A compact single feed dual‐band meandered planar antenna with 4G tunable bands and 1.29–2.05 GHz consistent bands is proposed here. In this antenna design, a varactor diode is implemented on the meandered arm to tune the operational frequency of the lower band between the 690 and 970 MHz frequencies. While the 4G band tuning, the rectangular‐shaped cutout portion of the antenna provides a consistent frequency bandwidth of 1.29–2.05 GHz. The measured fractional bandwidth of the entire tunable lower band range is 33.7% and a consistent 45.5% fractional bandwidth in the higher band. Both the tunable and consistent frequencies are experimentally verified to show acceptable matching based on S11 ≤ −6 dB criteria and near‐omnidirectional radiation patterns. The antenna is able to cover several wireless (LTE) communication bands including 4G.
A modified E-shape microstrip patch antenna with wide-bandwidth is employed in a 1x4 linear array. The array antenna shows a 42.1% fractional bandwidth using S 11 criteria of ≤ -10dB. The array antenna was fabricated with 0°progressive phase shift and experimentally verified with the help of a prefabricated 1:4 Wilkinson equal power divider for impedance matching and radiation patterns. The beam steering performance of the array antenna is also explored for different progressive phase shifts.
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