Title:
LAMINATED BALUN TRANSFORMER
Document Type and Number:
Japanese Patent JP3800121
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a laminated balun transformer in which phase characteristic can be adjusted.
SOLUTION: A third line 24 and a first line 25 are electromagnetically coupled at a joint part P (line connection) as a coupler. A fourth line 27 and a second line 28 are electromagnetically coupled at a joint part Q (line connection) as a coupler. In this case, assuming that the length of λ/4 line at a specific characteristic impedance is L(0), the length of a coupled part between the line- connected third line 24 and first line 25 is set to L(0)+α, and the length of a coupled part between the line connected fourth line 27 and second line 28 is set to L(0)-β, wherein α and β satisfy a relation, α>0, β>0, α=β, or α≠β.
Inventors:
矢▲崎▼ 浩和
Atsushi Tojo
Atsushi Tojo
Application Number:
JP2002100720A
Publication Date:
July 26, 2006
Filing Date:
April 03, 2002
Export Citation:
Assignee:
MURATA MANUFACTURING CO.,LTD.
International Classes:
H01F19/06; H01F17/00; H03H7/42; H01F19/04; (IPC1-7): H01F19/06
Domestic Patent References:
| JP2000188218A | ||||
| JP9260145A |
Attorney, Agent or Firm:
Takeichi Morishita