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:
Sep. 28, 2021
Filed:
Jan. 28, 2021
Applicant:
Nihon Dempa Kogyo Co., Ltd., Tokyo, JP;
Inventor:
Katsuaki Sakamoto, Saitama, JP;
Assignee:
NIHON DEMPA KOGYO CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B 5/12 (2006.01); H03B 5/36 (2006.01);
U.S. Cl.
CPC ...
H03B 5/1231 (2013.01); H03B 5/36 (2013.01); H03B 2200/0004 (2013.01); H03B 2200/0008 (2013.01); H03B 2200/009 (2013.01);
Abstract
An ultra-low noise crystal oscillator uses two crystal unit; an oscillation element of an oscillation circuit section and a crystal filter of a subsequent filter section. A Butler circuit in which the capacitors (C, C) and the inductor (L) connected in series is connected in parallel to the oscillator circuit section. This is the crystal oscillator that simplifies the manufacturing process, improves the manufacturing quality, and has good floor noise characteristics.