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Meander based RF MEMS capacitive switch for Mobile Front End Terminal Antenna support

P. Chawla, R. Khanna
KITM, Kurukshetra University Kurukshetra, IN

Keywords: RF MEMS switch, meander, reconfigurable antenna, seirpenski gasket, fractal antenna


Future RF network’s main requirements are compact size; support to heterogeneous network which drive the requirements for multiband support. Self-similar shaped structure has useful applications in cellular telephone and microwave communications etc. Video conferencing, streaming video are main applications that are included in future networks and requirements for these applications are high data rates which require to have high bandwidth. But our aim to derive an antenna which works on large band of frequencies while having compact size. As size of antenna reduces bandwidth supported by the antenna. So it is required to have small size with high bandwidth. In this paper we propose meander based RF MEMS capacitive switch for mobile front end terminal antenna support for next generation networks. Different number of iteration is performed for its support to different bands. Re-configurability in antenna is another important concept and in this work this reconfigurability is achieved by using RF MEMS switches. Reconfigurablity in antennas offer us tunability of frequency for which we can use our antenna, so that we can use same antenna for large range of frequencies. While electric switching proved useful in assuring re-configurability so that frequency tuning in antenna can be achieved. But MEMS advantages over electric switches leads us use of MEMS in this paper to achieve frequency tuning of antenna. As size and bandwidth requirement is achieved by fractal shape, we propose here Fractal shaped reconfigurable antenna which is reconfigured by RF MEMS switch and it supports bands including K, Ka and Q band. In this paper we propose a switch which uses meander shape beam rather cantilever beam so that improvement in scattering parameters. It has wide potential with multiband support for different applications like K and Ka band which is to be sight for different satellite communication. It is also supposed to support next generation Mobile terminal applications.
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