A dielectric resonator antenna (DRA) includes: an electrically conductive ground structure; at least one volume of a dielectric material disposed on the ground structure; a signal feed disposed and structured to be electromagnetically coupled to the at least one volume of a dielectric material; and an electrically conductive fence disposed circumferentially around the at least one volume of a dielectric material, and electrically connected with and forming part of the electrically conductive ground structure.

Systems and methods which provide filtering dielectric resonator antenna (FDRA) configurations implementing radiation cancellation are disclosed. Embodiments of a FDRA provide implementations of dielectric resonator antennas (DRAs) which are configured with a loop feed structure facilitates radiation cancellation to provide radiation nulls at frequencies outside of a desired passband to thereby implement radiation cancellation for filtering functionality of the FDRA. FDRAs of embodiments may be variously polarized, such as to provide linear polarization or circular polarization.

A device comprising: a substrate; a semiconductor die mounted on the substrate; a transmit antenna fabricated on the substrate and configured to transmit radio-frequency (RF) signals at least at a first center frequency; a receive antenna fabricated on the substrate and configured to receive RF signals at least at a second center frequency different than the first center frequency; and circuitry integrated with the semiconductor die and configured to provide RF signals to the transmit antenna and to receive RF signals from the receive antenna.

The invention relates to an antenna device having a printed circuit board and at least one antenna radiator which is arranged on the printed circuit board and can be excited by the printed circuit board or a coupling window arranged thereupon, which radiator is designed in such a manner that it comprises at least two polarisations, which are preferably orthogonal to each other, and at least two resonance frequency ranges which are continuous or different to one another and at an interval from one another, wherein the antenna radiator comprises: at least one first dielectric body mounted on the printed circuit board and designed as a resonator, having a first relative permittivity, at least one second dielectric body designed as, having a second relative permittivity, wherein the first relative permittivity is greater than the second relative permittivity and wherein the second dielectric body is formed in such a manner that it is arranged over the at least one first dielectric body in such a manner that it bundles or scatters the electrical field in a plane orthogonal to the main beam direction at least in one of the resonance frequency ranges. The invention also relates to an antenna array.

An access system for a vehicle is provided and includes antennas and an access module. The antennas are configured to each receive a signal transmitted from a portable access device to the vehicle. One of the antennas is a circular polarized antenna. The access module is configured to: downconvert the received signal to generate an in-phase signal and a quadrature phase signal; execute a music algorithm to determine angles of arrival of the received signal as received at the antennas; determine a distance between the portable access device and the vehicle based on the angles of arrival; and permit access to the vehicle based on the distance.

An access system for a vehicle is provided. The access system includes antennas and an access module. The antennas are configured to each receive a signal transmitted from a portable access device to the vehicle. The signal is transmitted on a 2.4 gigahertz frequency. The access module is configured to: downconvert the received signal to generate an in-phase signal and a quadrature phase signal; perform carrier phase based ranging including implementing a music algorithm to (i) determine a distance between the portable access device and the vehicle, and (ii) determine angles of arrival of the received signal as received at the antennas; determine a location of the portable access device relative to the vehicle based on the distance and the angles of arrival; and permit access to the vehicle based on the location.

A dielectric resonator antenna, DRA, includes: an electrically conductive ground structure; a plurality of volumes of dielectric materials disposed on the ground structure comprising N volumes, N being an integer equal to or greater than 3, disposed to form sequential layered volumes V.sub.i, i being an integer from 1 to N, wherein volume V.sub.1 forms an innermost first volume, wherein a successive volume V.sub.i+1 forms a layered shell disposed over and at least partially embedding volume V.sub.i, wherein volume V.sub.N at least partially embeds all volumes V.sub.1 to V.sub.N1; wherein a portion of the dielectric material of volume V.sub.N bifurcates at least a portion of volumes V.sub.1 to V.sub.N1; wherein the plurality of volumes of dielectric materials has a first effective dielectric constant along a first geometrical path, and has a second effective dielectric constant along a second geometrical path that is lower than the first effective dielectric constant.

A dielectric resonator antenna, DRA, includes: a ground structure; a plurality of volumes of dielectric materials disposed on the ground structure having N volumes V.sub.1 to V.sub.N, N being an integer equal to or greater than 3; a signal feed disposed and structured to be electromagnetically coupled to one or more of the plurality of volumes of dielectric materials; wherein adjacent ones of the plurality of volumes of dielectric materials have different dielectric constants with respect to each other; wherein each volume V.sub.2 to V.sub.N1 includes a dielectric material other than air; and, wherein at least volume V.sub.1 has a cross sectional shape as observed in an elevation view with an overall height that is greater than half its respective overall width.

A dielectric resonator antenna, DRA, includes: an electrically conductive ground structure; a dielectric material disposed on the ground structure; a signal feed electromagnetically coupled to the dielectric material; wherein the dielectric material provides a continuous uninterrupted internal geometric path from a side of the signal feed to an opposing side through a top of the dielectric material that is configured to at least partially support a TE radiating mode; and, the dielectric material defining therein a first geometrical path having a first direction, as observed in a plan view of the DRA, and defining therein a second geometrical path having a second direction, as observed in the plan view of the DRA, that is orthogonal to the first direction of the first geometrical path, the second geometrical path having an effective dielectric constant that is less than an effective dielectric constant of the first geometrical path, the first geometrical path, relative to the second geometrical path, being a favored path for E-field lines associated with the DRA.

A dielectric resonator antenna having a dielectric substrate with a ground plane and a dielectric resonator element arranged on the ground plane includes a conductive feeding assembly operable to excite one or more dielectric resonator modes of the dielectric resonator element for generation of a first circularly polarized electromagnetic field, and a radiating arrangement operable to produce a second circularly polarized electromagnetic field complementary to the first circularly polarized electromagnetic field. The first and second circularly polarized electromagnetic fields, when combined, are arranged to provide a unilateral circularly polarized electromagnetic field.