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. 19, 2016
Filed:
Dec. 16, 2014
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A frequency doubler includes a voltage controlled oscillator outputting N (where, N is a natural number) signals having a first period and having different phases, and an XOR circuit receiving the N signals and outputting a signal having a second period that corresponds to a half of the first period, wherein the voltage controlled oscillator includes N nodes that correspond to the N signals and inverter units respectively connecting the N nodes, the N nodes are arranged so that, if a signal that starts from any one start node of the N nodes passes through the same number of the inverter units, it recurs to the corresponding start node, the XOR gate includes a first unit block set including N unit blocks that are connected to the same output node and match the N nodes in a one-to-one manner, and a second unit block set that is substantially the same as the first unit block set, wherein the first and second unit block sets share the output node.