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. 01, 2014
Filed:
May. 30, 2012
Jian Xin Chen, Nantong, CN;
Hui Tang, Nantong, CN;
LI Heng Zhou, Nantong, CN;
Jin Shi, Nantong, CN;
Zhi Hua Bao, Nantong, CN;
Jian Xin Chen, Nantong, CN;
Hui Tang, Nantong, CN;
Li Heng Zhou, Nantong, CN;
Jin Shi, Nantong, CN;
Zhi Hua Bao, Nantong, CN;
Nantong University, Nantong, CN;
Abstract
A microwave frequency tunable filtering balun is provided. The microwave frequency tunable filtering balun comprises a first microwave split ring transmission line resonator and a second microwave split ring transmission line resonator arranged in a bilaterally symmetrical manner, a fourth variable capacitor and a fifth variable capacitor of same parameters. It combines two functions of balun and tunable bandpass filter (BPF) into one circuit, resulting in a compact design. The balun characteristic and frequency-tuning mechanism are investigated, and the design equations are derived.