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Author: search.filters.author.Sanguanpuak, Chanidaphar

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    Measurement and Investigation of HB-UWB Transmission Link for BAN System
    (2023-01-01)
    Sanguanpuak, Chanidaphar
    ;
    Promwong, Sathaporn
    ;
    Bunlaksananusorn, Chanin
    The short-range wireless multimedia is consider used a ultra wideband (UWB) technology for human body mobile and multimedia applications shows promise for wireless multi-media systems. Based on IEEE 802.15.6, wireless body area networks (BAN) require understanding the human body’s effects on channel characteristics. This paper presents how to evaluation of human body ulra-wideband (HB-UWB) transmission with line-of-sight and non-line-of-sight scenario. Our research aims to enhance HB-UWB channel propagation on the body media by employing with CLEAN algorithm to eliminate noise. This research leverage findings from previous studies to facilitate performance comparison. Furthermore, for analyze system performance using the CLEAN algorithm at different body positions. The measurement setup covers band the FCC regulated from 3.0 GHz to 11 GHz. It includes the tested with wideband antenna and vector network analyzer (VNA). HB-UWB characteristics are shows in the path loss and power delay profile are discussed as relevant parameters. This research very useful for design and evaluation of human body mobile network and wireless multimedia systems.
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    Evaluation of partial discharge localization in power transformer with weighted centroid method
    (2019-07-01)
    Tiengthong, Thanadol
    ;
    Sanguanpuak, Chanidaphar
    ;
    Southisombat, Khamphoui
    ;
    Promwong, Sathaporn
    Partial discharge localization in power transformer is very important. A suitable evaluation method is one of the most critical part in order to find the exactly location of partial discharge. In this paper, an ultra-high frequency partial discharge localization is introduced. Weighted centroid method is one of a suitable method to evaluate the localization in partial discharge localization as well as other wireless localization system. There are many limitation of place to install the antenna in power transformer. The proper antenna placing is very important issue because improper location will affect the accuracy of partial discharge localization. The experiment of partial discharge measurement is carried out on a power transformer model from tesla power company. The purposed method used weighted centroid with received signal strength to evaluation the partial discharge in power transformer. The results show average value of received signal strength at each measurement position and the distance error of partial discharge location with weighted centroid method. The benefits of this method is useful to evaluate the partial discharge in power transformer.
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    HB channel measurement and modeling in UWB for WBAN
    (2019-04-15)
    Sanguanpuak, Chanidaphar
    ;
    Bunlaksananusorn, Chanin
    ;
    Promwong, Sathaporn
    The combination of ultra-wideband and wireless human body application is a promising communication system for future wireless system in short range. In particular, wireless body area network is based on IEEE 802.15.6. Therefore, the effect with human body is very important to know a channel characterization. In this paper, the ling of sight and non-line of sight scenario have been presented. The measurement is coverage as a full-band of FCC regulation which is 3.1 GHz to 10.6 GHz and include the under test antenna and vector network analyzer is provided. In order to investigate some of parameter, path loss and power delay profile are discussion.
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    Distortion Analysis of the HB-UWB Transmission Waveform for WBAN Applications
    (2018-07-02)
    Sanguanpuak, Chanidaphar
    ;
    Bunlaksananusorn, Chanin
    ;
    Promwong, Sathaporn
    The body area network (BAN) is a wireless technology, which play an important role in very short range wireless communications and find a wide variety of applications such as WiMedia for relaying information gathered by biological sensors on body. The ultra wideband (UWB) technology is suitable for BAN system because of transmission by impulse radio and low power. However, signal distortion due to human body effect in human body-ultrawide band (HB-UWB) channel must be study. In this study, we evaluate HB-UWB channel which serious disturbed by the distortion. The distortion can cause extremely poor signal quality to wireless transmission channel even in free space because of the antenna characteristics and waveform distortion. Thus, the understanding of the effect from characterization of antenna and waveform effect is important. The measurement data of distortion analysis due the antenna and human body of HB-UWB for WBAN were presented in this research report. The receiver waveform template was present to maximize system signal to noise ration. The equation of Friis had been used to evaluate the results. The proposed method is practical for the HB-UWB evaluation, UWB antenna design, and provide more precision to identify the waveform distortion. The results can apply for the design of wireless medical devices which focus on the effect of human body.