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:
Oct. 07, 2014
Filed:
Sep. 22, 2011
Jian Xin Chen, Nantong, CN;
LI Heng Zhou, Nantong, CN;
Hui Tang, Nantong, CN;
Zhi Hua Bao, Nantong, CN;
Yong Jie Yang, Nantong, CN;
Quan Xue, Hong Kong, HK;
Jian Xin Chen, Nantong, CN;
Li Heng Zhou, Nantong, CN;
Hui Tang, Nantong, CN;
Zhi Hua Bao, Nantong, CN;
Yong Jie Yang, Nantong, CN;
Quan Xue, Hong Kong, HK;
Nantong University, Nantong, CN;
Abstract
The present invention provides a wideband frequency tunable ring resonator, wherein, comprises a closed λ/2 transmission line and two variable capacitors with tunable capacitance, the λ/2 transmission line is axisymmetric around a central line, first ends of the two variable capacitors are respectively connected to two intersection points of the λ/2 transmission line and the central line, the second ends of the two variable capacitors are respectively grounded. By implementing the technical solution of present invention, following technical effects are obtained. The fundamental resonant frequency (f) can be shifted up and down by controlling the respective values of the two loading capacitors, resulting in a bi-directional tuning of f. As a result, the tuning range of this invention can be approximately doubled as compared with the conventional tunable ring resonator.