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Access Type

Open Access

Document Type


Degree Program

Electrical & Computer Engineering

Degree Type

Master of Science in Electrical and Computer Engineering (M.S.E.C.E.)

Year Degree Awarded


Month Degree Awarded



RF CMOS, X-Band, Quadrature Conversion, Injection Locking, Quadrature Coupling, Inegrated Mixer


This thesis describes the design and measurement of an X-band IQ up/down converter that has been fabricated on a 180nm RF CMOS process. This converter includes components for mixing, frequency doubling, quadrature generation, amplification, and limiting. The specific circuit topologies used include passive double-balanced mixers, RC polyphase filters, and injection locked LC oscillators.

The converter is part of a transceiver chain that will make up the dedicated circuitry for each active antenna element of a phased-array radar. An active antenna element combines a radiator with its own transceiver subsystem. A phased-array radar, NetRad, is under development at the University of Massachusetts Amherst and will require thousands of active antenna elements. This motivates the need for low-cost integrated solutions. A silicon-based RF CMOS process provides a low-cost candidate technology to fulfill this requirement.


First Advisor

Robert W. Jackson