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2012 Second Conference on Millimeter-Wave and Terahertz Technologies (MMWaTT)最新文献

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Resonant cavity enhanced quantum ring terahertz photodetector 谐振腔增强量子环太赫兹光电探测器
2012 Second Conference on Millimeter-Wave and Terahertz Technologies (MMWaTT) Pub Date : 2012-12-01 DOI: 10.1109/MMWATT.2012.6532153
F. Alihosseini, V. Ahmadi, A. Mir
{"title":"Resonant cavity enhanced quantum ring terahertz photodetector","authors":"F. Alihosseini, V. Ahmadi, A. Mir","doi":"10.1109/MMWATT.2012.6532153","DOIUrl":"https://doi.org/10.1109/MMWATT.2012.6532153","url":null,"abstract":"In this paper, based on effective mass method, we study the absorption characteristics of InAs/GaAs quantum ring photodetector in terahertz range. To enhance the absorption in active region of this photodetector we propose a metallic Fabry-Perot resonant cavity with Au nanoslits as top reflector and Au film as the bottom mirror. It is shown that with this structure at frequency of ~7.1 THz, absorption can be enhanced about 55 times.","PeriodicalId":297799,"journal":{"name":"2012 Second Conference on Millimeter-Wave and Terahertz Technologies (MMWaTT)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122712494","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
Interference control using polarization in directive 60 GHz mesh networks 定向60ghz网状网络中偏振干扰控制
2012 Second Conference on Millimeter-Wave and Terahertz Technologies (MMWaTT) Pub Date : 2012-12-01 DOI: 10.1109/MMWATT.2012.6532156
M. Rasekh, F. Farzaneh
{"title":"Interference control using polarization in directive 60 GHz mesh networks","authors":"M. Rasekh, F. Farzaneh","doi":"10.1109/MMWATT.2012.6532156","DOIUrl":"https://doi.org/10.1109/MMWATT.2012.6532156","url":null,"abstract":"In this paper a directive mesh network operating in the 60 GHz unlicensed band is considered for backhaul support for a small cell mobile network in an urban environment and interference between network links is analyzed. It is observed that while non-line-of-sight stations are adequately isolated by antenna directivity, interference can affect link performance in links that fall in line with each other, namely, line-of-sight links. Seeing as back-to-back links may occur in the proposed network between stations situated within long straight streets, the resulting interference can cause a decrease in network capacity by preventing simultaneous transmission on links. Here, the use of orthogonal polarizations is proposed as a method for controlling interference in LOS links allowing for simultaneous function of a higher number of links and thus better utilization of channel resources and ultimately achieving higher network throughput.","PeriodicalId":297799,"journal":{"name":"2012 Second Conference on Millimeter-Wave and Terahertz Technologies (MMWaTT)","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116812318","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
Plasmonic nanostructures for increasing the efficiency of terahertz large-area photomixers 用于提高太赫兹大面积光混合器效率的等离子体纳米结构
2012 Second Conference on Millimeter-Wave and Terahertz Technologies (MMWaTT) Pub Date : 2012-12-01 DOI: 10.1109/MMWATT.2012.6532155
A. Eshaghi, M. Shahabadi
{"title":"Plasmonic nanostructures for increasing the efficiency of terahertz large-area photomixers","authors":"A. Eshaghi, M. Shahabadi","doi":"10.1109/MMWATT.2012.6532155","DOIUrl":"https://doi.org/10.1109/MMWATT.2012.6532155","url":null,"abstract":"Enhancement of the optical power transmission to photoconductor-based large-area photomixers is investigated and numerically analyzed in this work. It is shown that a nanoscale periodic structure as the interdigitated electrodes can increase the power transmission to the active layer of terahertz (THz) photomixers by a factor of 4. This increase of the optical power transmission, which is facilitated by proper designing of the plasmonic structure formed by metallic interdigitated electrodes, increases the conversion efficiency of THz photomixers.","PeriodicalId":297799,"journal":{"name":"2012 Second Conference on Millimeter-Wave and Terahertz Technologies (MMWaTT)","volume":"286 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123726638","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
Wide-band, stop-band and multi-band metamaterial filter design in Terahertz frequencies 太赫兹频率下的宽频带、阻频带和多频带超材料滤波器设计
2012 Second Conference on Millimeter-Wave and Terahertz Technologies (MMWaTT) Pub Date : 2012-12-01 DOI: 10.1109/MMWATT.2012.6532161
R. Basiry, H. Abiri, A. Yahaghi
{"title":"Wide-band, stop-band and multi-band metamaterial filter design in Terahertz frequencies","authors":"R. Basiry, H. Abiri, A. Yahaghi","doi":"10.1109/MMWATT.2012.6532161","DOIUrl":"https://doi.org/10.1109/MMWATT.2012.6532161","url":null,"abstract":"In this work metamaterials (MTMs) are applied for optimal design of filters in terahertz frequencies. These MTM filters are designed for different applications. The random hill climbing (RHC) optimization method is used to find optimal structures. Periodic method of moments (PMOM) is applied to calculate the fitness function of the resulted structures from RHC optimizer. The PMOM simulation results are compared with Ansoft HFSS12 CAD outcomes. They confirm the validity and accuracy of the written PMOM code. The computation time of the PMOM code versus HFSS CAD is extremely low which assures the efficiency of the PMOM for the planar periodic structure analysis.","PeriodicalId":297799,"journal":{"name":"2012 Second Conference on Millimeter-Wave and Terahertz Technologies (MMWaTT)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124234541","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
Design of a kerr effect based terahertz all-optical switch using metallic nanocomposite metamaterial structure 基于克尔效应的金属纳米复合超材料太赫兹全光开关设计
2012 Second Conference on Millimeter-Wave and Terahertz Technologies (MMWaTT) Pub Date : 2012-12-01 DOI: 10.1109/MMWATT.2012.6532154
M. Hajizadegan, M. Sakhdari, V. Ahmadi
{"title":"Design of a kerr effect based terahertz all-optical switch using metallic nanocomposite metamaterial structure","authors":"M. Hajizadegan, M. Sakhdari, V. Ahmadi","doi":"10.1109/MMWATT.2012.6532154","DOIUrl":"https://doi.org/10.1109/MMWATT.2012.6532154","url":null,"abstract":"In this paper, we propose a new feasible split ring resonators (SRR) metamaterial structure that can be used for all-optical switch in terahertz frequency range. We use metallic nanocomposite as nonlinear material for Kerr effect based switch that makes it low threshold and high speed switch. Our results show a tunable frequency switch because of SRR metamaterial structure dimensions and metallic nanocomposite parameters.","PeriodicalId":297799,"journal":{"name":"2012 Second Conference on Millimeter-Wave and Terahertz Technologies (MMWaTT)","volume":"106 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131055248","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
Scattering from coated cracks for sub-millimeter wave applications by KP method 基于KP方法的亚毫米波应用中涂层裂纹散射
2012 Second Conference on Millimeter-Wave and Terahertz Technologies (MMWaTT) Pub Date : 2012-12-01 DOI: 10.1109/MMWATT.2012.6532160
B. Ghalamkari, A. Tavakoli, M. Dehmollaian
{"title":"Scattering from coated cracks for sub-millimeter wave applications by KP method","authors":"B. Ghalamkari, A. Tavakoli, M. Dehmollaian","doi":"10.1109/MMWATT.2012.6532160","DOIUrl":"https://doi.org/10.1109/MMWATT.2012.6532160","url":null,"abstract":"The Kobayashi Potential (KP) is an analytical technique used for solving mixed boundary geometrical problems. In this paper scattering by a 2D dielectric filled rectangular crack on a ground plane, coated by a dielectric layer for TM case is studied using KP method. The fields in three distinctive regions of the geometry are expressed in terms of Bessel eigenfunctions. The problem is reduced to a system of equations involving summations with an infinite number of unknown coefficients. By applying Weber-Schafheitlin discontinuous integrals, the summations truncated with high numerical accuracy. We employ finite element method (FEM) for validation of our method. Finally, the influence of coating dielectric layer is investigated on the scattered field. This technique could open practical means for non destructive testing in Terahertz frequency region.","PeriodicalId":297799,"journal":{"name":"2012 Second Conference on Millimeter-Wave and Terahertz Technologies (MMWaTT)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115228963","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
Low noise amplifier linearization for near millimeter wave band applications 近毫米波波段应用的低噪声放大器线性化
2012 Second Conference on Millimeter-Wave and Terahertz Technologies (MMWaTT) Pub Date : 2012-12-01 DOI: 10.1109/MMWATT.2012.6532165
N. Seiedhosseinzadeh, A. Nabavi
{"title":"Low noise amplifier linearization for near millimeter wave band applications","authors":"N. Seiedhosseinzadeh, A. Nabavi","doi":"10.1109/MMWATT.2012.6532165","DOIUrl":"https://doi.org/10.1109/MMWATT.2012.6532165","url":null,"abstract":"In this paper, an improved post linearization technique is presented for high frequency low noise amplifiers (LNAs). It employs two auxiliary diode-connected NMOS-PMOS transistors with a resistor and a capacitor which increases the linearity while partially compensates the gain reduction. This technique improves the IIP3 more than 7 dB by reducing the third-order nonlinearity coefficient of output current. The proposed method has been implemented on a two-stage LNA consisting of a common-source stage and a cascode stage. This LNA has been simulated in a 0.18μm RF CMOS technology consuming only 13.9 mW from a single 1.8-V power supply.","PeriodicalId":297799,"journal":{"name":"2012 Second Conference on Millimeter-Wave and Terahertz Technologies (MMWaTT)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115307835","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: 4
Design and implementation of a mm-wave receiver with offset PLL architecture 偏置锁相环结构毫米波接收机的设计与实现
2012 Second Conference on Millimeter-Wave and Terahertz Technologies (MMWaTT) Pub Date : 2012-12-01 DOI: 10.1109/MMWATT.2012.6532166
M. Bahmanian, G. Moradi
{"title":"Design and implementation of a mm-wave receiver with offset PLL architecture","authors":"M. Bahmanian, G. Moradi","doi":"10.1109/MMWATT.2012.6532166","DOIUrl":"https://doi.org/10.1109/MMWATT.2012.6532166","url":null,"abstract":"In this paper, the details of design and the analysis of a 38GHz mm-wave receiver with offset PLL will be discussed and the methodology of design is studied. All subsystems and overall circuit are simulated using the commercial software. The results show the capability of the mm-wave receiver with offset PLL architecture.","PeriodicalId":297799,"journal":{"name":"2012 Second Conference on Millimeter-Wave and Terahertz Technologies (MMWaTT)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114042291","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
Design and hybrid analysis of an integrated 60 GHz active phased array transmitter using a power amplifier and 360° phase shifter 采用功率放大器和360°移相器的集成60 GHz有源相控阵发射机的设计与混合分析
2012 Second Conference on Millimeter-Wave and Terahertz Technologies (MMWaTT) Pub Date : 2012-12-01 DOI: 10.1109/MMWATT.2012.6532157
H. Aliakbari, A. Abdipour, A. Mohammadi, R. Mirzavand
{"title":"Design and hybrid analysis of an integrated 60 GHz active phased array transmitter using a power amplifier and 360° phase shifter","authors":"H. Aliakbari, A. Abdipour, A. Mohammadi, R. Mirzavand","doi":"10.1109/MMWATT.2012.6532157","DOIUrl":"https://doi.org/10.1109/MMWATT.2012.6532157","url":null,"abstract":"The overall circuit designing of one path phased array transmitter consisting of 90 nm CMOS integrated power amplifier and passive phase shifter for the first three channels in 60 GHz band, is described. The performance investigation is based on a hybrid analysis and optimization. It consists of both electromagnetic (Method of Moments (MOM)) analysis for improving the accuracy of the models in this frequency and circuit analysis (Harmonic Balance (HB) - Circuit Envelope (CE)) in order to evaluating the nonlinearity behavior of the transmitter, for the passive and active parts, respectively. This procedure resulted in an acceptable performance of the average insertion gain of 13dB, peak PAE of 12.5%, P1dB of 7.5dBm, and 360° continues phase shifting for one path transmitter, which is desirable for 60 GHz phased array front ends. Furthermore the output constellation and spectrum satisfy the single carrier (SC) IEEE 802.15.3c standard.","PeriodicalId":297799,"journal":{"name":"2012 Second Conference on Millimeter-Wave and Terahertz Technologies (MMWaTT)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131646786","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
Design of optimum grid array antenna in 60GHz frequency band 60GHz频段最佳网格阵列天线设计
2012 Second Conference on Millimeter-Wave and Terahertz Technologies (MMWaTT) Pub Date : 2012-12-01 DOI: 10.1109/MMWATT.2012.6532158
S. A. Delkhah, A. Abdipour, A. Mohammadi
{"title":"Design of optimum grid array antenna in 60GHz frequency band","authors":"S. A. Delkhah, A. Abdipour, A. Mohammadi","doi":"10.1109/MMWATT.2012.6532158","DOIUrl":"https://doi.org/10.1109/MMWATT.2012.6532158","url":null,"abstract":"A new high gain microstrip grid array antenna for 60-GHz wireless personal area network application, is designed using electromagnetics full-wave simulations. An amplitude tapering technique on some radiating elements is used to obtain peak gain flatness in the frequency band. The simulation results indicate that the grid array antenna has an impedance bandwidth (|S11|<;-10dB) nearly from 57GHz to 66GHz and maximum gain of about 14dBi at 60GHz.","PeriodicalId":297799,"journal":{"name":"2012 Second Conference on Millimeter-Wave and Terahertz Technologies (MMWaTT)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126862633","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
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