Krairiksh, Monai
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Preferred name
Krairiksh, Monai
Alternative Name
Krairiksh', Monai
Krairiksh, M.
Main Affiliation
Email
monai.kr@kmitl.ac.th
18 results
Now showing 1 - 10 of 18
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Item type:Publication, An equivalent circuit of a bidirectional antenna using a probe excited rectangular ring(2004-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Electromagnetic coupling of a probe inside elliptical ring(2005-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Achievable diversity performance and range improvement from polarization diversity bi-directional antenna using two-probe excited circular ring(2004-12-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, An ultra-wideband bidirectional antenna with modified circular disc monopole excited elliptical ring(2007-08-28); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Investigations of a bidirectional antenna using a probe excited rectangular ring(2005-12-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Theory and experiment of an antenna using a probe excited rectangular ring(2003-09-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A simple and cost-effective bidirectional antenna using a probe excited circular ring(2001-01-01); ; Wakabayashi, ToshioThis paper presents a simple and cost-effective bidirectional antenna using a probe excited circular ring. The structure of the antenna is simple i.e., a linear electric probe surrounded by the circular ring. The principle of the antenna design is easy and straightforward. A choice of the ring radius is first chosen to achieve the condition that only the dominant mode can be propagated. Furthermore, it is found that for a specific ring radius, the radiation patterns of the antenna are varied as the ring width. Then, the optimum ring width that provides the maximum directivity is determined. The criterion of the selection of the ring width for various ring radii is illustrated as the guidelines for the antenna design. The fabricated antennas at the operating frequency of 1.9065 GHz are measured and compared with the theoretical predictions. It is apparent that these results are in reasonable agreement. The bidirectional pattern with the gain of 5.4 dBi over the bandwidth of 17% is obtained. Moreover, the antenna can be easily fabricated with the low production cost. Therefore, this antenna is suitable for installing at the base station in the street cell. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A Bidirectional Antenna Using a Probe Excited Rectangular Ring(2001-12-01); This paper presents a simple and cost-effective bidirectional antenna using a probe excited rectangular ring. Radiation characteristics, such as radiation pattern and directivity, and impedance of this antenna are investigated. Radiated fields are calculated from the Fourier transform of the aperture field that is derived from the field inside the ring by using Green’s function. Impedance of this antenna is realized by using induced EMF method. The impedance of a probe with optimum ring length that provides the single mode is firstly determined. Then, the resultant input impedance of the antenna is the reciprocal of the combination of the probe admittance and the both apertures admittance. From our investigations, for a specific ring dimension, the optimum ring length that yields the maximum directivity is calculated and chosen as a design parameter. Experimental results, verifying the bidirectional radiation pattern and impedance, agree very well with the theoretical predictions. This antenna is suitable to be a bidirectional base-station antenna in a street cell. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Linear array of a probe-fed elliptical ring antenna(2005-12-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Characteristics of a helical array antenna radiating circularly polarized conical beam(2001-01-01);