| dc.description.abstract | The thesis describes the passive and active circuits for receiver front end, which are both implemented in TSMC 0.18-μm CMOS technology. The study on passive circuits is about various types of parallel capacitors. The implemented circuits include a cascode power constrained low noise amplifier for X band, a noise canceling low noise amplifier for Wimax applications, an RF-grounding wideband matrix distributed amplifier fo UWB applications, a differential voltage controlled oscillator for X band, two quadrature voltage controlled oscillators for Wimax applications, and a transformer feedback voltage controlled oscillator for K band.
In low noise amplifiers, the 11 GHz cascode power constrained low noise amplifier achieves 14.5 dB power gain, 2.8 dB noise figure, -11.3 dB input return loss, and -23.19 dB output return loss. The 1-dB gain compression point and the input third-order intercept point are -13 dBm and +2 dBm, respectively, and total power consumption is 21.4 mW; The 3.5 GHz noise canceling low noise amplifier achieves 10 dB power gain, 3.1 dB noise figure, -24 dB input return loss, and -11 dB output return loss. The 1-dB gain compression point and the input third-order intercept point are -6.5 dBm and +4.5 dBm, respectively, and total power consumption is 17.76 mW. By using optimum bias, the noise figure is 2.5 dB; The RF-grounding wideband matrix distributed amplifier achieves 10.4 dB power gain from 3.6 to 16.1 GHz. The input return loss is -4.5 ~ -21 dB, and the output return loss is lower than -10 dB from 4.5 to 16.1 GHz. The minimum noise figure is 6.5 dB. The 1-dB gain compression point is higher than -11.5 dBm, the input third-order intercept point is higher than +1 dBm, and total power consumption is 33.6 mW.
In voltage controlled oscillators, the 10.7 GHz differential voltage controlled oscillator has a tuning range of 220 MHz, and the output power is -6.44 ~ -4.54 dBm. The phase noise at 100 KHz and 1 MHz achieve -85.55 dBc/Hz and -104.13 dBc/Hz, respectively, and the power consumption of the VCO core is 3.17 mW; The quadrature voltage controlled oscillator I has a tuning range of 300 MHz, and the output power is -7.11 ~ -8.71 dBm. The phase noise at 100 KHz and 1 MHz achieve -95 dBc/Hz and -122.9 dBc/Hz, respectively, and the power consumption of the VCO core is 18 mW; The quadrature voltage controlled oscillator II has a tuning range of 210 MHz, and the output power is -1.25 ~ -4.02 dBm. The phase noise at 100 KHz and 1 MHz achieves -96.65 dBc/Hz and -124.96 dBc/Hz, respectively, and the power consumption of the VCO core is 18 mW; The 23.7 GHz transformer feedback voltage controlled oscillator has a tuning range of 280 MHz, and the output power is 0.524 ~ 2.31 dBm. The phase noise at 1 MHz offset frequency achieves a -118.7 dBc/Hz, and the power consumption of the VCO core is 12 mW. | en_US |