An ultra-wideband transceiver comprising: one antenna for transmitting a first ultra-wideband signal at time 1 and receiving a second ultra-wideband signal at time 2; a transfer unit configurable to operate in a transmitting mode or a receiving mode, the transfer unit operative to transfer the first ultra-wideband signal from a first node to the antenna through a first impedance in said transmitting mode or to transfer the second ultra-wideband signal received by the antenna from outside of the transceiver to the first node through the first impedance in said receiving mode, wherein the second ultra-wideband signal is to be transferred from the first node to a second node through a second impedance for sampling process of a capacitor of which one end is connected to the second node; a first buffer for generating a first pulse signal for the first ultra-wideband signal and outputting the first pulse signal to the first node at time 1; a second buffer for generating a second pulse signal for sampling the second ultra-wideband signal and outputting the second pulse signal to the second node at time 2; and a signal generator for outputting a first turn-on signal for turning on the first buffer and a transmission pulse signal to the first buffer at time 1 and outputting a second turn-on signal for turning on the second buffer and a reception pulse signal to the second buffer at time 2, wherein a first input signal for turning on a transistor of the transfer unit into said transmitting mode at time 1 is obtained by combining the first pulse signal from the first buffer and a first analog voltage signal at the first node and a second input signal input for turning on the transistor into said receiving mode at time 2 is obtained by combining the second pulse signal from the second buffer and a second analog voltage signal at the first node, the second analog voltage signal being different from the first analog voltage signal, and wherein, when turned on in response to the first turn-on signal, the first buffer generates the first pulse signal with a nanosecond (ns) pulse width by using the transmission pulse signal and the first turn-on signal, and when turned on in response to the second turn-on signal, the second buffer generates the second pulse signal by using the reception pulse signal and the second turn-on signal, and wherein the second buffer is turned off when the first buffer is turned on based on the first turn-on signal generated by the signal generator, and the second buffer is turned on based on the second turn-on signal generated by the signal generator when the first buffer is turned off. one antenna for transmitting a first ultra-wideband signal at time 1 and receiving a second ultra-wideband signal at time 2; a transfer unit configurable to operate in a transmitting mode or a receiving mode, the transfer unit operative to transfer the first ultra-wideband signal from a first node to the antenna through a first impedance in said transmitting mode or to transfer the second ultra-wideband signal received by the antenna from outside of the transceiver to the first node through the first impedance in said receiving mode, wherein the second ultra-wideband signal is to be transferred from the first node to a second node through a second impedance for sampling process of a capacitor of which one end is connected to the second node; a first buffer for generating a first pulse signal for the first ultra-wideband signal and outputting the first pulse signal to the first node at time 1; a second buffer for generating a second pulse signal for sampling the second ultra-wideband signal and outputting the second pulse signal to the second node at time 2; and a signal generator for outputting a first turn-on signal for turning on the first buffer and a transmission pulse signal to the first buffer at time 1 and outputting a second turn-on signal for turning on the second buffer and a reception pulse signal to the second buffer at time 2, wherein a first input signal for turning on a transistor of the transfer unit into said transmitting mode at time 1 is obtained by combining the first pulse signal from the first buffer and a first analog voltage signal at the first node and a second input signal input for turning on the transistor into said receiving mode at time 2 is obtained by combining the second pulse signal from the second buffer and a second analog voltage signal at the first node, the second analog voltage signal being different from the first analog voltage signal, and wherein, when turned on in response to the first turn-on signal, the first buffer generates the first pulse signal with a nanosecond (ns) pulse width by using the transmission pulse signal and the first turn-on signal, and when turned on in response to the second turn-on signal, the second buffer generates the second pulse signal by using the reception pulse signal and the second turn-on signal, and wherein the second buffer is turned off when the first buffer is turned on based on the first turn-on signal generated by the signal generator, and the second buffer is turned on based on the second turn-on signal generated by the signal generator when the first buffer is turned off.