|発明の名称||NON-RECIPROCAL TRANSMISSION LINE DEVICE AND ANTENNA DEVICE|
PROBLEM TO BE SOLVED: To provide a non-reciprocal transmission line device operable with high efficiency in multiple bands.
SOLUTION: A non-reciprocal transmission line device comprises at least one unit cell circuit including a microwave transmission line part, a series branch circuit including a parallel resonance circuit, a first parallel branch circuit including a series resonance circuit and branched from the transmission line part and grounded via the series branch circuit, and a second parallel branch circuit including an inductive element equivalently, and branched from the transmission line part and grounded via the inductive element, and is configured so that the propagation constant in the forward direction and the propagation constant in the inverse direction are different from each other. The transmission line part of each unit cell has spontaneous magnetization so that it is magnetized in a different direction for the microwave propagation direction and has gyroscope anisotropy, or magnetized by external magnetic field and resonates at at least two frequencies, by setting the resonance frequency of the series branch circuit to be different from the resonance frequencies of the first and second parallel branch circuits.
- 国立大学法人 京都工芸繊維大学 研究推進課 知的財産係
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