—A low phase noise CMOS complementary cross-coupled LC-tank voltage-controlled oscillator (VCO), implemented with TSMC 0.18 µm 1P6M CMOS technology, is presented. Double pair pseudo-resistance transistors biased by the tapped center of the inductor are utilized to reduce the DC bias current. The circuit consumes 1.55 mA from a 1.5 V supply voltage which… (More)
Current ultra-high frequency air interface protocols help users get the true benefits of second-generation RFID standards. However, these technologies also have some security drawbacks and limitations.