Designed for WiMAX applications and other wireless metro area network systems, the WiMAX cavity filter series from MtronPTI covers the 2.3 GHz to 2.7 GHz frequency range with emphasis on low-loss narrowband systems. The series utilizes a re-configurable design platform fully modeled in EM (Electromagnetic) simulation software, and tested with a stringent design verification process. The available bandwidth range is 0.04 to 0.20% 1dB. A versatile configuration allows multiple cross-coupling schemes with transmission zeroes, placed on either side of the passband and in any combination. Standard housings can be reconfigured permitting reduced lead times for custom applications. Connector locations are flexible and configurable. These cavity filters also feature extended rejection performance, achieved with an integrated lowpass filter and can also be used in either Rx (radio receive) and/or Tx (radio transmit) mode. Modules with two, three, four, or six filters of identical or different configurations are available for systems applying MIMO or other antenna diversity technology. Duplexers can be developed using the same re-configurable platform and are offered as a single unit or modules with multiple duplexers.