Quadrature signal phase controller for controlling phase

A receiver comprising:

• a first phase shifter mixing each of in-phase differential input signals and each of quadrature-phase differential input signals, in response to at least any one of a first control signal and a second control signal, to generate phase shifted first in-phase differential output signals and phase shifted first quadrature-phase differential output signals;
• a second phase shifter, mixing each of the in-phase differential input signals and each of the quadrature-phase differential input signals, in response to at least any one of the first control signal and the second control signal, to generate phase shifted second in-phase differential output signals and phase shifted second quadrature-phase differential output signals;
• a low-noise amplifier (LNA) receiving a radio frequency (RF) signal output from an antenna, amplifying the received RF signal and outputting a low-noise amplified signal;
• an I mixer mixing the low-noises amplified signal and any one of the phase shifted first in-phase differential output signals and the phase shifted second in-phase differential output signals and outputting converted signals as in-phase frequency signals;
• and
• a Q mixer mixing the low-noise amplified signal and any one of the phase shifted first quadrature-phase differential output signals and the phase shifted second quadrature-phase differential output signals and outputting converted signals as quadrature-phase frequency signals;
• wherein each of the first and second phase shifters, in response to a change in a level of the first control signal and a change in a level of the second control signal, increases or decreases the phase difference between the first in-phase differential output signals and the second quadrature-phase differential output signals, and the phase difference between the second in-phase differential output signals and the first quadrature-phase differential output signals.