Thomson Licensing S.a.

Thomson Licensing

Henri Fourdeux

Ali Louzir

Philippe Minard

Françoise Le Bolzer

Patrice Hirtzlin

Philippe Chambelin

The invention proposes an optimized solution of a frequency/polarization splifter that requires no adjustment after production and can be produced entirely by moulding. The polarized-wave splitter comprises various components, including a polarization splittercoupled to two filtersandvia transition regionsand. The overall dimensions of the various components are such that the transfer characteristics of the splitter are better than the characteristics resulting from the sum of the characteristics of the components constituting the splitter.

Waveguide frequency-band/polarization splitter

The present invention relates to a multiband planar antenna comprising a first slotdimensioned (R) to operate at a first frequency fand fed by a feed linepositioned (Im) in such a way that the slot lies in a short-circuit plane of the feed line, and at least one second slotdimensioned (R) to operate at a second frequency f, the second slot being fed by the said feed line (Im).

Multiband planar antenna

The present invention relates to a source antenna for transmitting/receiving electromagnetic waves comprising means for transmitting electromagnetic waves with longitudinal radiation operating in a first frequency band and means for receiving electromagnetic waves, characterized in that the means for receiving electromagnetic waves consist of a first array of n radiating elements operating in a second frequency band and a second array of n&prime; radiating elements operating in a third frequency band, the first and second arrays and the longitudinal-radiation means having a substantially common phase centre and the radiating elements of the first and second arrays being arranged around the longitudinal-radiation means.

Source antennas for transmitting/receiving electromagnetic waves for satellite telecommunications systems

Antenna system for tracking moving satellites

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Corps-Nuds, France

Henri Fourdeux