RF MEMS switching devices are very important for reconfigurable antenna signal and its paths. This paper presents the review study of four different reconfigurable antenna that employs RF Micro-Electro- Mechanical Systems (RF MEMS) technology simultaneously with bandwidth enhancement techniques.
The RF MEMS switch can operate at 0.1-40GHz frequency range. The thickness of cantilever, gap of electrodes are some parameter of switches by varying these parameters the performance of switches can changed. Every design is fabricated and compare with simulated one. The simulation and measured result shows the good degree of agreement. The parameter comparison is also done in this paper.