| 摘要 |
PROBLEM TO BE SOLVED: To realize a compact configuration suitable for terrestrial digital television broadcast , in a high-frequency power compositor or distributor called as a power switchable combiner/divider which is preferably embodied to a radio relay device of a terrestrial digital television broadcast, connects one end of a single transmission path to one end of a branch transmission path, and is provided with a switch for opening/closing the high-frequency signal for each branch transmission path. SOLUTION: Stab patterns ST1 and ST2 to be switched and used/unused according to opening/closing of branch switches SW1-SW3, and each of parameters A, B, C and D (mm) is obtained from A=-0.050(f-620)+26.26, B=-0.072(f-620)+44.67, D=-0.038(f-620)+32.73, A+C=-0.063(f-620)+42.10, where a used frequency is f, thereby optimizing the parameters. COPYRIGHT: (C)2006,JPO&NCIPI
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