Double up-conversion modulator

Details Double up-conversion modulator Double up-conversion modulator

H - Electricity

04

L

H04L 27/34 (2006.01) H03C 1/54 (2006.01) H03C 3/40 (2006.01) H04Q 7/36 (2006.01)

Patent

CA 2390630

A double up-conversion modulator includes a first conversion stage (1) formed of two modulation units (101, 102), receiving at one input quadriphased baseband signals, controlled by four quadriphased carrier signals at a first intermediate frequency (IF1), and delivering at one output opposite up-converted signals (IF1C, IF1C_b) at said first intermediate frequency. The modulator further includes a second up-conversion stage (2) receiving at one input said up-converted signals at said first intermediate frequency, controlled by two other in phase opposition carrier signals at a second intermediate frequency (IF2), and delivering at one output a high frequency signal (HF_M), said high frequency (HF) corresponding to the sum of said first and second intermediate frequencies (IF1 +IF2).

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