KMITL

Permanent URI for this communityhttps://dspace.kmitl.ac.th/handle/123456789/1

Browse

Settings

Has files: NoSubject: search.filters.subject.antenna

Search Results

Now showing 1 - 3 of 3
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Cost-Effective Satellite Ground Stations in Real-World Development for Space Classrooms
    (2025-02-01)
    Techavijit, Pirada
    ;
    Sukchalerm, Polkit
    This paper presents the development and outcomes of a cost-effective satellite ground station designed as a learning tool for satellite communication and wireless communication education. The study investigates accessible satellites and the methods for accessing them. The developed ground station has the capability to access satellites in the V, U, and L frequency bands, allowing it to receive a variety of satellite data. This includes full-disk meteorological images, high-resolution multispectral images, and scientific data from payloads of satellites in both low Earth orbit (LEO) and geostationary orbit (GEO). The ground station demonstrates capabilities similar to those of large organizations but at a significantly lower cost. This is achieved through a process of identifying educational requirements and optimizing the system for cost-efficiency. This paper presents the design demonstration, actual construction of the ground station, and results. Additionally, it compiles characteristics from real signal reception experiences from various satellites.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Heuristic UTD corner and slope diffractions for antenna problem
    (2017-12-19)
    Pimpatang, Awika
    ;
    Lertwiriyaprapa, Titipong
    ;
    Pongcharoenpanich, Chuwong
    This paper presents a heuristic UTD corner diffraction for an antenna problem. The proposed heuristic UTD corner diffraction coefficient and slope diffraction are developed from the original UTD solution. This proposed solution can deal with a finite size perfect electric conductor (PEC) configuration including edges and corners for any antenna problem. A half wavelength dipole above a square PEC patch is used to be a case study in the paper. It is found that the numerical result from the proposed UTD agrees well with the simulation result from CST computer software. However, there are some discrepancies discontinuity at 90 degrees. It is in progress work to fix this problem.
  • Loading...
    Thumbnail Image
    Some of the metrics are blocked by your 
    consent settings
    Item type:Publication,
    Evaluation of antennas performance with FCC and common spectral mask for UWB localization
    (2015-01-26)
    Kingsakda, Vongkeo
    ;
    Satahack, Phonepaseuth
    ;
    Mingmanee, Sirapop
    ;
    Promwong, Sathaporn
    Antennas which are used to transmit and receive ultra wideband impulse radio (UWB-IR) signals should be able to accomodate its large bandwidth. Moreover, the signals should not be distorted too much when they pass through the antennas. Therefore, the transfer function of antennas should be known the performance. The indoor and the outdoor localization are usually evaluated by using the extension of Friis' transmission formula. However, it is not directly application to UWB transmission systems. This paper are presentation, the characterization of UWB antennas performance that takes into account the transmission signal waveform, its distortion due to the antennas, and the receiver. Since the antennas are significant pulse-shaping filters in UWB, various kinds of antennas are experimentally examined, especially focusing on the UWB template waveform.