| 摘要 |
PURPOSE:To obtain a prescribed multiple wave output by adopting the constitution such that a band pass filter of an output section passes a frequency being thrice the fundamental frequency of the band characteristic. CONSTITUTION:The titled multiplier is provided with a band filter means passing a signal of a frequency nf2 to the output section with respect to a frequency f1 of an input signal, and the band pass filter means 50 is constituted to pass through a frequency being thrice the fundamental frequency with respect to the pass band characteristic of the means 50. The band pass filter 50 can passes a signal of frequency off number times the fundamental frequency. A side couple type filter as the means 50 is used. In this case, widths W0, W1, W2 and gaps G1, G2 are selected the same as those of a conventional filter, and lengths L1, L2 of the resonator is selected to be thrice those of the conventional filter. Thus, the side couple type filter is realized as the design value and an excellent filter characteristic is realized.
|
