Spread-spectrum communication apparatus
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United States of America Patent
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Mar 2, 2004
Grant Date -
N/A
app pub date -
Jan 7, 2000
filing date -
Jan 7, 1999
priority date (Note) -
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Abstract
A spread-spectrum communication apparatus includes an analog modulator and demodulator for modulating and demodulating information in its transmitter and receiver respectively. The apparatus also includes a spreader and de-spreader for modulating and demodulating a spread-spectrum signal respectively in its transmitter and receiver. This structure widens a dynamic range of the RSSI with an inexpensive and simple circuit. This structure also allows the apparatus to operate in a stable manner against an intense input signal, to detect an 'out of sync' in a highly reliable manner and move immediately to a 'sync-tracking mode'.
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