| 摘要 |
PROBLEM TO BE SOLVED: To obtain a dielectric antenna with built-in filter of a small size and an excellent electric characteristic where the problem of loss resulting from provision of a transmission means (path) between the antenna and filter sections is solved and to provide a dielectric antenna with built-in duplexer and a radio device using them. SOLUTION: Throughholes 3a, 3b are formed on a dielectric base 1 and resonance electrodes 4a, 4b are provided inside the holes to configure a filter section consisting of two-stages of resonators, and a radiation electrode 2 is formed on the dielectric base 1 to configure an antenna section. A radiation electrode 2 and an electrode 6 are coupled by a static capacitance and the electrodes 6, 7 and the resonance electrodes 4a, 4b are capacitively coupled, respectively. Thus the dielectric antenna incorporating the filter is configured.
|
