Pub Date : 2017-08-01DOI: 10.23919/URSIGASS.2017.8105054
N. Fourati, C. Zerrouki
Surface acoustic wave (SAW) sensors are versatile devices, as they can be used to sensing temperature, pressure, strain, torque or mass. Theses abilities can be extended to chemical and biological investigations by suitable functionalisation of the sensing area. Depending on the intended application, the sensitive layer which must to specifically detect the chemical or the biological analyt of interest, may be: single strand DNA, antibody, antigen proteins, self-assembled monolayers, molecularly or ionic imprinted polymers,… This presentation will focus on some chemical and biological applications we have developed, to highlight the potential of this kind of sensors.
{"title":"Surface acoustic wave sensors: From design to chemical and biological applications","authors":"N. Fourati, C. Zerrouki","doi":"10.23919/URSIGASS.2017.8105054","DOIUrl":"https://doi.org/10.23919/URSIGASS.2017.8105054","url":null,"abstract":"Surface acoustic wave (SAW) sensors are versatile devices, as they can be used to sensing temperature, pressure, strain, torque or mass. Theses abilities can be extended to chemical and biological investigations by suitable functionalisation of the sensing area. Depending on the intended application, the sensitive layer which must to specifically detect the chemical or the biological analyt of interest, may be: single strand DNA, antibody, antigen proteins, self-assembled monolayers, molecularly or ionic imprinted polymers,… This presentation will focus on some chemical and biological applications we have developed, to highlight the potential of this kind of sensors.","PeriodicalId":377869,"journal":{"name":"2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS)","volume":"41 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128484235","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 : 2017-08-01DOI: 10.23919/URSIGASS.2017.8105398
M. Cervera, D. Francis, G. Frazer
Models of radar systems are required for a variety of reasons. The sophistication of these models is highly dependant on their purpose; for instance microwave radar models which are designed to be integrated into existing wargaming simulation frameworks will often be low-fidelity models. The development of similar models of over-the-horizon radar is particulary challenging. This is due to the highly variable propagation environment in which such systems are required to operate: even the lowest fidelity model of an OTH radar must model the environmental conditions appropriately. The “base level” environmental modelling required to accurately characterise OTH radar performance is the climatology, i.e. diurnal, seasonal and solar cycle variations. In this paper we detail a climatological model of OTH radar (CMOR) developed using high frequency (HF) radio wave raytracing techniques. We discuss how this model may be integrated into low-fidelity wargaming simulations, used to provide initial assessments of the viability of candidate OTH radar networks to meet particular missions and how it may be used in highly sophisticated radar network design methodologies. The last example is the subject of a companion paper presented in this forum.
{"title":"Climatological model of over-the-horizon radar (CMOR)","authors":"M. Cervera, D. Francis, G. Frazer","doi":"10.23919/URSIGASS.2017.8105398","DOIUrl":"https://doi.org/10.23919/URSIGASS.2017.8105398","url":null,"abstract":"Models of radar systems are required for a variety of reasons. The sophistication of these models is highly dependant on their purpose; for instance microwave radar models which are designed to be integrated into existing wargaming simulation frameworks will often be low-fidelity models. The development of similar models of over-the-horizon radar is particulary challenging. This is due to the highly variable propagation environment in which such systems are required to operate: even the lowest fidelity model of an OTH radar must model the environmental conditions appropriately. The “base level” environmental modelling required to accurately characterise OTH radar performance is the climatology, i.e. diurnal, seasonal and solar cycle variations. In this paper we detail a climatological model of OTH radar (CMOR) developed using high frequency (HF) radio wave raytracing techniques. We discuss how this model may be integrated into low-fidelity wargaming simulations, used to provide initial assessments of the viability of candidate OTH radar networks to meet particular missions and how it may be used in highly sophisticated radar network design methodologies. The last example is the subject of a companion paper presented in this forum.","PeriodicalId":377869,"journal":{"name":"2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS)","volume":"120 1 Suppl 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128488626","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 : 2017-08-01DOI: 10.23919/URSIGASS.2017.8105080
S. Biswas, M. Le, V. Chandrasekar
The Global Precipitation Measurement (GPM) mission Core Observatory is equipped with a dual-frequency precipitation radar (DPR) operating at frequency channel of 13.6 GHz (Ku-band) and 35.5 GHz (Ka-band). In this paper, GPM-DPR's simultaneous observations at these two frequencies are used to study the characteristics of vertical profile of reflectivity of snow. An algorithm to identify falling snow is considered. Its performance is also evaluated by cross validation with dual polarization measurements from ground radar.
{"title":"Identification of snow from GPM-DPR observations and cross validation with S-band ground radar dual polarization measurements","authors":"S. Biswas, M. Le, V. Chandrasekar","doi":"10.23919/URSIGASS.2017.8105080","DOIUrl":"https://doi.org/10.23919/URSIGASS.2017.8105080","url":null,"abstract":"The Global Precipitation Measurement (GPM) mission Core Observatory is equipped with a dual-frequency precipitation radar (DPR) operating at frequency channel of 13.6 GHz (Ku-band) and 35.5 GHz (Ka-band). In this paper, GPM-DPR's simultaneous observations at these two frequencies are used to study the characteristics of vertical profile of reflectivity of snow. An algorithm to identify falling snow is considered. Its performance is also evaluated by cross validation with dual polarization measurements from ground radar.","PeriodicalId":377869,"journal":{"name":"2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129359537","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 : 2017-08-01DOI: 10.23919/URSIGASS.2017.8104991
Pascal Burasa, K. Wu
This paper experimentally analyses and highlights the origin of spurious noise of differential millimeter-wave rectifier. The measurement results reveal that the RF signal leakage into the rectifier's dc output node due to lower isolation at millimeter-wave frequencies, and the transistors' flicker noise, as well as the shot noise are the main noise source in the rectified voltage. Furthermore, layout optimization and low-power voltage regulator greatly reduce spurious noise in the rectified voltage and render the rectifier a viable voltage power supply.
{"title":"Noise analysis of differential wideband millimeter-wave power harvester implemented in 65-nm bulk CMOS process","authors":"Pascal Burasa, K. Wu","doi":"10.23919/URSIGASS.2017.8104991","DOIUrl":"https://doi.org/10.23919/URSIGASS.2017.8104991","url":null,"abstract":"This paper experimentally analyses and highlights the origin of spurious noise of differential millimeter-wave rectifier. The measurement results reveal that the RF signal leakage into the rectifier's dc output node due to lower isolation at millimeter-wave frequencies, and the transistors' flicker noise, as well as the shot noise are the main noise source in the rectified voltage. Furthermore, layout optimization and low-power voltage regulator greatly reduce spurious noise in the rectified voltage and render the rectifier a viable voltage power supply.","PeriodicalId":377869,"journal":{"name":"2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124664054","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 : 2017-08-01DOI: 10.23919/URSIGASS.2017.8105275
K. Klein
The acceleration of charged particles to high energies is a common, though poorly understood, process in natural plasmas. In the astrophysical domain the heliosphere offers particularly favorable conditions for its study because of the proximity of the observer to the acceleration sites and the ensuing possibility to observe radiative signatures with spatial and temporal resolution, and to combine remote sensing observations with in situ measurements. Although candidate processes such as shock waves, magnetic reconnection and turbulence involve much smaller spatial and temporal scales than accessible to observations, multi-instrument observations reveal an increasing number of constraints.
{"title":"Radio signatures of particle acceleration in the solar corona","authors":"K. Klein","doi":"10.23919/URSIGASS.2017.8105275","DOIUrl":"https://doi.org/10.23919/URSIGASS.2017.8105275","url":null,"abstract":"The acceleration of charged particles to high energies is a common, though poorly understood, process in natural plasmas. In the astrophysical domain the heliosphere offers particularly favorable conditions for its study because of the proximity of the observer to the acceleration sites and the ensuing possibility to observe radiative signatures with spatial and temporal resolution, and to combine remote sensing observations with in situ measurements. Although candidate processes such as shock waves, magnetic reconnection and turbulence involve much smaller spatial and temporal scales than accessible to observations, multi-instrument observations reveal an increasing number of constraints.","PeriodicalId":377869,"journal":{"name":"2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126879187","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 : 2017-08-01DOI: 10.23919/URSIGASS.2017.8104968
K. Cwalina, S. Ambroziak, Piotr Rajchowski, L. Correia
In the paper, a characterization of the 868 MHz off-body radio channel in BANs is presented. Measurements were carried out in a ferry environment using a specific set-up. A method for path loss using radio distance measurements (RDMs) was developed. It allows to automate the measurements process and make it independent from the variable speed of a moving person. Based on the observed path loss as a function of distance, the obtained values are divided into Line-of-Sight (LOS) and Non-Line-of-Sight (NLOS) conditions. The results show that, in LOS, the smallest path loss mean value (67.79 dB) and standard deviation (3.87 dB) were obtained for the placement of the mobile node (MN) on the chest (TOF) of a moving person in an approaching scenario (APR). In NLOS, the lowest path loss mean value (71.57 dB) was also obtained for the same scenario. In other scenarios, more than approximately 5 dB higher path loss mean value was obtained.
{"title":"Radio channel measurements in 868 MHz off-body communications in a ferry environment","authors":"K. Cwalina, S. Ambroziak, Piotr Rajchowski, L. Correia","doi":"10.23919/URSIGASS.2017.8104968","DOIUrl":"https://doi.org/10.23919/URSIGASS.2017.8104968","url":null,"abstract":"In the paper, a characterization of the 868 MHz off-body radio channel in BANs is presented. Measurements were carried out in a ferry environment using a specific set-up. A method for path loss using radio distance measurements (RDMs) was developed. It allows to automate the measurements process and make it independent from the variable speed of a moving person. Based on the observed path loss as a function of distance, the obtained values are divided into Line-of-Sight (LOS) and Non-Line-of-Sight (NLOS) conditions. The results show that, in LOS, the smallest path loss mean value (67.79 dB) and standard deviation (3.87 dB) were obtained for the placement of the mobile node (MN) on the chest (TOF) of a moving person in an approaching scenario (APR). In NLOS, the lowest path loss mean value (71.57 dB) was also obtained for the same scenario. In other scenarios, more than approximately 5 dB higher path loss mean value was obtained.","PeriodicalId":377869,"journal":{"name":"2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123609635","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 : 2017-08-01DOI: 10.23919/URSIGASS.2017.8105394
A. Abdelnour, A. Rennane, D. Kaddour, S. Tedjini
This article discusses the possibility of making unconventional antenna designs for RFID tags based on artistic figures and symbols. Some classical techniques of impedance matching are used in order to match these structures to commercial RFID chips without modifying a lot the shape of the structure. These tags were simulated on HFSS and their read ranges were measured and compared to a conventional antenna design.
{"title":"On the transformation of symbols and figures to RFID tags","authors":"A. Abdelnour, A. Rennane, D. Kaddour, S. Tedjini","doi":"10.23919/URSIGASS.2017.8105394","DOIUrl":"https://doi.org/10.23919/URSIGASS.2017.8105394","url":null,"abstract":"This article discusses the possibility of making unconventional antenna designs for RFID tags based on artistic figures and symbols. Some classical techniques of impedance matching are used in order to match these structures to commercial RFID chips without modifying a lot the shape of the structure. These tags were simulated on HFSS and their read ranges were measured and compared to a conventional antenna design.","PeriodicalId":377869,"journal":{"name":"2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116287749","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 : 2017-08-01DOI: 10.23919/URSIGASS.2017.8104501
M. Morgan, S. Wunduke, J. Castro, T. Boyd, W. Groves
We will review the latest advances in compact, integrated analog-digital-photonic receivers for radio astronomy. Utilizing a number of novel architectural techniques, such as numerically calibrated digital sideband separation and polarization synthesis, amplitude- and phase-stabilizing reflectionless filters, and unformatted serial data links, these units are ideal for focal plane arrays and phasedarray feeds (PAFs) at any frequency, as well as cost-efficient field-replaceable front-end modules on large-M/small-D interferometers. These techniques are illustrated in this summary paper via practical examples ranging from L-Band (1.2–1.7 GHz) to W-band (75–110 GHz).
{"title":"Compact cm-Wave and mm-Wave integrated receivers","authors":"M. Morgan, S. Wunduke, J. Castro, T. Boyd, W. Groves","doi":"10.23919/URSIGASS.2017.8104501","DOIUrl":"https://doi.org/10.23919/URSIGASS.2017.8104501","url":null,"abstract":"We will review the latest advances in compact, integrated analog-digital-photonic receivers for radio astronomy. Utilizing a number of novel architectural techniques, such as numerically calibrated digital sideband separation and polarization synthesis, amplitude- and phase-stabilizing reflectionless filters, and unformatted serial data links, these units are ideal for focal plane arrays and phasedarray feeds (PAFs) at any frequency, as well as cost-efficient field-replaceable front-end modules on large-M/small-D interferometers. These techniques are illustrated in this summary paper via practical examples ranging from L-Band (1.2–1.7 GHz) to W-band (75–110 GHz).","PeriodicalId":377869,"journal":{"name":"2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS)","volume":"584 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116301789","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 : 2017-08-01DOI: 10.23919/URSIGASS.2017.8105006
J. A. L. Pérez, J. López-Fernández
This paper shows the latest technological developments Yebes Observatory in microwave and millimeter wave instrumentation for radio astronomy.
介绍了叶贝斯天文台在射电天文微波和毫米波仪器方面的最新技术进展。
{"title":"Microwave and millimeter-wave technological developments at Yebes Observatory","authors":"J. A. L. Pérez, J. López-Fernández","doi":"10.23919/URSIGASS.2017.8105006","DOIUrl":"https://doi.org/10.23919/URSIGASS.2017.8105006","url":null,"abstract":"This paper shows the latest technological developments Yebes Observatory in microwave and millimeter wave instrumentation for radio astronomy.","PeriodicalId":377869,"journal":{"name":"2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121490272","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 : 2017-08-01DOI: 10.23919/URSIGASS.2017.8105263
S. Wane, D. Bajon, J. Russer, P. Russer, G. Gradoni
Exponentially increasing demands for higher data rates and quality of service cannot be satisfied by delivering more power as higher power levels may reduce Signal-to-Interference-plus-Noise Ratio (SINR) with negative impact on overall system performances. Simultaneously, the continuous shrinking in transistors size for denser circuits integration, following Moore's law, will be constrained by the physical limits while the switching energy is approaching the thermal noise spectral density. The resulting thermal cooling capacity in terms of energy per unit time for given area will lead to a bottleneck. This paper calls for Energy-Geometry-Entropy Co-design tradeoffs for addressing the challenges of emerging technologies and for driving innovative applications relative to interactions of humans with smart devices in randomly changing environments.
{"title":"Energy-geometry-entropy bounds aware analysis of stochastic field-field correlations for emerging wireless communication technologies","authors":"S. Wane, D. Bajon, J. Russer, P. Russer, G. Gradoni","doi":"10.23919/URSIGASS.2017.8105263","DOIUrl":"https://doi.org/10.23919/URSIGASS.2017.8105263","url":null,"abstract":"Exponentially increasing demands for higher data rates and quality of service cannot be satisfied by delivering more power as higher power levels may reduce Signal-to-Interference-plus-Noise Ratio (SINR) with negative impact on overall system performances. Simultaneously, the continuous shrinking in transistors size for denser circuits integration, following Moore's law, will be constrained by the physical limits while the switching energy is approaching the thermal noise spectral density. The resulting thermal cooling capacity in terms of energy per unit time for given area will lead to a bottleneck. This paper calls for Energy-Geometry-Entropy Co-design tradeoffs for addressing the challenges of emerging technologies and for driving innovative applications relative to interactions of humans with smart devices in randomly changing environments.","PeriodicalId":377869,"journal":{"name":"2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124541846","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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