“…Since the proposal of microstrip LWAs (MLWAs) in 1978, considerable interest in its research followed [1][2][3][4][5][6][7][8][9]. Wireless waves with different frequencies have different characteristics that could be more suitable for a certain type of wireless device [10][11][12]. Due to their large bandwidth, ability to integrate easily with microwave and millimetre-wave circuits, planar low-profile configuration, inherent beam-scanning abilities with frequency and narrow beam [13,14], microstrip LWAs continue to be a popular choice.…”