Dept. of Electr. Eng., National Taiwan Univ.Hwang, Yuh-ShyanYuh-ShyanHwangChiu, WenweiWenweiChiuSHEN-IUAN LIUWu, Dong-ShiuhDong-ShiuhWuWu, Yan-PeiYan-PeiWu2007-04-192018-07-062007-04-192018-07-061995-0800135194http://ntur.lib.ntu.edu.tw//handle/246246/2007041910042591https://www.scopus.com/inward/record.uri?eid=2-s2.0-0029356447&doi=10.1049%2fel%3a19951097&partnerID=40&md5=8320057f72524a2e237aa1eb3b103a09High-frequency linear transformation (LT) elliptic filters employing a minimum number of operational transconductance amplifiers (OTAs) and capacitors are presented. Based on the LT, an OTA-C elliptic filter can be realised efficiently by adding capacitors to the relative all-pole filter as passive prototype counterparts. The canonical filter with all nodes having a desired capacitance, which is suitable for high-frequency operation, is developed. As an example, a new third-order elliptic lowpass filter is synthesised. Experimental results arc obtained to verify the theoretical analysis. Furthermore, the proposed circuit can be extended to higher-order filters. © 1995, IEE. All rights reserved.application/pdf282155 bytesapplication/pdfen-USActive filters; Elliptic filters; Operational transconductance amplifiersCapacitance; Capacitors; Electric network analysis; Electric network synthesis; Low pass filters; Operational amplifiers; Passive filters; Transconductance; All pole filters; Elliptic filters; High frequency linear transformation; Operational transconductance amplifiers; Active filtersjournal article2-s2.0-0029356447http://ntur.lib.ntu.edu.tw/bitstream/246246/2007041910042591/1/00469170.pdf