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2007 International Conference on Microwave and Millimeter Wave Technology最新文献

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Design of Suspended Patch Antenna with EBG Substrate 基于EBG衬底的悬式贴片天线设计
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381326
Yan Wang, Jiawen Sun, Zhenghe Feng
{"title":"Design of Suspended Patch Antenna with EBG Substrate","authors":"Yan Wang, Jiawen Sun, Zhenghe Feng","doi":"10.1109/ICMMT.2007.381326","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381326","url":null,"abstract":"Suspended patch antenna with fork- like EBG substrate is designed for broadband application in this paper. Due to the use of EBG structure, the main-side lobe ratio of the antenna is increased by 3.3 dB. Simulation and experiments have been carried out to verify the improvement in the antenna performance. The use of fork-like EBG structure also leads to an easy way to design the entire structure.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123837435","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
Simulation calculation for Ka-band second-harmonic Gyro-TWT Using a helical corrugation waveguide 采用螺旋波纹波导的ka波段二次谐波陀螺行波管的仿真计算
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381444
W. Lei, Zhou Xu, Ming Li, Xingfan Yang
{"title":"Simulation calculation for Ka-band second-harmonic Gyro-TWT Using a helical corrugation waveguide","authors":"W. Lei, Zhou Xu, Ming Li, Xingfan Yang","doi":"10.1109/ICMMT.2007.381444","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381444","url":null,"abstract":"The eigenwave dispersion of 8 mm 3-folded helical corrugation waveguide is simulated using CSL software. The electron beam 80 kV and main magnetic field 0.67 L are given by the eigenwave dispersion for Ka-band Gyro-LWL using helical waveguide. The beam-wave interaction procedure is simulated using a PIC code, in which LE11 and LE21 coupling mode transform and a right-rotating large-orbit electron bunch are obtained. The maximal output power is about 42.5 kW and the maximal gain is about 29.3 dB in 35 GHz. The 3 dB bandwidth is about 8.7% from 33 GHz to 35.8 GHz.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122161234","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 LNA Design for WCDMA Application In 0.18um CMOS Process 基于0.18um CMOS工艺的WCDMA应用LNA设计
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381467
Xiao-Dong Wang, Jia-you Song
{"title":"A LNA Design for WCDMA Application In 0.18um CMOS Process","authors":"Xiao-Dong Wang, Jia-you Song","doi":"10.1109/ICMMT.2007.381467","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381467","url":null,"abstract":"This paper presents a design and optimization method for low noise amplifiers (LNAs), based on the minimization of the noise figure for a given power consumption. The LNA design is realized through the 0.18 mum CMOS process with the operating frequency at 2.14GHz. Simulation results show that the amplifier draws 5.36 mA from a given 1.8 V supply voltage while keeping the input/output impedance matched to 50 Omega. Furthermore, the circuit behaviors with 0.655 dB noise figure, gain of 16.64 dB, 1 dB compression point of about -12 dBm and IIP3 of 6 dBm.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122248286","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
Analysis and Simulation on Spectral Phase-Encoded OCDMA System 频谱相位编码OCDMA系统的分析与仿真
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381505
Bing Long, Wu Pan
{"title":"Analysis and Simulation on Spectral Phase-Encoded OCDMA System","authors":"Bing Long, Wu Pan","doi":"10.1109/ICMMT.2007.381505","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381505","url":null,"abstract":"This paper analyzes the temporal behavior of pseudo-random code and the effects on a spectral phase-encoded time-spreading OCDMA System. A spectral phase-encoded time-spreading optical code division multiple access system designed by Optiwave's Optisystem was demonstrated. The system's performance was simulated under the different pseudo-random phase codes. The OCDMA system's performance would be better if the phase codes have equal amount of 1 and -1 and improved by increasing phase code length. The system performance is evaluated by the Bit Error Rates (BER).","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125911992","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
Application of Second-Order Accurate FDTD at Dielectric Interfaces in Three Dimension Case 二阶精确时域有限差分法在三维介质界面上的应用
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381358
H. Ding, Q. Chu
{"title":"Application of Second-Order Accurate FDTD at Dielectric Interfaces in Three Dimension Case","authors":"H. Ding, Q. Chu","doi":"10.1109/ICMMT.2007.381358","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381358","url":null,"abstract":"The second order accurate FDTD techniques at the dielectric interface is applied to the case of three dimension through the integral form of Maxwell's curl equations in the nonuniform grids and Taylor series extending of continuous fields component over finite volumes including the interface. The numerical results demonstrate that the proposed algorithm can effectively improve the accuracy.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129946886","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
Memory Effect Pre-compensation for Wideband RF Power Amplifiers Using FIR-Based Weak Nonlinear Filters 基于fir的弱非线性滤波器对宽带射频功率放大器的记忆效应预补偿
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381475
Taijun Liu, Yan Ye, Xingbin Zeng, S. Boumaiza, Jiaming He, F. Ghannouchi
{"title":"Memory Effect Pre-compensation for Wideband RF Power Amplifiers Using FIR-Based Weak Nonlinear Filters","authors":"Taijun Liu, Yan Ye, Xingbin Zeng, S. Boumaiza, Jiaming He, F. Ghannouchi","doi":"10.1109/ICMMT.2007.381475","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381475","url":null,"abstract":"This paper proposes an effective memory effect pre-compensation technique, which is based on a weak nonlinear finite impulse response (FIR) filter. This weak nonlinear FIR filter comprises two FIRs in parallel with different inputs. The performance evaluation of this pre-compensation technique is carried out on an L-band push-pull GaAs FET 45-dBm peak-envelope-power amplifier using 3GPP-FDD WCDMA signals. The validation results in spectrum domain demonstrate noticeable superiority of the proposed weak nonlinear FIR filter in suppressing the memory effects in comparison to a traditional FIR filter.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129973126","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
The RCS computation of targets on the rough sea surface 粗糙海面上目标的RCS计算
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381380
Xu Yun-xue, Gong Shu-xi, Zhang Peng-fei
{"title":"The RCS computation of targets on the rough sea surface","authors":"Xu Yun-xue, Gong Shu-xi, Zhang Peng-fei","doi":"10.1109/ICMMT.2007.381380","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381380","url":null,"abstract":"The physical optic algorithm is applied in the simple and fast calculation of the RCS of the target over the sea surface with different wind speeds. The rough sea surface with different wind speeds is described by a simple empirical formula. The \"fourth-path model\" is invoked in a first-order approximation of the half-space contribution to the scattering mechanisms. The calculated results show that the rough sea surface with different wind speeds affects the RCS of the target.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129599541","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
MER performance analysis of M-QAM-OFDM with Wiener phase noise 含维纳相位噪声的M-QAM-OFDM的MER性能分析
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381517
Yin Wang, Zhaowu Chen, Ke Gong
{"title":"MER performance analysis of M-QAM-OFDM with Wiener phase noise","authors":"Yin Wang, Zhaowu Chen, Ke Gong","doi":"10.1109/ICMMT.2007.381517","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381517","url":null,"abstract":"The orthogonal frequency-division multiplexing (OFDM) technology has been proposed as the standard for broadcasting both audio and video digital signals and for wideband wireless communication systems (e.g.,WLAN). However, the performance of the OFDM scheme is severely affected by the phase noise of the oscillators at the receiver. The modulation error rate (MER) is widely applied as a measure of OFDM signals' performance which integrates impairments such as nonlinearity, IQ imbalance, phase noise as well as Doppler frequency shift. In this paper, we investigate the effects induced on the OFDM signals by Wiener phase noise, and propose analytical equations for MER calculation. Theoretical results show perfect agreement with those obtained by simulation and they can be used to predict the MER degradation of OFDM system and choose suitable oscillators with no need to run extensive simulations.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126365589","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
Ka-Band Wilkinson Power Divider Based on Chip Resistor 基于片式电阻的ka波段威尔金森功率分压器
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381449
Xu Hongjie, Z. Yonghong, Fan Yong
{"title":"Ka-Band Wilkinson Power Divider Based on Chip Resistor","authors":"Xu Hongjie, Z. Yonghong, Fan Yong","doi":"10.1109/ICMMT.2007.381449","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381449","url":null,"abstract":"In this paper, a design method of Ka-band Wilkinson power divider based on the detail model of real lumped chip resistor is presented, and this model is got from its geometric size and electric property. The structure of this power divider and the formulas used to determine the design parameters have been given. Experimental results show that the insertion loss is about 4.7 dB with return loss below -13 dB, and the isolation between two output ports is better than -25 dB over 28.3 GHz~33.8 GHz.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129206556","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 of Microstrip Diplexer with Wide Band-stop 宽频阻微带双工器的设计
2007 International Conference on Microwave and Millimeter Wave Technology Pub Date : 2007-04-18 DOI: 10.1109/ICMMT.2007.381419
Xinwei Chen, Wenmei Zhang, Chunhui Yao
{"title":"Design of Microstrip Diplexer with Wide Band-stop","authors":"Xinwei Chen, Wenmei Zhang, Chunhui Yao","doi":"10.1109/ICMMT.2007.381419","DOIUrl":"https://doi.org/10.1109/ICMMT.2007.381419","url":null,"abstract":"This paper introduces a three-port microstrip diplexer. The diplexer is made up of two band-pass filters based on symmetric microstrip electromagnetic band gap (EBG) structure and two 1/4 lambda micro-strips (lambda is the guiding wavelength at the resonant frequency of every filter.) The result of simulation shows that the micro-strip diplexer has excellent performances of lower insertion loss and higher suppression band-stop. Also, the second harmonic falls into the stopband and can be suppressed directly.","PeriodicalId":409971,"journal":{"name":"2007 International Conference on Microwave and Millimeter Wave Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2007-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121135531","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: 19
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