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2008 International Conference on Microwave and Millimeter Wave Technology最新文献

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A self-aligned InP/InGaAs/InP DHBT with hexagonal-shaped emitters 具有六角形发射体的自对准InP/InGaAs/InP DHBT
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540451
Yan Zhao, Zheng-Shu Zhang, Jianfeng Gao
{"title":"A self-aligned InP/InGaAs/InP DHBT with hexagonal-shaped emitters","authors":"Yan Zhao, Zheng-Shu Zhang, Jianfeng Gao","doi":"10.1109/ICMMT.2008.4540451","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540451","url":null,"abstract":"InP/InGaAs/InP double heterojunction bipolar transistors (DHBTs) have been successfully fabricated using self-aligned process with hexagonal-shaped emitters. DHBTs with dimensions of 1x10 mum have demonstrated a peak cutoff frequency fT of 170GHz. Typical BVCEO exceeds 8V.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116127637","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
Miniature microstrip isosceles triangular resonator filter 微型微带等腰三角形谐振器滤波器
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540722
Jian‐Kang Xiao, Wu‐Sheng Ji, Hui-fen Huang
{"title":"Miniature microstrip isosceles triangular resonator filter","authors":"Jian‐Kang Xiao, Wu‐Sheng Ji, Hui-fen Huang","doi":"10.1109/ICMMT.2008.4540722","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540722","url":null,"abstract":"Miniaturization is very important for modern communication systems. This paper presents new bandpass filters with low insertion loss and multi-band as well as wide stopband properties, and new bandstop filters with dual-rejectband and sharp attenuation to get nicer frequency selectivity by using miniature microstrip isosceles triangular resonator, and filter coupling schemes are given and discussed. Resonant equations obtained from EM simulation provide a quick, accurate and common way for helping design some of the filters. The designed filters meet the requirement of modern RF/microwave circuits and systems, and can be quite useful in future communication systems.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116458823","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
Performance of differential space-frequency modulation under time-varying frequency-selective fading channels 时变选频衰落信道下差分空频调制的性能
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540882
Binggang Huang, Zhijie Zhou, Wenqiang Zhang, Hao Zhang
{"title":"Performance of differential space-frequency modulation under time-varying frequency-selective fading channels","authors":"Binggang Huang, Zhijie Zhou, Wenqiang Zhang, Hao Zhang","doi":"10.1109/ICMMT.2008.4540882","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540882","url":null,"abstract":"In this paper two differential subcarrier grouping schemes named MSSG and SSSG are firstly analyzed under the same mathematic model. Then we describe two differential space-frequency modulation schemes combining differential space-time modulation and orthogonal frequency division multiplexing. They are F-DSFM in which differential encoding is carried out in frequency direction and T-DSFM in which differential encoding is carried out in time direction. Analysis and simulation results show that F-DSFM is suit for strong time- selective fading channels and T-DSFM is suit for strong frequency-selective fading channels, under time-varying frequency-selective channels subcarrier grouping scheme SSSG is better than MSSG especially for low data rate transmission.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122454213","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 LTCC stripline bandpass filter for ku-band receiver module 一种用于ku波段接收模块的LTCC带状带通滤波器
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540368
Yinqiao Li, Jianhua Ji, Yuanchun Fei, Jianming Zhou
{"title":"A LTCC stripline bandpass filter for ku-band receiver module","authors":"Yinqiao Li, Jianhua Ji, Yuanchun Fei, Jianming Zhou","doi":"10.1109/ICMMT.2008.4540368","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540368","url":null,"abstract":"An embedded low temperature co-fired ceramic (LTCC) bandpass filter (BPF) for Ku-band receiver module is presented in this paper. The measurements of initial fabricated filter exhibit an insertion loss of 2.6 dB and a 2.9 GHz passband with the centre frequency at 16.45 GHz, including the GCPW to stripline transition and RF coaxial connector. Electromagnetic (EM) simulation is employed to optimize the filter response and a GCPW to stripline transition. A quasi coaxial configuration is applied to reducing the influence caused by the transition structure. Improved BPF integrated with the transition shows an insertion loss less than 1.5 dB, a return loss below -17.2 dB in the pass-band and less spurious response in the stop-band by EM simulation.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"453 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123024728","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
Characterization of LTCC substrate up to 100 GHz 高达100ghz的LTCC衬底特性
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540821
S. Adhikari, A. Stelzer, A. Springer, C. Wagner, C. Korden, M. Stadler
{"title":"Characterization of LTCC substrate up to 100 GHz","authors":"S. Adhikari, A. Stelzer, A. Springer, C. Wagner, C. Korden, M. Stadler","doi":"10.1109/ICMMT.2008.4540821","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540821","url":null,"abstract":"This paper deals with the characterization of LTCC substrates up to 100 GHz. Planar transmission lines and resonators are used for characterizing the substrates. Measurement results for the relative permittivity obtained from the investigated structures are presented.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114583908","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
Design considerations on input impedance matching for ultra-wideband low-noise amplifier 超宽带低噪声放大器输入阻抗匹配的设计考虑
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540352
Zhe-Yang Huang, Che-Cheng Huang, Meng-Ping Chen, Yeh-Tai Hung
{"title":"Design considerations on input impedance matching for ultra-wideband low-noise amplifier","authors":"Zhe-Yang Huang, Che-Cheng Huang, Meng-Ping Chen, Yeh-Tai Hung","doi":"10.1109/ICMMT.2008.4540352","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540352","url":null,"abstract":"A multi-stage low-noise amplifier (LNA) with LC-tank load to extend the bandwidth is designed for ultra-wideband (UWB) wireless receiver. The design consists of three LC-tank cascode amplifier and one output buffer and is implemented in 0.18um RF CMOS process. The trade off on noise figure and chip area in low-noise amplifier design is discussed. The two LNA (LC and Res) gives 14.5 dB gain; 7.2 GHz and 7.0 GHz 3 dB bandwidth (3.1-10.3 GHz and 3.1- 10.1 GHz) while consuming 22.8 mW and 23.8 mW through a 1.5 V supply. Over the 3.1 GHz - 10.3 GHz and 3.1 GHz- 10.1 GHz frequency band, a minimum noise figure of 2.6 dB and 6.3 dB and input return loss lower than -8.8 dB and - 6.8 dB have been achieved.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122105183","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
Application of beam decomposition simulation to electromagnetic pulse quasi-beam scattering from one-dimensional rough interface 波束分解模拟在一维粗糙界面电磁脉冲准波束散射中的应用
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540579
Y.C. Ren, L. Guo
{"title":"Application of beam decomposition simulation to electromagnetic pulse quasi-beam scattering from one-dimensional rough interface","authors":"Y.C. Ren, L. Guo","doi":"10.1109/ICMMT.2008.4540579","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540579","url":null,"abstract":"A non-conventional beam decomposition algorithm is proposed in this paper to calculate the temporal scattered field from a moderate one dimensional rough surface. Accurate and easily computational close-form analytic solutions are obtained for Rayleigh pulse quasi-beam.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116853473","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
Characterization of a cryogenically cooled Silicon Germanium HBT amplifier 低温冷却硅锗HBT放大器的特性研究
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540350
A. Cao, K. Liu, S.H. Chen, S. Shi
{"title":"Characterization of a cryogenically cooled Silicon Germanium HBT amplifier","authors":"A. Cao, K. Liu, S.H. Chen, S. Shi","doi":"10.1109/ICMMT.2008.4540350","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540350","url":null,"abstract":"In this paper, the gain and noise performances of a DC-6 GHz microwave amplifier using commercial Silicon Germanium Heterostructure Bipolar Transistor (SiGe HBT) are investigated at different bath temperatures. At room temperature, the two-stage amplifier has a gain of 21 dB and a noise figure of 3.7 dB at 2.62 GHz. When cooled to 70 K, it demonstrates 27 dB gain and 1.5 dB noise figure at the same frequency. The gain and noise figure of another three-stage amplifier at room temperature are 34.5 dB, 3.7 dB at 2.64 GHz, respectively. When cooled to 130 K, the gain goes up to 37.5 dB; when cooled to 170 K, the noise figure goes down to 2.4 dB. The higher gain and better noise figure of this amplifier are obtained when the ambient temperature decreases.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129512587","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
Circularly polarized slot array antenna based on substrate integrated waveguide 基于基板集成波导的圆极化槽阵天线
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540606
Zhijun Chen, W. Hong, Zhenqi Kuai, Jixin Chen, K. Wu
{"title":"Circularly polarized slot array antenna based on substrate integrated waveguide","authors":"Zhijun Chen, W. Hong, Zhenqi Kuai, Jixin Chen, K. Wu","doi":"10.1109/ICMMT.2008.4540606","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540606","url":null,"abstract":"This paper proposed a new approach to implement circularly polarized slot array antenna based on substrate integrated waveguide (SIW), which could be a potential technique in many fields, such as satellite communication etc. The design mainly includes a compact directional coupler, alternating phase power divider and a pair of symmetrical +45deg/-45deg linearly polarized slot array antennas. The slot array is simulated and optimized with full-wave electromagnetic (EM) software and then fabricated with a normal low cost printed circuit board (PCB) process. The measured results show good agreement with simulations. The antenna shows a good performance with the 3 dB axial ratio bandwidth of 9% and the gain of 17.13 dB at 11 GHz.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129810655","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: 20
A UWB antenna with novel L branches on ground for band-notching application 一种用于带陷波应用的新型地面L支路超宽带天线
2008 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2008-04-21 DOI: 10.1109/ICMMT.2008.4540784
Yunlong Cai, Zhenghe Feng
{"title":"A UWB antenna with novel L branches on ground for band-notching application","authors":"Yunlong Cai, Zhenghe Feng","doi":"10.1109/ICMMT.2008.4540784","DOIUrl":"https://doi.org/10.1109/ICMMT.2008.4540784","url":null,"abstract":"In this paper, one L-branch-on-ground structure for band-notching UWB printed-elliptical-slot (PES) antenna is presented. The L branch is connected to the ground other than the antenna element. It is used for cutting the 5.8 GHz band. Compared with the U slot, T branch in the antenna element, L branch on ground is flexible because the point connecting to the ground can change in a big range. Because the antenna is PES antenna, it is compact only 24*29*1 mm3. At the same time, the paper analyzes the electromagnetic fields and presents the electronic fields and magnetic fields are resonating at different zones of the L-branch-on-ground when band-notching.","PeriodicalId":315133,"journal":{"name":"2008 International Conference on Microwave and Millimeter Wave Technology","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129813372","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
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