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[en] Magnetic Resonance Imaging (MRI) has become an integral part of medical diagnosis because it produces tomographic images without the use of any ionizing radiation. In recent years, array coils, tightly surrounding the target anatomy, significantly increased the signal yield in any given scan setup. Therefore, they reduced the minutes-long scan times improving patient comfort and reducing costs. The trend to arrays with more and more channels, however, increased the number of screened RF cables in the bore, that are rigid, bulky, and can even pose a safety hazard to the patient if not carefully placed and decoupled. This thesis describes a fully integrated dual-channel CMOS receiver for surface coils within an MRI array coil. The IC minimizes the size of the receiver modules, which enables the deployment of the receiver directly on the coil. The immediate conversion of the signal into the digital domain means that the data can be transmitted without loss over optical fibers completely removing all shielded RF cables. Therefore, light-weight or even wearable, high channel-count array coils are made possible, that may further increase the harvested signal. Signal properties for a broad range of MRI systems are analyzed and translated into specifications for the IC. Using a 130 nm CMOS process, a receiver IC with reflective LNAs, to ensure decoupling between different array elements, has been implemented. It achieves a measured sub-1 dB noise figure and an IIP3 above 0 dBm with a power consumption below a quarter of a Watt per channel, which simplifies the power supply of the receiver modules. A gain range of more than 40 dB is covered. The IC has been verified by acquiring images within a commercial 3 T MRI scanner.