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The 2012 International Workshop on Microwave and Millimeter Wave Circuits and System Technology最新文献

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Bistatic forward-looking SAR imaging based on two-dimensional principle of stationary phase 基于二维固定相位原理的双基地前视SAR成像
The 2012 International Workshop on Microwave and Millimeter Wave Circuits and System Technology Pub Date : 2012-04-19 DOI: 10.1109/MMWCST.2012.6238129
Jing Li, Shunsheng Zhang, Junfei Chang
{"title":"Bistatic forward-looking SAR imaging based on two-dimensional principle of stationary phase","authors":"Jing Li, Shunsheng Zhang, Junfei Chang","doi":"10.1109/MMWCST.2012.6238129","DOIUrl":"https://doi.org/10.1109/MMWCST.2012.6238129","url":null,"abstract":"Synthetic aperture radar (SAR) techniques are typically used to achieve a high azimuth resolution, but conventional monostatic SAR is not applicable in forward direction because of azimuth ambiguities and poor Doppler resolution. In this paper, we present a new bistatic forward-looking SAR imaging algorithm based on point target reference spectrum using the two-dimensional (2-D) principle of stationary phase to improve the Doppler resolution and to avoid azimuth ambiguities. Based on the bistatic configuration and the novel algorithm, SAR not only can image the forward-looking terrain of the aerocraft, but also plays sufficient role in selflanding and navigation. Finally, simulations are used to validate the proposed spectrum and processing algorithm.","PeriodicalId":150727,"journal":{"name":"The 2012 International Workshop on Microwave and Millimeter Wave Circuits and System Technology","volume":"213 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122822431","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
Modeling of LTCC filter using space-mapping neural network method LTCC滤波器的空间映射神经网络建模
The 2012 International Workshop on Microwave and Millimeter Wave Circuits and System Technology Pub Date : 2012-04-19 DOI: 10.1109/MMWCST.2012.6238174
H. Xia, Z. Q. Xu, P. Wang, L. Jin
{"title":"Modeling of LTCC filter using space-mapping neural network method","authors":"H. Xia, Z. Q. Xu, P. Wang, L. Jin","doi":"10.1109/MMWCST.2012.6238174","DOIUrl":"https://doi.org/10.1109/MMWCST.2012.6238174","url":null,"abstract":"Modeling and analysis, optimization, and synthesis are the issues in design of low temperature co-fired ceramic (LTCC) filters. A multilayer filter is proposed based on the space mapped neuromodeling method. With optimizing and training the mapped relations between 3D structure and equivalent circuit in filter, physical structural characteristics of the filter can be got accurately and rapidly. This proposed model is validated through actual LTCC process. The filter exhibits a 300 MHz passband with the center frequency at 2.45 GHz and an in-band insertion loss of 2.2 dB. Measured results agree well with the high frequency simulation. The modeling method can be used for design on LTCC microwave passive components.","PeriodicalId":150727,"journal":{"name":"The 2012 International Workshop on Microwave and Millimeter Wave Circuits and System Technology","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128678966","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
A compact planar ultra-wideband bandpass filter using cross-coupling SIR and defected ground structure 一种紧凑的平面超宽带带通滤波器，采用交叉耦合SIR和缺陷接地结构
The 2012 International Workshop on Microwave and Millimeter Wave Circuits and System Technology Pub Date : 2012-04-19 DOI: 10.1109/MMWCST.2012.6238175
S. X. Han, W. Tang, G. Y. Fu
{"title":"A compact planar ultra-wideband bandpass filter using cross-coupling SIR and defected ground structure","authors":"S. X. Han, W. Tang, G. Y. Fu","doi":"10.1109/MMWCST.2012.6238175","DOIUrl":"https://doi.org/10.1109/MMWCST.2012.6238175","url":null,"abstract":"In this paper, an ultra-wideband (UWB) band-pass filter (BPF) for wireless communications is proposed. The band-pass filter consists of a stepped impedance resonator (SIR) with input-output cross-coupling. Additional rectangle-slot defected ground structure (DGS) is employed to improve the attenuation performance in the stop band and generate a strong coupling improving the pass-band property of the coupled lines. The resonance frequencies of the degenerate modes can be adjusted easily to satisfy the wanted bandwidth of the BPF. A parallel-coupling feed structure with a cross coupling has been used to generate two transmission zeros at the lower and upper stop-band, which can improve the out-of-band performance. The filter is simulated by 3D EM commercial software HFSS, the simulated results show that the presented BPF covers the frequency range from 2.7-10.2 GHZ defined by |S11| <; -10 dB. Within the bandwidth, the insertion loss is below 2 dB.","PeriodicalId":150727,"journal":{"name":"The 2012 International Workshop on Microwave and Millimeter Wave Circuits and System Technology","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121764308","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
The study of magnetic field azimuthal asymmetry in magnetic injection guns 磁注入枪磁场方位不对称性研究
The 2012 International Workshop on Microwave and Millimeter Wave Circuits and System Technology Pub Date : 2012-04-19 DOI: 10.1109/MMWCST.2012.6238172
Jiang Wei, Luo Yong, Yan Ran
{"title":"The study of magnetic field azimuthal asymmetry in magnetic injection guns","authors":"Jiang Wei, Luo Yong, Yan Ran","doi":"10.1109/MMWCST.2012.6238172","DOIUrl":"https://doi.org/10.1109/MMWCST.2012.6238172","url":null,"abstract":"Azimuthal asymmetry of magnetic field in magnetic injection guns (MIGs) is studied. The stability of MIGs in azimuthal symmetry situation is studied in many papers. But the azimuthal asymmetry in guns hasn't been discussed yet. This paper use CST software to create the 3D model of MIGs and simulate the condition that magnetic field axis transverse offset and azimuthal offset. The result shows the beam performance decrease rapidly when operate in the magnetic field axis offset situation.","PeriodicalId":150727,"journal":{"name":"The 2012 International Workshop on Microwave and Millimeter Wave Circuits and System Technology","volume":"95 2 Suppl 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129031974","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 compact 3dB Ka-band directional coupler 小型3dB ka波段定向耦合器设计
The 2012 International Workshop on Microwave and Millimeter Wave Circuits and System Technology Pub Date : 2012-04-19 DOI: 10.1109/MMWCST.2012.6238197
Song Wen, Qingyuan Wang, Tao Wu, Yicheng Tan
{"title":"Design of a compact 3dB Ka-band directional coupler","authors":"Song Wen, Qingyuan Wang, Tao Wu, Yicheng Tan","doi":"10.1109/MMWCST.2012.6238197","DOIUrl":"https://doi.org/10.1109/MMWCST.2012.6238197","url":null,"abstract":"Based on the theory of Bethe hole coupling, a broadband directional coupler is designed by combining the attenuation factor of coupled waves and the field averaging correction factor. A 3dB directional coupler at Ka-band is designed in this paper. First, according to the required specification, the relevant parameters of equally spaced waveguide directional coupler are preliminarily designed based on the modified Bethe aperture coupling theory. Then in order to get the required specification directional coupler, the distance between two coupling holes and the diameter of the holes are simulated and optimized using the electromagnetic simulation software CST. Finally by folding the coupling waveguide, the length of the directional coupler is reduced by 30% to achieve miniaturization.","PeriodicalId":150727,"journal":{"name":"The 2012 International Workshop on Microwave and Millimeter Wave Circuits and System Technology","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134495400","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: 9
Resource management algorithm based on the minimum covariance mean deviation criterion for phased array radars 基于最小协方差均值偏差准则的相控阵雷达资源管理算法
The 2012 International Workshop on Microwave and Millimeter Wave Circuits and System Technology Pub Date : 2012-04-19 DOI: 10.1109/MMWCST.2012.6238139
Chen Yan, Wang Lei
{"title":"Resource management algorithm based on the minimum covariance mean deviation criterion for phased array radars","authors":"Chen Yan, Wang Lei","doi":"10.1109/MMWCST.2012.6238139","DOIUrl":"https://doi.org/10.1109/MMWCST.2012.6238139","url":null,"abstract":"The problem of resource management in TWS mode for phased array radars is considered here. An optimal model of resource allocation is presented, which selects sensor working mode based on the difference between the desired covariance matrix and that of the actual covariance of each target. A resource management algorithm based on the minimum covariance mean deviation criterion is proposed. The proposed algorithms can control sensor working mode between search and track with optimal resources allocation, and keep all targets in the desired states. Simulation results with absolute trace matrix measurement show that the algorithm based on covariance control can effectively allocate sensor resources with the desired tracking state maintained.","PeriodicalId":150727,"journal":{"name":"The 2012 International Workshop on Microwave and Millimeter Wave Circuits and System Technology","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126687832","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
Multilayered finite-difference method for steady-state thermal analysis of substrate integrated waveguide filter in LTCC LTCC衬底集成波导滤波器稳态热分析的多层有限差分法
The 2012 International Workshop on Microwave and Millimeter Wave Circuits and System Technology Pub Date : 2012-04-19 DOI: 10.1109/MMWCST.2012.6238135
Ang Zhang, Linsheng Wu, Junfa Mao
{"title":"Multilayered finite-difference method for steady-state thermal analysis of substrate integrated waveguide filter in LTCC","authors":"Ang Zhang, Linsheng Wu, Junfa Mao","doi":"10.1109/MMWCST.2012.6238135","DOIUrl":"https://doi.org/10.1109/MMWCST.2012.6238135","url":null,"abstract":"Since the miniaturization of microwave passives will increase power density, it is desirable to do a quick and accurate electro-thermal analysis for component design and optimization. In this paper, the multilayer finite-difference method is extended and migrated into the steady-state electro-thermal characterization of substrate integrated waveguide filter in LTCC, while the method was used to analyze the electromagnetic performance of packages and boards. The distributed heat source in the form of conductor and dielectric losses are derived analytically with the coupled resonator circuit model. Then, the temperature distribution is obtained efficiently by solving a linear matrix equation. Our results have been validated by the simulated ones with commercial FEM simulator.","PeriodicalId":150727,"journal":{"name":"The 2012 International Workshop on Microwave and Millimeter Wave Circuits and System Technology","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116258781","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
Characterization of parasitics from microwave scattering parameters of semiconductor laser diode 半导体激光二极管微波散射参数对寄生特性的表征
The 2012 International Workshop on Microwave and Millimeter Wave Circuits and System Technology Pub Date : 2012-04-19 DOI: 10.1109/MMWCST.2012.6238149
Shang-jian Zhang, Xiaobin Bao, R. Lu, Shuang Liu, Xiao-xia Zhang, Yong Liu
{"title":"Characterization of parasitics from microwave scattering parameters of semiconductor laser diode","authors":"Shang-jian Zhang, Xiaobin Bao, R. Lu, Shuang Liu, Xiao-xia Zhang, Yong Liu","doi":"10.1109/MMWCST.2012.6238149","DOIUrl":"https://doi.org/10.1109/MMWCST.2012.6238149","url":null,"abstract":"We proposed A novel method for characterizing the parasitics of semiconductor laser diode through measuring its scattering parameters. Experiments are designed and performed using our method, and furthermore, how the parasitic element affects the parasitics of semiconductor laser diodes is investigated. Our method only needs reflection coefficient of semiconductor laser diode to be measured, which is simple due to the developed microwave measurement techniques.","PeriodicalId":150727,"journal":{"name":"The 2012 International Workshop on Microwave and Millimeter Wave Circuits and System Technology","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129949467","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 novel capacity loaded dual-mode band-pass filter 一种新型容量负载双模带通滤波器
The 2012 International Workshop on Microwave and Millimeter Wave Circuits and System Technology Pub Date : 2012-04-19 DOI: 10.1109/MMWCST.2012.6238112
Xianrong Zhang, Qingyuan Wang, Wei-Hong Han, Yihao Ren
{"title":"A novel capacity loaded dual-mode band-pass filter","authors":"Xianrong Zhang, Qingyuan Wang, Wei-Hong Han, Yihao Ren","doi":"10.1109/MMWCST.2012.6238112","DOIUrl":"https://doi.org/10.1109/MMWCST.2012.6238112","url":null,"abstract":"This paper introduces a novel capacity loaded dual mode waveguide band-pass filter. A 3-order dual mode waveguide filter has been designed at 8.3GHz, demonstrating a relative bandwidth of 9.6% from 7.9GHz to 8.4GHz with a VSWR as low as 1.3 and out band rejection of -60dB at 7.75GHz. This filter has been simulated, fabricated and tested. A good agreement between simulations and experiments was observed.","PeriodicalId":150727,"journal":{"name":"The 2012 International Workshop on Microwave and Millimeter Wave Circuits and System Technology","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125915961","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
FEM simulation for Lamb wave evaluate the defects of plates 兰姆波的有限元模拟评价了板的缺陷
The 2012 International Workshop on Microwave and Millimeter Wave Circuits and System Technology Pub Date : 2012-04-19 DOI: 10.1109/MMWCST.2012.6238184
Liang Chen, Yanlei Dong, Qingyuan Meng, Wei Liang
{"title":"FEM simulation for Lamb wave evaluate the defects of plates","authors":"Liang Chen, Yanlei Dong, Qingyuan Meng, Wei Liang","doi":"10.1109/MMWCST.2012.6238184","DOIUrl":"https://doi.org/10.1109/MMWCST.2012.6238184","url":null,"abstract":"The experimental method is hard to predict and explain the received Lamb signal of plates due to its dispersive nature. The method to evaluate the depth and defects in plates is investigated theoretically using the finite element method(FEM) in this paper. At first, the theories of Lamb waves in a plate was introduced. Then, the commercial FEM software, ABAQUS EXPLICIT, model lamb wave in plates. The monitor points of healthy plate and defective plate were predicted. The result shows that FEM simulation can effective evaluate the notch by delay time between reflection signal and first echo signal.","PeriodicalId":150727,"journal":{"name":"The 2012 International Workshop on Microwave and Millimeter Wave Circuits and System Technology","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128840410","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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