US 8,941,541 B2Granted

Multilevel antennae

AssigneeFractus, S.A.

InventorsCarles Puente Baliarda, Carmen Borja Borau, Jaume Anguera Pros, Jordi Soler Castany

Life of this patent

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Abstract

An apparatus includes an antenna concealed within a portable communication device and configured to operate in non-overlapping frequency bands. The antenna includes an antenna element with a multilevel structure of geometric elements arranged to define empty spaces to provide winding current paths through the antenna element which circumvent the empty spaces, the winding current paths respectively corresponding to the non-overlapping frequency bands. The antenna further includes a ground plane, with the antenna element being electrically coupled to the ground plane. The antenna element provides a substantially similar impedance level and radiation pattern in the non-overlapping frequency bands. The geometric elements are arranged such that the antenna element does not comprise a group of single band antennas that respectively operate in the non-overlapping frequency bands, and the antenna element is not a fractal type antenna element.

Claims23

Dependent claims

An apparatus comprising:

an antenna having a multi-band behavior, the antenna being concealed within a portable communication device and configured to operate in a plurality of non-overlapping frequency bands, the antenna comprising:
an antenna element including a multilevel structure, the multilevel structure comprising a plurality of geometric elements arranged to define empty spaces to provide a plurality of winding current paths through the antenna element which circumvent the empty spaces, the winding current paths respectively corresponding to the non-overlapping frequency bands to provide the antenna element with the multi-band behavior;
and
a ground plane, the antenna element being electrically coupled to the ground plane;
wherein the antenna element provides a substantially similar impedance level and radiation pattern in the plurality of non-overlapping frequency bands;
wherein the geometric elements are arranged such that the antenna element does not comprise a group of single band antennas that respectively operate in the non-overlapping frequency bands;
and
wherein the antenna element is not a fractal type antenna element.

5 more elements

A multi-band antenna comprising:

a ground plane;
and
a conductive radiating element electrically coupled to the ground plane and including at least one multilevel structure,
said at least one multilevel structure comprising a plurality of electromagnetically coupled geometric elements, wherein a perimeter of the multilevel structure has more than five sides,
said plurality of geometric elements including at least three portions, a first portion being associated with a first selected frequency band, a second portion being associated with a second selected frequency band and a third portion being associated with a third selected frequency band, at least substantial parts of said second and third portions being part of the first portion, said first, second and third portions defining empty spaces in an overall structure of the conductive radiating element to provide respective circuitous current paths within the first portion, within the second portion and within the third portion, a plurality of the circuitous current paths overlapping within a plurality of the geometric elements, and
the current within said first portion providing said first selected frequency band with radio electric behavior substantially similar to the radio electric behavior of said second and third selected frequency bands, the current within the second portion providing said second selected frequency band with radio electric behavior substantially similar to the radio electric behavior of said first and third selected frequency bands, and the current within the third portion providing said third selected frequency band with radio electric behavior substantially similar to the radio electric behavior of said first and second selected frequency bands,
wherein the multi-band antenna is an internal antenna concealed within a portable communications device.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/732,755Filed 2 Jan 2013 · continuation
Priority: 20 Sep 1999
Published: US 2013/0057450 A11 Aug 2013
Granted: 27 Jan 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification16 codes

H01Q 1/36
Details of, or arrangements associated with, antennas: structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials…
H01Q 1/241
With receiving set: used in mobile communications, e.g. GSM
H01Q 1/38
Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith: formed by a conductive layer on an…
H01Q 1/50
Details of, or arrangements associated with, antennas: structural association of antennas with earthing switches, lead-in devices or lightning…

Family

PCT/ES99/00296Parent of this continuation · filed 20 Sep 1999
Application10/102,568Parent of this continuation · filed 18 Mar 2002
Application10/963,080Parent of this continuation · filed 12 Oct 2004
Application11/102,390Parent of this continuation · filed 8 Apr 2005
Application11/179,257Parent of this continuation · filed 12 Jul 2005
Application11/780,932Parent of this continuation · filed 20 Jul 2007
Application12/400,888Parent of this continuation · filed 10 Mar 2009
Application13/044,189Parent of this continuation · filed 9 Mar 2011
Application13/411,212Parent of this continuation · filed 2 Mar 2012
Application13/669,916Parent of this continuation · filed 6 Nov 2012
US 2013/0194153 A1Pre-grant publication · published 1 Aug 2013
US 8,330,659 B2Parent of this continuation
US 8,154,463 B2Parent of this continuation
US 8,009,111 B2Parent of this continuation
US 7,528,782 B2Parent of this continuation
US 7,397,431 B2Parent of this continuation
US 7,123,208 B2Parent of this continuation
US 7,015,868 B2Parent of this continuation
US 2002/0140615 A1Published application
US 2005/0110688 A1Published application
US 2005/0259009 A1Published application
US 2006/0290573 A1Published application
US 2008/0042909 A1Published application
US 2009/0167625 A1Published application
US 2011/0163923 A1Published application
US 2012/0154244 A1Published application
US 2013/0057450 A1Published application
US 8,941,541 B2This patent

From the US filing history. Foreign family members aren’t listed.