A Reconfigurable Sliding-IF Transceiver for 400 MHz/2.4 GHz IEEE 802.15.6/ZigBee WBAN Hubs With Only 21% Tuning Range VCO

Zhang, Lingwei; Jiang, Hanjun; Wu, Jianjun; Jiang, Dong; Li, Fule; Li, Weitao; Gao, Jia; Cui, Jianwei; Chi, Baoyong; Zhang, Chun; Wang, Zhihua

doi:10.1109/jssc.2013.2274893

Cited by 52 publications

(15 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The value of the DC power consumption P DC is significantly higher than in [8] and [9], because both PLLs and the SILO were in operation during measurement. The SILO itself already consumes about 70 mW at an output power of 12.2 dBm.…”

Section: Resultsmentioning

confidence: 91%

Integrated tri-state PLL for the control of a switched injection-locked oscillator at 2.45 GHz

Schulz

Joram

El-Shennawy

et al. 2016

2016 German Microwave Conference (GeMiC)

View full text Add to dashboard Cite

This paper presents a novel combination of two fully integrated phase-locked loops (PLLs) to control the oscillation frequency and modulation frequency of a switched injectionlocked oscillator (SILO). The SILO is used as an active reflector transponder in a frequency-modulated continuous wave (FMCW) radar system. A fractional-N PLL (RF-PLL) with a tri-state phase-frequency detector (TSPFD) sets the oscillation frequency of the voltage controlled oscillator (VCO) to 2.45 GHz. Another integer-N PLL (modulation PLL) switches the tail current source of the VCO to achieve SILO behavior at the time when the RF-PLL is not controlling the VCO. The RF-PLL supports division ratios from 64 to 511 with a frequency resolution of 0.2 Hz. Reference spur levels are below -48 dBc while the outof-band phase noise is -103 dBc/Hz at a 1 MHz frequency offset. The modulation PLL is based on a Maneatis-cell ring-oscillator supporting modulation frequencies between 6 MHz and 20 MHz. Furthermore, the duty cycle of the modulation signal can be set in steps of 0.8 %. Due to the novel TSPFD, the oscillation frequency of the SILO changes only by 36 MHz within 10 minutes when the RF-PLL is inactive. The complete circuit is manufactured in a 180 nm SiGe BiCMOS process and consumes a total power of 128 mW.

show abstract

Section: Resultsmentioning

confidence: 91%

Integrated tri-state PLL for the control of a switched injection-locked oscillator at 2.45 GHz

Schulz

Joram

El-Shennawy

et al. 2016

2016 German Microwave Conference (GeMiC)

View full text Add to dashboard Cite

show abstract

“…The implementation of a 0.18 µm CMOS reconfigurable sliding-IF transceiver targeting 400 MHz/2.4 GHz IEEE 802.15.6/ZigBee WBAN hubs is presented in [31]. The receiver part comprises a wideband front-end and a reconfigurable amplifier-mixer.…”

Section: Transceiver Implementations and Architecture Considerationsmentioning

confidence: 99%

Communication Challenges in on-Body and Body-to-Body Wearable Wireless Networks—A Connectivity Perspective

et al. 2017

View full text Add to dashboard Cite

Wearable wireless networks (WWNs) offer innovative ways to connect humans and/or objects anywhere, anytime, within an infinite variety of applications. WWNs include three levels of communications: on-body, body-to-body and off-body communication. Successful communication in on-body and body-to-body networks is often challenging due to ultra-low power consumption, processing and storage capabilities, which have a significant impact on the achievable throughput and packet reception ratio as well as latency. Consequently, all these factors make it difficult to opt for an appropriate technology to optimize communication performance, which predominantly depends on the given application. In particular, this work emphasizes the impact of coarse-grain factors (such as dynamic and diverse mobility, radio-link and signal propagation, interference management, data dissemination schemes, and routing approaches) directly affecting the communication performance in WWNs. Experiments have been performed on a real testbed to investigate the connectivity behavior on two wireless communication levels: on-body and body-to-body. It is concluded that by considering the impact of above-mentioned factors, the general perception of using specific technologies may not be correct. Indeed, for on-body communication, by using the IEEE 802.15.6 standard (which is specifically designed for on-body communication), it is observed that while operating at low transmission power under realistic conditions, the connectivity can be significantly low, thus, the transmission power has to be tuned carefully. Similarly, for body-to-body communication in an indoor environment, WiFi IEEE 802.11n also has a high threshold of end-to-end disconnections beyond two hops (approximatively 25 m). Therefore, these facts promote the use of novel technologies such as 802.11ac, NarrowBand-IoT (NB-IoT) etc. as possible candidates for body-to-body communications as a part of the Internet of humans concept.

show abstract

“…Sliding IF receivers [7], [21]- [22] avoid the quadrature LO generation at RF, similar as heterodyne receivers. Contrary to the need for SAW filters in the heterodyne receiver, the sliding IF architecture maintains a high integration level.…”

Section: B Architectures For Ulp Receiversmentioning

confidence: 99%

“…Contrary to the need for SAW filters in the heterodyne receiver, the sliding IF architecture maintains a high integration level. Careful frequency planning is crucial to avoid problems with image channels [7] or for multistandard implementations [22]. In addition, in case of a transceiver, a wide VCO tuning range is needed to generate the different LO for receive and for transmit mode.…”

Section: B Architectures For Ulp Receiversmentioning

confidence: 99%

See 1 more Smart Citation

Ultra Low Power short range radios: Covering the last mile of the IoT

Philips

2014

ESSCIRC 2014 - 40th European Solid State Circuits Conference (ESSCIRC)

View full text Add to dashboard Cite

Short Range Radios are predicted to realize a paradigm change by 2020, similar to the revolution of mobile communication, in the nineties. These radios provide the last mile wireless connectivity between "things" and the Internet. They connect your new wearable devices to your smart phone, or enable smart energy monitoring and control in your home.In this paper, we analyze the power breakdown of such new consumer devices operating from small, advanced batteries. It is shown that the wireless connectivity has a dominant impact on the overall power budget of these devices. Today, short range radios with Ultra-Low Power (ULP) consumption, in the range of a few mW, are reported. It is shown that future small and flexible sensor nodes need wireless connectivity at sub-mW "U 2 LP" consumption. An overview of state-of-the-art short range transceivers reveals promising architectures and circuits to reach the U 2 LP target.

show abstract

A Reconfigurable Sliding-IF Transceiver for 400 MHz/2.4 GHz IEEE 802.15.6/ZigBee WBAN Hubs With Only 21% Tuning Range VCO

Cited by 52 publications

References 26 publications

Integrated tri-state PLL for the control of a switched injection-locked oscillator at 2.45 GHz

Integrated tri-state PLL for the control of a switched injection-locked oscillator at 2.45 GHz

Communication Challenges in on-Body and Body-to-Body Wearable Wireless Networks—A Connectivity Perspective

Ultra Low Power short range radios: Covering the last mile of the IoT

Contact Info

Product

Resources

About