| 摘要 |
PURPOSE:To effectively separate two signals in the same band, by connecting electrodes so that the 1st filter out of two filters consisting of three sets two groups comb teeth can be the band pass and the 2nd filter can have double peak characteristics. CONSTITUTION:A filter consists of 6 sets of comb electrodes,and three sets are taken as one group. Three sets of comb electrodes take the center as input electrodes (a), (b) and both ends are as output electrodes (c), (d), (e). In the 1st filter A, the comb type electrodes are arranged so that the output of the same phase can be pucked up from the output electrodes (c), (d), and in the 2nd filter B, the comb teeth are arranged so that an opposite phase output can be picked up. The filter A acts like a band pass filter and the filter B operates as a double peak filter. As a result, the input for the both filters can be made to the seme one and the size can be made small through one chip. |
