Design and Analysis of the Dualband Hybrid Branch Line Couple

Abstract: This paper presents the design of 3dB Hybrid branch line coupler. A hybrid dual band branch line coupler is designed in micro strip configuration to cover frequency band of 2.4 GHz and 5 GHz.The hybrids branch line coupler is one of the most popular for the convenience of design and implementation. The proposed dual band hybrid branch line coupler provides good resonant frequency, isolation, directivity and reasonable insertion loss and return loss and increase bandwidth.  Optimization of the design is carried out in Agilent technologies of Advanced Design System to meet required specification.