extended interaction oscillators (eio) are vacuum electronic sources of microwave, millimeter-wave and terahertz radiations. in this paper, eio is investigated by using a circuit model. the value of the coupling element in the model is evaluated from the near band-edge dispersion characteristics of the rf structure. the end external loading of the interaction structure is equivalently modeled b...

The anisotropic and non-linear transport properties of the quasi one-dimensional organic conductor (TMTSF)2PF6 have been studied by dc, radiofrequency, and microwave methods. Microwave experiments along all three axes reveal that collective transport, which is considered to be the fingerprint of the spin-density-wave condensate, also occurs in the perpendicular b′ direction. The pinned mode res...

Quantum-limited microwave parametric amplifiers are genuine key pillars for rising quantum technologies and in general applications that rely on the successful readout of weak signals by adding only minimum amount noise allowed mechanics. In this perspective, after providing a brief overview different families amplifiers, we focus traveling wave (TWPAs), underlining achievements last years pres...

MAXIPOL was the first experiment to measure the polarization of the cosmic microwave background with a rotating half wave plate. We discuss the magnitude and sources for instrumental polarization and polarization rotation in the instrument.

We analyze the polarization properties of the tilted off-axis dual-reflector submillimeter-wave telescope on the ESA PLANCK Surveyor designed for measuring the temperature anisotropies and polarization characteristics of the cosmic microwave background.

Large spatially distributed microwave and millimeter-wave systems involve the interaction of linear and nonlinear circuits with their electromagnetic environment. Here a circuit-level approach to the modeling of circuit-field interactions is developed.