Pub Date : 2013-11-14DOI: 10.1109/ICUWB.2013.6663832
R. Salman, I. Willms, L. Reichardt, T. Zwick, W. Wiesbeck, R. Thoma
In this paper a bi-static, fully polarimetric Ultra-Wideband (UWB) Radar system for the detection of buried weapons as well as other man-made targets by scattering matrix decomposition is presented. A bulk good made of chunks of sand-lime brick is non-destructively inspected with the objective to survey the interior and to robustly detect discontinuities in the permittivity which might indicate a buried target. The method employs the theory of Pauli scattering matrix decomposition onto the quad-polarized Radar data to improve the detection decision. The investigations are applied to three scenarios, i.e. a model of an assault rifle, the same rifle completely buried under chunks of sand-lime brick and just a bulk good made of the same chunks. Within these investigations a novel broadband dual-polarized antenna which operates between 0.8 to 8 GHz was developed. The main features of the tapered slot lines Vivaldi antennas are a high polarization purity and a symmetric layout resulting in equal phase centres for both polarizations. The experimental validation promises for improved detection capability of buried targets by simultaneously providing high range resolution.
{"title":"On buried weapon detection by means of scattering matrix decomposition for quad-polarized ultra-wideband Radar","authors":"R. Salman, I. Willms, L. Reichardt, T. Zwick, W. Wiesbeck, R. Thoma","doi":"10.1109/ICUWB.2013.6663832","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663832","url":null,"abstract":"In this paper a bi-static, fully polarimetric Ultra-Wideband (UWB) Radar system for the detection of buried weapons as well as other man-made targets by scattering matrix decomposition is presented. A bulk good made of chunks of sand-lime brick is non-destructively inspected with the objective to survey the interior and to robustly detect discontinuities in the permittivity which might indicate a buried target. The method employs the theory of Pauli scattering matrix decomposition onto the quad-polarized Radar data to improve the detection decision. The investigations are applied to three scenarios, i.e. a model of an assault rifle, the same rifle completely buried under chunks of sand-lime brick and just a bulk good made of the same chunks. Within these investigations a novel broadband dual-polarized antenna which operates between 0.8 to 8 GHz was developed. The main features of the tapered slot lines Vivaldi antennas are a high polarization purity and a symmetric layout resulting in equal phase centres for both polarizations. The experimental validation promises for improved detection capability of buried targets by simultaneously providing high range resolution.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124793877","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 : 2013-11-14DOI: 10.1109/ICUWB.2013.6663852
H. Mextorf, Christoph Pluschke, F. Daschner, M. Kent, R. Knochel
This paper presents an ultra-wideband (UWB) system for the simultaneous measurement of multiple impulse responses. To this end, an m-sequence generator capable of generating 8 m-sequences in parallel at 10Gbps is presented. The length of the sequences can be freely adjusted up to 215-1. Exploiting the superior properties of the auto-correlation and cross-correlation functions of preferred pairs of m-sequences only one receiving channel is needed. The intended application is the determination of the moisture content of irregularly shaped objects in free-space.
{"title":"UWB multi-channel m-sequence system for moisture measurements","authors":"H. Mextorf, Christoph Pluschke, F. Daschner, M. Kent, R. Knochel","doi":"10.1109/ICUWB.2013.6663852","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663852","url":null,"abstract":"This paper presents an ultra-wideband (UWB) system for the simultaneous measurement of multiple impulse responses. To this end, an m-sequence generator capable of generating 8 m-sequences in parallel at 10Gbps is presented. The length of the sequences can be freely adjusted up to 215-1. Exploiting the superior properties of the auto-correlation and cross-correlation functions of preferred pairs of m-sequences only one receiving channel is needed. The intended application is the determination of the moisture content of irregularly shaped objects in free-space.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114365302","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 : 2013-11-14DOI: 10.1109/ICUWB.2013.6663825
R. Chávez-Santiago, Jianqing Wang, I. Balasingham
One of the most innovative applications of wireless technology in medicine is the capsule endoscope (CE). This electronic device helps to examine hard-to-reach parts of the gastrointestinal (GI) tract with significantly less discomfort for the patient than traditional endoscopic methods based on the insertion of flexible tubes. A CE has the size and shape of a pill, and after being swallowed it transmits wirelessly images of the GI tract to an external receiver worn by the patient. The images are captured with the aid of an integrated tiny camera and a light source. Through the use of sophisticated software, a video is created offline with the received images for analysis and inspection by the medical staff. In most cases, real-time video transmission is not possible. A number of commercial CE systems operating with narrowband radio interfaces are already available. Nevertheless, the quality of the CE video is generally poorer than conventional endoscopy's. The use of an ultra wideband (UWB) radio interface, which can enable high data rate transmission, would significantly enhance the video quality and reduce power consumption. The low power consumption feature could be exploited to add functional tools for purposes like biopsy or targeted drug delivery to current CE systems. Nevertheless, the high attenuation of radio signals propagating through living tissues in frequencies above 1 GHz make the use of UWB radio links for this application a major challenge. In addition, the design of an appropriate high data rate transmitter and a tiny antenna for efficient transmission over a large bandwidth are complicate tasks that require an accurate characterization of the channel. This paper presents the most important research results that we have obtained towards the implementation of a UWB-CE. Challenges and research problems in this area are outlined.
{"title":"The ultra wideband capsule endoscope","authors":"R. Chávez-Santiago, Jianqing Wang, I. Balasingham","doi":"10.1109/ICUWB.2013.6663825","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663825","url":null,"abstract":"One of the most innovative applications of wireless technology in medicine is the capsule endoscope (CE). This electronic device helps to examine hard-to-reach parts of the gastrointestinal (GI) tract with significantly less discomfort for the patient than traditional endoscopic methods based on the insertion of flexible tubes. A CE has the size and shape of a pill, and after being swallowed it transmits wirelessly images of the GI tract to an external receiver worn by the patient. The images are captured with the aid of an integrated tiny camera and a light source. Through the use of sophisticated software, a video is created offline with the received images for analysis and inspection by the medical staff. In most cases, real-time video transmission is not possible. A number of commercial CE systems operating with narrowband radio interfaces are already available. Nevertheless, the quality of the CE video is generally poorer than conventional endoscopy's. The use of an ultra wideband (UWB) radio interface, which can enable high data rate transmission, would significantly enhance the video quality and reduce power consumption. The low power consumption feature could be exploited to add functional tools for purposes like biopsy or targeted drug delivery to current CE systems. Nevertheless, the high attenuation of radio signals propagating through living tissues in frequencies above 1 GHz make the use of UWB radio links for this application a major challenge. In addition, the design of an appropriate high data rate transmitter and a tiny antenna for efficient transmission over a large bandwidth are complicate tasks that require an accurate characterization of the channel. This paper presents the most important research results that we have obtained towards the implementation of a UWB-CE. Challenges and research problems in this area are outlined.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126473620","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 : 2013-11-14DOI: 10.1109/ICUWB.2013.6663816
M. Ilarslan, M. Aydemir, E. Gose, A. S. Turk
Ultra wide band (UWB) antennas are of huge demand and Vivaldi antennas as well as the TEM Horn antennas are good candidates for UWB applications as they both have relatively simple geometry and high gain over a wide bandwidth. The aim of this study was to design such an antenna that achieves the maximum antenna gain over a bandwidth between 1 GHz to 10 GHz while minimizing the size of the antenna. The idea was to make use of combined respective advantages of Vivaldi antennas and TEM Horn antennas to achieve the desired goals by shaping the TEM Horn antenna to look like a Vivaldi antenna. The antenna structure was modified by partially dielectric loading it in the center to increase the gain and bandwidth. It was placed in a surrounding box made of PEC material to reduce the undesired side lobes to obtain a more directive radiation pattern. The simulations were performed by using the CST STUDIO SUITE Electromagnetic (EM) Simulation software. The results showed that the Vivaldi Shaped Partially Dielectric Loaded (VS-PDL) TEM horn antenna with 5 cm aperture depth had the best gain values over the desired bandwidth. This antenna is considered as compact enough for applications like hand-held impulsive Ground Penetrating Radar (GPR) and Electromagnetic Compatibility (EMC) measurement systems due to its reduced size and shielded metallic box structure.
超宽带(UWB)天线需求巨大，Vivaldi天线和TEM喇叭天线都是超宽带应用的良好候选者，因为它们都具有相对简单的几何形状和在宽带宽上的高增益。本研究的目的是设计这样一种天线，在1 GHz到10 GHz的带宽范围内实现最大的天线增益，同时最小化天线的尺寸。我们的想法是利用Vivaldi天线和TEM Horn天线各自的优势，通过将TEM Horn天线塑造成Vivaldi天线的形状来实现预期的目标。通过在天线中心部分加载介质来改善天线结构，提高了天线的增益和带宽。它被放置在一个由PEC材料制成的周围盒子中，以减少不需要的侧叶，以获得更直接的辐射模式。采用CST STUDIO SUITE电磁仿真软件进行仿真。结果表明，孔径深度为5 cm的维瓦尔第形部分介电负载(VS-PDL) TEM喇叭天线在期望带宽范围内具有最佳增益值。这种天线被认为是足够紧凑的应用，如手持式脉冲探地雷达(GPR)和电磁兼容性(EMC)测量系统，由于其缩小的尺寸和屏蔽金属盒结构。
{"title":"The design and simulation of a compact Vivaldi Shaped Partially Dielectric Loaded (VS-PDL) TEM Horn antenna for UWB applications","authors":"M. Ilarslan, M. Aydemir, E. Gose, A. S. Turk","doi":"10.1109/ICUWB.2013.6663816","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663816","url":null,"abstract":"Ultra wide band (UWB) antennas are of huge demand and Vivaldi antennas as well as the TEM Horn antennas are good candidates for UWB applications as they both have relatively simple geometry and high gain over a wide bandwidth. The aim of this study was to design such an antenna that achieves the maximum antenna gain over a bandwidth between 1 GHz to 10 GHz while minimizing the size of the antenna. The idea was to make use of combined respective advantages of Vivaldi antennas and TEM Horn antennas to achieve the desired goals by shaping the TEM Horn antenna to look like a Vivaldi antenna. The antenna structure was modified by partially dielectric loading it in the center to increase the gain and bandwidth. It was placed in a surrounding box made of PEC material to reduce the undesired side lobes to obtain a more directive radiation pattern. The simulations were performed by using the CST STUDIO SUITE Electromagnetic (EM) Simulation software. The results showed that the Vivaldi Shaped Partially Dielectric Loaded (VS-PDL) TEM horn antenna with 5 cm aperture depth had the best gain values over the desired bandwidth. This antenna is considered as compact enough for applications like hand-held impulsive Ground Penetrating Radar (GPR) and Electromagnetic Compatibility (EMC) measurement systems due to its reduced size and shielded metallic box structure.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131223453","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 : 2013-11-14DOI: 10.1109/ICUWB.2013.6663854
S. Olonbayar, D. Kreiser, R. Kraemer
Design, simulation, implementation and performance of IR-UWB baseband conforming to IEEE802.15.4a are discussed. The baseband can support various data rates such as 850 Kb/s, 6.81 Mb/s and 27.24 Mb/s. The design and parameter selection were considered carefully taking into account all possible imperfections that IR-UWB high frequency signal can experience. Energy detection receiver employing a comparator clocked at 499.2 MHz was adopted for the digitisation. Using I and Q path both positive and negative pulses were detected with a high reliability leading to a very good synchronisation performance. Simulation results confirm that the synchronisation is very robust being always correct for office NLOS environment and a large clock deviation between transmitter and receiver. The algorithm presented in this paper was implemented with discrete components, FPGA and signal generators. Experimental results show a good agreement with the simulation for all the data rates and the implemented baseband offers around six meter communication range tested along with a high frequency frontend from discrete components.
{"title":"Performance and implementation of a multi-rate IR-UWB baseband transceiver for IEEE802.15.4a","authors":"S. Olonbayar, D. Kreiser, R. Kraemer","doi":"10.1109/ICUWB.2013.6663854","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663854","url":null,"abstract":"Design, simulation, implementation and performance of IR-UWB baseband conforming to IEEE802.15.4a are discussed. The baseband can support various data rates such as 850 Kb/s, 6.81 Mb/s and 27.24 Mb/s. The design and parameter selection were considered carefully taking into account all possible imperfections that IR-UWB high frequency signal can experience. Energy detection receiver employing a comparator clocked at 499.2 MHz was adopted for the digitisation. Using I and Q path both positive and negative pulses were detected with a high reliability leading to a very good synchronisation performance. Simulation results confirm that the synchronisation is very robust being always correct for office NLOS environment and a large clock deviation between transmitter and receiver. The algorithm presented in this paper was implemented with discrete components, FPGA and signal generators. Experimental results show a good agreement with the simulation for all the data rates and the implemented baseband offers around six meter communication range tested along with a high frequency frontend from discrete components.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131614150","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 : 2013-11-14DOI: 10.1109/ICUWB.2013.6663855
Hyunwoo Cho, Qi Zhou, Xiaoli Ma
Generalized code-multiplexing (GCM) systems have been recently proposed for non-coherent ultra-wideband communications for their simple receiver structure. By simply correlating the outputs of energy integrators with decoding codes, the GCM receiver detects information symbols without the need of delay components for transmitted reference or analog carriers for frequency-shifted reference. In addition, the GCM systems subsume existing code-multiplexing designs such as code-multiplexed transmitted reference (CM-TR) and code-shifted reference (CSR) and could even provide better error performance and/or higher data rate. However, the existing GCM receiver is generally not a maximum likelihood detector (MLD). In this paper, we propose MLDs for GCM systems based on the statistics of the signals of GCM receivers. With the aid of the statistics, the MLDs for GCM systems inherit the simple non-coherent structure of GCM receivers and further improve the error performance. Extensive simulations are conducted to show the considerable performance gain of the proposed MLDs compared to the GCM receivers for both CSR codes and optimal GCM codes.
{"title":"Maximum likelihood detectors for generalized code-multiplexing ultra-wideband systems","authors":"Hyunwoo Cho, Qi Zhou, Xiaoli Ma","doi":"10.1109/ICUWB.2013.6663855","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663855","url":null,"abstract":"Generalized code-multiplexing (GCM) systems have been recently proposed for non-coherent ultra-wideband communications for their simple receiver structure. By simply correlating the outputs of energy integrators with decoding codes, the GCM receiver detects information symbols without the need of delay components for transmitted reference or analog carriers for frequency-shifted reference. In addition, the GCM systems subsume existing code-multiplexing designs such as code-multiplexed transmitted reference (CM-TR) and code-shifted reference (CSR) and could even provide better error performance and/or higher data rate. However, the existing GCM receiver is generally not a maximum likelihood detector (MLD). In this paper, we propose MLDs for GCM systems based on the statistics of the signals of GCM receivers. With the aid of the statistics, the MLDs for GCM systems inherit the simple non-coherent structure of GCM receivers and further improve the error performance. Extensive simulations are conducted to show the considerable performance gain of the proposed MLDs compared to the GCM receivers for both CSR codes and optimal GCM codes.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124995700","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 : 2013-11-14DOI: 10.1109/ICUWB.2013.6663831
R. Salman, I. Willms, T. Sakamoto, Toru Sato, A. Yarovoy
In this paper a 3D bi-static, fully polarimetric Ultra-Wideband (UWB) imaging system which satisfies superresolution conditions is presented. The objective is to inspect a target with weak scattering centres and to prove the performance of recent imaging methods under these conditions. This issue is handicapped further by spanning a suboptimal synthetic array, i.e. the main beam of the antennas is not aligned with the orientation of the weak scatterers. An opened laptop with a knife fixed at the back of the display is used as the target for an experimental validation. The radar cross section of the keyboard in this position can be assumed to be very small which reveals very weak multibounce scattering mechanisms. The evaluation of the imaging is performed by the real-time capable revised range point migration (RRPM) and the conventional Kirchhoff migration. The experimental validation is carried out with a pair of two tapered slot line Vivaldi antennas both integrated in a conical shaped teflon rod and an M-sequence Radar device with 100% fractional bandwidth at a carrier of 9 GHz.
{"title":"3D imaging of a manmade target with weak scattering centres by means of UWB-radar","authors":"R. Salman, I. Willms, T. Sakamoto, Toru Sato, A. Yarovoy","doi":"10.1109/ICUWB.2013.6663831","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663831","url":null,"abstract":"In this paper a 3D bi-static, fully polarimetric Ultra-Wideband (UWB) imaging system which satisfies superresolution conditions is presented. The objective is to inspect a target with weak scattering centres and to prove the performance of recent imaging methods under these conditions. This issue is handicapped further by spanning a suboptimal synthetic array, i.e. the main beam of the antennas is not aligned with the orientation of the weak scatterers. An opened laptop with a knife fixed at the back of the display is used as the target for an experimental validation. The radar cross section of the keyboard in this position can be assumed to be very small which reveals very weak multibounce scattering mechanisms. The evaluation of the imaging is performed by the real-time capable revised range point migration (RRPM) and the conventional Kirchhoff migration. The experimental validation is carried out with a pair of two tapered slot line Vivaldi antennas both integrated in a conical shaped teflon rod and an M-sequence Radar device with 100% fractional bandwidth at a carrier of 9 GHz.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"223 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122094129","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 : 2013-11-14DOI: 10.1109/ICUWB.2013.6663822
M. Navarro, P. Closas, M. Nájar
This paper assesses the problem of localization in IR-UWB under realistic channel models for Direct Position Estimation (DPE) approaches. DPE schemes have been proposed for positioning and localization for well developed systems like GNSS, where it has been analytically proved that the Maximum-likelihood single-step estimator outperforms two-step procedures. The extension to wideband systems and less favorable scenarios like indoor UWB channels is less explored. We derive a DPE algorithm and analyze its performance against two-step TOA based localization for an IR-UWB system. Numerical results are provided for IEEE 802.15.4a channel model showing positioning performance of the two approaches and highlighting the tradeoffs.
{"title":"Assessment of Direct Positioning for IR-UWB in IEEE 802.15.4a channels","authors":"M. Navarro, P. Closas, M. Nájar","doi":"10.1109/ICUWB.2013.6663822","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663822","url":null,"abstract":"This paper assesses the problem of localization in IR-UWB under realistic channel models for Direct Position Estimation (DPE) approaches. DPE schemes have been proposed for positioning and localization for well developed systems like GNSS, where it has been analytically proved that the Maximum-likelihood single-step estimator outperforms two-step procedures. The extension to wideband systems and less favorable scenarios like indoor UWB channels is less explored. We derive a DPE algorithm and analyze its performance against two-step TOA based localization for an IR-UWB system. Numerical results are provided for IEEE 802.15.4a channel model showing positioning performance of the two approaches and highlighting the tradeoffs.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127165996","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 : 2013-11-14DOI: 10.1109/ICUWB.2013.6663862
Ayobami B. Iji, Xie Zhu, M. Heimlich
For transceiver design in low cost CMOS technologies, one of the most challenging elements is the voltage controlled oscillator (VCO), especially if designed for low power. A VCO has been designed and measured where a MOS transistor is used as a varactor, as part of strategy to obtain the wide tuning range of 500MHz. Phase noise was measured and found to be -111dBc/Hz at 1MHz offset at an oscillation frequency of 3.2GHz. The VCO, implemented in 0.25μm Silicon on Sapphire (SOS) CMOS, consumes 600μW of DC power from a 1.2V source and is suitable for implantable UWB applications.
对于低成本CMOS技术中的收发器设计，最具挑战性的元素之一是压控振荡器(VCO)，特别是在低功耗设计时。设计并测量了一个用MOS晶体管作为变容管的压控振荡器，作为获得500MHz宽调谐范围策略的一部分。测量了相位噪声，发现在3.2GHz振荡频率下，在1MHz偏置时相位噪声为-111dBc/Hz。该VCO采用0.25μm的SOS (Silicon on Sapphire) CMOS芯片，功耗为600μW，电源为1.2V，适用于可植入的超宽带应用。
{"title":"A 3GHz low power, MOS varactor voltage controlled oscillator for implantable ultra wideband applications in CMOS Silicon-On-Sapphire (SOS) process","authors":"Ayobami B. Iji, Xie Zhu, M. Heimlich","doi":"10.1109/ICUWB.2013.6663862","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663862","url":null,"abstract":"For transceiver design in low cost CMOS technologies, one of the most challenging elements is the voltage controlled oscillator (VCO), especially if designed for low power. A VCO has been designed and measured where a MOS transistor is used as a varactor, as part of strategy to obtain the wide tuning range of 500MHz. Phase noise was measured and found to be -111dBc/Hz at 1MHz offset at an oscillation frequency of 3.2GHz. The VCO, implemented in 0.25μm Silicon on Sapphire (SOS) CMOS, consumes 600μW of DC power from a 1.2V source and is suitable for implantable UWB applications.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"59 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114035974","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 : 2013-11-14DOI: 10.1109/ICUWB.2013.6663863
Tuan-Anh Vu, T. Lande
In this paper, we propose a continuous-time differential single-bit quantizer intended for impulse radio ultrawideband (IR-UWB) receivers. It exploits an active balun at the input to obtain single-ended to differential conversion. The quantizer prototype was fabricated in 90 nm CMOS and occupies a chip area of 0.09 mm2. The proposed quantizer achieves a -3 dB bandwidth of 2.4 GHz with a high differential gain of approximately 35 dB and a sensitivity of 40 mV at 2 GHz. Power consumption is 13.1 mW from 1.2 V supply voltage and the performance was verified experimentally.
{"title":"A continuous-time differential single-bit quantizer for IR-UWB receivers","authors":"Tuan-Anh Vu, T. Lande","doi":"10.1109/ICUWB.2013.6663863","DOIUrl":"https://doi.org/10.1109/ICUWB.2013.6663863","url":null,"abstract":"In this paper, we propose a continuous-time differential single-bit quantizer intended for impulse radio ultrawideband (IR-UWB) receivers. It exploits an active balun at the input to obtain single-ended to differential conversion. The quantizer prototype was fabricated in 90 nm CMOS and occupies a chip area of 0.09 mm2. The proposed quantizer achieves a -3 dB bandwidth of 2.4 GHz with a high differential gain of approximately 35 dB and a sensitivity of 40 mV at 2 GHz. Power consumption is 13.1 mW from 1.2 V supply voltage and the performance was verified experimentally.","PeriodicalId":159159,"journal":{"name":"2013 IEEE International Conference on Ultra-Wideband (ICUWB)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130644626","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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