| 摘要 |
<p>The frequency divider includes a series LC resonant circuit connected directed across a parallel LC resonant circuit. One circuit is resonant at a first frequency and the other circuit is resonant at a second frequency that is a multi-integer-divided quotient of the first frequency. Either or both of the series and parallel resonant circuits includes a variable capacitance element, such as a varactor, in which the capacitance varies in accordance with the voltage across the variable capacitance element. The variation of the capacitance of the variable capacitance element in response to variations in energy in the higher-frequency resonant circuit resulting from receipt electromagnetic radiation at the first frequency causes the lower-frequency resonant circuit to transmit electromagnetic radiation at the second frequency. use/ ADVANTAGE : Also for article location determn. e.g. for buried pipes. Divider is highly efficient ao as to be detectable over large range, and is stable in sensitivity or detection range due to direct connection of two resonant circuits.</p> |
