Spread spectrum signal receiving apparatus

Details Spread spectrum signal receiving apparatus Spread spectrum signal receiving apparatus

H - Electricity

04

K

H04K 1/00 (2006.01) G01S 1/00 (2006.01) H04B 1/707 (2006.01)

Patent

CA 2059497

A spread spectrum signal receiving apparatus comprising: a radio frequency processing circuit for converting a spread spectrum signal into an intermediate frequency signal; a binary encoder for encoding the intermediate frequency signal; a pseudo-random noise code generator; a code driver for controlling the phase and the chip speed of the output of the code generator; a first multiplier for multiplying the binary signal by the output of the code generator; a numerical controlled oscillator for outputting first and second carrier signals; second and third multipliers for multiplying the output signal of the first multiplier respectively by the first and second carrier signals; first and second low-pass filters supplied with the output signals of the second and third multipliers respectively; and a microcomputer having functions to produce signals for controlling the numerical controlled oscillator, and functions to produce signals for controlling the code driver.

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