| 摘要 |
PROBLEM TO BE SOLVED: To obtain an antenna device capable of corresponding to plural kinds of receiving equipment for receiving different frequency bands by selecting antennas to be combined from the plural ones based on a stored selecting state in accordance with a reception frequency and connecting them to receiving equipment. SOLUTION: The selection and connection states of plural antenna patterns 21A-21F are stored in a memory 24 in accordance with information of an input source (the types and receiving frequencies of receivers 11a-11d) so as to obtain an optimum antenna characteristic corresponding to transmission means, based on input source information, receiving signal level information and property judgement information of a receiving state obtained from a reception control part 13 with LAN. Together with it, the selection and connection states of optimum antenna patterns 21A-21F are stored in accordance with the types and reception frequencies of the receivers 11a-11d. Thus, the basic and minimum antenna patterns 21A-21F are selected and a prescribed connection is executed so that the optimum antennas are constituted in multiple numbers of receiving equipment. |
