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2003 33rd European Microwave Conference, 2003最新文献

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Experimental Results of Testing Interferences in 2.4 GHz ISM Band 2.4 GHz ISM频段干扰测试实验结果
2003 33rd European Microwave Conference, 2003 Pub Date : 2003-10-01 DOI: 10.1109/EUMA.2003.340838
T. Keller, J. Modelski
{"title":"Experimental Results of Testing Interferences in 2.4 GHz ISM Band","authors":"T. Keller, J. Modelski","doi":"10.1109/EUMA.2003.340838","DOIUrl":"https://doi.org/10.1109/EUMA.2003.340838","url":null,"abstract":"In the paper some experimental results of interference measurements between Bluetooth and IEEE 802.11 devices are presented. For the measurements special hardware test environment was designed. Both systems utilize the unlicensed 2.4 GHz ISM band, so the potential problem of interferences is very important. In the paper negative effects of the interferences for the system performance are presented. Methods for improving coexistence and for avoiding interferences are also discussed.","PeriodicalId":156210,"journal":{"name":"2003 33rd European Microwave Conference, 2003","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130801466","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
Planar Microstrip Diplexer for a Multifunctional Antenna 用于多功能天线的平面微带双工器
2003 33rd European Microwave Conference, 2003 Pub Date : 2003-10-01 DOI: 10.1109/EUMA.2003.341112
L. Marcaccioli, G. Olbrich, S. Lindenmeier, R. Sorrentino
{"title":"Planar Microstrip Diplexer for a Multifunctional Antenna","authors":"L. Marcaccioli, G. Olbrich, S. Lindenmeier, R. Sorrentino","doi":"10.1109/EUMA.2003.341112","DOIUrl":"https://doi.org/10.1109/EUMA.2003.341112","url":null,"abstract":"A compact wide-band microstrip diplexer working in the 0.9÷2.5 GHz frequency range is presented. This component is a key part of the feeding network of a multifunctional antenna, working at five frequency bands associated to terrestrial and satellite radio services. By using interdigital capacitors in conjunction with the stepped impedance technique, very good results in terms of compactness and performances have been obtained. An unconventional arrangement of the filters has led to a further reduction of the dimensions.","PeriodicalId":156210,"journal":{"name":"2003 33rd European Microwave Conference, 2003","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132824869","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 Enhanced PIN Diode Model for Voltage-Controlled PIN Diode Attenuator 一种用于电压控制PIN二极管衰减器的增强PIN二极管模型
2003 33rd European Microwave Conference, 2003 Pub Date : 2003-10-01 DOI: 10.1109/EUMA.2003.340932
Byung-Jun Jang, I. Yom, S. Lee
{"title":"An Enhanced PIN Diode Model for Voltage-Controlled PIN Diode Attenuator","authors":"Byung-Jun Jang, I. Yom, S. Lee","doi":"10.1109/EUMA.2003.340932","DOIUrl":"https://doi.org/10.1109/EUMA.2003.340932","url":null,"abstract":"This paper presents an enhanced PIN diode model for the voltage-controlled PIN diode attenuator. The proposed model operates well when it is used in the voltage-controlled mode as well as current-controlled mode, and it is a simple and straightforward model, since the PN junction diode of this model has the same I-V curve as that of the PIN diode. The validity of the proposed model is demonstrated by the measured data.","PeriodicalId":156210,"journal":{"name":"2003 33rd European Microwave Conference, 2003","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133319049","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
Design and Development of a Beamforming Subunit in a Conformal Array Antenna System 共形阵列天线系统波束形成子单元的设计与研制
2003 33rd European Microwave Conference, 2003 Pub Date : 2003-10-01 DOI: 10.1109/EUMA.2003.341057
N. Athanasopoulos, A. Garetsos, N. Uzunoglu, J. Kanellopoulos
{"title":"Design and Development of a Beamforming Subunit in a Conformal Array Antenna System","authors":"N. Athanasopoulos, A. Garetsos, N. Uzunoglu, J. Kanellopoulos","doi":"10.1109/EUMA.2003.341057","DOIUrl":"https://doi.org/10.1109/EUMA.2003.341057","url":null,"abstract":"The implementation of a Beamforming Unit for the electronic control of the radiation patterns in Antenna Array Systems is the purpose of the present research. A subunit the for phase control of a Conformal Array Antenna System has been designed and developed while an array architecture, based on the performance of the developed subunit, is also suggested. Electronic steering of the radiation pattern in a wide range, without the appearance of undesirable phenomena, is achieved, while simple and flexible algorithms can be applied for interference suppression.","PeriodicalId":156210,"journal":{"name":"2003 33rd European Microwave Conference, 2003","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133343193","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 Versatile Calibration Method for Small Active Antenna Arrays 小型有源天线阵列的通用校准方法
2003 33rd European Microwave Conference, 2003 Pub Date : 2003-10-01 DOI: 10.1109/EUMA.2003.341073
T. Brauner, R. Vogt, W. Bachtold
{"title":"A Versatile Calibration Method for Small Active Antenna Arrays","authors":"T. Brauner, R. Vogt, W. Bachtold","doi":"10.1109/EUMA.2003.341073","DOIUrl":"https://doi.org/10.1109/EUMA.2003.341073","url":null,"abstract":"A novel method is introduced to determine the gain and phase inequalities in antenna arrays that are caused by active components. This method makes use of the reciprocity of a single transmission line that propagates a calibration signal to all elements. This approach avoids a symmetric divider network and therefore it can be easily applied to two-dimensional, not equally spaced or non-planar arrays. An estimation of the systematic error is given. The concept is experimentally verified.","PeriodicalId":156210,"journal":{"name":"2003 33rd European Microwave Conference, 2003","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133801867","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 Extremely Broadband Software Configurable Six-Port Receiver Platform 一个极宽带软件可配置的六端口接收机平台
2003 33rd European Microwave Conference, 2003 Pub Date : 2003-10-01 DOI: 10.1109/EUMA.2003.341030
T. Mack, A. Honold, J. Luy
{"title":"An Extremely Broadband Software Configurable Six-Port Receiver Platform","authors":"T. Mack, A. Honold, J. Luy","doi":"10.1109/EUMA.2003.341030","DOIUrl":"https://doi.org/10.1109/EUMA.2003.341030","url":null,"abstract":"A software configurable receiver front-end based on six-port technology for a frequency range from 2 GHz to 20 GHz is presented. Its discriminator circuit is composed of coaxially connected, and commercially available passive elements. Simulation and measurement results of quadrature phase shift keying (QPSK) demodulation tests at carrier frequencies between 2 GHz and 20 GHz are shown. Without the use of hardware filters and amplifiers data rates up to 1 MBit/s can be demonstrated. The achieved low bit error rate (BER) proves the capability of this new concept for high bit rate wireless data links. For demodulation, a new packet based real-time calibration method was applied. Due to its inherent broad band properties, the proposed front-end is especially qualified for the realisation of multistandard, reconfigurable receiver platforms. An introduction to emerging six-port applications will be given. The functional principle of the six-port receiver including the theoretical background are explained. Simulation and measurement results are discussed and possible improvements will be pointed out.","PeriodicalId":156210,"journal":{"name":"2003 33rd European Microwave Conference, 2003","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124138044","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
Measurement of the sheet resistance of thin metallic films at 130GHz 金属薄膜在130GHz下的片电阻测量
2003 33rd European Microwave Conference, 2003 Pub Date : 2003-10-01 DOI: 10.1109/EUMA.2003.340992
M-H. J. Lee, R. Collier
{"title":"Measurement of the sheet resistance of thin metallic films at 130GHz","authors":"M-H. J. Lee, R. Collier","doi":"10.1109/EUMA.2003.340992","DOIUrl":"https://doi.org/10.1109/EUMA.2003.340992","url":null,"abstract":"The sheet resistance of thin metallic films has been measured using a transmission technique at 130 GHz. This technique can be used for a range of sheet resistances from a few kilohms down to a few ohms. The microwave results are higher than the corresponding values measured at 0 Hz. For sheet resistances less than a few ohms, the measurement range has been extended downwards using patterned metallic films.","PeriodicalId":156210,"journal":{"name":"2003 33rd European Microwave Conference, 2003","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124184842","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
Mobile Phone Power Amplifier Linearity and Efficiency Enhancement Using Digital Predistortion 利用数字预失真提高手机功率放大器线性度和效率
2003 33rd European Microwave Conference, 2003 Pub Date : 2003-10-01 DOI: 10.1109/EUMA.2003.340942
N. Ceylan1, J. Mueller, T. Pittorino, R. Weigel
{"title":"Mobile Phone Power Amplifier Linearity and Efficiency Enhancement Using Digital Predistortion","authors":"N. Ceylan1, J. Mueller, T. Pittorino, R. Weigel","doi":"10.1109/EUMA.2003.340942","DOIUrl":"https://doi.org/10.1109/EUMA.2003.340942","url":null,"abstract":"The new generation mobile communication systems using spectrum efficient linear modulation schemes (QPSK, 8PSK, QAM) need linear power amplifiers in the transmission path to have good ACPR and EVM values. Linearization methods can be used to increase the linearity of the power amplifiers (PA). However, it is not reasonable to use complicated, power consuming and high cost systems. This paper presents a digital predistortion implementation for WCDMA signals using an FPGA (Field Programmable Gate Array) as DSP and investigates the application of this system in handsets. The method applied requires minimum change in the conventional transmitter path configuration but considerable PAE improvement can be achieved.","PeriodicalId":156210,"journal":{"name":"2003 33rd European Microwave Conference, 2003","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114584528","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: 23
A Rigorous Analysis of Distributed Microwave Effects in Traveling Wave Photodetectors and Their Interconnections with Passive Microwave Transmission Lines 行波光电探测器分布微波效应及其与无源微波传输线互连的严格分析
2003 33rd European Microwave Conference, 2003 Pub Date : 2003-10-01 DOI: 10.1109/EUMA.2003.340883
D. Pasalic, R. Vahldieck
{"title":"A Rigorous Analysis of Distributed Microwave Effects in Traveling Wave Photodetectors and Their Interconnections with Passive Microwave Transmission Lines","authors":"D. Pasalic, R. Vahldieck","doi":"10.1109/EUMA.2003.340883","DOIUrl":"https://doi.org/10.1109/EUMA.2003.340883","url":null,"abstract":"A computationally efficient hybrid technique for rigorous analysis of TWPDs and their connections with the embedding microwave circuit is presented. The combination of a 2D drift-diffusion based semiconductor analysis method with a full-wave EM simulator allows the computation of slow wave factor and RF attenuation constant of the TWPD as functions of optical input power. In addition, the interconnection effects in terms of s-parameters between the TWPD and a passive CPW line using airbridge transition are presented.","PeriodicalId":156210,"journal":{"name":"2003 33rd European Microwave Conference, 2003","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114524077","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: 4
An Ultra Broadband Ferriteless Planar Transmission Line Transformer 超宽带无铁氧体平面传输线变压器
2003 33rd European Microwave Conference, 2003 Pub Date : 2003-10-01 DOI: 10.1109/EUMA.2003.341012
J. Horn, G. Boeck
{"title":"An Ultra Broadband Ferriteless Planar Transmission Line Transformer","authors":"J. Horn, G. Boeck","doi":"10.1109/EUMA.2003.341012","DOIUrl":"https://doi.org/10.1109/EUMA.2003.341012","url":null,"abstract":"An equivalent circuit based on multi-conductor line theory for planar transmission line transformers (TLT) is presented. Its validity is demonstrated for a 50 ¿ to 12.5 ¿ TLT. The device is realized on a three metal layer PCB. It operates at frequencies from 200 MHz up to 5.5 GHz.","PeriodicalId":156210,"journal":{"name":"2003 33rd European Microwave Conference, 2003","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114671929","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
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