Two types of floating active resistors based on a complementary regulated cascode topology with cross-coupled regulated transistors are presented in this paper. The first topology is a high swing complementary regulated cascode active resistor. The second topology is a complementary common gate with a regulated cross coupled transistor. The small-signal input resistances of the floating resistors are derived. Three graphs of the input current versus the input voltage for different aspect ratios are designed and plotted using the Cadence Spectre 0.18-µm Rohm Semiconductor process. The total harmonic distortion graphs are plotted for three different aspect ratios with different input-voltage amplitudes and different input frequencies. From the simulation results, it is observed that a resistance of approximately 8.52 MΩ can be obtained from supply voltage at ±0.9 V.<\/p>\r\n","references":"[1]\tA. Bilotti, \u201cOperation of a MOS transistor as a variable resistor,\u201d Proc. IEEE, vol. 54, no. 8, pp. 1093\u20131095, Aug. 1966.\r\n[2]\tI. S. Han and S. B. Park, \u201cVoltage-controlled linear resistor by two MOS transistors and its application to active RC filter MOS integration,\u201d Proc. IEEE, vol. 72, no. 11, pp. 1655\u20131657, Nov. 1984.\r\n[3]\tK. Nagaraj, \u201cNew CMOS floating voltage-controlled resistor,\u201d Electron. Lett., vol. 22, no. 12, pp. 667\u2013668, Jun. 1986.\r\n[4]\tS. P. Singh, J. V. Hanson, J. Vlach, \u201cA new floating resistor for CMOS technology,\u201d IEEE Trans. Circuits Syst., vol. 36, no. 9, pp. 1217\u20131220, Sep. 1989.\r\n[5]\tG. Wilson and P. K. Chan, \u201cNovel voltage-controlled grounded resistor,\u201d Electron. Lett., vol. 25, no. 25, pp. 1725\u20131726, Dec. 1989.\r\n[6]\tW. Surakampontorn, \u201cCMOS floating voltage-controlled negative resistors,\u201d Electron. Lett., vol. 28, no. 15, pp. 1457\u20131459, Jul. 1992.\r\n[7]\tS. Sakurai and M. Ismail, \u201cA CMOS square-law programmable floating resistor independent of the threshold voltage,\u201d IEEE Trans. Circuits Syst., vol. 39, no. 8, pp. 565\u2013574, Aug. 1992.\r\n[8]\tR. Senani, \u201cRealisation of linear voltage-controlled resistance in floating form\u201d, Electron. Lett., vol. 30, no. 23, pp. 1909\u20131911, Nov. 1994.\r\n[9]\tC. Popa, \u201cLow-area tunable CMOS resistor with improved linearity,\u201d in ICECS 2010, pp. 190\u2013193.\r\n[10]\tB. J. Hosticka, \u201cImprovement of the gain of MOS amplifiers,\u201d IEEE J. Solid-State Circuits, vol. 14, no. 6, pp. 1111\u20131114, Dec. 1979.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 131, 2017"}