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2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals最新文献

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The biopotential of acupuncture points and its standard error 穴位生物电位及其标准误差
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027185
Yeonhee Ryu, S. Cho, Sang Hun Lee, S. Lee, K. Choi, Sun-Mi Choi
{"title":"The biopotential of acupuncture points and its standard error","authors":"Yeonhee Ryu, S. Cho, Sang Hun Lee, S. Lee, K. Choi, Sun-Mi Choi","doi":"10.1109/IMWS2.2011.6027185","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027185","url":null,"abstract":"We studied the biopotential of acupuncture points in six meridians and its standard error to verify how reliable it is to measure electric potential on skin for investigating electrical properties of acupuncture points. Twenty healthy subjects were participated in this study for each meridian. Five-phase acupuncture points were used for recording then smoothing and normalizing were performed to analyze data. There was a positive correlation between standard error of biopotentials and acupuncture depth. It means acupuncture points close to the skin provide more reliable results than ones with deeper acupuncture depth when investigating electrophysiological characteristics of meridians.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130477229","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}
引用次数: 2
Compact WLAN dual-band filter using independent band stop resonators combined with diplexer 紧凑的WLAN双带滤波器采用独立带阻谐振器与双工器相结合
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027209
J. Park, S. Cheon, Jae Y. Park, Jeong-Taek Lim
{"title":"Compact WLAN dual-band filter using independent band stop resonators combined with diplexer","authors":"J. Park, S. Cheon, Jae Y. Park, Jeong-Taek Lim","doi":"10.1109/IMWS2.2011.6027209","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027209","url":null,"abstract":"In this paper, a highly miniaturized dual-band band pass filter has firstly been developed by embedding all the passive lumped elements into a LTCC substrate for 2.4–2.5 GHz (802.11b) and 5.15–5.85 GHz (802.11a/g) WLAN applications. In order to reduce a size/volume of the filter and improve its performances, the proposed filter was newly designed by using J-inverter transformation technology, independent transmission zero technology and independent band-stop resonators. The J-inverter transformation technology was highly effective to minimize electromagnetic parasitic coupling between the large inductors. The newly applied independent band-stop resonator helped to reduce the number of passive elements in the filter circuit. Finally, designed dual-band filter was combined with simple LC diplexer. The measured maximum insertion losses of the fabricated dual-band WLAN filter were better than 2.3 and 1.3 dB in the lower and upper pass-bands, respectively. Return loss was higher than 15 dB. The overall size/volume of the fabricated filter module was 4.7 × 2.3 × 0.68 mm3","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121377008","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}
引用次数: 3
A novel microstrip Yagi antenna with tunable radiation pattern and central frequency 一种新型辐射方向图和中心频率可调微带八木天线
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027173
Ding Yihan, Z. Xiaoying
{"title":"A novel microstrip Yagi antenna with tunable radiation pattern and central frequency","authors":"Ding Yihan, Z. Xiaoying","doi":"10.1109/IMWS2.2011.6027173","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027173","url":null,"abstract":"A novel microstrip Yagi antenna with tunable radiation pattern and central frequency is presented. Microstrip Yagi antenna has a obvious disadvantage that the main lobe doesn't easy to adjust. Our new antenna, choosing ferrite as its substrate, applied Yagi antenna's principle microstrip antenna theory and the design experience of Yagi antenna. By using ferrite's special characteristic, this antenna realizes tunable radiation pattern and centural frequency. All possible radiation pattern and centural frequency can be achieved by change the angle of magnetic bias.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122968854","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}
引用次数: 1
An LDO-based supply referencing 10b 32MS/s pipelined ADC 基于ldo的电源参考10b 32MS/s流水线ADC
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027169
Chang-Kyo Lee, Ji-Wook Kwon, Sang-Hyun Cho, S. Ryu
{"title":"An LDO-based supply referencing 10b 32MS/s pipelined ADC","authors":"Chang-Kyo Lee, Ji-Wook Kwon, Sang-Hyun Cho, S. Ryu","doi":"10.1109/IMWS2.2011.6027169","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027169","url":null,"abstract":"A reference driver-free pipelined ADC with a low drop-out (LDO) regulator for power supply is proposed for SoC applications. An LDO-based regulated voltage provides not only power supply for digital and analog circuits but also works as a reference voltage for the ADC. Conventional residue function from a 2.5b/stage design can use its max input as much as 93% of the internal supply voltage. A prototype 10-bit 32MS/s ADC has been designed for a 0.18µm CMOS technology. Under a regulated 1.5V internal supply from an external 1.8V, the design shows 65.1dB SFDR with 7.06mA (including LDO) current consumption.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"659 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114088655","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}
引用次数: 0
A study of measurement the load impedance mismatch 负载阻抗失配测量方法的研究
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027206
Soosul Hwang, Sung-Yong Hong
{"title":"A study of measurement the load impedance mismatch","authors":"Soosul Hwang, Sung-Yong Hong","doi":"10.1109/IMWS2.2011.6027206","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027206","url":null,"abstract":"This paper presents a simple method for measurement the unknown load impedance mismatch between amplifier and antenna. The method to measure load impedance mismatch consists of sections of transmission line and voltage measurements at appropriate locations along the transmission line. Simulation is performed using Agilent's ADS software tool to determine the physical dimensions and the circuit characteristics. And AD834 quadrant multiplier is used to voltage sensor for measuring the 3-point voltage on sectioned transmission line. Simulation and test results show good agreement with theoretical predictions.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117035542","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}
引用次数: 2
Wi-Fi fingerprint-based approaches following log-distance path loss model for indoor positioning 基于对数距离路径损耗模型的Wi-Fi指纹室内定位方法
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027190
S. Jung, Choon-Oh Lee, Dongsoo Han
{"title":"Wi-Fi fingerprint-based approaches following log-distance path loss model for indoor positioning","authors":"S. Jung, Choon-Oh Lee, Dongsoo Han","doi":"10.1109/IMWS2.2011.6027190","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027190","url":null,"abstract":"Wi-Fi fingerprint based indoor positioning methods exploits naive signal strength in each location to predict user's location. However, using naïve signal strength may limit the prediction accuracy, because the Wi-Fi signals follow the Log-distance path loss model in signal propagation. In this research, we propose to generate Wi-Fi fingerprint with the consideration of radio propagation model to reflex the characteristics of Wi-Fi signal. The evaluation result shows that following log-distance path loss model improves the prediction accuracy in fingerprint based indoor positioning.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131131043","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}
引用次数: 58
A time-based noise shaping analog-to-digital converter using a gated-ring oscillator 一种基于时间的噪声整形模数转换器，采用门环振荡器
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027172
Y. Yoon, Sang-Hyun Park, Seonghwan Cho
{"title":"A time-based noise shaping analog-to-digital converter using a gated-ring oscillator","authors":"Y. Yoon, Sang-Hyun Park, Seonghwan Cho","doi":"10.1109/IMWS2.2011.6027172","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027172","url":null,"abstract":"In this paper, a time-based analog-to-digital converter (ADC) with first order noise shaping property is presented. The ADC consists of a pulse-width modulator (PWM) and a time-to-digital converter (TDC) based on a gated-ring oscillator. A prototype is designed in 0.18µm CMOS and simulated to verify the concept. The ADC shows high linearity despite the open loop architecture since the linearity does not depend on the frequency tuning characteristic of oscillators unlike conventional noise shaping time-based ADCs. With the sampling frequency of 10MHz, the prototype achieves spurious-free dynamic range (SFDR) and signal-to-noise-and-distortion ratio (SNDR) of 66dB and 56dB, respectively, when the signal bandwidth is 500kHz.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133156305","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}
引用次数: 5
Compact switched and reconfigurable 4-ports beam antenna array for MIMO applications 紧凑的开关和可重构的4端口波束天线阵列的MIMO应用
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027210
Viet-Anh Nguyen, P. Ook
{"title":"Compact switched and reconfigurable 4-ports beam antenna array for MIMO applications","authors":"Viet-Anh Nguyen, P. Ook","doi":"10.1109/IMWS2.2011.6027210","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027210","url":null,"abstract":"In this paper, we analyze and introduce a practical design for a switched beam planar antenna that can be implemented as a compact and low cost switched and/or reconfigurable beam antenna array. The antenna is composed of a four ports antenna array based on arranged eight L-shaped quarter-wavelength slot antenna elements. This type of antenna array is a planar structure and its maximum directional radiation beam pattern presents in azimuth plane with the covering of 360 degree. The operation of antenna array is based on the statuses of ON/OFF stage of PIN diodes in each individual slot antenna element and the combined signals from four ports. Consequently, by proper controlling the stage of PIN diodes, the antenna can exposes its characteristic of switchable and/or reconfigurable beam patterns in φ-plane. The antenna array size is about 56 mm in square with four ports. To prove the concept, a 2.5–2.8 GHz switched-beam antenna for WLAN applications in MIMO is simulated and fabricated.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121326763","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}
引用次数: 12
A 0.4V 6.5nW 10b 2.5kS/s asynchronous SAR ADC 一个0.4V 6.5nW 10b 2.5k /s异步SAR ADC
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027215
Dong-Shin Jo, S. Ryu
{"title":"A 0.4V 6.5nW 10b 2.5kS/s asynchronous SAR ADC","authors":"Dong-Shin Jo, S. Ryu","doi":"10.1109/IMWS2.2011.6027215","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027215","url":null,"abstract":"A 0.4V 6.5nW 10b 2.5kS/s SAR ADC is proposed for energy-limited applications such as wireless micro-sensor networks, biomedical, and energy harvesting systems. The ADC operates at extremely low supply voltage (0.4V) to reduce power consumption and to eliminate short-circuit current. The channel length of MOSFETs in digital block is optimized to minimize digital power consumption. Small unit capacitor and low top parasitic capacitance is obtained by the proposed capacitor structure. The simulation results show that SFDR, SNDR, ENOB are 63.8dB, 58.1dB and 9.4bit at Nyquist input frequency, respectively. The figure-of-merit (FOM) is 3.98fJ/conv-step.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125868642","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}
引用次数: 3
Floor accuracy improvement of wireless LAN based large scale indoor positioning 基于无线局域网的大规模室内定位地板精度的提高
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027200
Hyunil Yang, Gi-Wan Yoon, Dongsoo Han
{"title":"Floor accuracy improvement of wireless LAN based large scale indoor positioning","authors":"Hyunil Yang, Gi-Wan Yoon, Dongsoo Han","doi":"10.1109/IMWS2.2011.6027200","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027200","url":null,"abstract":"WLAN signal based positioning is most popular in indoor localization, where GPS is hardly working inside buildings. In WLAN localization system, floor errors are occurred occasionally, which cause the serious side effects in indoor navigation system. In this paper, we introduce our floor-error correcting method. Simply, the correction method is based on Wi-Fi access point set similarity. We devised a new method with less floor errors than conventional system. We applied our proposed method to COEX, the most realistic case comparing with other researches. Therefore we expect that the result in this paper is meaningful to the researchers in same discipline.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127643170","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}
引用次数: 1
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