Interlaced multiband antenna arrays

摘要

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.

主权项

1. 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.