Abstract:
A signal modulator includes: a modulating circuit; a first signal trace block arranged to conduct a first in-phase oscillating signal to the modulating circuit, and conduct a first quadrature-phase oscillating signal to the modulating circuit; and a second signal trace block arranged to conduct a second in-phase oscillating signal to the modulating circuit, and conduct a second quadrature-phase oscillating signal to the modulating circuit, and a phase difference of the first in-phase oscillating signal caused by the first signal trace block substantially equals a phase difference of the second quadrature-phase oscillating signal caused by the second signal trace block, a second quadrature-phase oscillating signal to the modulating circuit, and a phase difference of the second in-phase oscillating signal caused by the second signal trace block substantially equals a phase difference of the first quadrature-phase oscillating signal caused by the first signal trace block.
Abstract:
A multi-mixer system comprising a plurality of mixers and a filter module is provided. Each of the mixers is selectively enabled to mix an input signal with a corresponding oscillation signal to generate an output signal at an output node; and the filter module provides different frequency responses for the output signals from at least two of the output nodes of the mixers, wherein the at least two of the output nodes of the mixers are connected to different internal nodes of the filter module.
Abstract:
A signal modulator includes: a modulating circuit; a first signal trace block arranged to conduct a first in-phase oscillating signal to the modulating circuit, and conduct a first quadrature-phase oscillating signal to the modulating circuit; and a second signal trace block arranged to conduct a second in-phase oscillating signal to the modulating circuit, and conduct a second quadrature-phase oscillating signal to the modulating circuit, and a phase difference of the first in-phase oscillating signal caused by the first signal trace block substantially equals a phase difference of the second quadrature-phase oscillating signal caused by the second signal trace block, a second quadrature-phase oscillating signal to the modulating circuit, and a phase difference of the second in-phase oscillating signal caused by the second signal trace block substantially equals a phase difference of the first quadrature-phase oscillating signal caused by the first signal trace block.