AMPC Asia-Pacific Microwave Conference,最新文献

{"title":"Rigorous Analysis of Whispering-Gallery Dielectric Resonator Modes","authors":"N. Chen, Z.L. Sun","doi":"10.1109/APMC.1992.672003","DOIUrl":"https://doi.org/10.1109/APMC.1992.672003","url":null,"abstract":"","PeriodicalId":234490,"journal":{"name":"AMPC Asia-Pacific Microwave Conference,","volume":"155 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":"124335477","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}

{"title":"The Application of Digital Signal Processing Technique to Finite Difference Time-Domain Method","authors":"S. Qi, Q. Yang","doi":"10.1109/APMC.1992.671968","DOIUrl":"https://doi.org/10.1109/APMC.1992.671968","url":null,"abstract":"In this paper,,the spectral analysis technique of digital signal processing is first introduced to develop a new genlcral absorbing boundary condition, so that the inherent disadvantage of finite- difference time-domain (FDTD) method, U mensioncd in 141, can be overcome.","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":"125297905","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}

{"title":"A New Model for Open-Ended Dielectric Sensors","authors":"S. Stuchly, C. Sibbald","doi":"10.1109/APMC.1992.672174","DOIUrl":"https://doi.org/10.1109/APMC.1992.672174","url":null,"abstract":"","PeriodicalId":234490,"journal":{"name":"AMPC Asia-Pacific Microwave Conference,","volume":"13 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":"131902250","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}

{"title":"Tracking Optical Discriminator for Wideband Lightwave System","authors":"B. Biswas, P. Lahiri, A. Sinha, D. Mondal","doi":"10.1109/APMC.1992.672044","DOIUrl":"https://doi.org/10.1109/APMC.1992.672044","url":null,"abstract":"Based on the principle of demodulation-remodulation technique a novel detector for the angle modulated lightwave signals is presented. Wideband nature and better noise squelching p roperty of the d i sc r imin a t or have been demonstrated through computer simulation results. I. INTRODUCTION In recent years a lot of activities have been observed in the area of broad-band distribution of video signals over fibre optic link. One of the approaches that is currently being tried, is the use of single o ptical carrier ultilising subcarrier multiplexing technique, where a large number of frequency mu1 tiplexed microwave carriers which modulate either the intensity ox the frequency of a lightwave carrier using a high-speed semiconductor laser. Both the non-coherent and coherent techniques of reception have been proposed. Very recently Gross and Olshansky [ll have proposed a detection scheme of an angle modulated lightwave signal with the help of a delay-line discriminator. In contrast to this technique o f reception, we propose a tracking/coheren t optical discr-iminator . That the proposed system has a better modulation handling capability and signal - todistortion ratio (SDR) will be","PeriodicalId":234490,"journal":{"name":"AMPC Asia-Pacific Microwave Conference,","volume":"32 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":"130618827","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}

{"title":"Novel Technique for Radiated Far-Field Predictions from Near-Field Measurements","authors":"R. Laroussi, G. Costache","doi":"10.1109/APMC.1992.672228","DOIUrl":"https://doi.org/10.1109/APMC.1992.672228","url":null,"abstract":"This paper presents a method to calculate the radiated far-field of equipment under test (EUT) from near-field measurements taken in an anechoic chamber, thus replacing open field measurements. The method is based on a boundary integral and makes use of finite element domain discretization. The numerical algorithm is validated using analytical results.","PeriodicalId":234490,"journal":{"name":"AMPC Asia-Pacific Microwave Conference,","volume":"24 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":"134447730","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}

{"title":"Correlation Between the Complex Conductivity and the Transmission Coefficient of High T/sub c/ Superconducting Films of Thickness Smaller Than the Penetration Depth","authors":"J. Ceremuga, B. Langley","doi":"10.1109/APMC.1992.671933","DOIUrl":"https://doi.org/10.1109/APMC.1992.671933","url":null,"abstract":"","PeriodicalId":234490,"journal":{"name":"AMPC Asia-Pacific Microwave Conference,","volume":"45 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":"133187406","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}

{"title":"Multiples Bandstop Filter Using TM/sub 01/spl delta//-Mode Dielectric Rod Resonators","authors":"Y. Kogami, Y. Kobayashi","doi":"10.1109/APMC.1992.672089","DOIUrl":"https://doi.org/10.1109/APMC.1992.672089","url":null,"abstract":"","PeriodicalId":234490,"journal":{"name":"AMPC Asia-Pacific Microwave Conference,","volume":"33 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":"134136613","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}

{"title":"Transient Scattering from Three-Dimensional Arbitrarily-Shaped Material Bodies","authors":"D.A. Vechinski, S. Rao","doi":"10.1109/APMC.1992.672037","DOIUrl":"https://doi.org/10.1109/APMC.1992.672037","url":null,"abstract":"of potential functions as a4 1 In this work, a solution procedure is presented to obtain the transient scattering by arbitrarily shaped three dimensional material bodies directly in the ’ &:[$*MI = rz F v@i 7 -v X F,, (2) €U time-domain using the marching-on-in-time method. Numerical results for surface current density and far- xi[$. MI = T-z ar” F V@T 7 -V x 4(3) IrU scattered fields are given for various structures and compared with other methods. where","PeriodicalId":234490,"journal":{"name":"AMPC Asia-Pacific Microwave Conference,","volume":"57 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":"132495954","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}

{"title":"Theoretical Comparison of Modal Expansion and Integral Equation Methods for Near-Field to Far-Field Transformation","authors":"P. Petre, T. Sarkar","doi":"10.1109/APMC.1992.672205","DOIUrl":"https://doi.org/10.1109/APMC.1992.672205","url":null,"abstract":"-STRICT A theoretical comparison for the application and derivation of modal expansion and integral equation methods is presented. It is shown that one formulation can be transformed into the other one using Fourier transform. From this point of view it can be stated that both method solves the same integral equation but for the modal expansion approach the integral equation is solved in the spectral domain while for the integral equation method the same equation is solved in the space domain. It is shown that for most of the practical antenna types the integral equation method gives more accurate far-field estimation than the modal expansion method, particularly in the planar scanning case. -ION Near-field antenna measurements have become widely used in antenna testing since they allow for accurate measurements of antenna patterns in a controlled environment. The earliest works based on the modal expansion method in which the fields radiated by the test antenna are expanded in terms of planar, cylindrical or spherical wave functions and the measured nearfields are used to determine the coefficients of the wave functions [l-31. The primary drawback of the modal expansion technique is that when Fourier transfonn is used, the fields outside the measurement region are assumed to be zero. Consequently the far-fields are accurately determined only over a particular angular sector which is dependent on the measurement configuration 143. The equivalent current approach which represents an alternate method of computing far-fields from measured near-fields has been recently explored t5-81. Thio method utilizes near-f ield data to determine equivalent electric, magnetic or both electric and magnetic current sources I over a fictitious planar surface which encompasses the aperture of the antenna. These currents are used to ascertain the far-fields. Under certain approximations the currents produce the correct f ar-f ields in all regions in front of the antenna regardless of the geometry over which the near-field measurements are made. In this paper it is shown that the formulation derived from the modal expansion method can be transformed into the formulation derived from the integral equation approach using twodimensional Fourier transform. The basic relationship between the plane wave representation and the integral representation, as an integral over the current distribution, of the fields is known [91. However a detailed comparison for the derivation and application of both method did not appear until now. The purpose of this paper is to clarify the limitation and validation for both method when they are applied for near-field to far-field transformation.","PeriodicalId":234490,"journal":{"name":"AMPC Asia-Pacific Microwave Conference,","volume":"17 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":"115177697","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}

{"title":"A Study of Operating Modes in Monolithic Distributed Mixers","authors":"I. Robertson, H. Reader, A. Aghvami","doi":"10.1109/APMC.1992.672215","DOIUrl":"https://doi.org/10.1109/APMC.1992.672215","url":null,"abstract":"In this paper three different monolithic disvibuted mixers have been characterized in detail in order to identify the dominant operating modes and mixing mechanisms. The first chip is a cascode mixer. using two FETs to mimic the dual-gate FET mixer. The second chip is a novel matrix mixer. which draws on the matrix distributed amplifier concept. The third circuit is a balanced mixer using common-source and common-gate FET pairs. All three circuits operate over 1 to 14 GHz.","PeriodicalId":234490,"journal":{"name":"AMPC Asia-Pacific Microwave Conference,","volume":"21 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":"114800560","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}