| 摘要 |
<P>PROBLEM TO BE SOLVED: To ensure a high quality radio communication path by obtaining a space diversity effect. <P>SOLUTION: In the telephone terminal, main antennas are arranged so as to obtain a polarization diversity effect, sub antennas are arranged so as to obtain a space diversity effect and a polarization diversity effect, a transmission/reception changeable diversity switch 23 selects main antennas A11 and B13, or the sub antennas A12 and B14 according to a diversity signal, an angle sensor 28 detects the inclination angle of its own machine and outputs a signal according to a threshold, and changeover switches 21 and 22 select a main antenna A41 or B43, or a sub antenna A42 or B44 at timing of the diversity signal 30 when the signal changes. <P>COPYRIGHT: (C)2008,JPO&INPIT |
