The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 08, 2009
Filed:
Sep. 01, 2006
Koji Mizuno, Aoba-ku, Sendai-shi, Miyagi 981-0943, JP;
Kunio Sawaya, Aoba-ku, Sendai-shi, Miyagi 980-0871, JP;
Hiroyasu Sato, Aoba-ku, Sendai-shi, Miyagi 980-0874, JP;
Yoshihiko Wagatsuma, Izume-ku, Sendai-shi, Miyagi 981-3109, JP;
Koji Mizuno, Aoba-ku, Sendai-shi, Miyagi 981-0943, JP;
Kunio Sawaya, Aoba-ku, Sendai-shi, Miyagi 980-0871, JP;
Hiroyasu Sato, Aoba-ku, Sendai-shi, Miyagi 980-0874, JP;
Yoshihiko Wagatsuma, Izume-ku, Sendai-shi, Miyagi 981-3109, JP;
Other;
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.