SADAOUI , Lamia

To deploy the fourth generation called 4G/LTE or "LTE advanced", mobile operators face strong constraints: they must ensure a good geographic coverage but also an excellent quality of service. This requires new methods that go far beyond what has been implemented for GSM or 3G networks. The telecom industry has created the concept of "small...

In this paper, we will focus on complementary antennas with orthogonal radiation patterns, in order to develop another type of multi-band antenna for diversity systems. The study is based on the use of monopoles and quarter wave length slots.

This paper presents a decoupling technique for two close radiating elements, designed for the low LTE band [0.7-0.9] GHz. This method can be applied to a coupled antenna structure with an axis of symmetry. It consists in using a power splitter and a phase shifter between the two ports of the symmetrical antenna structure, in order to feed them...

AP-P3 - Antennes compactes POSTERS

This paper presents a technique for decoupling close radiating elements printed on FR-4 substrate designed for the [0.7-0.9] GHz LTE low frequency band. This is obtained by using a power splitter and a phase shifter connected between the feeds of two symmetrical antennassurrounding a third one. This method provides a high isolation of 70 dB at...

Cet article présente une étude sur l'influence d'un radiateur métallique dans l'environnement proche d'une antenne MIMO à 4 accès tri-bande, conçue pour les bandes LTE [0,7-0,9], [1,7-1,88], et [2,5-2,69] GHz. Alors que sa présence aurait pu les pénaliser, les performancesde l'antenne ont pu être améliorées avec ce radiateur utilisé comme...

This paper presents a study on the influence of a metallic radiator in the very close environment of a MIMO antenna system, with four accesses located at the four corners of the ground plane. Each access feeds a radiating structure made up of three radiating elements: a main folded monopole and two parasitic folded elements. This antenna...

Dans ce papier une antenne élémentaire de type autocomplémentaire (AC) à 2 accès est présentée. Elle est constituée de deux éléments rayonnants, un monopôle de taille 2×60 mm2 et une ouverture pratiquée dans le plan de masse appelée fente. Cette fente débouchante peut être de même taille que le monopôle mais aussi de taille différente afin...

This paper presents the study of a method used for decoupling radiating elements in the case of a multiband structure dedicated to small LTE Smart Cells. This method consists in using a power splitter and a phase shifter connected between the feeds of the two groups of radiating elements. The study begins with a monoband structure made up of...

This paper presents a multiband MIMO antenna system with four accesses, with very good performance despite the complex environment that surrounds it. This environment;consists of a thick plastic radome protecting the antenna and an aluminum metallic radiator placed behind it, which is usually not recommended to not disturb the operation of any...

The paper presents a design of a SIW (Substrate Integrated Waveguide) slot's antenna in W band for a sense-and-avoid radar module to tackle an emerging need of security during landing and take-off for small aircrafts. This work is developed inside the ODESSA project, funded by the European Union. The antenna was formed by 7 slots etched on the...