1. Johnson RC, Jasik H (1984) Antenna engineering handbook. McGraw-Hill Book Company, New York
2. Bhartia RP, Bahl I, Ittipiboon A (2000) Microstrip antenna design handbook (Artech House Antennas and Propagation Library) Artech House, London
3. Sahu NK, Sharma AK (2017) An investigation of pattern and frequency reconfigurable microstrip slot antenna using PIN diodes. In: Progress in electromagnetics research symposium-spring (PIERS). IEEE, St. Petersburg Russia, pp 971–976
4. Sharma AK, Gupta N (2015) Pattern reconfigurable antenna using non-uniform serpentine flexure based RF-MEMS switches. In: Progress in electromagnetics research symposium-spring (PIERS), PIERS Proceedings, Prague, Czech Republic, pp 2840–2843
5. Wong KL, Pan SC (1997) Compact triangular microstrip antenna. Electron Lett 6(33):433–434