Space Research, Microwave Multi-function Mmic

Multifunctional MMIC, as one of the hot research topics in Microwave and Millimeterwave IC field, has enjoyed a wide application in modern radar engineering.This paper starts by reviewing the history and development of MMIC, as well as, its statesof art, also containing the brief introduction of its most optimal applicable domain—ActivePhased Array Rader. Next, this paper surveys into Demokit HEMT's switch characteristicand all notable MMIC structures for attenuator, phase shifter and amplifier, and proposes aframework for 5-bit attenuator MMIC, 5-bit phase shifter MMIC and gain amplifier MMIC,respectively, and all of them are employed in the x band. After the study and analysis ofkey techniques, above mentioned, this paper by means of the Agilent's Advanced DesignSystem, which is widely used as Microwave and Millimeter wave EDA environment,demonstrates the structural rationality of 5-bit attenuator MMIC, 5-bit phase shifter MMICand gain amplifier MMIC, respectively. In order to keep integrality of this topic, the drivecircuits of phase shifter and attenuator, as well as, the bias control circuit of the gainamplifier. Following GaAs MMIC study, the research is carried on to the GaAs MMICreliability assurance for space applications, including Radiation Environments and Sources,Ionizing Radiation Effects, Displacement Damage Effects, Single Event Effects, RadiationShielding in Semiconductor Devices. In order to maintain the integrality of the GaAsMMIC research in this dissertation, author both describes general arts of GaAs MMICLayout and investigates, along with disposes of the comprehensive information intotabulations, the main Opening GaAs Foundry Services all over the world, at the end of thispaper.