Abstract: A time-interleaved analog-to-digital converter includes sampling circuits, amplifier circuits, analog-to-digital converter circuits, and a detector circuitry. The sampling circuits are configured to an input signal according to first clock signals, to generate first signals. The amplifier circuits are configured to generate second signals according to the first signals. The analog-to-digital converter circuits are configured to convert the second signals to generate a digital signals. The detector circuitry is configured to adjust a delay time of each of the first clock signals, and calibrate gains of the amplifier circuits according to the digital signals.

Abstract: An echo estimation system includes a transceiver circuitry and a processor circuitry. The processor circuitry is coupled to the transceiver circuitry. The processor circuitry is configured to calculate linear echo power and non-linear echo power based on a signal under test in the transceiver circuitry. The linear echo power and the non-linear echo power are utilized to determine a quality of the transceiver circuitry or utilized to determine component parameters of the transceiver circuitry.

Abstract: An echo estimation system includes a transceiver circuitry and a processor circuitry. The processor circuitry is coupled to the transceiver circuitry. The processor circuitry is configured to calculate linear echo power and non-linear echo power based on a signal under test in the transceiver circuitry. The linear echo power and the non-linear echo power are utilized to determine a quality of the transceiver circuitry or utilized to determine component parameters of the transceiver circuitry.