Abstract
A multiband C shape slot reconfigurable MIMO antenna integrated with wideband sensing antenna is proposed for cognitive radio (CR) application. The wideband sensing antenna designed for CR is offering an impedance bandwidth of 5.15 GHz (0.85–6 GHz). The frequency-reconfigurable C slot-based MIMO antenna referred as communicating antenna in CR is capable to switch between multiple frequency sub-bands, i.e., 1.8, 2.1, 2.5 and 3.6 GHz, assigned for various communication applications. A two-element reconfigurability MIMO antenna is acknowledged by utilizing the PIN diode. The proposed MIMO antenna for CR could improve data throughput and channel capacity of the system. Both antennas share the same substrate/platform could be used to sense electromagnetic spectrum in a wide range and to communicate using GSM, LTE, UMTS, 3G, Wi-Fi, Bluetooth, WiMAX and WLAN frequency bands, respectively.
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