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Simulation and experimental investigation of the radiation efficiency of a dielectric resonator antenna
(2008)2008 IEEE Antennas and Propagation Society International SymposiumIn this paper, we attempt to get a deeper insight into the radiation efficiency of the DRA and the difference of accuracy between the D/G method and the Wheeler cap method by measuring a simple rectangular DRA at C band with both methods. It is, on one hand, confirmed that, the radiation efficiency of the DRA can be as high as 98% at C band. On the other hand, the comparison of the two efficiency measurement methods shows discrepancies ...Conference Paper -
Experimental investigation of the effects of polarization on the measured radiation efficiency of a dielectric resonator antenna
(2008)Proceedings / 2008 MIKON ConferenceConference Paper -
Finite-volume time-domain modeling of the mutual coupling between dielectric resonator antennas in array configurations
(2007)2nd European Conference on Antennas and Propagation (EuCAP 2007)This paper investigates the potential of the finite-volume time-domain (FVTD) method for the numerical modeling of antennas. The most attractive features of conformal time-domain methods such as FVTD are their geometrical flexibility granted by the spatial discretization using inhomogeneous unstructured polyhedral meshes. Three techniques essential for enhancing the applicability of the FVTD method for practical antenna problems are ...Conference Paper -
Pyramidal dielectric resonator antenna for wideband applications
(2007)2nd European Conference on Antennas and Propagation (EuCAP 2007)A coaxial-fed pyramidal dielectric resonator antenna (DRA) is studied theoretically and experimentally. Pyramidal dielectric resonator antennas are attractive candidates for many wireless applications, since they exhibit wide impedance bandwidth and stable radiation characteristics. Their operation relies on the excitation of multiple modes at nearby frequencies in order to obtain a wide operational bandwidth through the overlap of their ...Conference Paper -
Double-Bowtie-Slot-Coupled DRA for Enhanced Bandwidth
(2006)ACES 2006: The 22nd Annual Review of Progress in Applied Computational ElectromagneticsConference Paper -
Effect of the relative feed position on a triple-mode dielectric resonator antenna
(2006)7th International Symposium on Antennas, Propagation and EM TheoryConference Paper -
A Microstrip Excitation Technique in FVTD and its Application to Slot-Fed Dielectric Resonator Antennas
(2006)ACES 2006 : The 22nd Annual Review of Progress in Applied Computational ElectromagneticsConference Paper -
Dual Mode Slot Coupled Cylindrical Dielectric Resonator Antenna
(2006)2006 IEEE Antennas and Propagation Society International SymposiumA simple slot-coupled cylindrical dielectric resonator antenna (DRA) with wideband characteristics is studied theoretically and experimentally. In previous studies, the slot has been designed to radiate at the same frequency as the fundamental HEM 11delta mode. In this paper, the partial independence of the slot mode from the DRA mode is discussed and a simple design is described, in which the slot mode and the DRA mode are offset, allowing ...Conference Paper