A 3T Linear Phase Volume Excitation Coil

Rock Hadley¹, Dennis Parker¹, Glen Morrell¹

This work uses lumped element distributed capacitors to increase the electrical line length of non-resonant microstrip transmission lines. These line elements are combined to form an 8-element circular array volume coil with circularly polarized central magnetic field. Because of the phase change down the length of each element, a linear phase rotation occurs along the central axis of the volume coil making it ideally suited for parallel transmission, SAR reduction, and gradient-less imaging applications. Increasing the electrical line length of these devices using distributed capacitors enables these devices to become useful for 3T imaging.