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Santamaría-Botello G.;Abdalmalak K.;Schlecht M.;González-Ovejero D.;Sedlmeir F.;Schwefel H.;Malzer S.;Weber H.;Segovia-Vargas D.;McCarthy D.;Murphy J.;Döhler G.;García Muñoz L.
2017 IEEE Antennas and Propagation Society International Symposium, Proceedings
Study of free-space coupling into mm-wave whispering-gallery mode resonators for a radioastronomy receiver
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© 2017 IEEE. In this paper, the coupling mechanism of a free-space Gaussian beam into a whispering-gallery mode resonator through a dielectric lens is mathematically modeled and numerically solved by means of the Schelkunoff-Waterman method (the so called T-matrix method). This approach allows in principle, to quickly analyze the performance of different near-field coupling mechanisms with arbitrary excitations. The aim is to efficiently excite a WGM into a nonlinear dielectric resonator in order to detect the weak mm-wave radiation from the cosmic microwave background (CMB) by up-converting the signal into the optical domain via the nonlinearity of the medium.
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