In the late 19th century, Lord Rayleigh demonstrated that an infinitely long cylindrical rod made up of dielectric material could serve as a waveguide. Additional theoretical and experimental work done in Germany in early 20th century, offered further insight into the behavior of electromagnetic waves in dielectric rod waveguides. Since a dielectric resonator can be thought of as a truncated dielectric rod waveguide, this research was essential for scientific understanding of electromagn… WebbEin dielektrischer Resonator ( DR) ist ein elektronisches Bauelement, das scharfe Resonanzfrequenzen besitzt. Diese liegen im Mikrowellenbereich und werden von den geometrischen Abmessungen und der Dielektrizitätszahl bestimmt. Sein Resonanzverhalten ähnelt dem eines Hohlleiters, er besitzt aber keine metallischen …
Measurement of dielectric constants of metallic nanoparticles by …
WebbDielectric resonators. Abstract: Microwave passive and active devices containing dielectric resonators and the design procedures used to characterize these components are … WebbA dielectric resonator (DR) director is kept at a suitable distance from the feed point by means of a low-permittivity mechanical support. Figure 30 shows the cross-sectional … imaging tests for cancer
Dielectric Resonators - NASA/ADS
Webb("r) or less, where 0 is the free space wavelength, and "r is the material dielectric-constant. The radiation Q-factor and frequency of resonance can be altered by the aspect ratio of the DRA for a fixed value of "r. With the absence of surface waves, the conductor losses are minimum in DRA and high radiation efficiency can be achieved [11]. Webb13 apr. 2004 · R. D. Richtmyer View Affiliations View Contributors PDF CHORUS ABSTRACT We show that suitably shaped objects made of a dielectric material can function as … WebbRichtmyer, R.D.: Dielectric resonators. Ferroelectrics 10, 285 ( 2004 ). Google Scholar 12 Roessler, D.M.: Kramers–Kronig analysis of non-normal incidence reflection. Br. J. Appl. Phys. 16, 1359 ( 1965 ). CrossRef Google Scholar 13 Akbas, M.A. and Davies, P.K.: Structure and dielectric properties of the Ba (Mg1/3Nb2/3)O3–La (Mg2/3Nb1/3)O3 … imaging tests for stroke