Design development and characterization of wideband reconfigurable antenna antenna for RF applications

Abstract

Due to advances in integrated technology, engineers are able to fit many diverse applications operating at different frequencies into a single wireless device. As a result, the demand for various antennas covering different wireless communication bands on the same platform has increased dramatically. The design of a multiband antenna can be accomplished by simply creating slots on a patch antenna. The advancements in wireless communication impose a growing range of demands on the antennas performance, requiring multiple functionalities to be present in a single device. To satisfy these different application needs within a limited space, reconfigurable antennas are often used which are able to switch between a numbers of states, providing multiple functions using a single antenna. Electronic switching components, such as PIN diodes, radio-frequency micromechanical systems (RF-MEMS), and varactors, are typically used to achieve antenna reconfiguration. The research on reconfigurable antenna that suits for wideband RF applications is limited. The study on wideband reconfiguration patch antenna with multiple shapes designed on same patch was explored for the modern RF applications. newlineThe L, C and Swastic shaped slotted MSPA were designed and analyzed. Three substrates, i.e., FR4, RT Duroid, and Taconic were tested for the design of L shaped slot MSPA. It is observed that, Using FR4 substrate would provide more number of bands (8 bands) compared to RT Duroid(5 bands) and Taconic(7 bands). The double headed spiral antenna was designed, fabricated and tested. The simulation results were on par with measured results. The double headed spiral patch loaded with SRR exhibits a bandwidth of 130 MHz, 290 MHz, 370 MHz, and 430 MHz at 1.95, 2.32, 3.39, and 5.52 GHz under simulation, and 60 MHz, 250 MHz, 250 MHz, and 360 MHz at 1.99, 2.4, 3.43, and 5.64 GHz under measurement. newlineThe microstrip patch reconfigurable 2x4 antenna array is designed using corporate feeding technique. The proposed reconfigurable antenna resonates at S and