Abstract
With the high demands of the high-speed point-to-point communications and real time multimedia streaming, increasing communication standards are proposed at the millimeter-wave band. Fully integrated wideband and multi-band voltage-controlled oscillators (VCOs), low-noise amplifiers (LNAs) and power amplifiers (PAs) have gained momentum in the past few years. However, the designs of the wideband and multi-band front-end circuits are complicated and challenging in order to achieve high performance on the specifications such as the phase noise of the VCO, the noise figure of the LNA and the efficiency of the PA. In this thesis, fundamental of these circuits are first revisited followed by the design methodologies and discussion of five novel works. Two millimeter-wave wideband and multi-band VCOs are introduced with a high order tank, a switch resonator, and digital controlled artificial dielectric (DiCAD) transmission line. A unique architecture with a 4th-order tank in a dual-band input matching network and a bandpass filter with a notch is proposed to achieve a concur-rent dual-band LNA. Finally, two PAs are designed to provide the concurrent du-al-band operation by leveraging a built-in notch of a transformer that couples from adjacent stages.