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Antenna Performance

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M. I. M. Saleh – One of the best experts on this subject based on the ideXlab platform.

  • Effects of shell and body tissue simulating liquid (BTSL) thickness on capsule Antenna Performance
    2012 International Symposium on Computer Applications and Industrial Electronics (ISCAIE), 2012
    Co-Authors: M.s. Zulkefli, Fareq Malek, Mohd Faizal Jamlos, S.h. Idris, S.h. Ronald, M. H. Mat, K.m. Juni, M. I. M. Saleh

    Abstract:

    In this paper, the study of shell and body tissue simulating liquid (BTSL) thickness and its effects on capsule Antenna Performance at 2.45 GHz were presented. Two simulation setups which consists two different sets of shell and BTSL position near the capsule Antenna were used in the simulation process. The reflection coefficient, directivity, gain and efficiency Performance in those simulation setups were determined and compared. The influence of human tissue thickness on the Antenna behavior must be considered.

  • Effects of shell and body tissue simulating liquid (BTSL) on the compact peanut-shape Antenna Performance
    2012 IEEE Symposium on Wireless Technology and Applications (ISWTA), 2012
    Co-Authors: M.s. Zulkefli, Fareq Malek, Mohd Faizal Jamlos, S.h. Ronald, M. H. Mat, K.m. Juni, N. A. Mohd Affendi, Latifah Mohamed, M. I. M. Saleh

    Abstract:

    In this paper, the study of shell and body tissue simulating liquid (BTSL) effects on compact peanut-shape Antenna Performance that operate at frequency 2.45 GHz are presented. Two simulation setups which consist of eight different types of simulation were used in the simulation process. Reflection coefficient, bandwidth, radiation pattern and directivity in those simulation setups are determined and compared. The influence of human tissue on the Antenna behavior must be considered.

Sathaporn Promwong – One of the best experts on this subject based on the ideXlab platform.

  • Wideband Antenna Performance Evaluation for Ultra Wideband Communication System
    2018 15th International Conference on Electrical Engineering Electronics Computer Telecommunications and Information Technology (ECTI-CON), 2018
    Co-Authors: Issaree Ruethorn, Sathaporn Promwong

    Abstract:

    The transmission loss in modern wireless communication systems is usually evaluate by Friis’ formula. However, ultra wideband communication systems cannot apply its directly because the transmission waveform for the ultra wideband is difference from the other wireless communication systems. In this paper, the Performance of the ultra wideband Antenna with the measurement data of the transmission waveform based on Friis’ formula and correlation receiver are presented. This scheme used to evaluate formula for the transmission waveform of the ultra wideband communication system. The distortion will be consider the receiver waveform and Antenna should be known. Since the ultra wideband transmission waveform are pulse-shaping by the Antenna, difference parameter of the Antenna is investigated, especially the effect of the Antenna Performance and waveform template.

  • Experimental study of ultra wideband Antenna Performance with laptop computers
    2008 8th International Conference on ITS Telecommunications, 2008
    Co-Authors: N. Manositthichai, Sathaporn Promwong

    Abstract:

    The experimental study of the ultra wideband (UWB) Antenna Performance with laptop computers in an indoor channel are analyzed at 3.1 GHz to 10.6 GHz frequency band. The characteristics of indoor propagation channel are very complicated and difficult to predict. Therefore, the Performances of UWB Antenna signal shall be considered. This paper present the UWB Antenna Performance. The rectangular passband waveform, which satisfied the Federal Communication Commission (FCC) definition of UWB signal and FCC spectral masks for the indoor limits, are considered. In addition, we considered the matched filter for the receiver side to maximize the signal to noise ratio (SNR). The UWB Antenna transfer function, the UWB signal waveform of the UWB systems are evaluated. The transmission gain, the correlation coefficient are presented and discussed.

Clive Parini – One of the best experts on this subject based on the ideXlab platform.

  • Measuring wide angle Antenna Performance using small cylindrical scanners
    , 2009
    Co-Authors: Stuart Gregson, Clive Parini, J. Dupuy

    Abstract:

    A near-field measurement technique for the prediction of wide-angle asymptotic far-field Antenna patterns from data obtained from a modified small combination planar/cylindrical near-field measurement system is presented. This novel technique utilises a simple change in the alignment of the robotic positioners to enable near-field data to be taken over the surface of a conceptual right conic frustum. This configuration allows existing facilities to characterise wide-angle Antenna Performance in situations where hitherto they could have been limited by the effects of truncation. This paper aims to introduce the measurement technique, present a measurement campaign, describes the novel probe-corrected near-field to far-field transform algorithm before presenting preliminary results. As this paper recounts the progress of ongoing research, it concludes with a discussion of the remaining outstanding issues and presents an overview of the planned future work.

  • An Efficient FDTD Algorithm Based on the Equivalence Principle for Analyzing Onbody Antenna Performance
    IEEE Transactions on Antennas and Propagation, 2009
    Co-Authors: Andrea Sani, Yan Zhao, Akram Alomainy, Clive Parini

    Abstract:

    In this paper, on body Antenna Performance and its effect on the radio channel is analyzed. An efficient numerical technique based on the finite-difference time-domain technique and the equivalence principle is developed. The proposed technique begins with the problem decomposition by separately computing the wearable Antennas and on body propagation involving the digital human phantom. The equivalence principle is used as an interface between the two computational domains. We apply this technique to analyze on body Antenna and channel characteristics for three different planar body-worn Antennas operating at the industrial-scientific-medical frequency band of 2.4 GHz. Simulated results are validated with measurement data with good agreement.