Antenova Limited

Tim John Palmer

Simon Philip Kingsley

James William Kingsley

Steven Gregory O'Keefe

Scott William Spencer Tyler

Steven Puckey

Steven Martin

Sarah Wilson

There is disclosed a dielectric resonator antenna adapted to resonate in an EHresonance mode, and also a method for the manufacture thereof. The desired resonance mode is achieved by careful positioning of a dielectric resonator () on a grounded substrate (), the resonator () being fed by way of a microstrip feed line () and a slot () in the grounded substrate (). Because the EHresonance mode has nulls in a direction of longitudinal extension of the dielectric resonator (), a plurality of antenna can be placed end-to-end so as to form an array with reduced coupling between adjacent antennas and with vertical polarisation, which is desirable for mobile communications applications.

Dielectric resonator antenna

There is disclosed an antenna device including a dielectric substrate having a first, upper surface and a second, lower surface, a conductive groundplane on the second surface or located between the first and second surfaces. At least two conductive feedlines are formed on the first surface and extend from feed points to predetermined radiating points at edge or corner parts of the first surface. The groundplane does not extend under the radiating points. The groundplane is configured as to extend between the radiating points and the feedlines are widened at the radiating points and/or are provided with discrete dielectric elements at the radiating points. The antenna device provides broadband performance and good diversity within a small space.

Multiple antenna diversity on mobile telephone handsets, PDAs and other electrically small radio platforms

A dielectric antenna comprising a dielectric element mounted on a first side of a dielectric substrate, a microstrip feed located on the first side of the substrate and extending between the substrate and the dielectric element, and a conductive layer formed on a second side of the substrate opposed to the first, wherein an aperture is formed in the conductive layer at a location corresponding to that of the dielectric element. The antenna is electrically small, has wide bandwidth and good gain characteristics, is efficient and not easily detuned.

Electrically small dielectric antenna with wide bandwidth

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Cambridge, United Kingdom

Tim John Palmer