Introduction A phased array coil had been widely used more than 10 years, the coil engineers had introduced various decoupling methods to obtain isolation between nearest elements. Overlapped phased array coil has advantages that mutual inductance between nearest coil elements could be minimized [1]. Especially, non-overlapped phased array coil requires various decoupling methods and theoretical analysis of decoupling theory also has been studied [3]. Current researches have been conducted in both simulation and experimentally for numerically comparison of decoupling methods. Volkan E. A. demonstrated simulation comparison of various decupling methods with S21, the measurement of isolation with two elements, using HFSS [4], and the transformer decoupling was also compared by signal-to-noise ratio (SNR) with gapped and overlapped geometries in 3T [5]. We have conducted research on comparison between capacitive decoupling network and transformer decoupling with hybrid version of two methods in terms of SNR and noise correlation matrix on 7T.