Kikuo Asai received his B.E. degree in 1991 from the Department of Electrical and Electronic Engineering, Meijo University, and his M.S. degree in 1993 from Nagoya University, where he is currently in the doctoral program. He has been engaged in research on development and improvement of the antennas and receivers of a UHF radio telescope for interplanetary scintillation observation and in observation of the solar wind. He is a member of the Institute of Electrical Engineers of Japan and the Astronomical Society of Japan.
Design of an asymmetric parabolic cylinder antenna with high aperture efficiency
Article first published online: 23 MAR 2007
Copyright © 1996 Wiley Periodicals, Inc., A Wiley Company
Electronics and Communications in Japan (Part I: Communications)
Volume 79, Issue 2, pages 11–21, 1996
How to Cite
Asai, K., Kojima, M., Misawa, H., Ishida, Y., Maruyama, K., Yoshimi, N., Wakasa, M. and Karakida, M. (1996), Design of an asymmetric parabolic cylinder antenna with high aperture efficiency. Electron. Comm. Jpn. Pt. I, 79: 11–21. doi: 10.1002/ecja.4410790202
- Issue published online: 23 MAR 2007
- Article first published online: 23 MAR 2007
- Scientific Grant (General C) from the Ministry of Education. Grant Number: 04640425
- International Solar-Terrestrial Energy Foundation
- Cylindrical parabola;
- antenna aperture efficiency;
- corner reflector;
- radio astronomy
With respect to the asymmetric cylindrical parabola antenna constructed for radio astronomical observation at 327 MHz, the design method and the verification of the design values are reported. The present antenna placed emphasis on the improvement of the receiving sensitivity and is designed to increase the aperture efficiency as much as possible.
To carry out an optimum design of the primary feed made of a dipole array with a corner reflector, the structural parameters of the primary feed have been studied. It was found that there exist optimum values. The reduction of the efficiency due to the transmission loss and the phase error loss of the reflector surface made of stainless wires was derived. The overall aperture efficiency was estimated to be 75.9 percent. In an actually constructed antenna, the aperture efficiency measured with a celestial radio source as the standard radio source was 71 ± 5 percent. It was confirmed that the aperture efficiency derived from the computation and the optimum design values are reasonable.