Modeling of In(0.49)Ga(0.51)P/GaAs Heterojunction Bipolar Transistors for ADC and MMIC Circuit Design

State-of-the-art monolithic Ka-band voltage-controlled oscillators were designed, tested and fabricated. Power output was $>$5 dBm and the phase noise was $<$90 dBc/Hz at 100 kHz. The phase noise and output power are also tested vs. the ambient temperature of the oscillator. Another design is presented that exhibits a tuning range of 2 GHz. The initial design procedure is described in detail. Several monolithic varactors are empirically assessed for their contribution to the phase noise. Preliminary results for coplanar resonator structures are presented. These are presented as a means to enhance the frequency stability of the circuit. Design architectures based on the resonator structure are presented. In addition, to improve the tuning range of the state-of-the-art oscillator, several wave-guide lengths were adjusted. These are included as well.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Electrical Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Barlage, Douglas William

Contributors dc:contributor

• Feng, Milton

• Engineering, Electronics and Electrical

Language dc:language

eng

Identifier

(MiAaPQ)AAI9812526

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/81199