Baluns use ST’s process integrating high-quality RF passive components on a single glass substrate. As well as balanced/unbalanced conversion, they can also integrate a matching network in a footprint smaller than 1 mm² for the complete function. ST's latest balun-the 1.2 mm² footprint BALF-NRG-02D3-is customized for our BlueNRG-1 and new BlueNRG-2 transceivers, reducing RF complexity and providing optimized link budget

This device is an ultra-miniature balun which integrates matching network and harmonics filter. Matching impedance has been customized for the BlueNRG ST transceiver. The BALF-NRG-02D3 uses STMicroelectronics IPD technology on non-conductive glass substrate which optimizes RF performance

50 Ω nominal input / conjugate match to BlueNRG device
Low insertion loss
Low amplitude imbalance
Low phase imbalance