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This work presents on designing a On-Demand Reconfigurable Frequency MIMO antenna for WLAN/5G/WiMAX Communication, which are operating at 2.45 GHz, 3.5 GHz and 5.8 GHz. The 2.45 GHz frequency is commonly used for wireless data transmission. It is a part of the ISM (Industrial, Scientific and Medical) band, which uses for industrial, scientific, and medical applications. The main advantage of this frequency is easy installation in small devices and it can penetrate in obstacles.5.8 GHz is commonly used for wireless communication applications such as Wi-Fi, wireless video transmission, and remote control devices. This frequency band has gained popularity for use in consumer-level drones and FPV (first-person view) systems due to its high bandwidth and ability to transmit high-quality video signals over longer distances compared to lower frequency bands. 3.5 GHz frequency band is most popular band in 5G networks, it offers high bandwidth and good propagation characteristics that can support high-speed data transmission and connectivity in urban areas. The 3.5 GHz frequency band has been identified as a key spectrum for 5G deployment in many countries and regions around the world. For these criteria we used to propose a reconfigurable antenna which can shift this frequency based on conditions of RF PIN diodes. The proposed design contains two independent MIMO (Multi Input and Multi Output Antenna) configurations in each antenna two pin diodes are present which are operated at 3 frequencies based on conditions of PIN Diodes. The suggested design shows that the gain at 2.45 GHz, 3.5 GHz, and 5.8 GHz is 3.5 dB, 5 dB, and 6.65 dB, respectively. Our efforts led to a bandwidth of 0.25 GHz for 2.45 GHz, 0.26 GHz for 3.5 GHz and 0.29 GHz for 5.8 GHz. However, MIMO (Multi Input and Multi Output Antenna) configurations must be verified with MIMO characteristic parameters like Envelope Correlation Coefficient(ECC), Diversity Gain(DG), and Mutual Coupling Loss were achieved as below 0.035, 9.9 dB, -30dB to -75 dB respectively. The dimensions of single reconfigurable antenna patch is 11.22mm x 24.7mm. The total size of MIMO reconfigurable antenna is 65mm x 25mm x 1.6mm. |
