Frequency-Reconfigurable Antennas for Multiradio Wireless Platforms

Novel Conception of a Tunable RF MEMS Resonator

“…The RF MEMS switches present several advantages compared to the conventional semiconductor components, such as, low insertion losses, good linearity, low power consumption, very important cut-off frequency, small volume and low fabrication cost [3]. However, the RF MEMS switches show some limitations, such as, the switching speed reduced to a few microseconds as a result of the mechanical structure movement [4].…”

A Novel Reconfigurable MMIC Antenna with RF-MEMS Resonator for Radar Application at K and Ka Bands

“…Actually, The RF-MEMS switches present many advantages compared to the conventional semiconductor components, such as, low insertion losses, good linearity, low power consumption, very important cut-off frequency, small volume and low cost fabrication [10]. However, the RF-MEMS switches have some limitations, such as, their switching speed, usually limited to a few microseconds caused by the mechanical structure movement [11].…”

A Frequency-Reconfigurable Monopole Antenna with Switchable Stubbed Ground Structure

“…Various methods, such as using wire, patch, planer-inverted F antennas to achieve frequency agility have been reported in [6]. Recently, lots of frequency reconfigurable antennas with switchable ground structure have been reported [7], [8].…”