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Optimizing Transient Antenna Response 优化瞬态天线响应
AMPC Asia-Pacific Microwave Conference, Pub Date : 1992-08-11 DOI: 10.1109/APMC.1992.672052
A. P. Lambert, S. Booker, P. Smith
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引用次数: 1
Analysis of Magnetostatic Surface Wave Excitation by Microstrip 微带激发静磁表面波的分析
AMPC Asia-Pacific Microwave Conference, Pub Date : 1992-08-11 DOI: 10.1109/APMC.1992.671958
T. Omori, K. Yashiro, S. Ohkawa
{"title":"Analysis of Magnetostatic Surface Wave Excitation by Microstrip","authors":"T. Omori, K. Yashiro, S. Ohkawa","doi":"10.1109/APMC.1992.671958","DOIUrl":"https://doi.org/10.1109/APMC.1992.671958","url":null,"abstract":"An exact analysis for magnetostatic surface wave excitation by a single microstrip is presented. Conventional approaches toward such an excitation problem do not explain experimental results in a reasonable manner. The theory proposed here predicts radiation resistances ob tained by experiments, owing to having considered the edge conditions properly. 1:NTRODUCTION","PeriodicalId":234490,"journal":{"name":"AMPC Asia-Pacific Microwave Conference,","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117279071","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
Transverse Resonance Analysis of Quasi-Open Dielectric Waveguiding Structures 准开介质波导结构的横向共振分析
AMPC Asia-Pacific Microwave Conference, Pub Date : 1992-08-11 DOI: 10.1109/APMC.1992.672223
G. Staines, B. Bates
{"title":"Transverse Resonance Analysis of Quasi-Open Dielectric Waveguiding Structures","authors":"G. Staines, B. Bates","doi":"10.1109/APMC.1992.672223","DOIUrl":"https://doi.org/10.1109/APMC.1992.672223","url":null,"abstract":"","PeriodicalId":234490,"journal":{"name":"AMPC Asia-Pacific Microwave Conference,","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124891288","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
Ka-Band Earth-Station Antenna ka波段地面站天线
AMPC Asia-Pacific Microwave Conference, Pub Date : 1992-08-11 DOI: 10.1109/APMC.1992.672085
P. Clark, K. Greene, G. James
{"title":"Ka-Band Earth-Station Antenna","authors":"P. Clark, K. Greene, G. James","doi":"10.1109/APMC.1992.672085","DOIUrl":"https://doi.org/10.1109/APMC.1992.672085","url":null,"abstract":"A 30 GHz earth-station antenna has been developed to communicate with the AUSSAT B satellites. This paper outlines the design of a high-performance feed system and optimization of the antenna’s performance on a nearfield range. Tests conducted on two completed antennas displayed very close agreement between theory and experiment the measured and theoretical values of z are p = 0.02 mm and Q = 0.26 mm. The drop in efficiency due to these surface errors can be estimated from the equation t,,=e-(4x~lU , which, with the above values, gives qSe= 0.9C. Gain loss due to departure from a paraboloid is then - 0.46 dB. 2","PeriodicalId":234490,"journal":{"name":"AMPC Asia-Pacific Microwave Conference,","volume":"176 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125815055","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
Improvement of Spatial Resolution of the Phase Compensated Reflectometer by Correcting VCF Characteristics 修正VCF特性提高相位补偿反射计空间分辨率
AMPC Asia-Pacific Microwave Conference, Pub Date : 1992-08-11 DOI: 10.1109/APMC.1992.672056
S. Hangai, K. Miyauchi
{"title":"Improvement of Spatial Resolution of the Phase Compensated Reflectometer by Correcting VCF Characteristics","authors":"S. Hangai, K. Miyauchi","doi":"10.1109/APMC.1992.672056","DOIUrl":"https://doi.org/10.1109/APMC.1992.672056","url":null,"abstract":"For the purpose of locating faults along optical tibcrs exactly, spatial resolutioii of the phase compensated reflectonleter (PCII) is improved by correcting VCF charactcristics of a sweeper. The frcyuency deviation in 66.7MHz swept width is reduced to O.Ol8MHz and the spatial resolution of 3.0m is esperinientally obtained using 100111 fibers.","PeriodicalId":234490,"journal":{"name":"AMPC Asia-Pacific Microwave Conference,","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114927297","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
Rcs Measurements in Multipath Environments 多路径环境中的Rcs测量
AMPC Asia-Pacific Microwave Conference, Pub Date : 1992-08-11 DOI: 10.1109/APMC.1992.672231
T. Moon, P.W. Taliana
{"title":"Rcs Measurements in Multipath Environments","authors":"T. Moon, P.W. Taliana","doi":"10.1109/APMC.1992.672231","DOIUrl":"https://doi.org/10.1109/APMC.1992.672231","url":null,"abstract":"A straightforward and accurate method of calibrating field measurements of radar crosssection (RCS) is presented. Using a hand-held, square trihedral comer reflector camed onboard a helicopter it is possible to calibrate field measurements of RCS .against the known freespace value of the comer reflector to an accuracy of about fldB. INTRODUCTlON Radar cross-section (RCS) measurements of targets at aea are frequently subject to variations arising from interference between the radio frequency (RF) waves propagated over direct paths from the transmitter to the target and then back to the receiver, and those returning to the receiver after reflection(s) from the sea surface. Such multipath effects are most prominent under low sea state conditions and hamper the measurement of the free-space RCS needed for system analyses, simulation and mathematical modelling. Figure 1 illustrates the variations in a target's radar echo that can occur when the illuminating RF waves are propagated over a smooth sea surface.","PeriodicalId":234490,"journal":{"name":"AMPC Asia-Pacific Microwave Conference,","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122596917","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
Calculation of the Impedance of Planar Slot Antennas 平面缝隙天线阻抗的计算
AMPC Asia-Pacific Microwave Conference, Pub Date : 1992-08-11 DOI: 10.1109/APMC.1992.671976
H. Ostner, T. Ostertag, E. Biebl
{"title":"Calculation of the Impedance of Planar Slot Antennas","authors":"H. Ostner, T. Ostertag, E. Biebl","doi":"10.1109/APMC.1992.671976","DOIUrl":"https://doi.org/10.1109/APMC.1992.671976","url":null,"abstract":"In this paper theoretical and experimental investigations of the impedance of planar slot antennas are reported. Planar half-wave and full-wave slots are simulated by a full wave analysis. For the excitation of the slots an impressed current density in the middle of the slot is alssumed. The input impedance in the middle of the slot is calculated for various substrate materials and the calculations are validated by measurements.","PeriodicalId":234490,"journal":{"name":"AMPC Asia-Pacific Microwave Conference,","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129614708","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
Polarimetric Meteorology and Atmospheric Particles Identification 极化气象学和大气粒子识别
AMPC Asia-Pacific Microwave Conference, Pub Date : 1992-08-11 DOI: 10.1109/APMC.1992.672355
Y. Antar
{"title":"Polarimetric Meteorology and Atmospheric Particles Identification","authors":"Y. Antar","doi":"10.1109/APMC.1992.672355","DOIUrl":"https://doi.org/10.1109/APMC.1992.672355","url":null,"abstract":"Polarimetric techniques for remote sensing of precipitation provide significant additional information that are essential for determining the intrinsic properties of the medium. In particular, polarization diversity radar systems which provide for the variation of the transmitted wave polarization, and for the dual reception of orthog+ nally polarized waves, have been proven to be advantageous in that respect. At the National Research Council of Canada in Ottawa, polarimetric radars that yield directly the elements of the coherency matrix, have been used in precipitation measurements. Combining polarization agility with the coherency matrix measurements at different polarization basis provides additional information about the intrinsic properties of the scatterers and other important meteorological aspects. In this paper, these aspects are summarized, the techniques used are described and some results from measurements are presented.","PeriodicalId":234490,"journal":{"name":"AMPC Asia-Pacific Microwave Conference,","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128798439","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
Parametric Oscillations in Cascaded Class C Power Amplifiers 级联C类功率放大器的参数振荡
AMPC Asia-Pacific Microwave Conference, Pub Date : 1992-08-11 DOI: 10.1109/APMC.1992.672247
W. S. Chan, T. Wong, P. Yip, K.F. Tsang
{"title":"Parametric Oscillations in Cascaded Class C Power Amplifiers","authors":"W. S. Chan, T. Wong, P. Yip, K.F. Tsang","doi":"10.1109/APMC.1992.672247","DOIUrl":"https://doi.org/10.1109/APMC.1992.672247","url":null,"abstract":"Parametric oscillations are predicted in this paper for cascaded class C power amplifiers by using Floquet's theory to characterize the functional behavior. The Hi 11's equation was then formulated for a single-degree-of-freedom system and solved for conditions of stability 111, 121.","PeriodicalId":234490,"journal":{"name":"AMPC Asia-Pacific Microwave Conference,","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129253732","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
Evaluation of 94 GHz Radar Sensor Images Obtained from Industrial Environments 工业环境下94ghz雷达传感器图像的评价
AMPC Asia-Pacific Microwave Conference, Pub Date : 1992-08-11 DOI: 10.1109/APMC.1992.672199
J. Detlefsen, M.E. Rozmann
{"title":"Evaluation of 94 GHz Radar Sensor Images Obtained from Industrial Environments","authors":"J. Detlefsen, M.E. Rozmann","doi":"10.1109/APMC.1992.672199","DOIUrl":"https://doi.org/10.1109/APMC.1992.672199","url":null,"abstract":"Sensing 3-D geometrical properties of an environment is essential for an autonomous vehicle operating inindoor situations like production plants. Compared to Current approaches with wire guidance, autonomous vehicles like mobile robots promise substantially improved flexibility for use in future production plants. Therefore, acquisition of relevant 3-D geometrical information based on sensors is a key requirement for achieving autonomy. Currently at the Technical University of Munich a demonstrator vehicle equipped with a scanning laser camera forthe very close range and a multitask mmwave radar providing 3-D information in the range from 0 m to 50 m is set up to perform autonomous sensorbased locomotion in industrial indoor scenes. This paper reports on evaluation results of the 94 GHz pulse doppler radar with 25 cm radial and 1.5' angular resolution.","PeriodicalId":234490,"journal":{"name":"AMPC Asia-Pacific Microwave Conference,","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1992-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129677242","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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