Pub Date : 2013-12-01DOI: 10.1109/AEMC.2013.7045045
D. C. Panda, P. K. Patnaik
This paper presents application of complex neural network for calculating complex resonating frequency of microstrip patch antenna on superstrate. The results obtained from neural network agrees well with the theoretical results.
{"title":"CAD modeling of complex resonant frequencies of a rectangular microstrip patch with a superstrate using complex backpropagation algorithm","authors":"D. C. Panda, P. K. Patnaik","doi":"10.1109/AEMC.2013.7045045","DOIUrl":"https://doi.org/10.1109/AEMC.2013.7045045","url":null,"abstract":"This paper presents application of complex neural network for calculating complex resonating frequency of microstrip patch antenna on superstrate. The results obtained from neural network agrees well with the theoretical results.","PeriodicalId":169237,"journal":{"name":"2013 IEEE Applied Electromagnetics Conference (AEMC)","volume":"15 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":"134125738","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.2013.7045062
J. G. Pollock, A. Iyer
This paper investigates the realization of epsilon-negative and near-zero (ENNZ) metamaterial liners for below-cutoff propagation in circular waveguides using an inductively loaded thin-wire grid composed of radially and azimuthally directed wires. Full-wave parametric simulations show how parameters such as periodicity in ρ, φ, and z, along with the degree of inductive loading can alter the dispersion of the structure's supported modes.
{"title":"Realization of ∈-negative-near-zero metamaterial liners for circular waveguides","authors":"J. G. Pollock, A. Iyer","doi":"10.1109/AEMC.2013.7045062","DOIUrl":"https://doi.org/10.1109/AEMC.2013.7045062","url":null,"abstract":"This paper investigates the realization of epsilon-negative and near-zero (ENNZ) metamaterial liners for below-cutoff propagation in circular waveguides using an inductively loaded thin-wire grid composed of radially and azimuthally directed wires. Full-wave parametric simulations show how parameters such as periodicity in ρ, φ, and z, along with the degree of inductive loading can alter the dispersion of the structure's supported modes.","PeriodicalId":169237,"journal":{"name":"2013 IEEE Applied Electromagnetics Conference (AEMC)","volume":"207 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":"132775808","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.2013.7045017
S. Chakrabarti
Development of trans-paraboloid reflector antenna has been presented. Trans-reflector, twist reflector have been developed as the basic part of the overall antenna. Math-CAD softwares have been developed for design and optimization of trans-reflector and twist reflector. Performance of the feed horn has been optimized using FEM based commercial software HFSS. Engineering prototype of the overall antenna has been fabricated and performance measured. Simulation and measured results are also presented.
{"title":"Transparaboloid reflector antenna at Ka-band","authors":"S. Chakrabarti","doi":"10.1109/AEMC.2013.7045017","DOIUrl":"https://doi.org/10.1109/AEMC.2013.7045017","url":null,"abstract":"Development of trans-paraboloid reflector antenna has been presented. Trans-reflector, twist reflector have been developed as the basic part of the overall antenna. Math-CAD softwares have been developed for design and optimization of trans-reflector and twist reflector. Performance of the feed horn has been optimized using FEM based commercial software HFSS. Engineering prototype of the overall antenna has been fabricated and performance measured. Simulation and measured results are also presented.","PeriodicalId":169237,"journal":{"name":"2013 IEEE Applied Electromagnetics Conference (AEMC)","volume":"106 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":"132897534","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.2013.7045122
S. Upadhyay, S. Srivastava
Necessity of decreasing the size and circuit integration of microwave and millimeter wave components has increased the demand of silicon based technology. This paper presents the design of a 60GHz on-chip antenna based on silicon CMOS technology. A monopole antenna is selected for design because of its wideband characteristics. It exhibits an impedance bandwidth from 45GHz to 70GHz. The size of the proposed antenna structure is 1.953mm × 1.93mm × 0.25mm. A minimum |S11| of -31.56dB is obtained at 58.5GHz and |S11| of -27.77dB obtained at desired 60GHz frequency. A top metal layer M6 of antenna as radiating element and bottom layer M1 to work as ground plane for antenna is grown on silicon substrate and inside SiO2 layer. A 15 μm thin layer of SiO2 is used for isolation. Gain of -4.96dB is achieved at 60GHz and gain of -4.81dB is achieved at 58.5GHz. The simulation of design was done in finite element method (FEM) based electromagnetic solver HFSS v 15.0 software package.
减小微波和毫米波器件的尺寸和电路集成度的需要增加了对硅基技术的需求。本文设计了一种基于硅CMOS技术的60GHz片上天线。由于单极天线具有宽带特性，因此选择单极天线进行设计。它的阻抗带宽从45GHz到70GHz。天线结构尺寸为1.953mm × 1.93mm × 0.25mm。在58.5GHz时，最小S11|为-31.56dB，在60GHz频率下，最小S11|为-27.77dB。天线的顶部金属层M6作为辐射元件，底部金属层M1作为天线的接地面生长在硅衬底和SiO2层内部。采用15 μm厚的SiO2进行隔离。在60GHz时实现-4.96dB增益，在58.5GHz时实现-4.81dB增益。在基于有限元法的电磁求解器HFSS v 15.0软件包中进行了设计仿真。
{"title":"A 60-GHz on-chip monopole antenna using silicon technology","authors":"S. Upadhyay, S. Srivastava","doi":"10.1109/AEMC.2013.7045122","DOIUrl":"https://doi.org/10.1109/AEMC.2013.7045122","url":null,"abstract":"Necessity of decreasing the size and circuit integration of microwave and millimeter wave components has increased the demand of silicon based technology. This paper presents the design of a 60GHz on-chip antenna based on silicon CMOS technology. A monopole antenna is selected for design because of its wideband characteristics. It exhibits an impedance bandwidth from 45GHz to 70GHz. The size of the proposed antenna structure is 1.953mm × 1.93mm × 0.25mm. A minimum |S11| of -31.56dB is obtained at 58.5GHz and |S11| of -27.77dB obtained at desired 60GHz frequency. A top metal layer M6 of antenna as radiating element and bottom layer M1 to work as ground plane for antenna is grown on silicon substrate and inside SiO2 layer. A 15 μm thin layer of SiO2 is used for isolation. Gain of -4.96dB is achieved at 60GHz and gain of -4.81dB is achieved at 58.5GHz. The simulation of design was done in finite element method (FEM) based electromagnetic solver HFSS v 15.0 software package.","PeriodicalId":169237,"journal":{"name":"2013 IEEE Applied Electromagnetics Conference (AEMC)","volume":"14 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":"129730897","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.2013.7045093
P. Prajapati, G. G. K. Murthy, A. Patnaik, M. V. Kartikeyan
A novel asymmetric plus shaped fractal slotted microstrip antenna with a Yagi-Uda concept for circularly polarized radiation and high gain has been proposed for radio frequency identification (RFID) applications. Four asymmetric plus shape slots are embedded symmetrically in the center of all four quadrants of square patch. To increase the gain, Yagi-Uda concept has been proposed. To suppress undesirable higher harmonics, dumbbell shape defected ground structure (DGS) has been introduced at the ground layer of the antenna. To compensate the reduction of the gain due to DGS, self-similar structure (fractal) of plus shape is integrated with all four plus shape slots. The 3 dB axial ratio (AR) bandwidth of 4 MHz at center frequency of 862 MHz, 10 dB impedance bandwidth of 13.20 MHz and a gain of 4.25 dB have been achieved with the proposed antenna.
{"title":"Asymmetrical plus shaped fractal slotted multilayered Yagi-Uda circularly polarized microstrip antenna with DGS","authors":"P. Prajapati, G. G. K. Murthy, A. Patnaik, M. V. Kartikeyan","doi":"10.1109/AEMC.2013.7045093","DOIUrl":"https://doi.org/10.1109/AEMC.2013.7045093","url":null,"abstract":"A novel asymmetric plus shaped fractal slotted microstrip antenna with a Yagi-Uda concept for circularly polarized radiation and high gain has been proposed for radio frequency identification (RFID) applications. Four asymmetric plus shape slots are embedded symmetrically in the center of all four quadrants of square patch. To increase the gain, Yagi-Uda concept has been proposed. To suppress undesirable higher harmonics, dumbbell shape defected ground structure (DGS) has been introduced at the ground layer of the antenna. To compensate the reduction of the gain due to DGS, self-similar structure (fractal) of plus shape is integrated with all four plus shape slots. The 3 dB axial ratio (AR) bandwidth of 4 MHz at center frequency of 862 MHz, 10 dB impedance bandwidth of 13.20 MHz and a gain of 4.25 dB have been achieved with the proposed antenna.","PeriodicalId":169237,"journal":{"name":"2013 IEEE Applied Electromagnetics Conference (AEMC)","volume":"50 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114028901","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.2013.7045067
A. Chatterjee, S. K. Parui
Theoretical investigation on a band pass frequency selective surface (FSS) constituting two layers of FSS each with inductive grid elements over dielectric substrates and air gap of varying thickness between them is presented in this paper. Using the proposed technique, FSS with very huge bandwidth and a nearly flat bandpass response (less than 6 dB of variation) can be designed. The proposed design has been investigated theoretically using ANSOFT Designer®. The structure operating on Ku band (12-18 GHz) has a number of applications including improvement of the gain of antenna operating in the Ku band, Radomes used for satellite communication, spacecraft etc.
{"title":"A multi-layered band-pass frequency selective surface designed for Ku band applications","authors":"A. Chatterjee, S. K. Parui","doi":"10.1109/AEMC.2013.7045067","DOIUrl":"https://doi.org/10.1109/AEMC.2013.7045067","url":null,"abstract":"Theoretical investigation on a band pass frequency selective surface (FSS) constituting two layers of FSS each with inductive grid elements over dielectric substrates and air gap of varying thickness between them is presented in this paper. Using the proposed technique, FSS with very huge bandwidth and a nearly flat bandpass response (less than 6 dB of variation) can be designed. The proposed design has been investigated theoretically using ANSOFT Designer®. The structure operating on Ku band (12-18 GHz) has a number of applications including improvement of the gain of antenna operating in the Ku band, Radomes used for satellite communication, spacecraft etc.","PeriodicalId":169237,"journal":{"name":"2013 IEEE Applied Electromagnetics Conference (AEMC)","volume":"77 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":"115575904","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.2013.7045097
K. Saurav, D. Sarkar, K. V. Srivastava
In this paper, a triple band dual mode patch antenna is proposed. Modified mushroom resonators are embedded in the substrate of the conventional patch antenna to induce zeroth and negative order resonances in addition to the existing positive order resonances. The proposed antenna exhibit two patch like modes (n = ±1) and one monopolar mode (n = 0).
{"title":"Dual mode triple band patch antenna based on two-dimensional composite right/left-handed transmission lines","authors":"K. Saurav, D. Sarkar, K. V. Srivastava","doi":"10.1109/AEMC.2013.7045097","DOIUrl":"https://doi.org/10.1109/AEMC.2013.7045097","url":null,"abstract":"In this paper, a triple band dual mode patch antenna is proposed. Modified mushroom resonators are embedded in the substrate of the conventional patch antenna to induce zeroth and negative order resonances in addition to the existing positive order resonances. The proposed antenna exhibit two patch like modes (n = ±1) and one monopolar mode (n = 0).","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":"115708791","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.2013.7045014
P. K. Verma, Raj Kumar, Mahakar Singh
This paper describes the design and development of low profile antenna at 470 MHz. The proposed antenna is in folded PIFA configuration. The antenna has a total dimension of 80mm×80mm×10mm and has been optimized at 470 MHZ in UHF band. The antenna has hemispherical pattern coverage. Measured results are very close to simulated ones. This antenna is suitable for helmet mounted communication system.
{"title":"Realization of low profile PIFA at UHF","authors":"P. K. Verma, Raj Kumar, Mahakar Singh","doi":"10.1109/AEMC.2013.7045014","DOIUrl":"https://doi.org/10.1109/AEMC.2013.7045014","url":null,"abstract":"This paper describes the design and development of low profile antenna at 470 MHz. The proposed antenna is in folded PIFA configuration. The antenna has a total dimension of 80mm×80mm×10mm and has been optimized at 470 MHZ in UHF band. The antenna has hemispherical pattern coverage. Measured results are very close to simulated ones. This antenna is suitable for helmet mounted communication system.","PeriodicalId":169237,"journal":{"name":"2013 IEEE Applied Electromagnetics Conference (AEMC)","volume":"41 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":"122930651","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.2013.7045099
Tuhina Oli, Raj Kumar, Nagendra Kushwaha
In this paper, a compact elliptical shaped UWB fractal antenna is proposed. The excitation is done with a double stepped coplanar waveguide feed. The frequency characteristics of proposed antenna consist of ultra wideband properties in the range 2.85 GHz to 15 GHz corresponding to the impedance bandwidth of 136.13%. The measured radiation patterns are bidirectional in E-plane and Omni-directional in H-plane. The simulated peak gain is 5dBi at 10.6 GHz. The areas of applications are modern wireless communication, penetrating radar, vehicular radar, and medical imaging.
{"title":"On the design of elliptical shape fractal antenna for UWB applications","authors":"Tuhina Oli, Raj Kumar, Nagendra Kushwaha","doi":"10.1109/AEMC.2013.7045099","DOIUrl":"https://doi.org/10.1109/AEMC.2013.7045099","url":null,"abstract":"In this paper, a compact elliptical shaped UWB fractal antenna is proposed. The excitation is done with a double stepped coplanar waveguide feed. The frequency characteristics of proposed antenna consist of ultra wideband properties in the range 2.85 GHz to 15 GHz corresponding to the impedance bandwidth of 136.13%. The measured radiation patterns are bidirectional in E-plane and Omni-directional in H-plane. The simulated peak gain is 5dBi at 10.6 GHz. The areas of applications are modern wireless communication, penetrating radar, vehicular radar, and medical imaging.","PeriodicalId":169237,"journal":{"name":"2013 IEEE Applied Electromagnetics Conference (AEMC)","volume":"38 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":"116800864","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.2013.7045038
S. Kakatkar, K. P. Ray
A radiating longitudinal shunt slot in a waveguide has been analysed by evaluating its internal admittance from its images formed in waveguide walls and using recently developed simple closed form expressions for mutual admittance. The edge condition along transverse direction of slot has been incorporated into the aperture distribution and convergence is accelerated using Shanks' transformation. The resonant length calculated using this simple and accurate analysis is shown to be in close agreement with measured and other theoretical results.
{"title":"Efficient analysis of waveguide longitudinal slot with edge condition using the sum of images","authors":"S. Kakatkar, K. P. Ray","doi":"10.1109/AEMC.2013.7045038","DOIUrl":"https://doi.org/10.1109/AEMC.2013.7045038","url":null,"abstract":"A radiating longitudinal shunt slot in a waveguide has been analysed by evaluating its internal admittance from its images formed in waveguide walls and using recently developed simple closed form expressions for mutual admittance. The edge condition along transverse direction of slot has been incorporated into the aperture distribution and convergence is accelerated using Shanks' transformation. The resonant length calculated using this simple and accurate analysis is shown to be in close agreement with measured and other theoretical results.","PeriodicalId":169237,"journal":{"name":"2013 IEEE Applied Electromagnetics Conference (AEMC)","volume":"32 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":"116985494","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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