Other

Agence Spatiale Europeenne

David Raboso Garcia-Baquero

Dietmar Schmitt

Isabel Montero Herrero

Dieter Wolk

Jaime Hueso Gonzalez

Luis Galan Estella

Jaime Huesco Gonzalez

The invention concerns a waveguide filter () for microwaves, characterized in that it has, at least on part of its length, a cross-section having two mutually non-parallel opposite sides ('), for example trapezoid. The use of such a shape enables the power threshold for forming self-maintained electron avalanche discharges to substantially increased and satisfactory filtering properties to be obtained. The invention also concerns the use of such a filter in a high-power microwave transmitter operating in X and Ka bands, in particular for space applications.

Microwave waveguide filter with non-parallel walls

A method of reducing multipactor effect occurrence on surfaces in a high energy field, e.g., RF devices, is provided and RF devices having a configuration produced by the method are provided. The method includes forming wall structures formed of a metallic wall material and defining a channel through which the RF energy travels, the wall material having a wall material surface. A porous layer is disposed over the wall material surface and has a porous layer upper surface opposite a porous layer lower surface facing the wall material surface. The porous layer defines pores with openings distributed in the porous layer upper surface. A conductive layer is disposed over the porous layer upper surface.

Method and structure for inhibiting multipactor

Growing community of inventors

Leiden, Netherlands

David Raboso Garcia-Baquero