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:
Nov. 16, 1999
Filed:
Sep. 04, 1997
Tamotsu Suzuki, Kyoto, JP;
Rohm Co. Ltd., Kyoto, JP;
Abstract
A first amplifier circuit having a high frequency characteristic and a second amplifier circuit having a low frequency characteristic have first and second input terminals, respectively. The first and second amplifier circuits have first and second feedback resistors for self-bias and first and second switching elements capable of interrupting outputs of the amplifier circuits, respectively. Between the first and second input terminals, a third switching element is connected. A device for controlling on and off of the switching elements is provided in order that according to a signal input to the first and second input terminals, the signal is transmitted to either the first amplifier circuit or the second amplifier circuit. As a result, irrespective of whether the front end has one output terminal or two output terminals, the input circuit can be connected to the PLL synthesizer IC as it is by connecting the output to the first input terminal or to the two input terminals.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile