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15. Submission Slide 1 Weidong Gao(Potevio)
Injection Locked Receiver with Multi-phase Ring Oscillators July , 2014 Weidong Gao doc.: IEEE 15-14-0394-00-004q July 2014 Submission Slide 2 Weidong Gao(Potevio)
Abstract This presentation demonstratea new receiver architecture for ultra-low power receiver suitable for sub-GHz and GHz range short-range communications. doc.: IEEE 15-14-0394-00-004q July 2014 Submission Slide 3 Weidong Gao(Potevio)
Review of TG4q PHY bands and Data rates doc.: IEEE 15-14-0394-00-004q July 2014 • The standard offers two PHY options based on the frequency band. Both are based on directsequence spread spectrum (DSSS). The data rate is 250kbps at 2.4GHz, 40kbps at 915MHz and20kbps at 868MHz. The higher data rate at 2.4GHz is attributed to a higher-order modulationscheme. • Lower frequency provide longer range due to lower propagation losses. Low rate can betranslated into better sensitivity and larger coverage area. Higher rate means higher throughput, lower latency or lower duty cycle.[1] Submission Slide 4 Weidong Gao(Potevio)
doc.: IEEE 15-14-0394-00-004q July 2014 Review of Ultra-Low Power Receivers-1 Envelop detection of a self-demodulator (w/o oscillator) • W/O oscillator, it is able to work at wide-band • Simple typology, low power • LNA typical gain 10-20dB Submission Slide 5 Weidong Gao(Potevio)
doc.: IEEE 15-14-0394-00-004q July 2014 Review of Ultra-Low Power Receivers-2 Injection locked oscillator based receiver(w oscillator) • W/O low noise amplifier • Simple typology, low power • LNA typical gain 10-20dB, but with ILO, the gain of input weak signal can higher than 40dB Submission Slide 6 Weidong Gao(Potevio)
doc.: IEEE 15-14-0394-00-004q July 2014 Design consideration of ILO based receiver • Carrier Frequency • Types of Oscillators • Bandwidth or data-rate • Locking range of the oscillator • Potential fading of IF signal due to non-coherent demodulation Here a phase-difference between received RF signal and ILO’s output inducing potential fading of output signal Submission Slide 7 Weidong Gao(Potevio)
doc.: IEEE 15-14-0394-00-004q July 2014 The Ring Oscillator based ILO Delay-cell Ring-Oscillator Submission Slide 8 Weidong Gao(Potevio)
doc.: IEEE 15-14-0394-00-004q July 2014 The output frequency of the ring oscillator The ring oscillator is able to cover 400MHz to 3GHz frequency ranges Submission Slide 9 Weidong Gao(Potevio)
doc.: IEEE 15-14-0394-00-004q July 2014 The operation of signal recovery A receiver is designed in a 40nm CMOS technology, the input OOK RF signal, the output of IF signal and recovered data are shown in the Figure above. The data rate can be as high as 10Mbps, the power consumption of the receiver is less than 1mW. Submission Slide 10 Weidong Gao(Potevio)
doc.: IEEE 15-14-0394-00-004q July 2014 The ILO based receiver with I/Q path By Implement I/Q paths, the IF fading cased by non-coherent demodulator can be cancelled. Submission Slide 11 Weidong Gao(Potevio)
doc.: IEEE 15-14-0394-00-004q July 2014 The ILO with I/Q outputs The Delay Cell The Ring Oscillator Submission Slide 12 Weidong Gao(Potevio)
doc.: IEEE 15-14-0394-00-004q July 2014 Conclusion • TG4q PHY bands and Data rates is reviewed as the guide line. • Frequency bands for WBAN is reviewed as additional reference. • The implementation of injection locked oscillator based receiver which suitable for low power consumption is reviewed, and designed. • The ring oscillator based ILO receiver is suitable for short range, low data rate implementation. Submission Slide 13 Weidong Gao(Potevio)
doc.: IEEE 15-14-0394-00-004q July 2014 References [1] SC Ergen"ZigBee/IEEE 802.15.4 Summary"September 10, 2004 [2]A. W. ASTRIN, H.-B. LI, and R. KOHNO, "standardization forbody area networks, IEICE Transactions on Communications", vol. E92.B, no. 2, pp.366.372, 2009. [3] Li, X., Baltus, P.G.M., Zeijl, P.T.M. van, Milosevic, D., Roermund, A.H.M. van, “A 70 GHz 10.2 mW Self-demodulator in 65-nm CMOS Technology,” in Proceedings of IEEE Custom Integrated Circuit Conference (CICC 2010), San Jose, US, Sep. 2010. Submission Slide 14 Weidong Gao(Potevio)
