What is the use of dielectric resonator antenna?

A dielectric resonator antenna (DRA) is a radio antenna mostly used at microwave frequencies and higher, that consists of a block of ceramic material of various shapes, the dielectric resonator, mounted on a metal surface, a ground plane.

What is cylindrical dielectric resonator antenna?

The antenna is made from a dielectric material with high quality factor. The dielectric resonator is Ba 1-x Pb x Nd 2 Ti 5 O 14 (BNT) and its relative permittivity has a value of 85.2. The feed technique used is direct coupling to micro strip-line.

What is dielectric resonator filter?

Dielectric resonators’ main use is in millimeter-wave electronic oscillators (dielectric resonator oscillator, DRO) to control the frequency of the radio waves generated. They are also used as bandpass filters as well as antennas.

What is a dielectric constant?

Dielectric constant is the ratio of the capacitance formed by two plates with a material between them to the capacitance of the same plates with air as the dielectric. Low dielectric constant values are preferred for high frequency or power applications to minimize electric power loss.

Which is design and analysis of dielectric resonator antenna?

DESIGN AND ANALYSIS OF DIELECTRIC RESONATOR ANTENNA A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF TECHNOLOGY IN COMMUNICATIONS AND SIGNAL PROCESSING BY MUDAVATH SREENU Roll No. –210EC4081 UNDER THE GUIDANCE OF PROF. S K BEHERA

Is there inherent conductor loss in a dielectric resonator?

There is no inherent conductor loss in dielectric resonators. This leads to high radiation efficiency of the antenna. This feature is especially attractive for millimeter (mm)-wave antennas, where the loss in metal fabricated antennas can be high.

How are the modes of a dielectric ring resonator different?

Multiple identical monopole-type modes in an annular shaped dielectric ring-resonator were theoretically analyzed by Guha to show their unique combinations with that due to a traditional electric monopole resulting in UWB antennas. Each mode of a DRA has a unique internal and associated external field distribution.

Which is the most efficient radiator in an antenna?

One of the efficient radiators is dielectric resonator antenna (DRA). Almost all the applied power will be lost in the radiated fields only, with this attractive feature DRAs become much popular in wireless communication field at microwave frequencies.