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2007 IEEE/MTT-S International Microwave Symposium最新文献

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Compact Dual-Band Bandpass Filters Using Dual-Mode Resonators 使用双模谐振器的紧凑型双带带通滤波器
2007 IEEE/MTT-S International Microwave Symposium Pub Date : 2007-06-03 DOI: 10.1109/MWSYM.2007.380127
A. Gorur, C. Karpuz
{"title":"Compact Dual-Band Bandpass Filters Using Dual-Mode Resonators","authors":"A. Gorur, C. Karpuz","doi":"10.1109/MWSYM.2007.380127","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380127","url":null,"abstract":"To reduce the size of microstrip dual-band bandpass filters (DBBPFs) by keeping excellent performance, a novel DBBPF configuration is proposed. The novel DBBPFs include two dual-mode resonators based on square loop structure that are located one within the other to remove extra circuit area. The square open-loop stubs connected at the end of feed lines are employed to suppress harmonics. The two DBBPFs with real axis and imaginary axis transmission zeros are designed, fabricated and measured.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131445270","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: 35
Bandwidth Reduction of UTC-TW Photo Detector at High Optical Power Levels 高光功率下UTC-TW光探测器的带宽降低
2007 IEEE/MTT-S International Microwave Symposium Pub Date : 2007-06-03 DOI: 10.1109/MWSYM.2007.380361
A. Madjar, N. Koka, M. Draa, J. Bloch, P. Yu
{"title":"Bandwidth Reduction of UTC-TW Photo Detector at High Optical Power Levels","authors":"A. Madjar, N. Koka, M. Draa, J. Bloch, P. Yu","doi":"10.1109/MWSYM.2007.380361","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380361","url":null,"abstract":"High speed photo detectors are very useful components for high capacity optical communication links, generation of MM and sub-MM wave signals and more. The most promising photo detector for speed is the UTC-TW PD, which was proposed a few years ago. Operation of such devices was reported at frequencies exceeding 300 GHz. Output power and efficiency improve as the optical power is increased, however, when the optical power exceeds the saturation level, substantial reduction is observed in bandwidth. In this paper we present experimental results demonstrating the bandwidth degradation at high optical power, and offer an explanation to this phenomenon, which is backed up by theoretical simulations.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"2006 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127657809","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
A Passive Macromodeling Technique for Nonuniform Transmission Lines based on Delay Extraction via the Theory of Lie Algebra and Lie Groups 基于李代数和李群理论的非均匀传输线延迟提取被动宏观建模技术
2007 IEEE/MTT-S International Microwave Symposium Pub Date : 2007-06-03 DOI: 10.1109/MWSYM.2007.380242
E. Gad
{"title":"A Passive Macromodeling Technique for Nonuniform Transmission Lines based on Delay Extraction via the Theory of Lie Algebra and Lie Groups","authors":"E. Gad","doi":"10.1109/MWSYM.2007.380242","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380242","url":null,"abstract":"This paper presents a new approach to develop a delay-based macromodel for nonuniform transmission line algorithmically. The proposed technique is based on employing results from the Lie group theory to represent the matrix of a nonuniform transmission line with arbitrarily shaped per-unit-length parameter matrices using closed-form expressions. The key advantages of these expressions is that they lend themselves naturally to delay representation.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127807525","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 High-Resolution Z-Transform Tensor Formulation of the FDTD Method FDTD方法的高分辨率z变换张量公式
2007 IEEE/MTT-S International Microwave Symposium Pub Date : 2007-06-03 DOI: 10.1109/MWSYM.2007.380040
Dennis M. Sullivan, J. Nadobny
{"title":"A High-Resolution Z-Transform Tensor Formulation of the FDTD Method","authors":"Dennis M. Sullivan, J. Nadobny","doi":"10.1109/MWSYM.2007.380040","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380040","url":null,"abstract":"A high-resolution FDTD formulation is presented by using a tensor formulation and Z transforms. This method is particularly effective in media with different types of material that vary rapidly. The method is implemented while maintaining the cubic structure of the FDTD paradigm and is applicable for lossless and lossy media. This is accomplished by a 3 x 3 matrix equation to relate the E field to the flux density, a formulation we refer to as the tensor FDTD (TFDTD) method. Z transforms are used for the transformation from the frequency domain to the sample time-domain.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132673704","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 and Measurements of Electrical and Thermal Memory Effects for RF power LDMOS 射频功率LDMOS电记忆效应与热记忆效应的建模与测量
2007 IEEE/MTT-S International Microwave Symposium Pub Date : 2007-06-03 DOI: 10.1109/MWSYM.2007.380245
O. Tornblad, Bin Wu, W. Dai, C. Blair, G. Ma, R. Dutton
{"title":"Modeling and Measurements of Electrical and Thermal Memory Effects for RF power LDMOS","authors":"O. Tornblad, Bin Wu, W. Dai, C. Blair, G. Ma, R. Dutton","doi":"10.1109/MWSYM.2007.380245","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380245","url":null,"abstract":"Accurate modeling of memory effects is important for design of amplifiers with high requirements on linearity. In this work, asymmetries in third order intermodulation distortion products (IM3) were measured for different tone-spacings and compared to simulations. An accurate large-signal model and careful modeling of the test circuit, especially the drain bias feeds is important for correct prediction of sideband asymmetries. Transient thermal measurements were employed to extract a thermal network with two time constants, one for the die and another one for the package. The IM3 asymmetries were found to be dominated by impedances in the output circuit for large tone-spacings; for very small tone-spacings (< 10 kHz), thermal effects have an important influence. The IM3 asymmetries agreed qualitatively well between simulations and measurements as a function of output power for different tone-spacings.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"198 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132911073","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: 7
Improved Finite-Difference Frequency-Domain Scheme for the Analysis of 2-D Photonic Crystals 二维光子晶体分析的改进有限差分频域格式
2007 IEEE/MTT-S International Microwave Symposium Pub Date : 2007-06-03 DOI: 10.1109/MWSYM.2007.380193
Yen-Chung Chiang, Y. Chiou, Hung-chun Chang
{"title":"Improved Finite-Difference Frequency-Domain Scheme for the Analysis of 2-D Photonic Crystals","authors":"Yen-Chung Chiang, Y. Chiou, Hung-chun Chang","doi":"10.1109/MWSYM.2007.380193","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380193","url":null,"abstract":"An improved finite-difference frequency-domain approach was developed for the analysis of two-dimensional photonic crystals. This newly proposed finite-difference scheme can deal with piecewise homogenous structures with slanted interfaces, thus provide the capability to analyze the structures with arbitrary shapes. We utilized this scheme to calculate the band diagrams of 2-D photonic crystals with the square lattice. Only one unit cell area need be calculated with proper periodical boundary conditions. We also demonstrated the convergence behavior to verify the efficiency of adopting the improved scheme.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133277161","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
Novel Nonlinear Model for Rapid Waveform-based Extraction Enabling Accurate High Power PA Design 基于快速波形提取的新型非线性模型，实现精确的大功率放大器设计
2007 IEEE/MTT-S International Microwave Symposium Pub Date : 2007-06-03 DOI: 10.1109/MWSYM.2007.380246
H. Qi, J. Benedikt, P. Tasker
{"title":"Novel Nonlinear Model for Rapid Waveform-based Extraction Enabling Accurate High Power PA Design","authors":"H. Qi, J. Benedikt, P. Tasker","doi":"10.1109/MWSYM.2007.380246","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380246","url":null,"abstract":"This paper presents a new large signal modeling technique that makes substantial extension to the polyharmonic distortion (PHD) model concept. The extension accounts for the influence of traveling wave a2 magnitude presented on the output port on the variation of S and T parameters. The inherent relationship between a2 and the S and T parameters has been illustrated theoretically and experimentally. Automated extraction procedure for the extended PHD model is developed which directly utilizes large-signal waveform data. The resulting model was implemented in ADS showing very good agreement with measurement data on a 100 W LDMOS device.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133653652","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: 15
A Novel Millimeter-Wave Ultra-Wideband Bandpass Filter Using Microstrip Dual-Mode Ring Resonators Loaded with Open Tuning Stubs of Different Lengths 一种新型毫米波超宽带带通滤波器，采用微带双模环形谐振器加载不同长度的开放调谐桩
2007 IEEE/MTT-S International Microwave Symposium Pub Date : 2007-06-03 DOI: 10.1109/MWSYM.2007.380046
Zhewang Ma, Peng Cai, X. Guan, Y. Kobayashi, T. Anada
{"title":"A Novel Millimeter-Wave Ultra-Wideband Bandpass Filter Using Microstrip Dual-Mode Ring Resonators Loaded with Open Tuning Stubs of Different Lengths","authors":"Zhewang Ma, Peng Cai, X. Guan, Y. Kobayashi, T. Anada","doi":"10.1109/MWSYM.2007.380046","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380046","url":null,"abstract":"In this paper, a millimeter-wave ultra-wideband (UWB) bandpass filter is developed by cascading two microstrip dual-mode ring resonators loaded with lambda0/4 and 3lambda0/4 open tuning stubs, respectively. The ring resonators are analyzed by using the even-and odd-mode method, and closed-form formulas are derived to facilitate the design of transmission zeros of these resonators. The filter has a midband frequency of 25.5 GHz and a 3-dB bandwidth of 5 GHz (20%). Due to the multiple transmission zeros produced in both the lower and upper stopbands, the filter exhibits sharp attenuations near the passband and very wide stopbands. Over 13-35 GHz, the Federal Communications Commissions indoor limit is satisfied quite well.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133971928","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: 27
New Ultra-fast Real-time Active Load-pull Measurements for High Speed RF Power Amplifier Design 用于高速射频功率放大器设计的新型超快速实时有源负载-拉力测量
2007 IEEE/MTT-S International Microwave Symposium Pub Date : 2007-06-03 DOI: 10.1109/MWSYM.2007.380536
P. Roblin, S. Doo, X. Cui, G. Jessen, D. Chaillot, J. Strahler
{"title":"New Ultra-fast Real-time Active Load-pull Measurements for High Speed RF Power Amplifier Design","authors":"P. Roblin, S. Doo, X. Cui, G. Jessen, D. Chaillot, J. Strahler","doi":"10.1109/MWSYM.2007.380536","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380536","url":null,"abstract":"To accelerate the speed of RF power amplifier design, a novel ultra-fast real-time active load-pull measurement based on a large signal network analyzer (LSNA) is presented. Real-time load-pull conventionally uses a single-tone excitation at the transistor's output to achieve a time varying load impedance. However this approach still requires multiple measurements at different power levels to map the Smith Chart and determine the optimal load termination. This paper proposes a modulated two-tone excitation method for mapping the Smith Chart in a single 10 ms LSNA measurement. Experiments for the lst and 2nd harmonic demonstrate that this ultra-fast real-time active load-pull permits to identify the optimal load impedance in one measurement.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134006611","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: 14
A Smart Load-Pull Method to Safely Reach Optimal Matching Impedances of Power Transistors 一种安全达到功率晶体管最佳匹配阻抗的智能负载-拉法
2007 IEEE/MTT-S International Microwave Symposium Pub Date : 2007-06-03 DOI: 10.1109/MWSYM.2007.380535
T. Reveyrand, T. Gasseling, D. Barataud, S. Mons, J. Nebus
{"title":"A Smart Load-Pull Method to Safely Reach Optimal Matching Impedances of Power Transistors","authors":"T. Reveyrand, T. Gasseling, D. Barataud, S. Mons, J. Nebus","doi":"10.1109/MWSYM.2007.380535","DOIUrl":"https://doi.org/10.1109/MWSYM.2007.380535","url":null,"abstract":"This paper presents a new method to find optimal load impedances of power transistors with a VNA based Load-Pull measurement setup. Most of load pull setups find the optimal load impedance of a device under test (DUT) for a given available input power. If the optimal impedance must satisfy a trade off between several parameters, such as gain compression or power added efficiency, the measurement procedure may become very time consuming. Our method automatically generates a behavioral model of the DUT. Crossing-informations from this model and measurements lead us to the good impedance optimum with a limited number of iterations.","PeriodicalId":213749,"journal":{"name":"2007 IEEE/MTT-S International Microwave Symposium","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134210117","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: 15
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