The LDM0Q1G8910BE005 from Murata is a balun designed for Bluetooth, Wi-Fi and ZigBee applications. They have a pass band from 1.805 to 1.99 GHz with unbalanced port impedance of 50 Ohms and balanced port impedance of 100 ohms. These baluns are available in a standard size from 0.65 x 0.50 x 0.3 mm. They are based on Muratas LTCC multilayer ceramics integration technology.