| Section A: Microwave Technology and Related Topics |
| Manuscript Title: Intelligent Bacterial Foraging Optimization Technique to Calculate Resonant Frequency of RMA |
| Manuscript Id: IJMOT-2008-7-341 |
| Abstract: In this paper, a novel technique is developed by hybridizing Bacterial Foraging Optimization technique in conjunction with Particle Swarm Optimization and is applied to the expressions developed by M.Kara to calculate accurately the desired resonant frequency of rectangular microstrip antenna of any dimension and of any substrate thickness. |
| Authors: Sastry. V.R.S. GOLLAPUDI, Dr. Shyam.S.Pattnaik, Dr.O.P.Bajapai, Smt. Swapna Devi , K.M.Bakwad and Patra.K Pradyumna |
Category: Microwave Technology Submitted On: 7/20/2008 Full Text [PDF] Pg.Nos: 67-75
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| Manuscript Title: Circuit Model of Microstrip Step Discontinuity |
| Manuscript Id: IJMOT-2008-8-385 |
| Abstract: New closed-form models for step discontinuity shunt capacitance (Cp) and series inductance (Ls) for the microstrip step discontinuity is reported for the substrate or more. The step junction can have wide range of impedance ratio. The models have average deviation 0.027 for the Cp and 0.015 for Ls against the results of Sonnet. |
| Authors: HIMANSHU SINGH , A.K.VERMA |
Category: Microwave Technology Submitted On: 8/26/2008 Full Text [PDF] Pg.Nos: 76-82
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| Manuscript Title: Closed-form Dispersion Models for Propagation Characteristics of Slot-line in Lossy Media with Conductor Thickness |
| Manuscript Id: IJMOT-2008-9-387 |
| Abstract: The CAD oriented closed-form model is presented to compute frequency dependent effective relative permittivity and characteristic impedance of a slot-line with finite conductor thickness in the range 3-50μm. The model has average accuracy of about 2% against the full-wave results from different sources in the frequency range 2GHz–60GHz,permittivity range 2.22-20,w/h range 0.02-1.0. The dielectric loss and conductor loss for slot lines have been computed using the closed-form model. The results have been verified and are found to be in excellent agreement with the practical and theoretical data available in the literature. |
| Authors: Payal Majumdar , A.K Verma |
Category: Microwave Technology Submitted On: 1/10/2009 Full Text [PDF] Pg.Nos: 83-89
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| Manuscript Title: PSO driven RBF NN to calculate Microstrip patch Antenna parameter |
| Manuscript Id: IJMOT-2008-9-390 |
| Abstract: In this paper, we present particle swarm optimization driven radial basis neural network to calculate the radius of circular microstrip patch antenna. The proposed algorithm is tested with the already published antenna structures and the results are compared. The results are in good agreement and are with better accuracy. |
| Authors: Vidya Sagar chintakindi, Dr. Shyam Sundar Pattnaik, Dr.O.P.Bajpai, S.Devi,P.K.Patra , K.M.Bakwad |
Category: Microwave Technology Submitted On: 1/6/2009 Full Text [PDF] Pg.Nos: 90-94
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| Manuscript Title: A Cantor based Prefractal Multiband Antenna |
| Manuscript Id: IJMOT-2008-9-392 |
| Abstract: This paper proposes a design of new fractal monopole antenna using Cantor bar fractal geometry. The antenna exhibits multiband characteristics with reduction in dimension compared to traditional Sierpinski fractal antenna. |
| Authors: B Manimegalai,S Raju, V Abhaikumar |
Category: Microwave Technology Submitted On: 1/16/2009 Full Text [PDF] Pg.Nos: 95-98
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| Manuscript Title: INVESTIGATION OF AN H-SHAPED MICROSTRIP PATCH ANTENNA WITH INDUCTIVE LOADING |
| Manuscript Id: IJMOT-2008-11-403 |
| Abstract: Theoretical results of shorting posts loaded H-shaped planar antenna are presented. Based on the transmission line model, a study of resonant frequency, return loss and saving in patch area of the antenna are presented, and effects of each parameter are also illustrated. The results of resonant frequency and return loss obtained by given theory are compared with simulated and experimental results reported earlier. It is found that resonant frequency, return loss and saving in patch area of the designed antenna are very sensitive to the dimensions of middle section of the patch. This method is simple, computationally efficient and fast for the calculation and also has a good physical insight.
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| Authors: PRADYOT KALA |
Category: Microwave Technology Submitted On: 2/12/2009 Full Text [PDF] Pg.Nos: 99-106
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| Manuscript Title: Closed-form Model of W/h- Dependent Equivalent Isotropic Relative Permittivity of Microstrip on Multilayer Anisotropic Substrate |
| Manuscript Id: IJMOT-2008-11-409 |
| Abstract: The equivalent isotropic relative permittivity of the multilayer microstrip line on the anisotropic substrate for , anisotropic ratio for both low and high permittivity substrates is reported. Model has accuracy 0.5% against the full-wave method. It computes effective relative permittivity and characteristic impedance of microstrip on composite anisotropic substrates with deviations 5.3% and 1.78% respectively against the EM- software Empire. It is used to obtain dispersion in multilayer anisotropic substrate microstrip up to mm wave range with high accuracy against the results of HFSS. |
| Authors: A.K.Verma1, Y.K. Awasthi2*, Himanshu Singh3, |
Category: Microwave Technology Submitted On: 11/28/2008 Full Text [PDF] Pg.Nos: 107-114
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| Manuscript Title: Miniaturized Microstrip Bandpass Filter Using Coupled Metamaterial Resonators |
| Manuscript Id: IJMOT-2008-12-410 |
| Abstract: A compact microstrip band pass filter using metamaterial resonators is proposed and implemented, aiming at high level of miniaturization, low cost and ease of fabrication. Some considerations in order to improve and control the coupling coefficients between resonators are exposed. The magnetic and electric character of the coupling coefficient is analyzed in detail. The proposed filter has narrow bandwidth, low insertion loss and compact dimensions. It is observed that the measured results are good agreement with the simulated results. |
| Authors: R N Baral, P K SINGHAL |
Category: Microwave Technology Submitted On: 12/5/2008 Full Text [PDF] Pg.Nos: 115-118
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| Manuscript Title: Impact of Hardware Impairments in Wireless, MIMO OFDM Communication Systems |
| Manuscript Id: IJMOT-2009-1-421 |
| Abstract: Hardware impairments are critical when building a wireless communication system. A key problem for a designer is to estimate the effect of certain hardware impairments on the overall performance of a system before building it. In this paper, the impact of hardware impairments such as phase noise, I/Q mismatch, power amplifier non-linearity and noise from switched power supplies is studied for MIMO OFDM based wireless communication systems. Results from extensive simulations on the impact of hardware impairments are presented. The impact is presented as a loss in SNR in the demodulation process at the receiver and is used as a figure of merit for all impairments studied here. This loss in SNR can be integrated into the link budget calculation of the system. The results are presented in graphs and tables and are approximated with rather intuitive formulas. The paper presents results for 1x1 up to 4x4 MIMO systems, for outages of 1%, 5% and 10% and for 4QAM, 16QAM and 64QAM constellations |
| Authors: Stephan Lang, Babak Daneshrad |
Category: Microwave Technology Submitted On: 1/26/2009 Full Text [PDF] Pg.Nos: 119-127
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| Section B: Optical Technology and Related Topics |
| Manuscript Title: Graphical User Interface Capabilities of MATLAB in Centralized Failure Detection System (CFDS) for FTTH |
| Manuscript Id: IJMOT-2008-5-306 |
| Abstract: This paper proposed a MATLAB-based graphical user interface (GUI) development program named as Centralized Failure Detection System to increase the efficiency, survivability and reliability of FTTH customer access network. The developed program will be installed with OLT at the CO or network operation center to monitor the status and detect the failure line that occurs in the drop region of FTTH network downwardly from CO to the customer premises. The objective of this paper is to accumulate every testing result to be displayed on a single computer screen and detect the failure line in drop region of FTTH-PON network. Measurement for each optical line is saved in the OTDR and transferred into the computer for further analysis. The developed program will identify and present the parameters of optical line such as the lines status either in working or non-working condition, magnitude of decreasing as well as the location, failure location and other details as shown in the OTDRs screen. |
| Authors: Mohammad Syuhaimi Ab-Rahman, Ng Boon Chuan |
Topic: Optical Technology Submitted On: 5/4/2008 Full Text [PDF] Pg.Nos: 128-136
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