| 摘要 |
<p>PROBLEM TO BE SOLVED: To eliminate limitations of parts selection and current-carrying capacity, due to frequency rise and self resonant frequency of an inductor in an antenna facility or the like for mobile radio communication, adopting a power superimposing method using internal and external conductors of a coaxial cable performing radio signal transmission for power supply to a radio apparatus installed in a top part of a construction, such as a steel tower and a method using serial inductance and a bypass capacitor for power injection and extraction circuits. SOLUTION: A power-superimposing function to main coaxial lines is realized by connecting a center contact 612 of a power terminal 607 with the outer wall of a shorting plate 611 of an inner side coaxial line, forming a quarter- wavelength shorting coaxial circuit for triple coaxial lines 603 and 604 which are divergently provided in the main coaxial lines 601 and 602, and is realized not by a method of blocking an outflow of a high frequency signal to a power terminal side using a lumped inductor.</p> |
