| 摘要 |
PROBLEM TO BE SOLVED: To provide a transmission line structure which suppresses the degradation of performance due to leakage and reflection of an electromagnetic wave from a division surface of a conductor and achieves cost reduction. SOLUTION: The transmission line structure is configured such that waveguide lines 2a to 2c for transmitting electromagnetic waves are formed by a first conductor plate 1a and a second conductor plate 1b divided by a division surface common to the waveguide lines 2a to 2c. The respective waveguide lines 2a to 2c are arranged such that a wall thickness D of a conductor plate between adjacent transmission lines in the common division surface becomes an odd-number multiple of almost 1/4 of propagation wavelength of free space in an operating frequency. COPYRIGHT: (C)2011,JPO&INPIT
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