HIGH FREQUENCY SWITCH

Japanese Patent JP3800233

B2

PROBLEM TO BE SOLVED: To provide a wide band and low loss high frequency switch.
SOLUTION: The switch comprises first and second switching elements (hereinafter described as SW elements) loaded in parallel to a λ/4 portion from a branch portion of a path connecting between a first line path and a second and a third line paths, a first impedance transformer (hereinafter described as a Z0 transformer) to be connected between the first line path and the branch portion, a first high impedance line path (hereinafter described as a high Z0 line path) of λ/4 for connecting the branch portion to the first SW element, a second high impedance line path of λ/4 being connected to the first SW element and the first high Z0 line path, a second Z0 transformer to be connected between the second high Z0 line path and the second line path, a third high Z0 line path of 1/4 wave length for connecting the branch portion and the second SW element, a fourth high Z0 line path of λ/4 being connected to the second SW element and the third high Z0 line path, and a third Z0 transformer connected between a fourth high Z0 line path and the third line path.

Shigematsu Tomonori
Kenji Suematsu
Yoshitada Iyama

JP2004319982A

July 26, 2006

November 04, 2004

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Mitsubishi Electric Corporation

H01P1/15; H01P5/02; (IPC1-7): H01P1/15; H01P5/02

JP54060560A
JP3089701A

Shogo Takahashi
Tadahiko Inaba
Kanako Murakami
Nakatsuru Kazutaka

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