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ICMMT 2000. 2000 2nd International Conference on Microwave and Millimeter Wave Technology Proceedings (Cat. No.00EX364)最新文献

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Modeling of microwave power absorption in high temperature superconductor 高温超导体中微波功率吸收的建模
ICMMT 2000. 2000 2nd International Conference on Microwave and Millimeter Wave Technology Proceedings (Cat. No.00EX364) Pub Date : 2000-09-14 DOI: 10.1109/ICMMT.2000.895649
M. Tripathy, G. Srivastava, M. Pyée, R. Talhi
{"title":"Modeling of microwave power absorption in high temperature superconductor","authors":"M. Tripathy, G. Srivastava, M. Pyée, R. Talhi","doi":"10.1109/ICMMT.2000.895649","DOIUrl":"https://doi.org/10.1109/ICMMT.2000.895649","url":null,"abstract":"This paper compares different phenomenological models (i.e. two fluid model, three fluid model and modified two fluid model) for microwave properties of high temperature superconductors with the experimental results of silver doped BSCCO samples. The modified two fluid model is seen to have a good agreement with the measurements in a wide temperature range and different silver doping levels (0-20 wt%) in samples.","PeriodicalId":354225,"journal":{"name":"ICMMT 2000. 2000 2nd International Conference on Microwave and Millimeter Wave Technology Proceedings (Cat. No.00EX364)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114698348","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 semi-disc microstrip patch antenna with enhanced bandwidth 一种新型增强带宽的半圆盘微带贴片天线
ICMMT 2000. 2000 2nd International Conference on Microwave and Millimeter Wave Technology Proceedings (Cat. No.00EX364) Pub Date : 2000-09-14 DOI: 10.1109/ICMMT.2000.895690
Wang Yajun, Lee Ching Kwang
{"title":"A novel semi-disc microstrip patch antenna with enhanced bandwidth","authors":"Wang Yajun, Lee Ching Kwang","doi":"10.1109/ICMMT.2000.895690","DOIUrl":"https://doi.org/10.1109/ICMMT.2000.895690","url":null,"abstract":"A novel probe-fed semi-disc patch antenna is presented. A single shorting-pin is introduced to substantially reduce the antenna dimensions with improved VSWR (<2:1) bandwidth. The characteristics and variations of resonant frequency and impedance bandwidth with different antenna thickness are given.","PeriodicalId":354225,"journal":{"name":"ICMMT 2000. 2000 2nd International Conference on Microwave and Millimeter Wave Technology Proceedings (Cat. No.00EX364)","volume":"61 10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131871215","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
Direct downconversion active antennas for modulation and demodulation 用于调制和解调的直接下变频有源天线
ICMMT 2000. 2000 2nd International Conference on Microwave and Millimeter Wave Technology Proceedings (Cat. No.00EX364) Pub Date : 2000-09-14 DOI: 10.1109/ICMMT.2000.895671
G. Ma, P. Hall, P. Gardner, M. Hajizn
{"title":"Direct downconversion active antennas for modulation and demodulation","authors":"G. Ma, P. Hall, P. Gardner, M. Hajizn","doi":"10.1109/ICMMT.2000.895671","DOIUrl":"https://doi.org/10.1109/ICMMT.2000.895671","url":null,"abstract":"In this paper, two active antennas with modulation and demodulation functions are introduced. A patch antenna integrated with two Schottky diodes is implemented to fulfil single sideband modulation and I&Q demodulation. A variation of this configuration can carry out double sideband modulation with carrier suppression and homodyne detection. Moreover, some parameters of the active antennas, such as conversion loss and radiation pattern are measured. The active antennas have potential use for direct-conversion radio transceivers in digital communication.","PeriodicalId":354225,"journal":{"name":"ICMMT 2000. 2000 2nd International Conference on Microwave and Millimeter Wave Technology Proceedings (Cat. No.00EX364)","volume":"292 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133206998","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
A new-generation radiosonde in L band L波段新一代探空仪
ICMMT 2000. 2000 2nd International Conference on Microwave and Millimeter Wave Technology Proceedings (Cat. No.00EX364) Pub Date : 2000-09-14 DOI: 10.1109/ICMMT.2000.895783
Chen Yaqin, H. Jingyu, Feng Zhenghe, Fan Yanhu
{"title":"A new-generation radiosonde in L band","authors":"Chen Yaqin, H. Jingyu, Feng Zhenghe, Fan Yanhu","doi":"10.1109/ICMMT.2000.895783","DOIUrl":"https://doi.org/10.1109/ICMMT.2000.895783","url":null,"abstract":"A new-generation radiosonde working in L band for weather measurement is presented. The radiosonde consists of a phase-locked FM receiver mainly constructed of ICs and a FM/FSK transmitter implemented with the combination of microstrips and surface mounted components. Although the cost is low, excellent performance, especially narrow bandwidth, high sensitivity and stability under drastic change of temperature are achieved. Field experiments show that the new radiosonde may entirely replace the pulsed type of radiosonde currently being used in P.R. China to obtain more reliable meteorological information and save more spectrum resources.","PeriodicalId":354225,"journal":{"name":"ICMMT 2000. 2000 2nd International Conference on Microwave and Millimeter Wave Technology Proceedings (Cat. No.00EX364)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121924830","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
Solving the propagation of electromagnetic wave in a simple two-dimensional inhomogeneous media based on symplectic geometric theory 基于辛几何理论求解简单二维非均匀介质中电磁波的传播
ICMMT 2000. 2000 2nd International Conference on Microwave and Millimeter Wave Technology Proceedings (Cat. No.00EX364) Pub Date : 2000-09-14 DOI: 10.1109/ICMMT.2000.895758
Z. Jin, Wu Xianliang, Fu Biao, Tang Jin, L. Shixiong
{"title":"Solving the propagation of electromagnetic wave in a simple two-dimensional inhomogeneous media based on symplectic geometric theory","authors":"Z. Jin, Wu Xianliang, Fu Biao, Tang Jin, L. Shixiong","doi":"10.1109/ICMMT.2000.895758","DOIUrl":"https://doi.org/10.1109/ICMMT.2000.895758","url":null,"abstract":"A new symplectic geometrical high-frequency approximation method for solving the propagation of electromagnetic waves in the two-dimensional inhomogeneous media is presented in this paper. The propagating caustic problem of electromagnetic wave is translated into non-caustic problem by the coordinate transform on the symplectic space. The high-frequency approximation solution that includes the caustic region is obtained with the method combining the geometrical optics. The drawback that the solution in the caustic region can't be obtained with geometrical optics is overcome by this method. The results are compared with those obtained by finite elements method; it proves to be satisfactory.","PeriodicalId":354225,"journal":{"name":"ICMMT 2000. 2000 2nd International Conference on Microwave and Millimeter Wave Technology Proceedings (Cat. No.00EX364)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122177030","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 9 W C-band MMICs combined power amplifier 一个9w c波段mmic组合功率放大器
ICMMT 2000. 2000 2nd International Conference on Microwave and Millimeter Wave Technology Proceedings (Cat. No.00EX364) Pub Date : 2000-09-14 DOI: 10.1109/ICMMT.2000.895657
Chen Tangsheng, Shen Ya, Li Fuxiao, Chen Xiaojian
{"title":"A 9 W C-band MMICs combined power amplifier","authors":"Chen Tangsheng, Shen Ya, Li Fuxiao, Chen Xiaojian","doi":"10.1109/ICMMT.2000.895657","DOIUrl":"https://doi.org/10.1109/ICMMT.2000.895657","url":null,"abstract":"The design, fabrication and performance of a two-stage C-band MMIC power amplifier is reported in this paper. The MMIC contains monolithic input and interstage matching. The matching at the output is realized by using off-chip circuitry. The amplifier delivers more than 36.6 dBm output power with 18.6 dB gain and 34% power added efficiency (PAE) across the band of 5.2-5.8 GHz with a CW signal applied. A 2-chip combined power amplifier demonstrates output power of 39.6 dBm (9 W), with 18.6 dB gain and 32% PAE over the same band.","PeriodicalId":354225,"journal":{"name":"ICMMT 2000. 2000 2nd International Conference on Microwave and Millimeter Wave Technology Proceedings (Cat. No.00EX364)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122270717","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
Inverse method for analyzing the antenna and RCS measurement precision 天线和RCS测量精度的逆分析方法
ICMMT 2000. 2000 2nd International Conference on Microwave and Millimeter Wave Technology Proceedings (Cat. No.00EX364) Pub Date : 2000-09-14 DOI: 10.1109/ICMMT.2000.895742
Hong Jiacai, H. Yu
{"title":"Inverse method for analyzing the antenna and RCS measurement precision","authors":"Hong Jiacai, H. Yu","doi":"10.1109/ICMMT.2000.895742","DOIUrl":"https://doi.org/10.1109/ICMMT.2000.895742","url":null,"abstract":"The compact antenna test range (CATR) is one of system for precise antenna and RCS measurement. The main characters of CATR are the field magnitude ripple and the phase ripple in the quite zone. In this paper, using the plane wave spectrum (PWS) and generalized microwave network, we have deduced the quantitative relationship between the antenna (or RCS) measurement precision and the quality of CATR quiet zone. This method is called the inverse method (IM). Using the inverse method, the antenna and RCS measurement errors can be corrected, and the measurement precision can be improved. According to the calculation result, the RCS measurement errors brought over by the ripples in quite zone is larger than the antenna measurement errors under the same conditions.","PeriodicalId":354225,"journal":{"name":"ICMMT 2000. 2000 2nd International Conference on Microwave and Millimeter Wave Technology Proceedings (Cat. No.00EX364)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125640711","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
A X-band five-bit MMIC phase shifter 一个x波段5位MMIC移相器
ICMMT 2000. 2000 2nd International Conference on Microwave and Millimeter Wave Technology Proceedings (Cat. No.00EX364) Pub Date : 2000-09-14 DOI: 10.1109/ICMMT.2000.895656
Shen Ya, Chen Tangsheng, Lin Lanfeng, Chen Xiaojian, Lin Jinting
{"title":"A X-band five-bit MMIC phase shifter","authors":"Shen Ya, Chen Tangsheng, Lin Lanfeng, Chen Xiaojian, Lin Jinting","doi":"10.1109/ICMMT.2000.895656","DOIUrl":"https://doi.org/10.1109/ICMMT.2000.895656","url":null,"abstract":"Design, fabrication and performance of a X-band 5-bit GaAs MMIC phase shifter are described. It exhibits low RMS phase error (<1.7 degrees), good VSWR (<1.3), low insertion loss (<8.3 dB) and low insertion loss variation (</spl plusmn/0.5 dB) for all thirty-two phase states over the entire operational bandwidth in the 9.2/spl sim/10.3 GHz frequency range.","PeriodicalId":354225,"journal":{"name":"ICMMT 2000. 2000 2nd International Conference on Microwave and Millimeter Wave Technology Proceedings (Cat. No.00EX364)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130155110","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
An approach to judging stabilization oscillation range of an ultra broad band YIG-tuned FET oscillator 一种判断超宽带yig调谐FET振荡器稳定振荡范围的方法
ICMMT 2000. 2000 2nd International Conference on Microwave and Millimeter Wave Technology Proceedings (Cat. No.00EX364) Pub Date : 2000-09-14 DOI: 10.1109/ICMMT.2000.895608
Zhao Shuqiang, Pu Wei
{"title":"An approach to judging stabilization oscillation range of an ultra broad band YIG-tuned FET oscillator","authors":"Zhao Shuqiang, Pu Wei","doi":"10.1109/ICMMT.2000.895608","DOIUrl":"https://doi.org/10.1109/ICMMT.2000.895608","url":null,"abstract":"In this paper, the equivalent circuit of an ultra broad band YIG-tuned FET oscillator (YTO) using dual coupling YIG resonators is briefly presented, and the calculation results for the oscillation properties for the CAD optimization design of the oscillator have been given in an impedance circle-diagram. It can be seen from the stabilization-circles analyses that the stabilization oscillation range for the theoretical design of the YTO is in accordance with experimental results of the YTO.","PeriodicalId":354225,"journal":{"name":"ICMMT 2000. 2000 2nd International Conference on Microwave and Millimeter Wave Technology Proceedings (Cat. No.00EX364)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129806506","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
Moisture measurement by dielectric ring resonator in microwave range 微波范围内介电环形谐振器的水分测量
ICMMT 2000. 2000 2nd International Conference on Microwave and Millimeter Wave Technology Proceedings (Cat. No.00EX364) Pub Date : 2000-09-14 DOI: 10.1109/ICMMT.2000.895769
Zhangyou Chen, S. Okamura
{"title":"Moisture measurement by dielectric ring resonator in microwave range","authors":"Zhangyou Chen, S. Okamura","doi":"10.1109/ICMMT.2000.895769","DOIUrl":"https://doi.org/10.1109/ICMMT.2000.895769","url":null,"abstract":"This paper presents a study on the measurement of material moisture in the microwave range. The dielectric ring resonator is utilized as the model for both theoretical analysis and measurement. It denotes that the TM/sub 011/ mode has high accuracy with its measurable range of moisture up to 40% (dry basis), and the HE/sub 211/ mode has a measurable range of more than 100% with acceptable accuracy.","PeriodicalId":354225,"journal":{"name":"ICMMT 2000. 2000 2nd International Conference on Microwave and Millimeter Wave Technology Proceedings (Cat. No.00EX364)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127595720","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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