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2014 IEEE International Wireless Symposium (IWS 2014)最新文献

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RF LDMOS power transistor for multi-carrier GSM base station 多载波GSM基站用射频LDMOS功率晶体管
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864254
Fucheng Hou, Yaohui Zhang
{"title":"RF LDMOS power transistor for multi-carrier GSM base station","authors":"Fucheng Hou, Yaohui Zhang","doi":"10.1109/IEEE-IWS.2014.6864254","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864254","url":null,"abstract":"In this paper, we present an optimized RF LDMOS transistor structure based on modified CMOS technology. The drift region is improved to reduce the change rate of the output capacitor of the transistor and ameliorate the linearity of power amplifier. Hot Carrier Injection (HCI) is alleviated by reducing the electric field at the gate edge near the drain by optimizing the field plate and the doping distribution of the channel. Excellent characterizations are achieved for Multi-Carrier GSM Base Station applications with linear gain of 20dB at 960MHz, high efficiency of 75% and 52dBm of saturated power. A load pull system is set up to test the optimum impedance points of the transistor, and the RF performance is evaluated by designing internal matching network and a demonstration board.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"193 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121540045","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: 11
Effects of rain attenuation on ray-tracing prediction in urban microcellular environment at 20 GHz 降雨衰减对20 GHz城市微蜂窝环境射线追踪预报的影响
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864247
Jie-Jing Sun, Li-xin Guo, Zhongyu Liu, J. Ge
{"title":"Effects of rain attenuation on ray-tracing prediction in urban microcellular environment at 20 GHz","authors":"Jie-Jing Sun, Li-xin Guo, Zhongyu Liu, J. Ge","doi":"10.1109/IEEE-IWS.2014.6864247","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864247","url":null,"abstract":"In this study, an improved ray tracing algorithm for the use of the uniform theory of diffraction and geometrical optics was employed because of its high efficiency and reliable prediction accuracy. Rain attenuation was considered in this method, and relevant simulation was carried out at 20 GHz. The results showed that the effect of rain attenuation on the prediction results was quite obvious at this frequency.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122706141","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
14 Gbps on-off keying modulator and demodulator for D-band communication 用于d波段通信的14gbps开关键控调制器和解调器
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864208
M. Bao, Jingjing Chen, R. Kozhuharov, H. Zirath
{"title":"14 Gbps on-off keying modulator and demodulator for D-band communication","authors":"M. Bao, Jingjing Chen, R. Kozhuharov, H. Zirath","doi":"10.1109/IEEE-IWS.2014.6864208","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864208","url":null,"abstract":"An on-off keying (OOK) modulator and demodulator operating at carrier frequency from 100 GHz to 150 GHz are designed and manufactured in a 0.25 μm InP DHBT Technology. The modulator is based on a switch controlled frequency quadrupler, which is driven by input data and a sinusoid signal source. A power detector consisting of a 4-way power divider and four identical active power detector units is proposed as an OOK demodulator. Combining the output of the detector units enables reducing of the ripple at the output by suppressing the 1st, the 2nd, and the 3rd harmonics due to the phase cancellation. The modulator and demodulator are characterized by on-wafer measurements. As an integrated OOK modulator and demodulator, high data rate transmission up to 14 Gbps is demonstrated. At data rate of 13 Gbps, BER<;10-12 and BER<;1.7×10-5 for 2-7-1 PRBS at the carrier frequency 120 GHz and 150 GHz are obtained, respectively. In addition, the modulator and demodulator achieve state-of-the-art power/energy efficiency. The frequency quadrupler has the highest power efficiency of 10% among published quadruplers. The proposed demodulator also exhibits the lowest energy/bit of 1.1 pJ/bit. Total DC power consumption of the modulator and demodulator is 62 mW.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114185798","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
Frequency synthesizer for digital satellite radio receiving systems 数字卫星无线电接收系统的频率合成器
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864267
Juergen Roeber, Andreas Baenisch, T. Ussmueller, G. Fischer, R. Weigel
{"title":"Frequency synthesizer for digital satellite radio receiving systems","authors":"Juergen Roeber, Andreas Baenisch, T. Ussmueller, G. Fischer, R. Weigel","doi":"10.1109/IEEE-IWS.2014.6864267","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864267","url":null,"abstract":"This paper describes the design and verification of phase lock loop (PLL) components within the framework of a front-end for digital satellite radio diversity reception. First, the functionality of the implemented PLL is described by a block diagram. Second, individual PLL components are presented and analysed. Altogether a voltage controlled oscillator (VCO), an automatic amplitude control (AAC), a buffer stage, a TSCP logic as well as a DCVSL-R high-speed by-two-divider, a multi-modulus divider (MMD), and a phase-frequency detector are developed. The frequency tuning range of the PLL is between 4.34 and 4.70 GHz and hence the VCO tuning range has to be around 4 to 5 GHz. Beyond this, the VCO's post-layout phase noise is -100.50 dBc/Hz at 1 MHz under nominal environmental conditions and the post-layout yield analysis predicts 99.773%. Additionally, the VCO and the AAC are connected. Due to that additional AAC feedback circuit, the current consumption as well as the VCO output amplitude decrease. The overall system simulation shows the settling process of the PLL for the tri-state and the five-state mode of the PFD. Finally the VCO performance is compared with other state-of-the-art LC-VCOs.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115857521","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
Four-arm sinuous antenna for direction finding system 测向系统用四臂正弦天线
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864258
H. S. Zhang, K. Xiao, L. Qiu, S. Chai
{"title":"Four-arm sinuous antenna for direction finding system","authors":"H. S. Zhang, K. Xiao, L. Qiu, S. Chai","doi":"10.1109/IEEE-IWS.2014.6864258","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864258","url":null,"abstract":"This paper proposes a feeding method for four-arm sinuous antenna, which is realized by using microstrip printed board welded on metal pyramid. It is an effective way to solve the problem of input impedance transformation and broadband balun. Then a four-arm sinuous antennas working at 0.4GHz to 2GHz is given, the measured results of VSWR and radiation pattern show that the feed form is reliable and effective, and the antenna has excellent performance in the operating bandwidth.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116642887","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
500 GHz 3-dB directional coupler with 38-dB isolation incorporating right-handed/left-handed coupled-line in CMOS 0.13 μm 500 GHz 3db定向耦合器，38 db隔离，采用CMOS 0.13 μm的右手/左手耦合线
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864263
GuangFu Li, Hsien-Shun Wu, Ching-Kuang C. Tzuang
{"title":"500 GHz 3-dB directional coupler with 38-dB isolation incorporating right-handed/left-handed coupled-line in CMOS 0.13 μm","authors":"GuangFu Li, Hsien-Shun Wu, Ching-Kuang C. Tzuang","doi":"10.1109/IEEE-IWS.2014.6864263","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864263","url":null,"abstract":"A CMOS 3-dB directional coupler incorporating the right-handed/left-handed coupled-line on the perforated ground is presented. The composite coupled-line is constructed by the unit cell with a period of 18 μm. The guiding characteristics of the right-handed and left-handed transmission lines on the perforated ground are theoretically extracted to assist in designing the directional coupler with high directivity. The coupler prototype, which consists of seven cells, is designed at 500 GHz, and implemented by using 0.13 μm 1P8M CMOS technology. The scattering analyses show that the proposed coupler has a -3 dB coupling between 430 GHz and 570 GHz with a highest isolation of 38 dB at 482 GHz.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"10 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116795580","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
GaN HEMT structure modeling and characterization techniques GaN HEMT结构建模与表征技术
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864186
C. Wen
{"title":"GaN HEMT structure modeling and characterization techniques","authors":"C. Wen","doi":"10.1109/IEEE-IWS.2014.6864186","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864186","url":null,"abstract":"A novel device model has been established for GaN HEMT, featuring polarization induced, positive/ negative charge pairs. Unconventional techniques are found necessary to characterize, and to optimize the design of the polar semiconductor based device for transient (current collapse) free, efficient, microwave power amplification in communication systems.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115605002","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
Modeling waveform generator of 77 GHz automotive radar for multi-target detection 77 GHz汽车雷达多目标探测波形发生器建模
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864229
Q. N. Nguyen, Hyongi Yoo, F. Bien
{"title":"Modeling waveform generator of 77 GHz automotive radar for multi-target detection","authors":"Q. N. Nguyen, Hyongi Yoo, F. Bien","doi":"10.1109/IEEE-IWS.2014.6864229","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864229","url":null,"abstract":"This paper describes a waveform generator for 77 GHz automotive radar systems based on a fractional N-Phase Locked Loop (N-PLL) with a third-order delta-sigma (ΔΣ). A control unit is used to control the ΔΣ modulator to vary the output frequency. The behaviour of the generation is simulated in Simulink and ten output frequencies with a slight difference are generated. The proposed generator has the potential to generate a very small frequency difference with the flexibility in frequency shift, which is a good choice in limited bandwidth cases like automotive radar systems.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123573709","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
Novel antenna using substrate integrated waveguide for passive millimeter-wave focal plane array imaging 新型基板集成波导无源毫米波焦平面阵列成像天线
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864279
Wen Wang, A. Fathy, Xuetian Wang
{"title":"Novel antenna using substrate integrated waveguide for passive millimeter-wave focal plane array imaging","authors":"Wen Wang, A. Fathy, Xuetian Wang","doi":"10.1109/IEEE-IWS.2014.6864279","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864279","url":null,"abstract":"In this work, a novel planar high-gain antipodal linearly tapered slot antenna (ALTSA) using microstrip-to-substrate integrated waveguide (SIW) transition has been developed and demonstrated. The antenna is well designed to be feed element of an 8mm focal plane array (FPA) imaging system. A wideband SIW feeding structure is used for its implementation at mm-wave frequencies. The return loss of the proposed antenna is better than -12dB at Ka-band, meanwhile, the E-plane side lobe is almost 14dB low; which drops to 40dB down after being reflected by the parabolic antenna when placed on its focal plane. The array arrangement on focal plane is optimized for multiple overlapping beams to cover wider scene. Generally, there are good agreements between simulation and measurement results. The ALTSA antenna is an excellent candidate for passive millimeter-wave (PMMW) focal plane array imaging system.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121076940","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 full Ka-band waveguide-based spatial power-combining amplifier using e-plane anti-phase probes 采用e平面反相探头的全ka波段波导空间功率组合放大器
2014 IEEE International Wireless Symposium (IWS 2014) Pub Date : 2014-03-24 DOI: 10.1109/IEEE-IWS.2014.6864257
K. Yin, J. P. Xu, Zhe Chen
{"title":"A full Ka-band waveguide-based spatial power-combining amplifier using e-plane anti-phase probes","authors":"K. Yin, J. P. Xu, Zhe Chen","doi":"10.1109/IEEE-IWS.2014.6864257","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2014.6864257","url":null,"abstract":"A full Ka-band solid-state power amplifier has been presented and designed using a waveguide-based spatial power-combining technique based on E-plane anti-phase probes. The power divider/combiner employed in this design provides not only a high power-combining efficiency over a full waveguide bandwidth, but also efficient heat sinking for the active power devices. A simple design approach for the power divider/combiner has been developed. The measured insertion loss of the power divider/combiner is less than 0.25dB across the 26-40GHz band. The measured output saturated power of the solidstate amplifier is higher than 27.5dbm over the entire Ka-band. The obtained power-combining efficiency is from 83% to 90% in this frequency band. These results indicate that the proposed power-combining scheme is suitable for implementation of low cost, broadband power amplifiers operating at millimeter wave frequency.","PeriodicalId":225547,"journal":{"name":"2014 IEEE International Wireless Symposium (IWS 2014)","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116350736","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: 11
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