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Ding, Y., & Wu, K. (2009). A 4 x 4 ridge substrate integrated waveguide (RSIW) slot array antenna. IEEE Antennas and Wireless Propagation Letters, 8, 561-564. External link
Ding, Y., & Wu, K. (2009, June). Miniaturized hybrid ring circuits using T-type folded substrate integrated waveguide (TFSIW) [Paper]. IEEE MTT-S International Microwave Symposium (IMS 2009), Boston, MA. External link