A geometrically decoupled 16Tx-32Rx RF coil has been designed for the Iseult 11.7T project. It has 16 transceive resonators and 16 receive-only loops. This peculiar architecture satisfied three major concerns: compactness-made compatibility with a local B0 shim insert, easy tuning and performance prediction. Simulations show high flip angle homogeneity in the whole brain (NRMSE<6%) with kT-points, accounting for all constraints (pulse length, SAR, power budget). Predicted global SNR in phantom with SoS reconstruction is 2.47±0.2 times higher as compared to 7T (with the commercial 8Tx-32Rx Nova coil) or equivalently, the SNR scales as B0 to the power of 1.74±0.16.