| 摘要 |
PROBLEM TO BE SOLVED: To obtain a 90-degree hybrid circuit which can easily decide element value, according to the desired transmission characteristics. SOLUTION: The 90-degree hybrid circuit is provided with four resonant circuits of the same composition, connected to four transmission lines 9 to 12 between respective four connection units 5 to 8, and is connected to respective four resonant circuits, between the respective four connection units 5 to 8 and respective four input and output terminals 1 to 4. The respective four transmission lines 9 to 12 has a length of a substantially 1/4 wavelength at a center frequency of a predetermined frequency band, and the respective four resonant circuits has resonance frequency which is substantially identical to the center frequency. COPYRIGHT: (C)2007,JPO&INPIT
|
