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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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A switchable quadband LNA for mobile wireless communications exploiting varactor tuning 一种利用变容管调谐的移动无线通信的可切换四频带LNA
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027211
Nam-Jin Oh
{"title":"A switchable quadband LNA for mobile wireless communications exploiting varactor tuning","authors":"Nam-Jin Oh","doi":"10.1109/IMWS2.2011.6027211","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027211","url":null,"abstract":"A low-power switchable quad-band CMOS LNA for PCS(1.8 GHz), WCDMA(2.1 GHz), WiBro(2.3 GHz), and LTE(2.6 GHz) applications is presented. The proposed LNA has an advantage of occupying less chip area compared to other concurrent topology which uses more inductors by adopting LC tank resonators. Also, it consumes less current compared to other topology which adopts a switched parallel transistor technique. The proposed LNA is designed using a 0.18-µm CMOS technology. The LNA core draws only 2.6 mA from a 1 V supply voltage. The S11 and S22 of the proposed LNA are less than −10 dB in the four frequency bands. The noise figure is less than 3.5 dB. The power gain is larger than 20 dB.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"45 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":"116698189","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 design of high efficiency class-E power amplifier for wireless power transfer system 一种用于无线电力传输系统的高效e类功率放大器设计
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027207
Hyung-Gu Park, Joonsung Park, Younggun Pu, Seung-ok Lim, Yeon-Kuk Moon, Sun-Hee Kim, Kangyoon Lee
{"title":"A design of high efficiency class-E power amplifier for wireless power transfer system","authors":"Hyung-Gu Park, Joonsung Park, Younggun Pu, Seung-ok Lim, Yeon-Kuk Moon, Sun-Hee Kim, Kangyoon Lee","doi":"10.1109/IMWS2.2011.6027207","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027207","url":null,"abstract":"In this paper, class-E power amplifier (PA) with automatic power control loop and load compensation circuit is presented. The transmitted power is controlled by adjusting the signal applied to the gate of the power control transistor. In addition, a parallel capacitor is also controlled to enhance the efficiency and compensate for the load variation. This chip is implemented in a 0.35 µm BCD technology, and provides the output power control range of 10–30.2 dBm. The maximum power efficiency of the power amplifier is 71.5 %.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"85 5 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":"127434518","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: 8
Green communication network: Large antenna arrays with linear precoders 绿色通信网络:带有线性预编码器的大型天线阵列
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027199
Jinkyu Kang, Namjeong Lee, Joonhyuk Kang
{"title":"Green communication network: Large antenna arrays with linear precoders","authors":"Jinkyu Kang, Namjeong Lee, Joonhyuk Kang","doi":"10.1109/IMWS2.2011.6027199","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027199","url":null,"abstract":"Zero-forcing (ZF) precoder is generally the simple precoder in Mu-MIMO system, but this precoder design has a large complexity by the inverse matrix in a large antenna arrays. In this paper, therefore, we study the linear precoders for the multi-user large antenna arrays and power allocation method to enhance the energy efficiency of the system while meeting quality-of-service (QoS) of each users. When the number of antennas at the transmitter is large, we find that ZF and MMSE precoders are approximately the same in the senses of power allocation and received SINR. Simulation results confirm that the performance of approximated precoders are similar to that of ZF precoder in case of many transmit antennas","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"92 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":"126197574","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
Spectrum sensing techniques for cognitive radio networks: Performance analysis 认知无线电网络的频谱传感技术:性能分析
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027191
Sana Ziafat, W. Ejaz, H. Jamal
{"title":"Spectrum sensing techniques for cognitive radio networks: Performance analysis","authors":"Sana Ziafat, W. Ejaz, H. Jamal","doi":"10.1109/IMWS2.2011.6027191","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027191","url":null,"abstract":"With the advancements in telecommunication, it is generally believed that we are getting short of spectrum. If we look at frequency usage chart it is practically viewed that spectrum usage is concentrated at some portion while some of frequency bands are left unutilized, means actually we have spectrum abundance problem lies in spectrum management policies. Cognitive radio technology provides the efficient way to utilize the electromagnetic spectrum. Physical layer of cognitive radio provides the facility to sense spectrum to determine the spectrum holes. Literature has presented various techniques to sense the spectrum but still there is room for researchers in this field. This paper provides the implementation issues for several spectrum sensing techniques and performance analysis for energy detection, matched filter detection, cyclotationary feature based detection and eigenvalue based detection.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"83 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":"114576230","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: 43
A frequency reconfigurable PIFA using a PIN diode for mobile-WiMAX applications 一种使用PIN二极管的频率可重构PIFA，用于移动wimax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/IMWS2.2011.6027176
Jong-Hyuk Lim, Zhe-jun Jin, T. Yun
{"title":"A frequency reconfigurable PIFA using a PIN diode for mobile-WiMAX applications","authors":"Jong-Hyuk Lim, Zhe-jun Jin, T. Yun","doi":"10.1109/IMWS2.2011.6027176","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027176","url":null,"abstract":"A frequency reconfigurable planar inverted-F antenna (PIFA) using a PIN-diode is presented for mobile-WiMAX applications. The antenna in this study not only alters the frequency bands of mobile-WiMAX but also has a small profile using electro-magnetic coupling in a high dielectric constant substrate. The PIFA consists of a main radiator, an additional parasitic radiator, a coupled radiator, two PIN-diodes, and control circuits. One diode is placed between the main and additional parasitic radiator on the top side, and the other diode is placed between a coupled radiator and ground. Depending upon whether diodes are on or off, the antenna operates over 2.3 to 2.4 GHz, 2.5 to 2.7 GHz, and 3.4 to 3.6 GHz for worldwide mobile-WiMAX bands. All simulated and measured results for the proposed antenna are presented and they show good agreement.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"4 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":"132461925","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: 6
High sampling rate 1 GS/s current mode pipeline ADC in 90 nm Si-CMOS process 高采样率1 GS/s的90 nm Si-CMOS工艺电流模式流水线ADC
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027168
S. Tanifuji, K. Ando, T. Ta, S. Kameda, N. Suematsu, T. Takagi, K. Tsubouchi
{"title":"High sampling rate 1 GS/s current mode pipeline ADC in 90 nm Si-CMOS process","authors":"S. Tanifuji, K. Ando, T. Ta, S. Kameda, N. Suematsu, T. Takagi, K. Tsubouchi","doi":"10.1109/IMWS2.2011.6027168","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027168","url":null,"abstract":"We verifid possibility of high sampling rate and lower power consumption current mode ADC that focused on the most high-speed operation for millimeter-wave broad-band wireless terminal such as wireless personal area network (WPAN). A 5 bit 1 giga-samples-per-second (GS/s) current mode pipeline ADC has been designed and fabricated in 90 nm Si complementary metal oxide semiconductor (CMOS) process. The fabricated ADC has no miscode and increases monotonically. In addition, differential non linearity (DNL) is less than 1.0 and integral non linearity (INL) is less than 1.25, power consumption is 52.8mW on 1 GS/s.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"254 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":"115631529","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
Throughput measurement of IEEE 802.11p based communication systems 基于IEEE 802.11p的通信系统的吞吐量测量
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027180
W. Cho, Sangwoo Lee, H. Oh
{"title":"Throughput measurement of IEEE 802.11p based communication systems","authors":"W. Cho, Sangwoo Lee, H. Oh","doi":"10.1109/IMWS2.2011.6027180","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027180","url":null,"abstract":"IEEE 802.11p standard which is called Wireless Access in Vehicular Environments (WAVE) is one of key factors in vehicular communications especially to support safety applications. In this paper, we measure throughput of IEEE 802.11p based system using the practical system. To measure the throughput, we first build IEEE 802.11p based communication system using FPGA. Then, throughput is measured both with single channel and multi-channel operation. We measure the throughput both indoor and highway environments. Based on the measurement results, some practical implementation issues are discussed.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"33 9 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":"114303587","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
Wireless repeater with adaptive equalizer and phase noise compensator for LTE-Advanced uplink 具有自适应均衡器和相位噪声补偿器的无线中继器用于LTE-Advanced上行链路
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027201
Haeseong Jeong, H. Ryu
{"title":"Wireless repeater with adaptive equalizer and phase noise compensator for LTE-Advanced uplink","authors":"Haeseong Jeong, H. Ryu","doi":"10.1109/IMWS2.2011.6027201","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027201","url":null,"abstract":"In this paper, we propose adaptive equalizer and phase noise compensator in order to effectively cancel feedback channel and phase noise in wireless repeater system based on LTE-Advanced uplink system. In a repeater system, the performance got worse caused by feedback channel and phase noise. In order to cancel feedback channel, we use adaptive equalizer such as NLMS and RLS. And block type pilot is a common pilot pattern in LTE-Advanced uplink standard. So the phase noise compensator exploits block type pilot. Instead of estimating phase noise in other algorithms, the proposed method directly estimates the interference components caused by phase noise and improves estimation accuracy. After that, we reconstruct the interference matrix and suppress the interferences by the inverse matrix method. BER performance of proposed method is satisfied with 12.5dB at 10−4.","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":"128623828","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
Development of FBAR devices based on thermal annealing treatments of nitrogen [N]-incorporated ZnO films 氮化ZnO薄膜热退火制备FBAR器件
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027208
Eunju Lee, Ruirui Zhang, G. Yoon
{"title":"Development of FBAR devices based on thermal annealing treatments of nitrogen [N]-incorporated ZnO films","authors":"Eunju Lee, Ruirui Zhang, G. Yoon","doi":"10.1109/IMWS2.2011.6027208","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027208","url":null,"abstract":"The improvements of the resonance characteristics of the film bulk acoustic wave resonator (FBAR) devices fabricated employing nitrogen [N]-incorporated ZnO films are presented. The N-incorporated ZnO films were sputter-deposited in a mixture of N2O and Ar gases as the reactive and sputtering gases, respectively. Mainly due to the thermal annealing treatments of the N-incorporated ZnO films, the resonance characteristics could be significantly improved. The excellent return loss (S11) of − 63 dB was observed at ∼ 0.6 GHz, which is better than ever reported in this device technology regime.","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":"130662764","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
Digital-RF transmitter for wireless communication in 90nm CMOS 用于无线通信的90纳米CMOS数字射频发射机
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027219
Sunbo Shim, Hyun-Yong Lee, Jang-Hong Choi, Hyun-Kyu Yu, Songcheol Hong
{"title":"Digital-RF transmitter for wireless communication in 90nm CMOS","authors":"Sunbo Shim, Hyun-Yong Lee, Jang-Hong Choi, Hyun-Kyu Yu, Songcheol Hong","doi":"10.1109/IMWS2.2011.6027219","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027219","url":null,"abstract":"A digital-RF transmitter based on direct up-conversion with segmented cell structure is presented. The prototype is designed in 90-nm CMOS process. The implemented transmitter achieves an ACLR1 / ACLR2 of −37.89 dBc / −46.33 dBc for WCDMA and −37.19 dBc / −44.11 dBc for LTE with 5 MHz channel bandwidth.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"117 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":"133753361","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
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