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Spectrum Regrowth For Ofdm-Based Lte And Wimax Systems, Bosi Chen
Spectrum Regrowth For Ofdm-Based Lte And Wimax Systems, Bosi Chen
Dissertations and Theses
An abstract of the thesis of Bosi Chen for the Master of Science in Electrical and Computer Engineering presented Aug 1st, 2012. Title: Spectrum Regrowth for OFDM-based LTE and WiMAX Systems. In OFDM-based (Orthogonal Frequency Dimension Multiplexing) LTE (Long Term Evolution) and WiMAX (Worldwide Interoperability for Microwave Access) Systems, one of the critical components is the RF power amplifier. With current technologies, RF power amplifiers are not perfectly linear. The nonlinearity of an RF power amplifier is one of the main concerns in RF power amplifier design. The nonlinearity control is described by the out-of-band power emission levels, and the …
A 40 Ghz Power Amplifier Using A Low Cost High Volume 0.15 Um Optical Lithography Phemt Process, Kenneth W. Mays
A 40 Ghz Power Amplifier Using A Low Cost High Volume 0.15 Um Optical Lithography Phemt Process, Kenneth W. Mays
Dissertations and Theses
The demand for higher frequency applications is largely driven by bandwidth. The evolution of circuits in the microwave and millimeter frequency ranges always demands higher performance and lower cost as the technology and specification requirements evolve. Thus the development of new processes addressing higher frequencies and bandwidth requirements is essential to the growth of any semiconductor company participating in these markets. There exist processes which can perform in the higher frequency design space from a technical perspective. However, a cost effective solution must complement the technical merits for deployment. Thus a new 0.15 um optical lithography pHEMT process was developed …