Renaissance Electronics Corporation announces three WiMAX circulator designs that are extended temperature devices with minimal insertion loss. These parts replace older style crimp components with screw top designs that well suited for mass production with consistent test results, particularly at the higher 3.3 to 3.8 GHz frequencies. They also cover the entire WiMAX bandwidth with one device. The 2.3 to 2.5 GHz and the 3.3 to 3.8 GHz devices conform to ¾ inches drop-in package applications, while the 4.9 to 5.9 GHz design supports ½ inches drop-in applications. Samples and test fixtures are available.