ADT1.5-122+ Core & Wire Transformer: High Performance Balun for RF Applications | Mini-Circuits 2025-04-22 The ADT1.5-122+ from Mini-Circuits is a high-performance 1:1.5 core & wire balun transformer for RF/IF and RFID applications. Operating from 20MHz to 1.2GHz with low insertion loss (2.0dB max) and excellent return loss (11.92dB min). Ideal for wireless communication, antenna coupling, and data transmission systems.