This paper addresses the microwave energy harvesting on board of geostationary satellites for health satellite monitoring. To prove the feasibility of such a concept, we investigated the electromagnetic environment existing on antenna panels. Based on established cartographic maps, three designs of rectennas are proposed. Measured DC powers ranging from 0.256 mW to 1.28 mW can be harvested for electric field levels ranging from 91 V/m to 121 V/m and by using very simple and compact designs. The harvesting structures consist of only one Schottky diode per rectenna and present a total surface of 2.4 cm 2. They are suitable for powering the new generation of ultralow power transceivers, thus enabling autonomous wireless power networks for satellite health monitoring.

An original new design of microwave structure for integrating filter and antenna functions on a single device is presented. The structure is composed of a partially metallized dielectric plate enclosed in a parallelepipedic cavity. This topology allows a high integration in a planar environment type, and is suitable for high frequencies filtering and powers applications.Io order to validate the multilayer radiant filter concept, an opened two-pole filter using two superposed cavities coupled hy a metallic iris is presented. Its filtering and radiating functions are optimized in the same time to present some required electrical performances. Moreover, to show the use variety of the antenna, two examples of use are described. The first one presents a coupled array of two radiant filters, and the second one an antenna with circular polarization radiation.

A dielectric resonator filter is proposed for high-speed data communication systems and for multilayer filter applications. The structure is composed of a partially metallized dielectric plate enclosed in a parallelepipedic cavity. This topology allows high integration in a planar-type environment. The proper excitation is ensured by coplanar lines directly integrated on the dielectric resonator. This structure, easily manufactured, is suitable for high frequency-filtering and power applications. In order to realize two-and four-pole filters without tuning, some new coupling and frequency compensation techniques are presented. To compensate for a parasitic effect, a direct optimization method is ( ) combined applying a global electromagnetic EM analysis to describe the four-pole filter. Some experiments are performed to verify the theoretical design.

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