Abstract
The fifth generation (5G) applications require the components of the wireless communication systems to operate at large frequency ranges. This is to increase the data rate capability and reduce the network traffic in the systems. Therefore, the main purpose in this paper is to propose and design a 4×1 microstrip patch antenna array with frequency reconfigurability feature using the Computer Simulation Technology (CST) microwave studio. To do this, slots and PIN diodes are inserted in each of the radiating patches. Comparing to the conventional 4×1 microstrip array, the proposed microstrip array has capability to resonate not only at 28 GHz, but also at 24, 26, and 31 GHz as well. Also, the bandwidth at each of these resonance frequencies is about 0.5%. The antenna array gain is more than 11.5 dBi over the operating frequency range. The radiation pattern is directive with very low side lobe level at both the E- and H- planes. The proposed microstrip antenna is low profile and compact in which it may be of interest in some 5G applications.
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