Topic
Dielectric resonator antenna
About: Dielectric resonator antenna is a research topic. Over the lifetime, 8199 publications have been published within this topic receiving 111090 citations. The topic is also known as: DRA.
Papers published on a yearly basis
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TL;DR: In this article, an acoustic energy harvester using a coupled resonance structure of a sonic crystal resonator and an electromechanical Helmholtz resonator with a piezoelectric composite diaphragm is proposed to enhance energy harvesting.
Abstract: An acoustic energy harvester using a coupled resonance structure of a sonic crystal resonator and an electromechanical Helmholtz resonator with a piezoelectric composite diaphragm is proposed to enhance energy harvesting. Due to acoustic resonance coupling between the sonic crystal resonator and the Helmholtz resonator, the coupled resonance structure has a larger acoustic pressure magnification than each individual resonator structure. Consequently, the stronger vibration of the diaphragm and the higher harvesting efficiency are obtained. Experimental results show that the proposed harvester exhibits ~23 and ~262 times higher maximum harvesting efficiencies than the sonic crystal resonator and the Helmholtz resonator structure, respectively.
61 citations
TL;DR: In this paper, the resonant frequencies for the fundamental modes in circular cylindrical and rectangular parallelopiped high dielectric resonators have been calculated by computer for a range of values of physical dimensions and relative Dielectric constant.
Abstract: The resonant frequencies for the fundamental modes in circular cylindrical and rectangular parallelopiped high dielectric resonators have been calculated by computer for a range of values of physical dimensions and relative dielectric constant. The frequency range extends from zero to 50 kMc/s, the relative dielectric constant from 50 to 1800, and physical dimensions from zero to 500 roils. Results are presented in graphical form with frequency plotted vs. resonator length for parametric values of relative dielectric constant and cross-sectional dimensions. A brief review of earlier work with high dielectric resonators is included. Expressions for the resonant frequency and fundamental mode field configurations are given.
61 citations
05 Oct 2003
TL;DR: In this paper, the longitudinal coupling of thin film bulk acoustic resonator (FBAR) is investigated in order to design coupled resonator filter (CRF), which is dedicated to high-frequency filter applications.
Abstract: The longitudinal coupling of thin film bulk acoustic resonator (FBAR) is investigated in order to design coupled resonator filter (CRF). Such devices are dedicated to high-frequency filter applications. A scattering matrix algorithm that was already used to simulate simple FBARs devices is used to study the behavior of these structures. The principle of the algorithm is recalled and is explained how it can be adapted to the simulation of multiport devices. Then an example of filter design is given.
61 citations
TL;DR: In this paper, a stub-loaded quad-mode resonator with even-odd-mode analysis was proposed to explain the modal characteristics of a dual-band bandpass filter.
Abstract: This letter presents a novel stub-loaded quad-mode resonator Due to the structure geometry, even-odd-mode analysis is applied twice to explain the modal characteristics Each of the four modes equivalent circuits is a quarter-wavelength resonator, so the quad-mode resonator has a compact size The stub-to-stub coupling is introduced to split two identical odd-modes Meanwhile, these two coupling stubs are folded inward, and a new transmission zero is produced, which separates four modes into two parts corresponding to two passbands: the first one is formed by even-modes, and the second one is composed by odd-modes The center frequency and bandwidth of each passband can be controlled by the corresponding physical dimensions For demonstration, a dual-band bandpass filter (BPF) using the proposed quad-mode resonator is designed The simulated and measured results with good agreement are presented
61 citations
TL;DR: In this paper, a rectangular dielectric resonator antenna (DRA) with a broadband circular polarization (CP) radiation was presented using a single feed excitation, which provided a circular polarization over a bandwidth of 7% that has been increased further to 13% by adding a concentric parasitic open half-loop in the structure.
Abstract: A rectangular dielectric resonator antenna (DRA) with a broadband circular polarization (CP) radiation is presented using a single feed excitation. A simple feed method is proposed using an open half-loop antenna that consists of three metallic strips. Utilizing such an excitation has provided a circular polarization over a bandwidth of 7% that has been increased further to 13% by adding a concentric parasitic open half-loop in the structure. This has been achieved in conjunction with a 20% impedance matching bandwidth over the same frequency range. The configuration has been rigorously modeled using a method of moments (MoM) model. The computed and measured results are in good agreement.
60 citations