@article{oai:soar-ir.repo.nii.ac.jp:00013008,
 author = {工藤,  道夫 and 三浦,  興己},
 journal = {信州大学工学部紀要},
 month = {Jul},
 note = {In this peaper, we studied the RC Active filter which contains resistors, condencers as the passive elements, and the Active device. This filter needs no inductors as the passive element, therefore it is easily realized in the integrated circuit. Here, we studied the Active filter of controlled voltoge source type, and gained various design materials quantitativelly. At first, in a quadratic filter, the fundamental element of the high degree filter, we simplified the circuit design by inserting the impedance convertor between the passive elements. Then we expressed the design process, which satisfy the given filtering characteristics and the stability conition of the system. Usually the characteristices of the active element are not ideal, i, e. the amplification gain is finite, and also the effective time constant of the circuit is finite. Here, we calculated the output characteristics quantitatively with the above mentioned condition. Then we constructed the high degree, filter with one quadratic filter and other simple passive C, R. circuits only. In this filter, we located the poles in the transfer function of the overall system adequately, and as example, we can realize the low pass filtering characteristics of 6, 7 degrees, in a good approximation. We can also examined the above gained results experimentally., Article, 信州大学工学部紀要 30: 75-94 (1971)},
 pages = {75--94},
 title = {RC アクティブフィルタの解析と設計},
 volume = {30},
 year = {1971}
}