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Radio-coverage parallel computation on multi-processor platforms 多处理器平台上无线电覆盖并行计算
2009 European Microwave Conference (EuMC) Pub Date : 2009-10-30 DOI: 10.23919/EUMC.2009.5296123
G. Franceschetti, Pasquale Imperatore, A. Iodice, D. Riccio
{"title":"Radio-coverage parallel computation on multi-processor platforms","authors":"G. Franceschetti, Pasquale Imperatore, A. Iodice, D. Riccio","doi":"10.23919/EUMC.2009.5296123","DOIUrl":"https://doi.org/10.23919/EUMC.2009.5296123","url":null,"abstract":"In this paper, we present a parallel computational solution for the evaluation of the electromagnetic field distribution in urban environment. The emphasis is on the methodological approach employed in the derivation of the parallel prototype starting from a sequential version of an existing ray-tracing-based electromagnetic solver. A proper task partitioning is performed and appropriate computational kernel is discerned, and then an interleaved task-scheduling strategy is proposed. Finally, experimental activities carried out on a cluster demonstrate the validity of the proposed parallel solution.","PeriodicalId":232128,"journal":{"name":"2009 European Microwave Conference (EuMC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128243273","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: 6
A millimeter-wave attenuation measurement standard from 26.5 GHz to 40 GHz 26.5 GHz ~ 40ghz毫米波衰减测量标准
2009 European Microwave Conference (EuMC) Pub Date : 2009-10-30 DOI: 10.23919/EUMC.2009.5296193
Thomas Y. Wu, S. W. Chua
{"title":"A millimeter-wave attenuation measurement standard from 26.5 GHz to 40 GHz","authors":"Thomas Y. Wu, S. W. Chua","doi":"10.23919/EUMC.2009.5296193","DOIUrl":"https://doi.org/10.23919/EUMC.2009.5296193","url":null,"abstract":"A millimeter-wave attenuation measurement standard using the audio frequency substitution method is described in this paper. Attenuation values up to 90 dB from 26.5 GHz to 40 GHz can be measured by this standard. An Inductive Voltage Divider is used as a reference voltage ratio standard at 5 kHz. A dual channel high-sensitivity receiver has been designed to make accurate measurement using a lock-in amplifier. The measurement uncertainty of the new standard is analyzed. The expanded measurement uncertainty of a 0 ~ 90 dB step attenuator at 40 GHz is estimated to be 0.0037 dB ~ 0.011 dB.","PeriodicalId":232128,"journal":{"name":"2009 European Microwave Conference (EuMC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114945181","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
Multi-bit reconfigurable resonator using tapped transmission line and RF switches 采用抽头传输线和射频开关的多比特可重构谐振器
2009 European Microwave Conference (EuMC) Pub Date : 2009-09-01 DOI: 10.23919/eumc.2009.5296449
Y. Yamao, Jun-ichi Ohtsuka, Hiroki Mori, Ryota Fukuda
{"title":"Multi-bit reconfigurable resonator using tapped transmission line and RF switches","authors":"Y. Yamao, Jun-ichi Ohtsuka, Hiroki Mori, Ryota Fukuda","doi":"10.23919/eumc.2009.5296449","DOIUrl":"https://doi.org/10.23919/eumc.2009.5296449","url":null,"abstract":"Most of current mobile communication terminals are installed with multiple radio circuits and choose one of them to operate in an assigned frequency band. In order to make more efficient use of frequency spectrum and to reduce RF circuits of the future mobile terminals, reconfigurable RF circuits will be necessary that can adapt to many frequency bands. This paper proposes a new multi-bit reconfigurable resonator that can change its resonant frequency among 2N values with N RF switches and a tapped transmission line. As the simplest case, two-bit reconfigurable resonators employing λ/2 resonant mode and λ/4 resonant mode are examined in detail. Their frequency characteristics are analyzed including the loss of the RF MEMS switches by circuit simulation. A preliminary prototype using a micro strip line on a high dielectric substrate has been fabricated and evaluated for a two-bit λ/4 mode resonator. The resonators can be cascaded to form a reconfigurable low-loss bandpass filter.","PeriodicalId":232128,"journal":{"name":"2009 European Microwave Conference (EuMC)","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123079744","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
Synthesis of reflection type negative group delay circuit using transmission line resonator 利用传输线谐振器合成反射型负群延迟电路
2009 European Microwave Conference (EuMC) Pub Date : 2009-09-01 DOI: 10.23919/eumc.2009.5296195
Heungjae Choi, Younggyu Kim, Y. Jeong, C. Kim
{"title":"Synthesis of reflection type negative group delay circuit using transmission line resonator","authors":"Heungjae Choi, Younggyu Kim, Y. Jeong, C. Kim","doi":"10.23919/eumc.2009.5296195","DOIUrl":"https://doi.org/10.23919/eumc.2009.5296195","url":null,"abstract":"Design equation and synthesis of reflection type negative group delay circuit (NGDC) using transmission line resonator (TLR) are presented. From the mathematical analysis, general equations are derived and validated with simulation for lumped element (LE) equivalent circuit. TLR-loaded reflection type NGDC is proposed to overcome the limited availability of component values required for LE structural NGDC. As a design example, single unit TLR-loaded NGDC with group delay (GD) of −8ns is designed. Simulation results agreed pretty well with the proposed design equation. To obtain broadband negative group delay with rigid flatness specification, 2-stage reflection type TLR-loaded NGDC with total group delay of −7 ns, −1.7dB loss, and 30 MHz bandwidth around 2 GHz, in which magnitude flatness of 0.1dB and group delay flatness of 0.5 ns is maintained, are fabricated and demonstrated.","PeriodicalId":232128,"journal":{"name":"2009 European Microwave Conference (EuMC)","volume":"163 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116878066","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 combined dipole/bow-tie printed antenna for dual-band operation 用于双频操作的组合偶极子/领结印刷天线
2009 European Microwave Conference (EuMC) Pub Date : 2009-09-01 DOI: 10.23919/eumc.2009.5296552
M. Midrio, S. Boscolo, F. Sacchetto, C. Someda, A. Capobianco, F. M. Pigozzo, F. Pesce
{"title":"A combined dipole/bow-tie printed antenna for dual-band operation","authors":"M. Midrio, S. Boscolo, F. Sacchetto, C. Someda, A. Capobianco, F. M. Pigozzo, F. Pesce","doi":"10.23919/eumc.2009.5296552","DOIUrl":"https://doi.org/10.23919/eumc.2009.5296552","url":null,"abstract":"A novel type of printed dual-band antenna for WLAN applications is proposed. The radiating elements consist of a combination of printed dipole for the lower resonant frequency and a bow-tie antenna for the higher resonant frequency. The operation on the two separate bands is guaranteed by the correct use of surface-mounted-device inductors. The antenna has been fabricated in antipodal configuration. Measurement results demonstrated good omnidirectional properties and low cross-polarization levels.","PeriodicalId":232128,"journal":{"name":"2009 European Microwave Conference (EuMC)","volume":"628 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117109747","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
First experimental results for a linear inverse scattering TWI approach 第一个线性逆散射TWI方法的实验结果
2009 European Microwave Conference (EuMC) Pub Date : 2009-09-01 DOI: 10.23919/eumc.2009.5295925
F. Soldovieri, R. Solimene, A. Brancaccio, R. Pierri
{"title":"First experimental results for a linear inverse scattering TWI approach","authors":"F. Soldovieri, R. Solimene, A. Brancaccio, R. Pierri","doi":"10.23919/eumc.2009.5295925","DOIUrl":"https://doi.org/10.23919/eumc.2009.5295925","url":null,"abstract":"The through-wall imaging is tackled by means of a linear inverse scattering approach. In particular, in this paper we report a preliminary validation of such an approach against experimental data. To this end, a CW-SF ultra-wideband radar system is used to take measurements whereas the scattering scenario located in a controlled environment.","PeriodicalId":232128,"journal":{"name":"2009 European Microwave Conference (EuMC)","volume":"54 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120844218","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
Integrated passive devices on the selectively anodized aluminum oxide 在选择性阳极氧化铝上集成无源器件
2009 European Microwave Conference (EuMC) Pub Date : 2009-09-01 DOI: 10.23919/eumc.2009.5296509
J. Yook, Je-In Yu, Young‐Joon Kim, Young-Se Kwon
{"title":"Integrated passive devices on the selectively anodized aluminum oxide","authors":"J. Yook, Je-In Yu, Young‐Joon Kim, Young-Se Kwon","doi":"10.23919/eumc.2009.5296509","DOIUrl":"https://doi.org/10.23919/eumc.2009.5296509","url":null,"abstract":"By using selectively anodized aluminium, various IPDs (Integrated Passive Devices) are designed and fabricated. Thin-film processes are used to realize high Q inductors and high density capacitors. Q factors of the fabricated spiral inductors have more than 25 at 2 GHz and IPDs fabricated using this inductors have good RF performances. The fabricated 0.9 GHz LPF and 2.45 GHz BPF have only 0.38 dB and 1.89 dB of IL (Insertion Loss) respectively with small size.","PeriodicalId":232128,"journal":{"name":"2009 European Microwave Conference (EuMC)","volume":"22 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120855353","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
Magnetically tunable hexaferrite bandpass filter from43GHz to 83.5GHz 磁可调谐六铁氧体带通滤波器从43ghz到83.5GHz
2009 European Microwave Conference (EuMC) Pub Date : 2009-09-01 DOI: 10.23919/eumc.2009.5296273
M. Sterns, R. Rehner, D. Schneiderbanger, S. Martius, L. Schmidt
{"title":"Magnetically tunable hexaferrite bandpass filter from43GHz to 83.5GHz","authors":"M. Sterns, R. Rehner, D. Schneiderbanger, S. Martius, L. Schmidt","doi":"10.23919/eumc.2009.5296273","DOIUrl":"https://doi.org/10.23919/eumc.2009.5296273","url":null,"abstract":"In this paper a novel magnetically tunable bandpass filter based on open-ended unilateral finlines is presented. The filter covers a tuning frequency range from 43GHz to 83.5GHz with a typical insertion loss between 6.7dB and 8.5dB. Hexaferrite resonators are used to obtain high resonant frequencies with comparatively low magnetic field strengths. Although only two resonators are used, an off resonance isolation of about 60dB is achieved. In the cutoff region of the finlines the filter exhibits an off resonance isolation of more than 80dB. The use of unilateral finlines as coupling lines simplifies the integration of the filter into a planar transmission line environment what is advantageous for the design of integrated high frequency modules. Further on, a considerably larger operating frequency range is covered, compared to classical rectangular waveguide based concepts.","PeriodicalId":232128,"journal":{"name":"2009 European Microwave Conference (EuMC)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127178732","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
Multi-antenna system based on substrate integrated waveguide for Ka-band traffic-monitoring radar applications 基于基板集成波导的多天线系统在ka波段交通监控雷达中的应用
2009 European Microwave Conference (EuMC) Pub Date : 2009-09-01 DOI: 10.23919/eumc.2009.5295987
Xiaoping Chen, Lin Li, K. Wu
{"title":"Multi-antenna system based on substrate integrated waveguide for Ka-band traffic-monitoring radar applications","authors":"Xiaoping Chen, Lin Li, K. Wu","doi":"10.23919/eumc.2009.5295987","DOIUrl":"https://doi.org/10.23919/eumc.2009.5295987","url":null,"abstract":"In this paper, a multi-antenna system designed with one antenna for transmitter and the other three for receiver is proposed and demonstrated for Ka-band traffic-monitoring radar applications with simultaneous functionality of range, velocity and angle detection. Each antenna consists of 4×20 substrate integrated waveguide (SIW) slot array for wide azimuth field of view and low ground reflection. The scan angle of +5/−5 degree in azimuth plane (E-plane) for two receiver antennas, respectively, is simply realized by rotating the compact feeding network with a specific angle. The design details are given and the isolation between antennas with different orientations is also investigated. The prototyped antenna has a measured gain of about 22 dBi and side lobe suppression of 20 dB in the H-plane, while the bandwidth for the 10-dB return loss is 1.25 GHz.","PeriodicalId":232128,"journal":{"name":"2009 European Microwave Conference (EuMC)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124726456","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
Single part microwave filters made from selective laser melting 由选择性激光熔化制成的单组分微波滤波器
2009 European Microwave Conference (EuMC) Pub Date : 2009-09-01 DOI: 10.23919/eumc.2009.5296127
J. Lorente, M. M. Mendoza, Axel Zafra Petersson, L. Pambaguian, Alejandro Álvarez Melcón, C. Ernst
{"title":"Single part microwave filters made from selective laser melting","authors":"J. Lorente, M. M. Mendoza, Axel Zafra Petersson, L. Pambaguian, Alejandro Álvarez Melcón, C. Ernst","doi":"10.23919/eumc.2009.5296127","DOIUrl":"https://doi.org/10.23919/eumc.2009.5296127","url":null,"abstract":"This paper presents waveguide filters manufactured using an innovative manufacturing technique known as Selective Laser Melting (SLM). Two types of narrowband direct coupled cavity filters of fifth degree with a fractional bandwidth of 0.9% have been designed as a first evaluation of this technology for RF application. Both designs have the same frequency response but different internal waveguide geometries. The baseline design consists of rectangular cavity cross sections and rectangular inductive irises. For the second design the new geometry freedom was exploited and cavity and iris shaping techniques have been used to help minimize losses. Altogether, three sets of filters have been fabricated from aluminium alloy and titanium. Q measurement results of the filters made from the raw material, polished and silver plated are presented. It is found that high filter Q efficiency in the order of 70% or more can be achieved if a surface treatment is applied. In addition, the cavity and iris shaping employed, is reported to improve the effective filter resonator Qs over the baseline by at least 15%.","PeriodicalId":232128,"journal":{"name":"2009 European Microwave Conference (EuMC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124940594","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: 39
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