| 摘要 |
<p>PURPOSE:To give transmitted electric power to be a constant frequency response characteristic by receiving only the electric power of a side lobe as to electric power radiated from a transmitting antenna by using a monitor antenna having the same frequency characteristics with a receiving antenna, feeding the received signal of the monitoring antenna back negatively and controlling the transmitted electric power. CONSTITUTION:The electric power ratio of the main lobe and side lobe and the sent and received electric power ratio of the transmitting antenna ANTS and monitoring antenna ANTM are constant values which are determined corresponding to various elements and structure of a device in operation once they are determined, and the transmitted electric power is received at a constant ratio by the monitoring antenna ANTM having the same frequency characteristics with the receiving antenna ANTR. Therefore, a negative feedback loop wherein both the antennas ANTS and ANTR operate complementarily to flatten the frequency characteristics of the signal obtained with the output of the monitoring antenna ANTM is constituted to obtain a constant electric power control loop whose feedback constant is constant. Consequently, the transmitted electric power can be improved so as to have constant response characteristics.</p> |
