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The designed structure is achieved by the combination of one ordinary CCCII, one cross-coupled OTA and one active resistor. An inverse relationship between the intrinsic resistance and external bias current is created for the first time in CMOS CCCII design, which results in wide tuning range of [Formula: see text]. Performance of the proposed circuit is discussed by detailed analysis. The CMOS CCCII is simulated in TSMC 0.18[Formula: see text][Formula: see text]m RF CMOS technology. The simulation results confirm that the proposed CMOS CCCII achieves a wide tunable [Formula: see text] (from 197.4[Formula: see text][Formula: see text] to 27.23[Formula: see text]k[Formula: see text]) while maintaining favorable performance in bandwidth, transfer gain and linear range. In addition, a new reconfigurable structure, which can function as a universal filter or a quadrature oscillator via controlling an enabled switch, is given as an application example to validate the feasibility of the proposed CMOS CCCII. <\/jats:p>","DOI":"10.1142\/s0218126618501980","type":"journal-article","created":{"date-parts":[[2018,3,16]],"date-time":"2018-03-16T02:20:52Z","timestamp":1521166852000},"page":"1850198","source":"Crossref","is-referenced-by-count":6,"title":["A Novel CMOS CCCII with Wide Tunable R<sub><i>x<\/i><\/sub> and Its Application"],"prefix":"10.1142","volume":"27","author":[{"given":"Cuirong","family":"Zhu","sequence":"first","affiliation":[{"name":"College of Information Science and Engineering, Hunan University, Changsha 410082, P. R. China"}]},{"given":"Chunhua","family":"Wang","sequence":"additional","affiliation":[{"name":"College of Information Science and Engineering, Hunan University, Changsha 410082, P. R. 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