| 摘要 |
<p>PURPOSE:To prevent the adverse influence of a reflected signal and to exactly amplify a small signal by consuming the signal reflected by a limiter in heat at an impedance matched terminal element through an isolator. CONSTITUTION:An isolator 19 is provided between a reception antenna 9 and a limiter 15. The isolator 19 introduces a signal from the antenna 9 through a line 20 to a line 16 and introduces the signal reflected at the limiter 15 from the line 16 through the isolator 19 to an output terminal 21. A terminal resistor 22 of the terminal impedance element matched with this output impedance is connected to the terminal 21. Thus, the signal reflected by the limiter 15 to the isolator 19, namely, to the side of the antenna 9 is consumed in heat by the resistor 22, therefore, the signal reflected by the limiter 15 is applied through the line 16 to the limiter 15 again, and the adverse influence caused by the reflected signal can be prevented.</p> |
