| 摘要 |
<p>PURPOSE:To constitute components of an instruction receiver out of passive elements and thereby to dispense with a power source of the instruction receiver and to make the receiver small in size by using harmonics of an instruction wave as a confirmation signal. CONSTITUTION:A first wave F0 of a frequency f0 emitted from an instruction wave generator 1 is received by a receiver 3 of an instruction receiver 2 and a harmonics generator 4 generates a second wave nF0 of a frequency nf0 obtained by multiplying the frequency f0 of the wave F0 by (n) (an integer of (n)>=2). The wave nF0 is emitted from an antenna 5 and received by a confirmatory receiver 6 and it is confirmed that the instruction wave is sensed by the instruction receiver. By using the harmonics of the wave F0 for instruction as the wave nF0 for confirmation in this way, components of the instruction receiver can be constituted of passive elements such as a transformer, a coil, a capacitor, a non-linear element, a detector, a varactor, etc. Therefore a power source is dispensed with and the instruction receiver can be made small in size.</p> |
