US 8,896,493 B2Granted

Interlaced multiband antenna arrays

AssigneeFractus, S.A.

InventorsCarles Puente Baliarda, Jordi Romeu Robert, Sebastian Blanch Boris

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Abstract

Antenna arrays which can work simultaneously in various frequency bands thanks to the physical disposition of the elements which constitute them, and also the multiband behavior of some elements situated strategically in the array. The configuration of the array is described based on the juxtaposition or interleaving of various conventional mono-band arrays working in the different bands of interest. In those positions in which elements of different multiband arrays come together, a multiband antenna is employed which covers the different working frequency bands. The advantages with respect to the classic configuration of using one array for each frequency band are: saving in cost of the global radiating system and its installation (one array replaces several), and its size and visual and environmental impact are reduced in the case of base stations and repeater stations for communication systems.

Claims20

Dependent claims

An interlaced multiband antenna array comprising:

a ground plane layer;
a first plurality of antenna elements operating in a first continuous frequency range and a second continuous frequency range, the first and second continuous frequency ranges being non-overlapping frequency ranges;
a second plurality of antenna elements operating only in the second continuous frequency range;
the first plurality and the second plurality of antenna elements arranged on the ground plane layer, and substantially arranged along a first direction with respect to a longitudinal axis of the interlaced multiband antenna array;
the first plurality of antenna elements comprising at least eight antenna elements;
the second plurality of antenna elements comprising at least four antenna elements;
for a majority of the antenna elements of the second plurality of antenna elements, an antenna element of the second plurality of antenna elements is placed between only two antenna elements of the first plurality of antenna elements;
a spacing relative to a wavelength of the second continuous frequency range between antenna elements of the second plurality of antenna elements is substantially twice a spacing relative to a wavelength of the first continuous frequency range between antenna elements of the first plurality of antenna elements;
each antenna element of the first plurality of antenna elements comprises a plurality of portions electromagnetically coupled both at the first continuous frequency range and at the second continuous frequency range;
and
an operating frequency of the first continuous frequency range is situated around 900 MHz and an operating frequency of the second continuous frequency range is situated around 1800 MHz.

8 more elements

An interlaced multiband antenna array comprising:

a ground plane layer;
a first set of antenna elements transmitting and receiving electromagnetic waves in a first continuous frequency range and in a second continuous frequency range, the first and second continuous frequency ranges being non-overlapping frequency ranges;
a second set of antenna elements transmitting and receiving electromagnetic waves only in the second continuous frequency range;
the first set and the second set of antenna elements arranged on the ground plane and substantially arranged along a first direction with respect to a longitudinal axis of the interlaced multiband antenna array;
a plurality of antenna elements of the first set and a plurality of antenna elements of the second set arranged in alternating positions and a spacing between antenna elements of the first set of antenna elements is substantially equal to a spacing between antenna elements of the second set of antenna elements;
the spacing between antenna elements of the first set of antenna elements is smaller than one wavelength for an operating wavelength of the first frequency range;
the spacing between antenna elements of the second set of antenna elements is larger than a half-wavelength for an operating wavelength of the second continuous frequency range;
each antenna element of the first set of antenna elements comprises a plurality of portions electromagnetically coupled both at the first continuous frequency range and at the second continuous frequency range;
and
the second continuous frequency range including a working frequency being at least two times higher than a working frequency for the first continuous frequency range.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/530,249Filed 22 Jun 2012 · continuation
Priority: 26 Oct 1999
Published: US 2012/0262359 A118 Oct 2012
Granted: 25 Nov 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H01Q 21/30
Antenna arrays or systems: combinations of separate antenna units operating in different wavebands and connected to a common feeder system
H01Q 1/246
Used in mobile communications, e.g. GSM: specially adapted for base stations
H01Q 5/42
Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed…: using…
H01Q 21/061
Arrays of individually energised antenna units similarly polarised and spaced apart: two dimensional planar arrays

Family

PCT/ES99/00343Parent of this continuation · filed 26 Oct 1999
Application10/135,019Parent of this continuation · filed 23 Apr 2002
Application10/988,261Parent of this continuation · filed 12 Nov 2004
Application11/803,782Parent of this continuation · filed 16 May 2007
Application12/476,308Parent of this continuation · filed 2 Jun 2009
Application13/044,831Parent of this continuation · filed 10 Mar 2011
US 2012/0262359 A1Pre-grant publication · published 18 Oct 2012
US 8,228,256 B2Parent of this continuation
US 7,932,870 B2Parent of this continuation
US 7,557,768 B2Parent of this continuation
US 7,250,918 B2Parent of this continuation
US 6,937,191 B2Parent of this continuation
US 2002/0171601 A1Published application
US 2005/0146481 A1Published application
US 2008/0036676 A1Published application
US 2009/0267863 A1Published application
US 2011/0156986 A1Published application
US 8,896,493 B2This patent

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