| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wireless frequency circuit and an automatic impedance matching method for modular transmission or reception system. <P>SOLUTION: At the impedance matching stage, a matching calculation module (M-C) is connected, in a removable manner, between an amplification module (M-P) and an antenna module (M-A) including an antenna ANT, a matching impedance network MN, and a storage means MEM for storing the control data of the network. Subsequently, matching calculation is performed, and the matching calculation module (M-C) supplies the control data of the network to the storage means MEM. In the step of using the system, the matching calculation module (M-C) is removed, the antenna module (M-A) is connected directly with the amplification module (M-P) in a removable manner, and the matching impedance network MN is controlled by the control data stored corresponding to a desired impedance matching. <P>COPYRIGHT: (C)2013,JPO&INPIT |
