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Negative capacitance (NC) circuits of single-ended and differential topologies are presented, analyzed and characterized. The novel NC designs extend the bandwidth of conventional NC circuits while maintaining low power consumption. To compare the performance of the designs, a figure of merit (FOM) is proposed. A power and area efficient NC scheme employing(More)
An ultra wideband LC voltage-controlled oscillator (LC-VCO) operating in the Ka-band with equally spaced sub-band coarse tuning characteristics is proposed and characterized. A tunable negative capacitance (TNC) circuit technique is used to cancel the fixed capacitance in the LC-tank to extend the tuning range (TR). A digitally-switched varactor coarse(More)
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