In the past few years, reconfigurable antennas have been widely used in various wireless applications. The use of reconfigurable antennas is based on the reconfigurable capability of the design. Frequency- reconfigurable antenna is useful in changing the operating band of the antenna such in cognitive radio networks. Radiation pattern-reconfigurable antennas are useful in beam steering to improve the reception. On the other hand, polarization-reconfigurable antennas are widely used in multiple antenna systems to improve the channel capacity. The use of reconfigurability using dielectric resonator antenna (DRA) has shown great impact on antenna gain. This thesis presents the design and analysis of a frequency and pattern-reconfigurable dielectric resonator antenna array. Existing reconfigurable DRA either configure in terms of frequency or pattern but unable to control both properties using a single design. The restrictions of antenna's adaptability and flexibility in dynamically adjusting to different communication scenarios where both pattern and frequency optimization are required. Hence, the spectral efficiency could be improved with development of frequency and pattern reconfiguration in same antenna structure. This research aims to combine both types of configurations namely, frequency and radiation pattern into a single antenna design. In terms of frequency reconfiguration, it has three frequencies (4.1 GHz, 3.9 GHz & 3.5 GHz). The highest effective length of transmission line (TL) will produce 3.5 GHz while shortest will produce 4.1 GHz. For pattern reconfiguration, steering of -30ᵒ and +30ᵒ only occur in 3.5 GHz. For steering, it involves parasitic TL switching. The left parasitic DRA will be activated once the related switch is turned ON, thus the beam pattern could be directed towards-30ᵒ. The opposite mechanism occurs when the right parasitic DRA is activated using the switch at the related parasitic transmission line. Apart from this, other frequencies are all non-steering. Although this design is a combination of two configurations but still it does not compromise the S11 value, radiation pattern, directivity, S11 bandwidth and the gain. This antenna uses Rogers as the substrate and copper as the ground plane. All the design and
simulation results are conducted using CST Studio Suite 2019 software. Based on the result, it shows that the antenna produces frequencies of 3.5GHz, 3.9GHz and 4.1GHzwith return loss value is under -10 dB. It also produces an excellent gain of more than 5dBi for all the configurations for this type of antennas
