Abstract-In this paper, propagation properties of both standard and multilayer coplanar lines on different types of silicon substrates, as well as a number of quasi-lumped and stub-type circuit elements, are investigated. For the transmission lines, emphasis is placed on losses. As examples for circuit elements, a lumped parallel resonator and a high-low impedance low-pass filter are demonstrated.

We apply two commonly used approximation schemes to the problem of a symmetric dimer with dynamic diagonal disorder. Since the exact analytical solution for this simple dissipative quantum system is known, we are in position to test the range of validity and the quality of the approximations and to derive guidelines for the application of the approximations to more complex systems.

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