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Dual band microstrip antenna with dumbbell slot for WiMAX/WLAN/satellite communications 带哑铃槽的双频微带天线，用于WiMAX/WLAN/卫星通信
2013 International Conference on Microwave and Photonics (ICMAP) Pub Date : 2013-12-01 DOI: 10.1109/ICMAP.2013.6733491
N. Rajasekhar, K. Anusudha
{"title":"Dual band microstrip antenna with dumbbell slot for WiMAX/WLAN/satellite communications","authors":"N. Rajasekhar, K. Anusudha","doi":"10.1109/ICMAP.2013.6733491","DOIUrl":"https://doi.org/10.1109/ICMAP.2013.6733491","url":null,"abstract":"A dual band microstrip dumbbell like slot antenna for wireless communication applications such as WiMAX (3.2-3.8 GHz), WLAN (5.2-5.8 GHz) and satellite communications downlink (3.7-4.2) GHz, uplink (5.925-6.425) GHz, is presented in this paper. The antenna consists of finite ground plane(27.62×22.52 mm2) with dumbbell like slots on the patch with size of 22.82×17.72 mm2 fed by 50O microstrip feed line. This antenna is realized on FR4 epoxy substrate with permittivity 4.4 and loss tangent of 0.002.It has desired antenna characteristics such as return loss better than 10dB, VSWR, gain and radiation pattern at the specified resonant frequencies. The B.W of antenna (band1-31.1%, band2-24%) is greatly improved by optimizing the width and length of the slots. The antenna is simulated using Zeland IE3D 15.10 electromagnetic solver.","PeriodicalId":286435,"journal":{"name":"2013 International Conference on Microwave and Photonics (ICMAP)","volume":"5 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":"127743314","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: 1
A compact branch-line coupler using folded microstrip lines 一种使用折叠微带线的紧凑分支线耦合器
2013 International Conference on Microwave and Photonics (ICMAP) Pub Date : 2013-12-01 DOI: 10.1109/ICMAP.2013.6733485
Ashmi Chakraborty Das, L. Murmu, S. Dwari
{"title":"A compact branch-line coupler using folded microstrip lines","authors":"Ashmi Chakraborty Das, L. Murmu, S. Dwari","doi":"10.1109/ICMAP.2013.6733485","DOIUrl":"https://doi.org/10.1109/ICMAP.2013.6733485","url":null,"abstract":"This paper presents a compact 3 dB Quadrature branch-line coupler using folded microstrip line geometry. Commercially available IE3D software has been used to design and simulate the structure. The proposed structure is simple and takes lesser optimization time. It has been shown that the structure provides about 43.63% compactness compared to the conventional branch line coupler. The structure, therefore, can be incorporated in the microwave circuit design where medium level compactness and faster design are preferred.","PeriodicalId":286435,"journal":{"name":"2013 International Conference on Microwave and Photonics (ICMAP)","volume":"89 Pt B 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":"132271405","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: 38
Probability density functions based study for identification of land cover using SAR data 基于概率密度函数的土地覆被SAR识别研究
2013 International Conference on Microwave and Photonics (ICMAP) Pub Date : 2013-12-01 DOI: 10.1109/ICMAP.2013.6733508
Shruti Gupta, Dharmendra Singh, P. Mishra, S. Garg
{"title":"Probability density functions based study for identification of land cover using SAR data","authors":"Shruti Gupta, Dharmendra Singh, P. Mishra, S. Garg","doi":"10.1109/ICMAP.2013.6733508","DOIUrl":"https://doi.org/10.1109/ICMAP.2013.6733508","url":null,"abstract":"Fully polarimetric SAR data has the ability of characterizing and differentiating various land covers as it conserves detailed information of the amplitude and the phase of backscattering coefficient, which helps in distinguishing diverse scattering mechanisms. The classification by means of polarimetric data could be enhanced by fusing it with statistical information, but labeling of different classes is still a challenge. So, in this paper, probability density function based approach has been proposed for identification of different classes of land cover. Land cover is classified into four classes using polarimetric indices information and then six probability density functions are applied on each of the classes. Chi-Squared goodness of fit (GoF) test has been used for selecting best-fit density function for each of the classes. The boundaries of the classes were estimated using scale and location parameter of the best-fit density function. The proposed approach was applied on ALOS PALSAR data which resulted in good identification of urban and water region.","PeriodicalId":286435,"journal":{"name":"2013 International Conference on Microwave and Photonics (ICMAP)","volume":"5 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":"122177737","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
Effect of Zn2+ → Li+Fe3+ substitution on electromagnetic properties in lithium zinc ferrite Zn2+→Li+Fe3+取代对铁氧体锌锂电磁性能的影响
2013 International Conference on Microwave and Photonics (ICMAP) Pub Date : 2013-12-01 DOI: 10.1109/ICMAP.2013.6733506
S. Misra, S. Ram
{"title":"Effect of Zn2+ → Li+Fe3+ substitution on electromagnetic properties in lithium zinc ferrite","authors":"S. Misra, S. Ram","doi":"10.1109/ICMAP.2013.6733506","DOIUrl":"https://doi.org/10.1109/ICMAP.2013.6733506","url":null,"abstract":"In this investigation, to tailor functional properties we explore a partial Zn<sup>2+</sup> → Li<sup>+</sup>Fe<sup>3+</sup> substitution in a series Li<sub>0.5(1-x)</sub>Zn<sub>x</sub>Fe<sub>(2.5-x/2)</sub>O<sub>4</sub> (x = 0.3, 0.5, 0.8) via a citrate-gel combustion method using metal nitrates, citric acid, and ethylene glycol at a low temperature ~90 °C. A typical sample, at x = 0.3, annealed at 400 °C for 2 h offers a ferrimagnetic hysteresis loop with a high saturation magnetization of 52.4 emu/g and a large coercivity of 138 Oe at 100 K in a low magnetic field ± 500 Oe. The magnetization value has decreased to ~17.8 emu/g (with 4 Oe coercivity) in a sample with higher Zn<sup>2+</sup>-content (x = 0.8). FESEM images describe homogeneous distribution of crystallites average 26 nm diameter. A high dielectric constant of 15117 with a low dielectric loss of 1.49 is observed at 10 kHz at x = 0.3.","PeriodicalId":286435,"journal":{"name":"2013 International Conference on Microwave and Photonics (ICMAP)","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":"131289523","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
Investigation of all optical pulse steering through a highly nonlinear chalcogenide twin core photonic crystal fiber 高非线性硫系双芯光子晶体光纤全光脉冲导向研究
2013 International Conference on Microwave and Photonics (ICMAP) Pub Date : 2013-12-01 DOI: 10.1109/ICMAP.2013.6733549
T. Uthayakumar, R. Vasantha Jayakantha Raja, K. Nithyanandan, K. Porsezian
{"title":"Investigation of all optical pulse steering through a highly nonlinear chalcogenide twin core photonic crystal fiber","authors":"T. Uthayakumar, R. Vasantha Jayakantha Raja, K. Nithyanandan, K. Porsezian","doi":"10.1109/ICMAP.2013.6733549","DOIUrl":"https://doi.org/10.1109/ICMAP.2013.6733549","url":null,"abstract":"We propose a novel highly nonlinear chalcogenide filled twin core photonic crystal fiber coupler (PCFC) for applications in all optical controlled devices. From the proposed coupler geometry, the necessary optical parameters namely, effective refractive index, dispersion, nonlinearity, coupling length and extinction coefficient are calculated by using the finite element method (FEM) at 1550 nm. The dynamical characteristics of the individual pulse parameters of an optical pulse propagation through the proposed design is analyzed numerically by employing split step Fourier method. And finally a transmission curve is arrived to explore the influence of high nonlinearity on the steering characteristics of the optical pulse through the proposed model.","PeriodicalId":286435,"journal":{"name":"2013 International Conference on Microwave and Photonics (ICMAP)","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":"131857635","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
Heuristic approach for survivability in WDM optical networks with the impact of four wave mixing 考虑四波混频影响的WDM光网络生存性的启发式方法
2013 International Conference on Microwave and Photonics (ICMAP) Pub Date : 2013-12-01 DOI: 10.1109/ICMAP.2013.6733558
T. Jaisingh, Amitesh Kumar, V. Priye
{"title":"Heuristic approach for survivability in WDM optical networks with the impact of four wave mixing","authors":"T. Jaisingh, Amitesh Kumar, V. Priye","doi":"10.1109/ICMAP.2013.6733558","DOIUrl":"https://doi.org/10.1109/ICMAP.2013.6733558","url":null,"abstract":"Survivability in Wavelength Division Multiplexed (WDM) networks is a challenging task in modern network design against network failures. In earlier days, survivability schemes were implemented with the assumption that the physical layer conditions are ideal in nature. It is seen that in long haul WDM transmissions, four wave mixing (FWM) affects the quality of transmission in fiber. Therefore it is necessary to develop new techniques that will establish error free connections. In this paper, we have proposed an end-to end path protection algorithm that includes the impact of four wave mixing on the routing and wavelength assignment in WDM optical networks. Simulation results show that the performance of the proposed scheme is much better when compared to the existing popular schemes proposed earlier for WDM optical networks with and without considering the physical layer impairment.","PeriodicalId":286435,"journal":{"name":"2013 International Conference on Microwave and Photonics (ICMAP)","volume":"83 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":"124329959","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
Modeling and design of core-shell p-n junction Si nanorod solar cell with pyramidal structure 金字塔结构核壳p-n结硅纳米棒太阳能电池的建模与设计
2013 International Conference on Microwave and Photonics (ICMAP) Pub Date : 2013-12-01 DOI: 10.1109/ICMAP.2013.6733556
B. Priyadarshini, M. Das
{"title":"Modeling and design of core-shell p-n junction Si nanorod solar cell with pyramidal structure","authors":"B. Priyadarshini, M. Das","doi":"10.1109/ICMAP.2013.6733556","DOIUrl":"https://doi.org/10.1109/ICMAP.2013.6733556","url":null,"abstract":"In recent year's nano material has been considered as a technology booster for solar photovoltaic cell. Si nanorod solar cells have not only shown an improvement in the device performance but are also compatible with the existing silicon process technology. In this work, we have developed a new device model for radial p-n junction silicon nanorod solar cell with a pyramidal structure between two nanorods. Efficiency of cell is studied by changing the different cell parameters and a nonlinear variation is obtained in most of the cases. Efficiency increases when length, reflectivity and angle of inclination increase. When the D/P ratio of the nanorod increases, efficiency increases initially and after some particular value it saturates. Simulation result shows that maximum efficiency of 21% is obtained at fixed length of 10 μm and for the angle of inclination of 100.","PeriodicalId":286435,"journal":{"name":"2013 International Conference on Microwave and Photonics (ICMAP)","volume":"26 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":"125069137","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
Studies of some non conventional split ring and complementary split ring resonators for waveguide band stop & band pass filter application 用于波导带阻带通滤波器的几种非传输型分环谐振器和互补分环谐振器的研究
2013 International Conference on Microwave and Photonics (ICMAP) Pub Date : 2013-12-01 DOI: 10.1109/ICMAP.2013.6733474
A. Bage, Sushrut Das
{"title":"Studies of some non conventional split ring and complementary split ring resonators for waveguide band stop & band pass filter application","authors":"A. Bage, Sushrut Das","doi":"10.1109/ICMAP.2013.6733474","DOIUrl":"https://doi.org/10.1109/ICMAP.2013.6733474","url":null,"abstract":"In this paper we have investigated different non-conventional Split Ring Resonator (SRRs) and Complementary Split Ring Resonator (CSRRs) based metamaterial structure for band pass and band stop filter applications. These resonators are located in the cross section of the waveguide. Since SRR dimensions are much smaller than signal wavelength, the proposed filters are extremely compact.","PeriodicalId":286435,"journal":{"name":"2013 International Conference on Microwave and Photonics (ICMAP)","volume":"7 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":"128269780","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: 18
Analytical model for luminescence enhancement by metal nanoparticles 金属纳米颗粒增强发光的分析模型
2013 International Conference on Microwave and Photonics (ICMAP) Pub Date : 2013-12-01 DOI: 10.1109/ICMAP.2013.6733452
G. Sun, J. Khurgin
{"title":"Analytical model for luminescence enhancement by metal nanoparticles","authors":"G. Sun, J. Khurgin","doi":"10.1109/ICMAP.2013.6733452","DOIUrl":"https://doi.org/10.1109/ICMAP.2013.6733452","url":null,"abstract":"We report a simple yet rigorous analytical model that adequately describes the luminescence enhancement of optical emitters that are placed in the vicinity of metal nanoparticles of sub-wavelength dimensions. Using the example of Au nanospheres embedded in the GaN dielectric, we show that enhancement depends strongly on the original radiative efficiency of the emitter, the nanoparticle size, and the separation between the emitter and metal nanosphere. We demonstrate that strong enhancement favors the closely spaced emitters and metal nanospheres, but putting them too close to each other does not always produce additional enhancement. Thus our model provides analytical treatment of the luminescence quenching and can be used to optimize both nanoparticle size and its separation from the emitter to yield maximum enhancement factor.","PeriodicalId":286435,"journal":{"name":"2013 International Conference on Microwave and Photonics (ICMAP)","volume":"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":"129027029","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
Laser Induced Microwave Oscillator: A revisit 激光诱导微波振荡器:回顾
2013 International Conference on Microwave and Photonics (ICMAP) Pub Date : 2013-12-01 DOI: 10.1109/ICMAP.2013.6733448
B. Biswas, A. Mukherjee, S. Pal
{"title":"Laser Induced Microwave Oscillator: A revisit","authors":"B. Biswas, A. Mukherjee, S. Pal","doi":"10.1109/ICMAP.2013.6733448","DOIUrl":"https://doi.org/10.1109/ICMAP.2013.6733448","url":null,"abstract":"Nothing has yet been reported on the existence of Barkhausen criterion and synchronization phenomenon in a LIMO. The present paper, aside considering the influence of a forcing signal, discusses the effect of amplitude modulated synchronizing signal on LIMO and the corresponding AM-PM conversion for the injection synchronized LIMO is studied in detail. In contradistinction to the previous works [1-9], three interesting results are reported in this paper, viz., (1) Modified Barkhausen criterion, resulting in the dependence free running frequency of oscillation on the loop-delay, (2) when the modulation index is small, the oscillator output is amplitude modulated wave both in the electrical and optical domain with almost no distortion; (3) oscillator output is modulation free when the carrier strength is small in comparison to that of the free-running oscillator. Moreover, the behavior of an LIMO in presence of a synchronizing signal have not been reported so far as far as the knowledge of the authors goes.","PeriodicalId":286435,"journal":{"name":"2013 International Conference on Microwave and Photonics (ICMAP)","volume":"149 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":"126352921","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
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