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:
Jan. 05, 2010
Filed:
Dec. 21, 2007
Tatsuaki Taniguchi, Hiroshima, JP;
Kazuo Shigeta, Hiroshima, JP;
Tatsuaki Taniguchi, Hiroshima, JP;
Kazuo Shigeta, Hiroshima, JP;
Mazda Motor Corporation, , JP;
Abstract
There is provided an AM/FM receiving antenna, which is provided at a windowpane of a vehicle, comprising an AM antenna element including an end portion as a power supply point and another end portion forming an open end, and an AM/FM antenna element connected to the AM antenna element via the power supply point, wherein a distance L between the end portion and the another end portion of the AM antenna element, a reduction ratio α of a material of the windowpane, a minimum wavelength λof a receiving FM frequency band, and a maximum wavelength λof the receiving FM frequency band meet a requirement equation of α·λ/2≦L≦α·λ/2. The AM/FM receiving antenna can properly achieve the compatibility of receiving sensitivity of the AM and FM electric waves, having a smaller layout space for antenna elements.