Outside unit for satellite reception and method of reception with said unit

The invention proposes an LNB using two transposition frequencies chosen on either side of the reception band so as to obtain a transposition of supradyne type and a transposition of infradyne type according to the frequency used. This choice of transposition frequencies makes it possible to have an...

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Bibliographic Details
Main Author LOUCHKOFF MARC
Format Patent
LanguageEnglish
Published 26.11.2009
Subjects
ANTENNAS, i.e. RADIO AERIALS
BASIC ELECTRIC ELEMENTS
BASIC ELECTRONIC CIRCUITRY
BROADCAST COMMUNICATION
DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TOANOTHER
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
TRANSMISSION
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Summary:The invention proposes an LNB using two transposition frequencies chosen on either side of the reception band so as to obtain a transposition of supradyne type and a transposition of infradyne type according to the frequency used. This choice of transposition frequencies makes it possible to have an overlap zone in the middle of the reception band which is transposed with the aid of the two oscillation frequencies but at different frequencies. This makes it possible to choose between the two transpositions in the case where the frequency transposed with the aid of an oscillator corresponds to a particularly noisy frequency.
Bibliography:Application Number: US20040584650