1. Hong, J.S.G., Lancaster, M.J.: Microstrip filters for RF microwave applications. Wiley, New York, NY (2001)
2. Ahmad, B.H., Mazlan, M.H., Husain, M.N., Zakaria, Z., Shairi, N.A.: Microstrip filter design techniques: an overview. ARPN J. Eng. Appl. Sci. 10(1819–6608), 1–5 (2015)
3. Prajapati, P.R.: Application of defected ground structure to suppress out-of-band harmonics for WLAN microstrip antenna. Int. J. Microwave Sci. Tech. 2015, 1–9 (2015). https://doi.org/10.1155/2015/210608
4. Patel, N., Parikh, N., Katare, P., Kathal, K., Chaitanya, G.: Stepped impedance low pass microstrip line filter. Int. J. Innovative Res. Electr. Electron. Instrum. Control Eng. 3(5), 1–2 (2015)
5. Jacob, W. H.: Design and implementation of RF and microwave filters using transmission lines. Journal of Bobylon University /Engineering Science. 2(22), 1–13 (2014)