Planar microstrip UWB bandpass filter using U-shaped slot coupling
Due to the non-zero m for wideband performance and the slightly asymmetrical configuration between the two open sides, the inductive connection between the waveguide transmission line and the back-to-back triangle CSRRs is represented by [L.sub.c], [L.sub.s], respectively; The capacitive coupling, which is realized by the slot coupling between the waveguide transmission line and CSRRs, is denoted by [C.sub.c], [C.sub.s], respectively.
Chang, "Cross-coupled bandpass filters using QMSIW cavities and S-shaped slot coupling structures," Journal of Electromagnetic Waves and Applications, Vol.
In this paper, a multiband dielectric resonator antenna fed by a monopole slot coupling
The accuracy of the proposed method is verified from the comparison of the varying field distribution and the time-domain and frequency-domain slot coupling results.
To model the slot coupling, the two loops ([C.sub.1], [C.sub.2]) in Fig.
Bandwidth enhancement techniques to improve the bandwidth of dielectric resonator antennas, such as, stacking multiple DRAs , using parasitic dielectric resonator elements , thick substrate, utilizing special dielectric resonator geometries , slot coupling etc are reported.
Slot coupling offers the advantage of having the feed network located below the ground plane, isolating the radiating slot from any unwanted coupling from the feed.
from stripline is mostly preferred as it provides wide bandwidth and easy mounting of the active devices below the slot radiator.
In this letter, we introduce a broadband circularly polarized cylindrical DRA excited by an L-shaped microstrip feed line through annular slot coupling
. The annular slot can resonate near the resonant frequency of the HEM11(s mode of the DRA, thus providing greater bandwidth than ordinary dielectric resonator antennas.
Fan, "An extended cavity method to analyze slot coupling
between printed circuit board cavities," IEEE Trans.