Abstract: An image sensor and a method of fabricating the same are provided. A pad region is disposed on a substrate. The pad region has a higher concentration of impurity ions than the substrate. The pad region is selectively removed using the substrate as an etch mask, thereby forming a hole. A conductive pad is formed in the hole of the substrate.

Abstract: There is disclosed a pre-distortion correction circuit for use in an RF transmitter having a transmit path for receiving and amplifying an RF input signal. The pre-distortion correction circuit modifies distortion in the RF output signal caused by an RF power amplifier in the transmit path. The pre-distortion circuit comprises: 1) feedback circuitry coupled to an output of the transmit path for demodulating and digitizing the distorted RF output signal to thereby produce a first demodulated digital output signal; and 2) a pre-distortion calculation controller coupled to the feedback circuitry for comparing the first demodulated digital output signal to adjacent channel power (ACP) profile data stored in the pre-distortion calculation controller and generating therefrom pre-distortion correction values. The pre-distortion correction values are used to pre-distort the RF input signal to thereby cause the RF output signal to more closely resemble an ideal RF output signal within the limits of the ACP profile.