Integration of RF-MEMS Switches with a Band-Reject Reconfigurable Ultra-Wideband Antenna on SiOz Substrate

摘要

An ultra-wideband reconfigurable antenna for WLAN environments integrated with RF-MEMS switches is presented. Using MEMS, the antenna rejects on-demand the 5-6 GHz WLAN 802.11a frequency band. The design is integrated on-wafer with MEMS switches and high-resistive biasing lines to minimize interference of the packaging and allow biasing through the designed bias pads. The antenna's design procedure, fabrication and measured reflection coefficient are described. Results show satisfactory band-rejection quality and (most-important), very little interference of the MEMS and biasing circuitry with the antenna itself. Such designs can be used in low-loss future UWB antennas that minimize interference to nearby WLAN receivers.