| 摘要 |
<p>PURPOSE:To form a rotary coupler having a wide band transmission characteristic by providing microstrip lines opposied to each other arranged on a concentric circumference around a turning center of a rotor to an opposite face between the rotor and a stator so as to transmit/receive a high frequency signal between the microstrip lines of the rotor and stator. CONSTITUTION:When a modulation output signal as a result of the modulation of a high frequency signal by a reproduced video signal is fed to one end of a microstrip 15 of the rotor 11 from a modulator 21, the modulation output signal is fed in one way to the termination of the microstrip 15, transmitted to a microstrip 16 of the stator 12 and demodulated by a demodualtor 26 connected to one end of the microstrip 16. The directional coupler formed with the microstip lines shows the signal transmission characteristic with a specific band width of >=10% in this way. thus, in transmitting a high frequency signal whose frequency is nearly 10GHz after demodulating by the reproduced video signal, the very wide signal transmission characteristic of several 100MHz or so is attained.</p> |
