Phongcharoenpanich, Chuwong
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Preferred name
Phongcharoenpanich, Chuwong
Alternative Name
PHONGCHAROENPANICH, Chuwong
Phongcharoenpanich, C.
Main Affiliation
Email
chuwong.ph@kmitl.ac.th
5 results
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Item type:Publication, Radiation characteristics of a bidirectional antenna using a linear probe in a rectangular ring(1998-01-01); ; Wakabayashi, T.This paper reports the radiation characteristics of a low cost and simple structure bidirectional antenna by using a linear probe in a rectangular ring. The radiation pattern is obtained from the Fourier transformation of the aperture field which is derived from the field inside the ring by using Green's function. From the numerical result of the radiated field, for a specific ring dimension, the optimum length which provides the maximum directivity are calculated and chosen as a design parameter. Experimental results, verifying the bidirectional radiation, agree very well with the computational result. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Investigations of Radiation Characteristics of a circularly polarized conical beam spherical slot array antenna(1999-01-01); ; Takada, Jun IchiThis paper presents the radiation characteristics of a circularly polarized conical beam spherical slot array antenna for applying to the mobile satellite communication subscriber. The structure of the antenna is easy to fabricate i.e., a ring of perpendicular slot pairs cut on an outer surface of a concentric conducting spherical cavity enclosed by the conducting conical surface with the simple feeding structure, and a linear electric probe excited at the center of the inner surface of the cavity. Radiation fields of a spherical slot array antenna are calculated by superposing the patterns of all the slots. From the numerical results of the radiation pattern, in both elcvational and azimuthal planes, it is obvious that the conical beam is realized. The elevational beam direction is low, which is suitable for installing in the land mobile subscriber unit located far from the equator. The tracking system is not necessary because the azimuthal pattern is omnidirectional. Directivity of the antenna for various spherical radii and angles of slot positions are illustrated as the guidelines for the design. Experimental results are in good agreement with the predictions. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A circularly polarized conical beam spherical slot array antenna(1999-01-01); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A Steerable Spherical Slot Array Antenna(1999-01-01); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Dyadic Green's functions of the concentric conducting spherical cavity(1997-12-01); ; Takada, Jun ichiThis paper presents the dyadic Green's function of the concentric conducting spherical cavity enclosed by a conducting conical surface which is derived by using the eigenfunction expansion method. The results consist of magnetic and electric type dyadic Green's functions in series form.