90 nm CMOS CMOS circuit CMOS design CMOS detector CMOS rectifier History of engineering & technology LC tank LC-VCO MedRadio RF receiver Technology: general issues VLSI analog microelectronics design analog system artificial neural network biomedical device biosensors blocker complex thinking concurrent-mode current source current tail current-input ADC current-reuse current-shaping differential detector IC dynamic threshold cancellation technique educational innovation figure-of-merit