Communications: radio wave antennas – Antennas – Slot type
Reexamination Certificate
2006-09-01
2009-12-08
Chen, Shih-Chao (Department: 2821)
Communications: radio wave antennas
Antennas
Slot type
C343S768000, C343S770000
Reexamination Certificate
active
07629936
ABSTRACT:
There is provided a method for designing a corrugated Fermi antenna having a broad-band and circular directivity required for receiving an image by using a wave of millimeter order. As a first step, an inflection point of the Fermi-Dirac function as a taper function of the Fermi antenna is changed so as to set the beam width of plane H to a beam width having a target directivity. After the beam width of the plane H is set to the target value, the aperture width of the Fermi antenna is changed so as to set the beam width of the plane E to a beam width having a target directivity. Thus, by adjusting the beam width values of the planes H and E independently from each other and matching them with the target values, it is possible to design a Fermi-antenna having a broad-band and circular directivity in a short time.
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Mizuno Koji
Sato Hiroyasu
Sawaya Kunio
Wagatsuma Yoshihiko
Chen Shih-Chao
Frommer & Lawrence & Haug LLP
Garman Russell A.
Kowalski Thomas J.
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