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.

Date of Patent:
Jun. 07, 2005

Filed:

Jun. 17, 2003
Applicants:

Byoung Hwa Lee, Kyungki-do, KR;

Nam Chul Kim, Daejeon, KR;

Jeong Ho Yoon, Kyungki-do, KR;

Sang Soo Park, Kyungki-do, KR;

Dong Seok Park, Seoul, KR;

Inventors:

Byoung Hwa Lee, Kyungki-do, KR;

Nam Chul Kim, Daejeon, KR;

Jeong Ho Yoon, Kyungki-do, KR;

Sang Soo Park, Kyungki-do, KR;

Dong Seok Park, Seoul, KR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F005/00 ;
U.S. Cl.
CPC ...
Abstract

A balun transformer includes a structure with three .lambda./4 strip lines for converting an unbalanced signal in an unbalanced transmission line into a balanced signal in a balanced transmission line. The balun transformer includes a first dielectric sheet on which a first strip line provided, a second dielectric sheet placed under the first dielectric sheet and on which a second strip line electro-magnetically coupled to the first strip line is provided, a third dielectric sheet placed under the second dielectric sheet and on which a ground pattern is provided, and a fourth dielectric sheet placed under the third dielectric sheet and on which a third strip line is provided. The balun transformer includes the reduced number of strip lines in comparison with the conventional laminated balun transformer, so that the production cost is reduced.


Find Patent Forward Citations

Quick Actions:

Lee, Byoung. (2005). Laminated balun transformer (U.S. Patent No. 6903643). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6903643

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