Multilayer antenna array in Q band for spatial communication

International audienc

Multirayer antenna array in Q band for spatial communication

International audienc

THICK SLOT TRANSITION AND ANTENNA ARRAYS IN Q BAND

This paper deals with an H shape slot etched in a thick ground plane to feed multilayer antenna arrays. This study takes place in European MIPA project [1] concerning an antenna prototype which is a part of Q band (50 GHz) one-feed-per-beam antenna reflector. In millimetre waves, it is highly required to separate active layer (MEMS, MMIC, ..) and radiating elements to avoid electrical spurious generated by coupling radiation. This separation is done with a very thick metallic support (2 mm). Moreover, this thick ground plane is important for thermal dissipation aspect. In this aim, the authors present an original feed of antenna array via a H shape thick slot transitio

Use of RF MEMS and micromachined parts to realize highly integrated V band active feed for satellite antennas

International audienc

Implementation of RF MEMS and Micromachined Parts to Realize Highly Integrated V Band Active Feed for Satellite Antennas

International audienc

Analysis of capabilities to achieve overlapped apertures by using a multi-feed ebg structure loaded by passive filtering functions

International audienceThis paper presents an analysis of different multi-feed EBG solutions, in order to choose the best one which provides overlapped apertures and promises good functioning as a reflector focal array. Two main structures will be studied: the matched and unmatched antenna. Both structures present different kinds of interference and coupling between feeds which disturb the performances of the antenna, especially the radiation. That is why suited filtering functions for each solution will be studied in order to isolate feeds and reconstruct the disturbed radiation. The investigation of all structures and their required filtering functions will lead us to the final promising solution which is the matched multi-feed EBG antenna

RF-MEMS for antenna applications within the MIPA project

International audienc

Design of a multi-feed EBG antenna as a focal array for Ka-band space applications

International audienceThis paper is dedicated to the design of a multi-feed matched EBG antenna, providing overlapped beams, as a reflector focal array for Ka-band space applications. The architecture must ensure the coverage of Europe through 40 spots "Agora mission proposed by CNES" with a 4x reuse scheme (2 linear polarizations and 2 frequency channels). As a first step, the EBG antenna will be studied in mono-feed configuration. Then, the simulation of the multi-feed EBG antenna will show us its suffering from the mutual coupling between feeds which disturbs the radiation. Once the S-parameters of the multi-feed antenna are extracted, suited filters will be connected to the antenna in order to isolate channels and reconstruct the radiation. Finally, the whole system (EBG antenna illuminating a reflector) will be studied in order to characterize the coverage