Size reduction and harmonic suppression of microstrip branch-line coupler using defected ground structure

Novel defected ground structure element

Novel defected ground structure element with triple transmission zeros and its application for multispurious suppression of microstrip parallel-coupled-line bandpass filter

✍ Sio-Weng Ting; Kam-Weng Tam; Rui Martins 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 379 KB 👁 1 views

## Abstract A novel compact defected ground structure (DGS) element with triple transmission zeros is proposed. The zeros can be tuned individually by the DGS geometry and the overall etched area is kept as compact as that of the conventional structure with single zero. The traditional microstrip p