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Optimization of Reception Antenna Composed with Unbalanced Fed Inverted L Element for Digital Terrestrial TelevisionD. Yagyu, M. Taguchi
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ACES Journal Paper | |
Year: 2012      Volume: 27      Number: 4 | |
Click here to download PDF File Size: 869 KB | |
The structure of the array antenna for
the reception antenna of the digital terrestrial
television broadcasting in Japan is optimized by
PSO algorithm. The unbalanced fed ultra low
profile inverted L antenna is used as the driven
element and two wires are located at the forward
and backward directions of the driven element. In
the case of antenna size of 170 mm by 325 mm by
29 mm, the return loss bandwidth less than -10 dB
is satisfied at the whole broadcasting frequency
band (240 MHz) and the directivity of 5.44 dBi to
7.19 dBi is obtained. In the numerical analysis,
the electromagnetic simulator WIPL-D based on
the method of moment is used. |
Optimization of Reception Antenna Composed with Unbalanced Fed Inverted L Element for Digital Terrestrial TelevisionD. Yagyu, M. Taguchi
| |
ACES Journal Paper | |
Year: 2012      Volume: 27      Number: 6 | |
Click here to download PDF File Size: 711 KB | |
The structure of the array antenna for
the reception antenna of the digital terrestrial
television broadcasting in Japan is optimized by
PSO algorithm. The unbalanced fed ultra low
profile inverted L antenna is used as the driven
element and two wires are located at the forward
and backward directions of the driven element. In
the case of antenna size of 170 mm by 325 mm by
29 mm, the return loss bandwidth less than -10 dB
is satisfied at the whole broadcasting frequency
band (240 MHz) and the directivity of 5.44 dBi to
7.19 dBi is obtained. In the numerical analysis,
the electromagnetic simulator WIPL-D based on
the method of moment is used. |
Two Element Phased Array Dipole AntennaMitsuo Taguchi, Kotaro Era, Kazumasa Tanaka
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ACES Journal Paper | |
Year: 2007      Volume: 22      Number: 1 | |
Click here to download PDF File Size: 272 KB | |
Two element array of dipole antennas with
90 degree phase difference feed is proposed for
directional antenna applications. In the numerical
analysis, the electromagnetic simulator WIPL-D based
on the method of moment is used. At first, the distance
between the two elements is fixed to be a quarter
wavelengths at the design frequency of 2.45 GHz. The
front-to-back ratio is calculated. Then, by adjusting the
length of the two elements and the distance between
the two elements, a front-to-back ratio of 15.3 dB is
obtained. The relation between the front-to-back ratio
of this antenna and the feed point currents is discussed.
The measured input impedance with 90 degree hybrid |
Two Element Phased Array Dipole AntennaK. Tanaka, K. Era, M. Taguchi
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ACES Conference Paper | |
Year: 2006 - Advances in Electromagnetic Modeling by WIPL-D Software | |
Click here to download PDF File Size: 237 KB | |
Two element array dipole antenna with 90° phase difference feed is proposed for the directional antenna. In the numerical analysis, the electromagnetic simulator WIPL-D based on the Method of Moment is used. The distance between two elements is fixed to be a quarter wavelength at the design frequency 2.45 GHz. By adjusting the length of two elements, the front-to-back ratio of 13.6 dB is obtained. The relation between the front-to-back ratio of this antenna and the feed point currents of dipole elements is discussed. The measured input impedance with 90 degree hybrid agrees with the calculated result. |
Two Element Phased Array Dipole Antenna on Finite EBG Ground PlaneM. Taguchi, S. Tanaka, K. Tanaka
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ACES Conference Paper | |
Year: 2007 - Advances in Electromagnetic Modeling by WIPL-D Software | |
Click here to download PDF File Size: 171 KB | |
Two element phased array dipole antenna backed by finite EBG ground plane is proposed for the directional antenna. Two dipole element is fed with 90 degree phase difference. In the numerical analysis, the electromagnetic simulator WIPL-D based on the Method of Moment is used. The size of EBG ground plane is fixed to one wavelength by one wavelength at the design frequency of 2.45 GHz. The relation between the front-to-back ratio and the parameters of EBG ground plane is discussed. The maximum front-to-back ratio of 24 dB is obtained. |
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