发布求助
文献互助 智能选刊 最新文献

1999 IEEE MTT-S International Topical Symposium on Technologies for Wireless Applications (Cat. No. 99TH8390)最新文献

筛选
英文 中文
A reconfigurable topology scheme for a wireless ad-hoc community network 一种无线自组织社区网络的可重构拓扑方案
1999 IEEE MTT-S International Topical Symposium on Technologies for Wireless Applications (Cat. No. 99TH8390) Pub Date : 1999-02-21 DOI: 10.1109/MTTTWA.1999.755122
M. Kawai, K. Gyoda, M. Nozaki
{"title":"A reconfigurable topology scheme for a wireless ad-hoc community network","authors":"M. Kawai, K. Gyoda, M. Nozaki","doi":"10.1109/MTTTWA.1999.755122","DOIUrl":"https://doi.org/10.1109/MTTTWA.1999.755122","url":null,"abstract":"This paper discusses a reconfigurable wireless network topology scheme for the purpose of adapting flexibly to unpredictably variable and unevenly distributed traffic and also utilizing network resources efficiently over radio frequencies, for application to a wireless ad-hoc community network. This paper presents the principle, control method and effects for the scheme and shows the experimental results of trial systems in which the fundamental functions of the scheme have been implemented.","PeriodicalId":261988,"journal":{"name":"1999 IEEE MTT-S International Topical Symposium on Technologies for Wireless Applications (Cat. No. 99TH8390)","volume":"2018 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114203084","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
Modeling diversity reception over narrowband fixed wireless channels 窄带固定无线信道分集接收建模
1999 IEEE MTT-S International Topical Symposium on Technologies for Wireless Applications (Cat. No. 99TH8390) Pub Date : 1998-05-28 DOI: 10.1049/EL:19980716
D. Michelson, V. Erceg, L. Greenstein
{"title":"Modeling diversity reception over narrowband fixed wireless channels","authors":"D. Michelson, V. Erceg, L. Greenstein","doi":"10.1049/EL:19980716","DOIUrl":"https://doi.org/10.1049/EL:19980716","url":null,"abstract":"A complete first-order statistical characterization of two-branch diversity reception over narrowband fixed wireless channels can be given in terms of just five channel parameters: the average path gains and Ricean K-factors for each branch and the complex envelope correlation coefficient between the time-varying parts of the two path gains. Propagation measurements collected in typical suburban environments have shown that each of these parameters, or its logarithm, is close to Gaussian. Accordingly, the set may be cast as a five-element vector of jointly random Gaussian processes which are completely specified by the means, standard variations, and mutual correlation coefficients of the five parameters.","PeriodicalId":261988,"journal":{"name":"1999 IEEE MTT-S International Topical Symposium on Technologies for Wireless Applications (Cat. No. 99TH8390)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134132132","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: 24
The correlation between inter-modulation distortion of GaAs MESFETs and ungated recess width GaAs mesfet的互调失真与非门控凹槽宽度的关系
1999 IEEE MTT-S International Topical Symposium on Technologies for Wireless Applications (Cat. No. 99TH8390) Pub Date : 1900-01-01 DOI: 10.1109/MTTTWA.1999.755126
Y. Tkachenko, D. Bartle, C. Wei, P. Dicarlo
{"title":"The correlation between inter-modulation distortion of GaAs MESFETs and ungated recess width","authors":"Y. Tkachenko, D. Bartle, C. Wei, P. Dicarlo","doi":"10.1109/MTTTWA.1999.755126","DOIUrl":"https://doi.org/10.1109/MTTTWA.1999.755126","url":null,"abstract":"Inter-modulation distortion of GaAs MESFET discrete and MMIC PA devices was found to be effected by the width of the ungated recess. Devices with ungated recess width in excess of 105 nm exhibit soft gain compression and out-of-spec inter-modulation performance. Degraded linearity is manifested in worse IM3 and significantly different IM5 dependence on the output power, whereas soft gain compression leads to premature power saturation, smaller power gain and power-added efficiency. Good correlation between the loadpull results, waveform measurements and 2-stage linear power amplifier performance data was obtained. This work provides insight into a critical device parameter for optimum performance of high linearity amplifier applications.","PeriodicalId":261988,"journal":{"name":"1999 IEEE MTT-S International Topical Symposium on Technologies for Wireless Applications (Cat. No. 99TH8390)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130598591","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
Broadband proximity-coupled and dual polarised microstrip antenna for DTH reception 用于DTH接收的宽带近耦合和双极化微带天线
1999 IEEE MTT-S International Topical Symposium on Technologies for Wireless Applications (Cat. No. 99TH8390) Pub Date : 1900-01-01 DOI: 10.1109/MTTTWA.1999.755166
E. Schwenzfeier
{"title":"Broadband proximity-coupled and dual polarised microstrip antenna for DTH reception","authors":"E. Schwenzfeier","doi":"10.1109/MTTTWA.1999.755166","DOIUrl":"https://doi.org/10.1109/MTTTWA.1999.755166","url":null,"abstract":"A novel antenna concept for DTH (direct to home) reception contains a parabolic reflector and a LNB (low noise block converter) in microstrip technology. The horn of the conventional LNB is replaced by a microstrip antenna. This contribution concentrates on the design and realisation of broadband proximity-coupled antennas for dual linear polarisation at 12 GHz. The simulated bandwidth of 22% was proved by measurement.","PeriodicalId":261988,"journal":{"name":"1999 IEEE MTT-S International Topical Symposium on Technologies for Wireless Applications (Cat. No. 99TH8390)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116493417","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
A planar wideband circularly polarized antenna for satellite communications 一种用于卫星通信的平面宽带圆极化天线
1999 IEEE MTT-S International Topical Symposium on Technologies for Wireless Applications (Cat. No. 99TH8390) Pub Date : 1900-01-01 DOI: 10.1109/MTTTWA.1999.755164
D. Filipovic
{"title":"A planar wideband circularly polarized antenna for satellite communications","authors":"D. Filipovic","doi":"10.1109/MTTTWA.1999.755164","DOIUrl":"https://doi.org/10.1109/MTTTWA.1999.755164","url":null,"abstract":"A planar wideband circularly polarized antenna for Ku-band satellite communications is presented. The antenna consists of an array of bow-tie antennas printed on a thin dielectric substrate that is fed through a corporate feed divider network. The array is backed by a low dielectric substrate coated with a metallized ground plane to provide one-sided radiation. This configuration is sandwiched by three low dielectric substrates placed directly on top of the array. A metallization pattern layer defined on each substrate converts the linear polarization to circular polarization. The final configuration offers a 21% axial-ratio bandwidth in a robust, low-cost, easy to manufacture, planar structure.","PeriodicalId":261988,"journal":{"name":"1999 IEEE MTT-S International Topical Symposium on Technologies for Wireless Applications (Cat. No. 99TH8390)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133949364","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
Analysis and practical performance of a difference frequency technique for improving the multicarrier IMD performance of RF amplifiers 一种提高射频放大器多载波IMD性能的差频技术的分析与实用性能
1999 IEEE MTT-S International Topical Symposium on Technologies for Wireless Applications (Cat. No. 99TH8390) Pub Date : 1900-01-01 DOI: 10.1109/MTTTWA.1999.755128
M. Modeste, D. Budimir, M. R. Moazzam, C. Aitchison
{"title":"Analysis and practical performance of a difference frequency technique for improving the multicarrier IMD performance of RF amplifiers","authors":"M. Modeste, D. Budimir, M. R. Moazzam, C. Aitchison","doi":"10.1109/MTTTWA.1999.755128","DOIUrl":"https://doi.org/10.1109/MTTTWA.1999.755128","url":null,"abstract":"This paper presents a difference frequency technique for IMD improvement in power amplifiers. The technique is based on feeding the original two tone signals and a signal which frequency is the difference frequency of the fundamental signals in to the amplifier. Theory, simulation and practical measurement are presented. The result of the related experiment which gave a two tones measurement of more than 40 dB reduction in the level of the third order IMD is reported.","PeriodicalId":261988,"journal":{"name":"1999 IEEE MTT-S International Topical Symposium on Technologies for Wireless Applications (Cat. No. 99TH8390)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132544972","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: 28
A low-cost direct microwave QAM modulator using silicon MMIC technology 采用硅MMIC技术的低成本直接微波QAM调制器
1999 IEEE MTT-S International Topical Symposium on Technologies for Wireless Applications (Cat. No. 99TH8390) Pub Date : 1900-01-01 DOI: 10.1109/MTTTWA.1999.755142
A. Mohammadi, S. Kumar
{"title":"A low-cost direct microwave QAM modulator using silicon MMIC technology","authors":"A. Mohammadi, S. Kumar","doi":"10.1109/MTTTWA.1999.755142","DOIUrl":"https://doi.org/10.1109/MTTTWA.1999.755142","url":null,"abstract":"A new method to realize a direct microwave QAM modulator is discussed. The architecture uses SPDT switches and pin diode reflection attenuators to realize a QAM modulator. The attenuators use pin diodes in a forward bias condition to overcome the speed limitation. This slew architecture provides a high speed QAM modulator, and its implementation using Si-MMIC results a cost efficient and high performance modulator for wireless systems.","PeriodicalId":261988,"journal":{"name":"1999 IEEE MTT-S International Topical Symposium on Technologies for Wireless Applications (Cat. No. 99TH8390)","volume":"265 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116824170","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 C-band low noise amplifier for satellite communications 一种用于卫星通信的c波段低噪声放大器
1999 IEEE MTT-S International Topical Symposium on Technologies for Wireless Applications (Cat. No. 99TH8390) Pub Date : 1900-01-01 DOI: 10.1109/MTTTWA.1999.755155
K. Benboudjema, K. Ali
{"title":"A C-band low noise amplifier for satellite communications","authors":"K. Benboudjema, K. Ali","doi":"10.1109/MTTTWA.1999.755155","DOIUrl":"https://doi.org/10.1109/MTTTWA.1999.755155","url":null,"abstract":"A hybrid C-band low noise amplifier (LNA) has been developed for satellite communication applications, using a pseudomorphic HEMT technology with a gate-length of 0.25 /spl mu/m. The three-stage LNA has achieved, a noise figure of 1.9 dB with an associated gain of 24.5 dB at ambient room temperature over a 3.7-4.2 GHz frequency range. The output third order intercept point [1P3] of 18.5 dBm was obtained with the two tone spacing of 5 MHz. The amplifier dissipates 95 mW from a 2 V supply.","PeriodicalId":261988,"journal":{"name":"1999 IEEE MTT-S International Topical Symposium on Technologies for Wireless Applications (Cat. No. 99TH8390)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131342044","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
Power amplifier MMIC for microwave digital radio 用于微波数字收音机的功率放大器
1999 IEEE MTT-S International Topical Symposium on Technologies for Wireless Applications (Cat. No. 99TH8390) Pub Date : 1900-01-01 DOI: 10.1109/MTTTWA.1999.755168
Huan-Shang Tsai, P. Roux, J.L. Giguet, Young-Kai Chen
{"title":"Power amplifier MMIC for microwave digital radio","authors":"Huan-Shang Tsai, P. Roux, J.L. Giguet, Young-Kai Chen","doi":"10.1109/MTTTWA.1999.755168","DOIUrl":"https://doi.org/10.1109/MTTTWA.1999.755168","url":null,"abstract":"Microwave digital radio has received much attention in recent years because it offers broad bandwidth which can fulfill the ever increase demand for high-speed voice and data networks. In this paper, we discuss the design of a broadband (10 GHz to 16 GHz) power amplifier MMIC, which will replace the current hybrid solution in order to reduce the cost and size of the RF front end in the microwave digital radio system.","PeriodicalId":261988,"journal":{"name":"1999 IEEE MTT-S International Topical Symposium on Technologies for Wireless Applications (Cat. No. 99TH8390)","volume":"203 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121160872","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
Prediction of fractional-N spurs for UHF PLL frequency synthesizers 超高频锁相环频率合成器的分数n杂散预测
1999 IEEE MTT-S International Topical Symposium on Technologies for Wireless Applications (Cat. No. 99TH8390) Pub Date : 1900-01-01 DOI: 10.1109/MTTTWA.1999.755124
D. Butterfield, B. Sun
{"title":"Prediction of fractional-N spurs for UHF PLL frequency synthesizers","authors":"D. Butterfield, B. Sun","doi":"10.1109/MTTTWA.1999.755124","DOIUrl":"https://doi.org/10.1109/MTTTWA.1999.755124","url":null,"abstract":"Fast settling-time added to the already conflicting requirements of narrow channel spacing and low phase noise lead to fractional-N divider techniques for PLL synthesizers. We analyze discrete \"beat-note\" spurious levels from arbitrary modulus divide sequences including those from classic accumulator methods. The results are compared with measurements.","PeriodicalId":261988,"journal":{"name":"1999 IEEE MTT-S International Topical Symposium on Technologies for Wireless Applications (Cat. No. 99TH8390)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123619772","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
下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信