Robert W. JacksonJohnson, Ryan C2024-04-262011-08-292011-09910.7275/2202791https://hdl.handle.net/20.500.14394/47598This 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.RF CMOSX-BandQuadrature ConversionInjection LockingQuadrature CouplingInegrated MixerElectrical and Computer EngineeringSystems and Communicationsthesis