The search functionality is under construction.
The search functionality is under construction.

Numerical Study of the Small Multi-Panel Reconfigurable Reflector Antenna's Performance

Suphachet PHERMPHOONWATANASUK, Chatchai WAIYAPATTANAKORN

  • Full Text Views

    0

  • Cite this

Summary :

Beam reconfiguration by structural reconfigurable antenna, such as the small multi-panel reconfigurable reflector antenna, has an aspect of great concern, that is the effects due to the use of a number of small panels to form the reflecting surface. It is thus a matter of great interest to numerically investigate all possible factors affecting the performance of this type of antenna such as: neighboring panels blocking, diffraction. The "null-field hypothesis" and PTD are employed to account for the effects of both phenomena on the main beam steering ability and the cross-polar level. In addition, the transformation of the polygonal flat domains into the square domains is applied in calculating the PO radiation field due to the various irregular polygonal flat sections of the arbitrary initial approximate reflector e.g., the flat circular reflector and the paraboloidal reflector. It is found that the main contribution to the total cross polarization is depolarization due to the finite size of the panels. The maximum cross-polar gain predicted using PTD is around -30 dB. The blocking effect has minor influence on cross-polarization. Both effects cause distortion on the co-polar pattern for the observer far from boresight but blocking has more influence than edge diffraction. Both effects have minor influence on the co-polar gain. The co-polar gain has variation of less than or equal to 0.07 dB in the flat case and 0.16 dB in the paraboloid case.

Publication
IEICE TRANSACTIONS on Communications Vol.E84-B No.9 pp.2421-2435
Publication Date
2001/09/01
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section PAPER (Special Issue on Innovation in Antennas and Propagation for Expanding Radio Systems)
Category
Reflector Antennas and Power Dividers

Authors

Keyword