Abstract—In this paper, a new microstrip duplexer topology is presented for Digital Communication System (DCS) at 1.8 GHz and for ISM Band at 2.45 GHz. A new approach for the design and the conception of the compact planar duplexer in microstrip technology is proposed. The suggested duplexer is based on two band pass filters (BPFs) using coupled microstrip triangular loop resonators. In this work Electromagnetic (EM) simulation with high meshing density and circuit modeling are achieved to meet some stringent performances concerning isolation, size, insertion loss and return loss.

Index Terms—Duplexer, triangular loop resonator, isolation, microstrip technology.

A. Chinig, J. Zbitou, A. Errkik, and H. Bennis are with the Laboratoire LITEN Faculté Polydisciplinaire, Khouribga, Morocco (email : Abdo.chinig@gmail.com).
A. Tribak is with the Institut national des postes et télécommunications, Rabat, Morocco.
M. Latrach is with the RF and Hyper group ESEO, Angers France.

Cite:A. Chinig, J. Zbitou, A. Errkik, A.Tribak, H. Bennis, and M. Latrach, "Microstrip Triangular Loop Resonator Duplexer," International Journal of Computer and Communication Engineering vol. 2, no. 4, pp. 425-427, 2013.