US 2012/0268347 A1Published application

Compact Dual-Frequency Patch Antenna

AssigneeTopcon Positioning Systems, Inc.

InventorsDmitry Tatarnikov, Anton Stepanenko, Andrey Astakhov

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Abstract

A dual-frequency patch antenna includes a ground plane, an inside radiator, and an outside radiator. The inside radiator is configured as a region with a periphery, along which is a series of first protrusions separated by first grooves. The outside radiator is configured as a ring with an outer periphery and an inner periphery, along which is a series of second protrusions separated by second grooves. A set of conducting elements electrically connect the series of second protrusions with the ground plane. The inside radiator and the outside radiator can be fabricated on a dielectric substrate separated from the ground plane by a dielectric solid or air. The inside radiator and the outside radiator can be disposed on the same surface or on different surfaces of the dielectric substrate, with specific geometries of the first protrusions and first grooves relative to the second protrusions and second grooves.

Claims40

Dependent claims

A dual-frequency patch antenna comprising:

a ground plane;
a dielectric substrate having a first surface facing away from the ground plane and a second surface facing towards the ground plane;
a dielectric medium disposed between the ground plane and the second surface of the dielectric substrate;
a first radiator disposed on the first surface of the dielectric substrate, wherein the first radiator comprises:
a first region bounded by a first periphery;
and
a series of first protrusions separated by a series of first grooves, wherein the series of first protrusions separated by the series of first grooves is disposed along the first periphery;
a second radiator disposed on the first surface of the dielectric substrate, wherein the second radiator comprises:
a second region bounded by a second periphery and a third periphery, wherein:
the second periphery is disposed within the third periphery;
and
the first periphery is disposed within the second periphery;
and
a series of second protrusions separated by a series of second grooves, wherein:
the series of second protrusions separated by the series of second grooves is disposed along the second periphery;
each first protrusion in the series of first protrusions is disposed partially within a corresponding second groove in the series of second grooves;
each first protrusion in the series of first protrusions does not contact any second protrusion in the series of second protrusions and does not contact the second periphery;
each second protrusion in the series of second protrusions is disposed partially within a corresponding first groove in the series of first grooves;
and
each second protrusion in the series of second protrusions does not contact the first periphery;
and
a set of conducting elements, wherein:
each conducting element in the set of conducting elements has a first end and a second end;
and
for each conducting element in the set of conducting elements:
the first end is electrically connected to a location selected from the group consisting of:
a location within a corresponding second protrusion in the series of second protrusions;
and
a location within the second region adjacent to a corresponding second protrusion in the series of second protrusions;
and
the second end is electrically connected to the ground plane.

28 more elements

A dual-frequency patch antenna comprising:

a ground plane;
a dielectric substrate having a first surface facing away from the ground plane and a second surface facing towards the ground plane;
a first radiator disposed on the first surface of the dielectric substrate, wherein the first radiator comprises:
a first region bounded by a first periphery;
and
a series of first protrusions separated by a series of first grooves, wherein the series of first protrusions separated by the series of first grooves is disposed along the first periphery;
a second radiator disposed on the second surface of the dielectric substrate, wherein the second radiator comprises:
a second region bounded by a second periphery and a third periphery, wherein the second periphery is disposed within the third periphery;
and
a series of second protrusions separated by a series of second grooves, wherein the series of second protrusions separated by the series of second grooves is disposed along the second periphery;
wherein the first radiator is disposed with respect to the second radiator such that:
a projection, onto the second surface, of the first periphery is disposed within the second periphery;
for each first protrusion in the first series of protrusions:
a projection, onto the second surface, of the first protrusion is disposed partially within a corresponding second groove in the series of second grooves;
for each second protrusion in the second series of protrusions:
the second protrusion is disposed partially within a projection, onto the second surface, of a corresponding first groove in the series of first grooves;
a dielectric medium disposed between the ground plane and the second surface of the dielectric substrate and between the ground plane and the second radiator;
and
a set of conducting elements, wherein:
each conducting element in the set of conducting elements has a first end and a second end;
and
for each conducting element in the set of conducting elements:
the first end is electrically connected to a location selected from the group consisting of:
a location within a corresponding second protrusion in the series of second protrusions;
and
a location within the second region adjacent to a corresponding second protrusion in the series of second protrusions;
and
the second end is electrically connected
to the ground plane.

26 more elements

A dual-frequency patch antenna comprising:

a ground plane;
a dielectric substrate having a first surface facing away from the ground plane and a second surface facing towards the ground plane;
a first radiator disposed on the second surface of the dielectric substrate, wherein the first radiator comprises:
a first region bounded by a first periphery;
and
a series of first protrusions separated by a series of first grooves, wherein the series of first protrusions separated by the series of first grooves is disposed along the first periphery;
a second radiator disposed on the first surface of the dielectric substrate, wherein the second radiator comprises:
a second region bounded by a second periphery and a third periphery, wherein the second periphery is disposed within the third periphery;
and
a series of second protrusions separated by a series of second grooves, wherein the series of second protrusions separated by the series of second grooves is disposed along the second periphery;
wherein the first radiator is disposed with respect to the second radiator such that:
a projection, onto the first surface, of the first periphery is disposed within the second periphery;
for each first protrusion in the series of first protrusions:
a projection, onto the first surface, of the first protrusion is disposed partially within a corresponding second groove in the series of second grooves;
and
for each second protrusion in the series of second protrusions:
the second protrusion is disposed partially within a projection, onto the first surface, of a corresponding first groove in the series of first grooves;
a dielectric medium disposed between the ground plane and the second surface of the dielectric substrate and between the ground plane and the first radiator;
and
a set of conducting elements, wherein:
each conducting element in the set of conducting elements has a first end and a second end;
and
for each conducting element in the set of conducting elements:
the first end is electrically connected to a location selected from the group consisting of:
a location within a corresponding second protrusion in the series of second protrusions;
and
a location within the second region adjacent to a corresponding second protrusion in the series of second protrusions;
and
the second end is electrically connected to the ground plane.

26 more elements

A dual-frequency patch antenna comprising:

a ground plane;
a dielectric substrate having a first surface facing away from the ground plane and a second surface facing towards the ground plane;
a first radiator comprising:
a first region bounded by a first periphery, wherein the first region is disposed on the second surface;
a series of first protrusions separated by a series of first grooves, wherein:
the series of first protrusions separated by the series of first grooves is disposed on the first surface;
and
the series of first protrusions separated by the series of first grooves is disposed along a projection, onto the first surface, of the first periphery;
and
a set of first conducting elements, wherein
each first conducting element in the set of first conducting elements has a first end and a second end;
and
for each first conducting element in the set of first conducting elements:
the first end is electrically connected to a location within a corresponding first protrusion in the series of first protrusions;
and
the second end is electrically connected along the first periphery;
a second radiator disposed on the second surface of the dielectric substrate, wherein the second radiator comprises:
a second region bounded by a second periphery and a third periphery, wherein the second periphery is disposed within the third periphery;
and
a series of second protrusions separated by a series of second grooves, wherein the series of second protrusions separated by the series of second grooves is disposed along the second periphery;
wherein the first radiator is disposed with respect to the second radiator such that:
the first periphery is disposed within the second periphery;
for each first protrusion in the series of first protrusions:
a projection, onto the second surface, of the first protrusion is disposed partially within a corresponding second groove in the series of second grooves;
and
for each second protrusion in the series of second protrusions:
the second protrusion is disposed partially within a projection, onto the second surface, of a corresponding first groove in the series of first grooves;
a dielectric medium disposed between the ground plane and the second surface of the dielectric substrate, between the ground plane and the first region, and between the ground plane and the second radiator;
and
a set of second conducting elements, wherein:
each second conducting element in the set of second conducting elements has a first end and a second end;
and
for each second conducting element in the set of second conducting elements:
the first end is electrically connected to a location selected from the group consisting of:
a location within a corresponding second protrusion in the series of second protrusions;
and
a location within the second region adjacent to a corresponding second protrusion in the series of second protrusions;
and
the second end is electrically connected
to the ground plane.

37 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/448,450Filed 17 Apr 2012
Priority: 25 Apr 2011
Published: 25 Oct 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H01Q 9/0464
Substantially flat resonant element parallel to ground plane, e.g. patch antenna: annular ring patch
H01Q 5/40
Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements: imbricated or…
H01Q 9/0407
Resonant antennas: substantially flat resonant element parallel to ground plane, e.g. patch antenna
H01Q 13/106
Resonant slot antennas: microstrip slot antennas