Pub Date : 2013-12-01DOI: 10.1109/AEMC.2013.7045054
D. Ganguly, D. Guha, Sanghamitro Das, A. Rojatkar
Monocycle pulses are commonly used to analyze ultra wideband (UWB) antennas in time domain. But no standard guideline is available to estimate its accurate pulsewidth. In this paper, we propose a new technique and examine the same for a UWB monopole antenna. This approach should alleviate present lacunae in time domain analysis and help one to obtain accurate characteristics theoretically.
{"title":"Time domain studies of ultra wideband monopole: Theoretical study to alleviate ambiguities","authors":"D. Ganguly, D. Guha, Sanghamitro Das, A. Rojatkar","doi":"10.1109/AEMC.2013.7045054","DOIUrl":"https://doi.org/10.1109/AEMC.2013.7045054","url":null,"abstract":"Monocycle pulses are commonly used to analyze ultra wideband (UWB) antennas in time domain. But no standard guideline is available to estimate its accurate pulsewidth. In this paper, we propose a new technique and examine the same for a UWB monopole antenna. This approach should alleviate present lacunae in time domain analysis and help one to obtain accurate characteristics theoretically.","PeriodicalId":169237,"journal":{"name":"2013 IEEE Applied Electromagnetics Conference (AEMC)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131555811","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}
Pub Date : 2013-12-01DOI: 10.1109/AEMC.2013.7045111
M. Dam, Sk Sabiruddin, M. Biswas
A simple and accurate CAD model based on cavity model analysis has been proposed to compute the resonance frequency of a right angle isosceles triangular patch antenna (45°-45°-90°). A standard electromagnetic simulator (HFSS) has been employed to validate the present model. The model is found to be valid for wide range of antenna parameters. Good correlation (average % error 0.94) is seen between theoretical and simulated values compared to other model available in literature.
{"title":"Accurate model to compute of resonant frequency of right angle isosceles triangular patch antenna","authors":"M. Dam, Sk Sabiruddin, M. Biswas","doi":"10.1109/AEMC.2013.7045111","DOIUrl":"https://doi.org/10.1109/AEMC.2013.7045111","url":null,"abstract":"A simple and accurate CAD model based on cavity model analysis has been proposed to compute the resonance frequency of a right angle isosceles triangular patch antenna (45°-45°-90°). A standard electromagnetic simulator (HFSS) has been employed to validate the present model. The model is found to be valid for wide range of antenna parameters. Good correlation (average % error 0.94) is seen between theoretical and simulated values compared to other model available in literature.","PeriodicalId":169237,"journal":{"name":"2013 IEEE Applied Electromagnetics Conference (AEMC)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124904810","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}
Pub Date : 2013-12-01DOI: 10.1109/AEMC.2013.7045049
Joydeb Mandal, M. Santra
This paper presents a design methodology of an electro-magnetic copper solenoid. The axial magnetic field achievable from an electro-magnetic solenoid is first obtained using analytical formulations. The same is validated with the help of simulation using general purpose commercial software CST Studio. The electromagnetic design is complemented with the proper wire selection and thermal design for successful realisation of the solenoid. The thermal design has been done using analytical formulations and the same is validated with simulation results obtained using general purpose commercial softwares ANSYS and FloEFD.
{"title":"Design of electro-magnetic solenoid","authors":"Joydeb Mandal, M. Santra","doi":"10.1109/AEMC.2013.7045049","DOIUrl":"https://doi.org/10.1109/AEMC.2013.7045049","url":null,"abstract":"This paper presents a design methodology of an electro-magnetic copper solenoid. The axial magnetic field achievable from an electro-magnetic solenoid is first obtained using analytical formulations. The same is validated with the help of simulation using general purpose commercial software CST Studio. The electromagnetic design is complemented with the proper wire selection and thermal design for successful realisation of the solenoid. The thermal design has been done using analytical formulations and the same is validated with simulation results obtained using general purpose commercial softwares ANSYS and FloEFD.","PeriodicalId":169237,"journal":{"name":"2013 IEEE Applied Electromagnetics Conference (AEMC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122059214","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}
Pub Date : 2013-12-01DOI: 10.1109/AEMC.2013.7045075
K. Ravikumar, S. Prasad, P. H. Rao, K. Sridhar
A wideband high rejection bandstop response in a microstrip transmission line is presented. Novel mirrored complementary triangular split ring resonator (MCTSRR) is proposed for wideband performance. The wide stopband characteristics are demonstrated by loading a microstrip transmission line with the MCTSRR. The effect of gaps in the MCTSRR and the number of unit cells are optimized to create the required bandstop characteristics. The proposed configuration provides a stopband over a frequency band of 1.4 GHz to 2.7 GHz. Measured results are compared with the full wave simulation results and presented.
{"title":"Novel MCTSRR structure for wide stopband response in a microstrip transmission line","authors":"K. Ravikumar, S. Prasad, P. H. Rao, K. Sridhar","doi":"10.1109/AEMC.2013.7045075","DOIUrl":"https://doi.org/10.1109/AEMC.2013.7045075","url":null,"abstract":"A wideband high rejection bandstop response in a microstrip transmission line is presented. Novel mirrored complementary triangular split ring resonator (MCTSRR) is proposed for wideband performance. The wide stopband characteristics are demonstrated by loading a microstrip transmission line with the MCTSRR. The effect of gaps in the MCTSRR and the number of unit cells are optimized to create the required bandstop characteristics. The proposed configuration provides a stopband over a frequency band of 1.4 GHz to 2.7 GHz. Measured results are compared with the full wave simulation results and presented.","PeriodicalId":169237,"journal":{"name":"2013 IEEE Applied Electromagnetics Conference (AEMC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115981753","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}
Pub Date : 2013-12-01DOI: 10.1109/AEMC.2013.7045096
Rohit Kumar Saini, S. Dwari
A rectangular slot antenna fed by coplanar waveguide (CPW) for broadband circular polarization is presented. Two circular arc shaped grounded perturbation is introduced at diagonally opposite corners of the rectangular slot to obtain wide axial ratio bandwidth. The axial ratio bandwidth is further improved by using a triangle fractal slots in tuning stub. This slot antenna with triangle fractal slots in tuning stub has been designed and optimized on a FR4 substrate with dielectric constant ε4= 4.3 and substrate thickness h=1.53mm. The simulated results of this antenna exhibits impedance bandwidth 151.79% from frequency range (1.93GHz-12.18GHz) at VSWR ≤ 2 throughout this band and axial ratio band width 39.34% from frequency band (3.6GHz-5.45GHz) at AR ≤ 3dB. The simulated radiation patterns of this antenna are Omni-directional in H-plane and Bi-directional in E-plane.
{"title":"CPW-fed broadband circularly polarized microstrip rectangular slot antenna with triangular fractal slots in tuning stub","authors":"Rohit Kumar Saini, S. Dwari","doi":"10.1109/AEMC.2013.7045096","DOIUrl":"https://doi.org/10.1109/AEMC.2013.7045096","url":null,"abstract":"A rectangular slot antenna fed by coplanar waveguide (CPW) for broadband circular polarization is presented. Two circular arc shaped grounded perturbation is introduced at diagonally opposite corners of the rectangular slot to obtain wide axial ratio bandwidth. The axial ratio bandwidth is further improved by using a triangle fractal slots in tuning stub. This slot antenna with triangle fractal slots in tuning stub has been designed and optimized on a FR4 substrate with dielectric constant ε4= 4.3 and substrate thickness h=1.53mm. The simulated results of this antenna exhibits impedance bandwidth 151.79% from frequency range (1.93GHz-12.18GHz) at VSWR ≤ 2 throughout this band and axial ratio band width 39.34% from frequency band (3.6GHz-5.45GHz) at AR ≤ 3dB. The simulated radiation patterns of this antenna are Omni-directional in H-plane and Bi-directional in E-plane.","PeriodicalId":169237,"journal":{"name":"2013 IEEE Applied Electromagnetics Conference (AEMC)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121232763","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}
Pub Date : 2013-12-01DOI: 10.1109/AEMC.2013.7045082
P. K. Patnaik, D. C. Panda
Presently “equivalent Inductance L” and “equivalent Capacitance C” values of Distributed MEMS Transmission Line (DMTL) are found using EM optimization technique. In this paper, we propose an efficient approach using Neural Network (NN) for extraction of L and C values of DMTL. This method takes less computational resource. The LC values extracted from the neural network model are compared with EM simulation results.
{"title":"Fast extraction of L & C parameters of MEMS Transmission Line using Neural Network","authors":"P. K. Patnaik, D. C. Panda","doi":"10.1109/AEMC.2013.7045082","DOIUrl":"https://doi.org/10.1109/AEMC.2013.7045082","url":null,"abstract":"Presently “equivalent Inductance L” and “equivalent Capacitance C” values of Distributed MEMS Transmission Line (DMTL) are found using EM optimization technique. In this paper, we propose an efficient approach using Neural Network (NN) for extraction of L and C values of DMTL. This method takes less computational resource. The LC values extracted from the neural network model are compared with EM simulation results.","PeriodicalId":169237,"journal":{"name":"2013 IEEE Applied Electromagnetics Conference (AEMC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124695959","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}
Pub Date : 2013-12-01DOI: 10.1109/AEMC.2013.7045079
G. Kumar, A. Kumar
Design and implementation of a Ka-band low conversion loss suspended stripline mixer with low local oscillator (LO) power is presented in this paper. Suspended stripline technology with planar beam-lead Schottky barrier diodes has been employed for low loss mixer design. The mixer provides conversion loss of 5.8 ± 0.9 dB over 2 GHz instantaneous RF bandwidth with +6 dBm LO power at 35 GHz LO. The mixer also exhibits 1 GHz instantaneous LO bandwidth with 6.2 ± 1.2 dB conversion loss. LO to RF and LO to IF isolations for the mixer are greater than 25 dB and 45 dB respectively. The proposed mixer provides a low-cost high-performance solution for millimeterwave system design.
介绍了一种低本振(LO)功率的ka波段低转换损耗悬浮带状混频器的设计与实现。悬浮带状线技术与平面光束引线肖特基势垒二极管已被用于低损耗混频器的设计。该混频器在2 GHz瞬时射频带宽上提供5.8±0.9 dB的转换损耗，在35 GHz本振下提供+6 dBm的本振功率。该混频器还具有1 GHz的瞬时LO带宽，转换损耗为6.2±1.2 dB。混频器的LO - to - RF和LO - to - IF隔离分别大于25 dB和45 dB。该混频器为毫米波系统设计提供了一种低成本、高性能的解决方案。
{"title":"Low conversion loss Ka-band suspended stripline mixer with low LO power","authors":"G. Kumar, A. Kumar","doi":"10.1109/AEMC.2013.7045079","DOIUrl":"https://doi.org/10.1109/AEMC.2013.7045079","url":null,"abstract":"Design and implementation of a Ka-band low conversion loss suspended stripline mixer with low local oscillator (LO) power is presented in this paper. Suspended stripline technology with planar beam-lead Schottky barrier diodes has been employed for low loss mixer design. The mixer provides conversion loss of 5.8 ± 0.9 dB over 2 GHz instantaneous RF bandwidth with +6 dBm LO power at 35 GHz LO. The mixer also exhibits 1 GHz instantaneous LO bandwidth with 6.2 ± 1.2 dB conversion loss. LO to RF and LO to IF isolations for the mixer are greater than 25 dB and 45 dB respectively. The proposed mixer provides a low-cost high-performance solution for millimeterwave system design.","PeriodicalId":169237,"journal":{"name":"2013 IEEE Applied Electromagnetics Conference (AEMC)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122403814","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}
Pub Date : 2013-12-01DOI: 10.1109/AEMC.2013.7045083
Prince Baluni, S. Awasthi, A. Biswas
This paper describes the use of semicircular Dielectric Resonators (SDR) to implement a dual mode dual band filter. Dual mode filters are advantageous where size of the filter is critical e.g. in satellite communication. Here a new configuration of semicircular Dielectric Resonator in mushroom configuration is used which improves the bandwidth in the individual bands. ½HEE11 mode is excited using coaxial excitation and coupled to the second DR using vertical iris. Independent control over different couplings is provided using coupling screws. The dual bands are operating at 5.32/5.56GHz with percentage Bandwidth of 1.83%/1.65%.
{"title":"Dual mode dual bandpass filter using semicircular Dielectric Resonator in mushroom configuration","authors":"Prince Baluni, S. Awasthi, A. Biswas","doi":"10.1109/AEMC.2013.7045083","DOIUrl":"https://doi.org/10.1109/AEMC.2013.7045083","url":null,"abstract":"This paper describes the use of semicircular Dielectric Resonators (SDR) to implement a dual mode dual band filter. Dual mode filters are advantageous where size of the filter is critical e.g. in satellite communication. Here a new configuration of semicircular Dielectric Resonator in mushroom configuration is used which improves the bandwidth in the individual bands. ½HEE11 mode is excited using coaxial excitation and coupled to the second DR using vertical iris. Independent control over different couplings is provided using coupling screws. The dual bands are operating at 5.32/5.56GHz with percentage Bandwidth of 1.83%/1.65%.","PeriodicalId":169237,"journal":{"name":"2013 IEEE Applied Electromagnetics Conference (AEMC)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131095863","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}
Pub Date : 2013-12-01DOI: 10.1109/AEMC.2013.7045088
T. Prakash, P. H. Rao, K. Selvan
It is known that complementary split ring resonators (CSRR) can be used for reducing the size of microwave circuits. In this paper, the length of the 90° branch line in L-Band power divider is reduced by implementing the CSRR in the ground plane underneath the branch line. The overall reduction in foot print of the proposed approach is 37% when compared to the conventional power divider. The power divider operates from 1.65 GHz to 1.8GHz, with nearly equal power division of 3.4dB. The measured isolation between the output ports is 22.73dB.
{"title":"Complementary split ring resonator loaded reduced size Wilkinson power divider","authors":"T. Prakash, P. H. Rao, K. Selvan","doi":"10.1109/AEMC.2013.7045088","DOIUrl":"https://doi.org/10.1109/AEMC.2013.7045088","url":null,"abstract":"It is known that complementary split ring resonators (CSRR) can be used for reducing the size of microwave circuits. In this paper, the length of the 90° branch line in L-Band power divider is reduced by implementing the CSRR in the ground plane underneath the branch line. The overall reduction in foot print of the proposed approach is 37% when compared to the conventional power divider. The power divider operates from 1.65 GHz to 1.8GHz, with nearly equal power division of 3.4dB. The measured isolation between the output ports is 22.73dB.","PeriodicalId":169237,"journal":{"name":"2013 IEEE Applied Electromagnetics Conference (AEMC)","volume":"16 9-12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131526792","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}
Pub Date : 2013-12-01DOI: 10.1109/AEMC.2013.7045114
Himanshu Singhvi, S. Tripathi
A novel SWAstika Shaped Split Ring Resonator (SWASSRR) is proposed and its characteristic are investigated to reduce the Specific Absorption Ratio (SAR). SWASSRRs are inserted in between human head model and cell phone antenna in order to reduce the interaction of Electro-Magnetic (EM) radiation by creating stop bands or resonances around the 3G operating band that is 2100MHz. Optimization of SWASSRRs structural parameters leads to the reduction of the local SAR up to 57% at 2100MHz. We have also done analysis with position and place of SWASSRR to get best results. Variation of avg. SAR and local SAR is calculated against the distance on SAR line and are within acceptable range. All the analysis for proposed structure is carried out using 3 layer human head model, PIFA antenna at 2100MHz.
{"title":"Reduction of SAR using SWASSRRs in human head model from cell phone","authors":"Himanshu Singhvi, S. Tripathi","doi":"10.1109/AEMC.2013.7045114","DOIUrl":"https://doi.org/10.1109/AEMC.2013.7045114","url":null,"abstract":"A novel SWAstika Shaped Split Ring Resonator (SWASSRR) is proposed and its characteristic are investigated to reduce the Specific Absorption Ratio (SAR). SWASSRRs are inserted in between human head model and cell phone antenna in order to reduce the interaction of Electro-Magnetic (EM) radiation by creating stop bands or resonances around the 3G operating band that is 2100MHz. Optimization of SWASSRRs structural parameters leads to the reduction of the local SAR up to 57% at 2100MHz. We have also done analysis with position and place of SWASSRR to get best results. Variation of avg. SAR and local SAR is calculated against the distance on SAR line and are within acceptable range. All the analysis for proposed structure is carried out using 3 layer human head model, PIFA antenna at 2100MHz.","PeriodicalId":169237,"journal":{"name":"2013 IEEE Applied Electromagnetics Conference (AEMC)","volume":"01 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130840036","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}
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