Liu, L., Ghassemlooy, Z., Sambell, A., Danaher, S., & Smith, D. (2013). Investigation of transformer turns ratio between feed and slot of aperture coupled slot antenna by using s11 parameter. IEEE Transactions on Antennas and Propagation, 61, 5785-5787. https://doi.org/10.1109/TAP.2013.2275745