Pub Date : 2011-03-07DOI: 10.1109/RWS.2011.5725464
A. Noda, H. Shinoda
In this paper we propose a selective wireless power transmission method using a two-dimensional waveguide sheet with a thick insulator layer. The thick insulator layer prevents strong electromagnetic fields induced by general objects put on the sheet. Only a resonant coupler enclosed with a special energy confining structure can extract sufficient power from the sheet. We design a coupler that is enclosed with a multiple-choke structure as an example of realizations. We demonstrate the selectivity through full-wave simulations and experiments. The unwanted power extraction by a planar conductor is less than 2.5%, while the coupler efficiency is 70%.
{"title":"Selective wireless power transmission through 2D waveguide sheet using strong electromagnetic confinement by choke-enclosed resonant coupler","authors":"A. Noda, H. Shinoda","doi":"10.1109/RWS.2011.5725464","DOIUrl":"https://doi.org/10.1109/RWS.2011.5725464","url":null,"abstract":"In this paper we propose a selective wireless power transmission method using a two-dimensional waveguide sheet with a thick insulator layer. The thick insulator layer prevents strong electromagnetic fields induced by general objects put on the sheet. Only a resonant coupler enclosed with a special energy confining structure can extract sufficient power from the sheet. We design a coupler that is enclosed with a multiple-choke structure as an example of realizations. We demonstrate the selectivity through full-wave simulations and experiments. The unwanted power extraction by a planar conductor is less than 2.5%, while the coupler efficiency is 70%.","PeriodicalId":250672,"journal":{"name":"2011 IEEE Radio and Wireless Symposium","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121075383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-03-07DOI: 10.1109/RWS.2011.5725447
S. Marinkovic, E. Popovici
We developed, implemented and tested a Nano-power Wake Up Radio mainly intended for Wireless Body Area Networks (WBANs), but it can be also used in other types of low power wireless networks. The radio was tested for power consumption and robustness to communication interferences from a wireless devices commonly found around the person carrying a WBAN. Results show that our radio has significantly lower power consumption when idle listening (470nW) than other state-of-the-art radios. We also developed passive filtering method that can, along with our preamble detection method, significantly reduce power for false wake ups in a WBAN.
{"title":"Nano-power Wake-Up Radio circuit for Wireless Body Area Networks","authors":"S. Marinkovic, E. Popovici","doi":"10.1109/RWS.2011.5725447","DOIUrl":"https://doi.org/10.1109/RWS.2011.5725447","url":null,"abstract":"We developed, implemented and tested a Nano-power Wake Up Radio mainly intended for Wireless Body Area Networks (WBANs), but it can be also used in other types of low power wireless networks. The radio was tested for power consumption and robustness to communication interferences from a wireless devices commonly found around the person carrying a WBAN. Results show that our radio has significantly lower power consumption when idle listening (470nW) than other state-of-the-art radios. We also developed passive filtering method that can, along with our preamble detection method, significantly reduce power for false wake ups in a WBAN.","PeriodicalId":250672,"journal":{"name":"2011 IEEE Radio and Wireless Symposium","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117084004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-03-07DOI: 10.1109/RWS.2011.5725468
J. Jantunen, M. Pelissier
In this paper, we propose a connection set-up procedure and a simplified protocol for the synchronization of super-regenerative impulse UWB transceivers in a RF memory tag system. The protocol utilizes efficiently the features of the super-regenerative transceiver architecture, such as the short Tx-Rx switching time enabling responses on pulse level. The proposed communication system is designed so that the timing of transmission and reception can be fixed on pulse level for bi-directional communication which efficiently minimizes the need of preambles and resynchronization on packet level.
{"title":"Connection set-up and synchronization in RF memory tag system","authors":"J. Jantunen, M. Pelissier","doi":"10.1109/RWS.2011.5725468","DOIUrl":"https://doi.org/10.1109/RWS.2011.5725468","url":null,"abstract":"In this paper, we propose a connection set-up procedure and a simplified protocol for the synchronization of super-regenerative impulse UWB transceivers in a RF memory tag system. The protocol utilizes efficiently the features of the super-regenerative transceiver architecture, such as the short Tx-Rx switching time enabling responses on pulse level. The proposed communication system is designed so that the timing of transmission and reception can be fixed on pulse level for bi-directional communication which efficiently minimizes the need of preambles and resynchronization on packet level.","PeriodicalId":250672,"journal":{"name":"2011 IEEE Radio and Wireless Symposium","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121271723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-03-07DOI: 10.1109/RWS.2011.5725427
H. Maune, M. Sazegar, Y. Zheng, R. Jakoby
Low cost planar ferroelectric thick film varactors based on Barium Strontium Titanate (BST) are realized and their nonlinear behavior with varying DC bias is investigated. A model for the capacitance tunability is utilized for nonlinear simulations and compared to measurements. The model based on static measurement of the varactor's capacity is extended by the results from measurements with pulsed tuning voltage. A memory effect in the capacitance tunability of the varactor is observed in measurements with pulsed bias voltage. The impact of this memory effect to the nonlinear properties is presented.
{"title":"Memory effects in ferroelectric thick film varactors based on Barium Strontium Titanate","authors":"H. Maune, M. Sazegar, Y. Zheng, R. Jakoby","doi":"10.1109/RWS.2011.5725427","DOIUrl":"https://doi.org/10.1109/RWS.2011.5725427","url":null,"abstract":"Low cost planar ferroelectric thick film varactors based on Barium Strontium Titanate (BST) are realized and their nonlinear behavior with varying DC bias is investigated. A model for the capacitance tunability is utilized for nonlinear simulations and compared to measurements. The model based on static measurement of the varactor's capacity is extended by the results from measurements with pulsed tuning voltage. A memory effect in the capacitance tunability of the varactor is observed in measurements with pulsed bias voltage. The impact of this memory effect to the nonlinear properties is presented.","PeriodicalId":250672,"journal":{"name":"2011 IEEE Radio and Wireless Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121791464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-03-07DOI: 10.1109/RWS.2011.5725470
Hou-Chung Lin, Jau-Horng Chen
This paper presents an architecture for implementing a wide dynamic range pulse-modulated polar transmitter and its system-level requirements. For validation of the proposed architecture, a simulation platform is constructed using a CDMA2000 1X signal. The system level simulation results show that the architecture can achieve over 80-dB dynamic range easily and accurately while passing the spectral requirements of the CDMA2000 standard. Using the simulation results, design specifications of various blocks required for implementing the proposed architecture are derived and reported. Compared to a conventional linear transmitter architecture that uses two high-resolution digital-to-analog converters (DACs), the proposed architecture requires only two low-resolution DACs and an all-digital pulse width modulation block. The eased DAC requirements would significantly reduce the cost and space for implementing a radio-frequency transmitter.
{"title":"System-level requirements for implementing wide dynamic range pulse-modulated polar transmitters","authors":"Hou-Chung Lin, Jau-Horng Chen","doi":"10.1109/RWS.2011.5725470","DOIUrl":"https://doi.org/10.1109/RWS.2011.5725470","url":null,"abstract":"This paper presents an architecture for implementing a wide dynamic range pulse-modulated polar transmitter and its system-level requirements. For validation of the proposed architecture, a simulation platform is constructed using a CDMA2000 1X signal. The system level simulation results show that the architecture can achieve over 80-dB dynamic range easily and accurately while passing the spectral requirements of the CDMA2000 standard. Using the simulation results, design specifications of various blocks required for implementing the proposed architecture are derived and reported. Compared to a conventional linear transmitter architecture that uses two high-resolution digital-to-analog converters (DACs), the proposed architecture requires only two low-resolution DACs and an all-digital pulse width modulation block. The eased DAC requirements would significantly reduce the cost and space for implementing a radio-frequency transmitter.","PeriodicalId":250672,"journal":{"name":"2011 IEEE Radio and Wireless Symposium","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132067420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-03-07DOI: 10.1109/RWS.2011.5725426
Z. Salmani, Hualiang Zhang
In this paper, we propose a UWB antenna operating from 2.45GHz to 11.6GHz. This antenna is a combination of two antenna elements which are connected in a way inspired by the log-periodic antenna array technique. To reduce the total size of proposed antenna, compact metamaterial based antennas are employed as the basic radiating elements. To verify our design concept, a prototype antenna is designed on FR4 substrate, which exhibits good radiation over the entire designed frequency range from 2.45GHz to 11.6GHz.
{"title":"Log-periodic antenna array inspired parallel strip ultra-wideband (UWB) antenna","authors":"Z. Salmani, Hualiang Zhang","doi":"10.1109/RWS.2011.5725426","DOIUrl":"https://doi.org/10.1109/RWS.2011.5725426","url":null,"abstract":"In this paper, we propose a UWB antenna operating from 2.45GHz to 11.6GHz. This antenna is a combination of two antenna elements which are connected in a way inspired by the log-periodic antenna array technique. To reduce the total size of proposed antenna, compact metamaterial based antennas are employed as the basic radiating elements. To verify our design concept, a prototype antenna is designed on FR4 substrate, which exhibits good radiation over the entire designed frequency range from 2.45GHz to 11.6GHz.","PeriodicalId":250672,"journal":{"name":"2011 IEEE Radio and Wireless Symposium","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131299705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-03-07DOI: 10.1109/RWS.2011.5725459
S. Pan, J. Yao
A simple scheme to simultaneously generate a UWB signal and a wired signal in the optical domain using a dual-drive modulator is proposed and demonstrated. A 1.25-Gb/s optical UWB signal and 1.25-Gb/s wired signal are generated, which are then transmitted over a 36-km single-mode fiber (SMF). Eye diagrams, electrical spectra and BER measurements show that the interference between the two signals is very small. The system is wavelength independent, which would reduce greatly the cost while improving significantly the spectrum efficiency of a WDM-PON network incorporating a UWB over fiber system for broadband wireless access.
{"title":"Simultaneous generation and transmission of UWB wireless and baseband wired signals employing a dual-drive modulator","authors":"S. Pan, J. Yao","doi":"10.1109/RWS.2011.5725459","DOIUrl":"https://doi.org/10.1109/RWS.2011.5725459","url":null,"abstract":"A simple scheme to simultaneously generate a UWB signal and a wired signal in the optical domain using a dual-drive modulator is proposed and demonstrated. A 1.25-Gb/s optical UWB signal and 1.25-Gb/s wired signal are generated, which are then transmitted over a 36-km single-mode fiber (SMF). Eye diagrams, electrical spectra and BER measurements show that the interference between the two signals is very small. The system is wavelength independent, which would reduce greatly the cost while improving significantly the spectrum efficiency of a WDM-PON network incorporating a UWB over fiber system for broadband wireless access.","PeriodicalId":250672,"journal":{"name":"2011 IEEE Radio and Wireless Symposium","volume":"196 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115321470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-03-07DOI: 10.1109/RWS.2011.5725495
A. Khwaja, P. Daruwalla, K. Manseta, E. Sultan, L. Zhou, K. Pourrezaei, L. Najafizadeh, A. Gandjbakhche, A. Daryoush
Functional spectroscopic measurements of brain matter using near IR wavelengths are characterized by absorption coefficient μa and scattering coefficient μs. To increase the accuracy of parameter extraction, a broadband frequency modulated system is proposed and design and implementation challenges of a completely untethered and field deployable unit and a high speed wireless communication system is considered to complement a free space optical communication system.
{"title":"UWB wireless link design and implementation challenges in broadband frequency modulated fNIR biomedical imaging","authors":"A. Khwaja, P. Daruwalla, K. Manseta, E. Sultan, L. Zhou, K. Pourrezaei, L. Najafizadeh, A. Gandjbakhche, A. Daryoush","doi":"10.1109/RWS.2011.5725495","DOIUrl":"https://doi.org/10.1109/RWS.2011.5725495","url":null,"abstract":"Functional spectroscopic measurements of brain matter using near IR wavelengths are characterized by absorption coefficient μa and scattering coefficient μs. To increase the accuracy of parameter extraction, a broadband frequency modulated system is proposed and design and implementation challenges of a completely untethered and field deployable unit and a high speed wireless communication system is considered to complement a free space optical communication system.","PeriodicalId":250672,"journal":{"name":"2011 IEEE Radio and Wireless Symposium","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123843810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-03-07DOI: 10.1109/RWS.2011.5725473
T. Matsubara, I. Hayashi, Abul Hasan Johari, Satoshi Kumak, Kaoru Kohira, T. Kuroda, H. Ishikuro
This paper presents a pulse-based inductive-coupling transceiver in 65nm CMOS for high-speed wireless proximity communication. The transceiver operates at 0.5V supply voltage. A pulse bootstrap circuit and a common drain output stage enables transmitter to operate at ultra-low voltage. In the receiver, a gain boosted common-gate amplifier is used to reduce the input impedance and suppress the ringing of received pulse signal. The data rate and energy efficiency are 1.1Gb/s/ch and 0.91pJ/bit, respectively at 0.5V supply voltage. The data rate can be increased to 1.7Gb/s/ch at 0.75V.
{"title":"An 0.5V, 0.91pJ/bit, 1.1Gb/s/ch transceiver in 65nm CMOS for high-speed wireless proximity interface","authors":"T. Matsubara, I. Hayashi, Abul Hasan Johari, Satoshi Kumak, Kaoru Kohira, T. Kuroda, H. Ishikuro","doi":"10.1109/RWS.2011.5725473","DOIUrl":"https://doi.org/10.1109/RWS.2011.5725473","url":null,"abstract":"This paper presents a pulse-based inductive-coupling transceiver in 65nm CMOS for high-speed wireless proximity communication. The transceiver operates at 0.5V supply voltage. A pulse bootstrap circuit and a common drain output stage enables transmitter to operate at ultra-low voltage. In the receiver, a gain boosted common-gate amplifier is used to reduce the input impedance and suppress the ringing of received pulse signal. The data rate and energy efficiency are 1.1Gb/s/ch and 0.91pJ/bit, respectively at 0.5V supply voltage. The data rate can be increased to 1.7Gb/s/ch at 0.75V.","PeriodicalId":250672,"journal":{"name":"2011 IEEE Radio and Wireless Symposium","volume":"21 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120840048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-03-07DOI: 10.1109/RWS.2011.5725513
Weihong Niu, Jia Li, T. Talty
To eliminate the requirement for a delay unit capable of processing wideband signals in a conventional UWB transmitted reference (TR) receiver, the slightly frequency shifted (SFS) reference UWB signaling scheme has been proposed in the literature. Motivated by the flexibility of the digital systems and the availability of sophisticated digital signal processing circuits, this paper proposes a digital implementation of the SFS TR UWB receiver. Performance of such a digital receiver is derived and evaluated based on the channel measurements from the intra-vehicle environments.
{"title":"Quantization of UWB TR receiver with slightly frequency shifted reference","authors":"Weihong Niu, Jia Li, T. Talty","doi":"10.1109/RWS.2011.5725513","DOIUrl":"https://doi.org/10.1109/RWS.2011.5725513","url":null,"abstract":"To eliminate the requirement for a delay unit capable of processing wideband signals in a conventional UWB transmitted reference (TR) receiver, the slightly frequency shifted (SFS) reference UWB signaling scheme has been proposed in the literature. Motivated by the flexibility of the digital systems and the availability of sophisticated digital signal processing circuits, this paper proposes a digital implementation of the SFS TR UWB receiver. Performance of such a digital receiver is derived and evaluated based on the channel measurements from the intra-vehicle environments.","PeriodicalId":250672,"journal":{"name":"2011 IEEE Radio and Wireless Symposium","volume":"878 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122451883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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