MULTIPLE SERVICE USER TERMINAL
PROBLEM TO BE SOLVED: To make access according to request for plural kinds of service by enabling a common antenna to function as a matched antenna for at least one of the plural kinds of service. SOLUTION: In an antenna matching machine 41, output 67 of a matching system 65 is connected to an anten...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To make access according to request for plural kinds of service by enabling a common antenna to function as a matched antenna for at least one of the plural kinds of service. SOLUTION: In an antenna matching machine 41, output 67 of a matching system 65 is connected to an antenna switch 69 to select one or some of a first, a second, and a third conductors 23, 27, 31 connected to an antenna element as input and controlled so as to connect only one pair of the conductors 23, 27, 31 to the output of the matching system 65 under a certain condition and to connect all of the three conductors 23, 27, 31 to the matching system 65 under other conditions by a control processor. Consequently, an operation of a transmitting and receiving switch 61, the matching system 65 and the antenna switch 69 are all controlled by a central processor with either of a direct control line or a data bus and an address bus. |
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