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:
Jul. 02, 2019
Filed:
May. 12, 2015
Shanghai Chenguang Medical Technologies Co., Ltd, Shanghai, CN;
Songtao Zhang, Shanghai, CN;
Hao Wang, Shanghai, CN;
SHANGHAI KOITO AUTOMOTIVE LAMP CO., LTD, Shanghai, CN;
Abstract
A pre-amplifier for a magnetic resonance imaging radio-frequency coil. The pre-amplifier comprises an input matching circuit (), an amplification circuit (), an output matching circuit () and a narrow band filter () for filtering a magnetic resonance signal amplified through the amplification circuit (). The present invention has the technical effect that the pre-amplifier for a magnetic resonance imaging radio-frequency coil generates a gain required by magnetic resonance imaging within a very small range near a magnetic resonance signal frequency point, but only generates a very small gain or has no amplification function completely at other frequency points, thereby significantly reducing the possibility of oscillation of the magnetic resonance imaging radio-frequency coil.