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. 22, 2013
Filed:
Nov. 19, 2009
Kyo Sang Lee, Gyunggi-do, KR;
Eun Young Shin, Gyunggi-do, KR;
Kyo Sang Lee, Gyunggi-do, KR;
Eun Young Shin, Gyunggi-do, KR;
Samsung Electro-Mechanics Co., Ltd., Suwon, Gyunggi-do, KR;
Abstract
Disclosed herein is an intermediate frequency filter having a variable pass band, which is capable of varying a pass band to minimize loss at a plurality of intermediate frequencies? The intermediate frequency (IF) includes a band pass filter unit arranged between a frequency conversion IC and a demodulation unit and configured to filter an IF signal output from the frequency conversion IC and output a resulting signal. A band varying unit is connected to the band pass filter unit and is configured to vary a pass band of the band pass filter unit. A switching unit connects or disconnects the band varying unit to or from the band pass filter unit. A control unit detects the IF signal and controls the switching unit in response to the IF signal so that the band varying unit is connected to or disconnected from the band pass filter unit.