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:
May. 29, 2007
Filed:
Jul. 25, 2003
Masayuki Hosoi, Saitama, JP;
Masayuki Hosoi, Saitama, JP;
Sony Corporation, Tokyo, JP;
Abstract
A receiving device in which the shielding performance is improved to solve a pulling problem in a receiving device of a direct conversion system is provided. The receiving device includes: a substrate on which an amplifierthat amplifies high frequency input signals, a filterthat passes only intended signals and removes unintended signals by tuning the amplified high frequency input signals and a direct conversion unitthat converts and detects directly the high frequency input signal from the filter; a first high-frequency shielding portionfixed to a substrateand which stands at the boundary between the filter and the other units for preventing radiation of the high frequency electro-magnetic wave that is induced from the filter to the space; and a second high-frequency shielding portionprovided facing and close to the filter surrounded by the first high-frequency shielding portionand which prevents radiation of high frequency electro-magnetic waves induced from the filter to the space, together with the first high-frequency shielding portion