An apparatus to measure a bioimpedance, the apparatus comprising: a first electrical signal generator configured to generate a first electrical signal to measure a bioimpedance of an object ; a compensation signal generator configured to generate a compensation signal to compensate a biosignal measured based on the first electrical signal; and an amplifier configured to amplify the compensated biosignal; electrodes (165-180, 310-340, 510-540, 765-780) configured to conduct the first electrical signal or the biosignal to the object , wherein at least one of the electrodes (165-180, 310-340, 510-540, 765-780) interfaces with the object in electrical regions; wherein the compensation signal generator comprises a second electrical signal generator configured to generate the second electrical signal comprising a phase identical to or opposite to a phase of the first electrical signal;wherein the compensation signal generator further comprises an impedance element configured to generate the compensation signal based on a second electrical signal; wherein the compensation signal generator is configured to perform one of outputting the compensation signal generated in response to the second electrical signal flowing from electrodes into the object , adjusting an amplitude of the second electrical signal based on an amplitude of the compensation signal, and generating the compensation signal in response to the second electrical signal flowing through the object to compensate a biosignal generated based on the first electrical signal flowing through the object and based on an interface impedance between the object and the electrodes ; wherein the compensation signal comprises a phase opposite to a phase of the biosignal, and wherein an amplitude of the compensated biosignal is smaller than an amplitude of the biosignal before the compensation. a first electrical signal generator configured to generate a first electrical signal to measure a bioimpedance of an object ; a compensation signal generator configured to generate a compensation signal to compensate a biosignal measured based on the first electrical signal; and an amplifier configured to amplify the compensated biosignal; electrodes (165-180, 310-340, 510-540, 765-780) configured to conduct the first electrical signal or the biosignal to the object , wherein at least one of the electrodes (165-180, 310-340, 510-540, 765-780) interfaces with the object in electrical regions; wherein the compensation signal generator comprises a second electrical signal generator configured to generate the second electrical signal comprising a phase identical to or opposite to a phase of the first electrical signal;wherein the compensation signal generator further comprises an impedance element configured to generate the compensation signal based on a second electrical signal; wherein the compensation signal generator is configured to perform one of outputting the compensation signal generated in response to the second electrical signal flowing from electrodes into the object , adjusting an amplitude of the second electrical signal based on an amplitude of the compensation signal, and generating the compensation signal in response to the second electrical signal flowing through the object to compensate a biosignal generated based on the first electrical signal flowing through the object and based on an interface impedance between the object and the electrodes ; wherein the compensation signal comprises a phase opposite to a phase of the biosignal, and wherein an amplitude of the compensated biosignal is smaller than an amplitude of the biosignal before the compensation. <EOS>