ACES Publication Search



Displaying results 1 - 8 of 8 matches (0.47 seconds)

Two Element Phased Array Dipole Antenna

Mitsuo Taguchi, Kotaro Era, Kazumasa Tanaka
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 Antenna

K. Tanaka, K. Era, M. Taguchi
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.

Optimization of Reception Antenna Composed with Unbalanced Fed Inverted L Element for Digital Terrestrial Television

D. Yagyu, M. Taguchi
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 Television

D. 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 Antenna on Finite EBG Ground Plane

M. Taguchi, S. Tanaka, K. Tanaka
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.

Result page: 1