Wave transmission lines and networks – Coupling networks – Balanced to unbalanced circuits
Reexamination Certificate
2005-01-13
2008-12-23
Takaoka, Dean O (Department: 2817)
Wave transmission lines and networks
Coupling networks
Balanced to unbalanced circuits
C333S025000
Reexamination Certificate
active
07468640
ABSTRACT:
A balanced splitter has six ¼ strip lines. The first and third strip lines are electromagnetically coupled to each other to form a coupler. The second and fourth strip lines are electromagnetically coupled to each other to form a coupler. The first and fifth strip lines are electromagnetically coupled to each other to form a coupler. The second and sixth strip lines are electromagnetically coupled to each other to form a coupler. The first and second strip lines are connected in series to form an unbalanced line, the third and fourth strip lines form a first balanced line, and the fifth and sixth strip lines form a second balanced line. First and second resistors are electrically connected between a first balanced terminal and a second balanced terminal, and between another first balanced terminal and another second balanced terminal, respectively.
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Keating & Bennett LLP
Murata Manufacturing Co. Ltd.
Takaoka Dean O
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