Engineering Commons^™

High-Power Microwave/ Radio-Frequency Components, Circuits, And Subsystems For Next-Generation Wireless Radio Front-Ends, Kenle Chen

Open Access Dissertations

As the wireless communication systems evolve toward the future generation, intelligence will be the main signature/trend, well known as the concepts of cognitive and software-defined radios which offer ultimate data transmission speed, spectrum access, and user capacity. During this evolution, the human society may experience another round of `information revolution'. However, one of the major bottlenecks of this promotion lies in hardware realization, since all the aforementioned intelligent systems are required to cover a broad frequency range to support multiple communication bands and dissimilar standards. As the essential part of the hardware, power amplifiers (PAs) capable of operating over a …

Rf To Millimeter-Wave Linear Power Amplifiers In Nanoscale Cmos Soi Technology, Jing-Hwa Chen

Open Access Dissertations

The low manufacturing cost, integration capability with baseband and digital circuits, and high operating frequency of nanoscale CMOS technologies have propelled their applications into RF and microwave systems. Implementing fully-integrated RF to millimeter-wave (mm-wave) CMOS power amplifiers (PAs), nevertheless, remains challenging due to the low breakdown voltages of CMOS transistors and the loss from on-chip matching networks. These limitations have reduced the design space of CMOS power amplifiers to narrow-band, low linearity metrics often with insufficient gain, output power, and efficiency.

A new topology for implementing power amplifiers based on stacking of CMOS SOI transistors is proposed. The input RF …