A wideband‐stacked rectangular dielectric resonator antenna

Abstract

A stacked rectangular dielectric resonator antenna (DRA) is studied experimentally. The achieved impedance bandwidth of two DR stacked antenna is about 73%. By stacking two different permittivity DRs, the multi‐band of single element DRA is changed to single wideband giving out improvement in bandwidth. The antenna parameters like radiation patterns and return loss are measured and presented. These antennas may provide applications in which large bandwidth is needed. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2432–2434, 2010; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25503

Modified cylindrical dielectric resonators excited with loaded fork monopole antenna

“…A major fraction of the recent studies concentrates on enhancing the impedance bandwidth of the DRA in view of different applications. For this purpose, various techniques have been explored, which include a removed air‐volume from a cylindrical dielectric resonator (CDR) [1], vertical strip with half‐split cylindrical resonator [2], stacked rectangular dielectric [3], U‐shaped dielectric resonator with conformal triangular patch [4], using a slot‐coupled cylindrical DRA with the dual‐mode capability [5], exciting two radiation modes in a coaxial‐fed DRA [6], applying three different methods of impedance matching, dielectric and ground plane shaping procedures in a hybrid monopole DRA [7], and using a rectangular dielectric resonator and a bevel‐shaped patch excitation together with an air‐gap inserting technique in Ref. 8.…”