| 摘要 |
<p>PROBLEM TO BE SOLVED: To change over the reception of UHF signals and VHF signals without using a change-over switch and to simplify a circuit compared to a conventional one without deteriorating the passing characteristic of the signal. SOLUTION: A UHF signal passing part 110 and a VHF signal passing part 120 are connected in parallel to the post stage of a trap high pass filter part 100 where an unwanted signal is removed and UHF and VHF signals are caused to pass. In the UHF signal passing part 110, respective circuit constants are set as far as possible so that the circuit impedance does not become a value that affects the VHF signal passing part 120. In the VHF signal passing part 120, respective circuit constants are set as far as possible so that the circuit impedance does not become a value that affects the VHF signal passing part 120.</p> |
