A Review of Achieving Frequency Reconfiguration for Antennas in Wireless Communications

Reconfigurable antennas are a type of smart antenna that is able to change whose properties, including resonant frequency, polarization, radiation pattern, and combination these properties. can switch between their configuration states operate at different frequency bands for multiple standards, patterns direction finding, or polarization diversity. Therefore, they solution modern wireless communications meet the requirements system’s multi-functionality. This paper presents reconfigurable with various techniques obtain reconfiguration. The be achieved using electrical components (PIN diodes, RFMEMSs, varactors, FETs), optical materials (liquid crystal ferrites), physical alteration structures. comparison summarization reconfiguration described in paper. publications on mentioned illustrated discussions.