Thomson Multimedia S.a.

Thomas Multimedia S.a.

David Harrison

Ali Louzir

Christopher Howson

Chaoying Guo

Gerard Haquet

Wireless transmission process and apparatus include a frequency diversity process for carrying out spectral spreading of a modulated SHF (Super High Frequency) carrier. The modulated SHF carrier transports information between a transmitter and at least one receiver. The frequency of the SHF carrier is varied continuously in a specified band so as to transmit to the receiver a signal having a spectrum containing a plurality of frequencies representing a plurality of uncorrelated signals each transporting the information to be transmitted.

Frequency diversity process and device for an SHF carrier

The present invention relates to a process and a device for the wireless transmission of a signal S.sub.1 between a transmitter and at least one receiver. According to the invention, at the sending end:

Process and device for wireless transmission

A microwave polarizer particularly in a system for coupling energy between a waveguide and a transmission line. The polarizer reduces cross polarization by means of the probes being adjusted to an input impedance of less than 50 ohms, in particular to 20 ohms, by reducing the penetration depth of the probes. The smaller penetration depth also increases the distance between the two probes, which reduces cross polarization.

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La Bouexiere, France

David Harrison