Microstrip Diplexers with Double-Stub Bandpass Filters

M. Khalaj-Amirhosseini (1) , M. Moghavvemi (1) , Hossein Ameri Mahabadi (1) , A. Attaran (1)

1 Department of Electrical Engineering

This paper presents a microstrip diplexer using two Double-Stub Band-Pass Filters (DS-BPFs), composed of several double-stubs connected to a main microstrip line. Each DS-BPF has a null at the center frequency of the other. Therefore, these types of filters are suitable for diplexers with two near frequencies. A diplexer at frequencies 5.875 and 6.225 GHz is designed, fabricated and measured. Measured results of the fabricated diplexer have a good agreement with the calculated results.

Mots clés: Diplexers; Double-Stubs; Microstrip Transmission Lines

Domaines: Electronique

M. Khalaj-Amirhosseini, M. Moghavvemi, Hossein Ameri Mahabadi, A. Attaran. Microstrip Diplexers with Double-Stub Bandpass Filters. International Journal on Communications Antenna and Propagation, 2011, 1 (1), pp.64-67. ⟨hal-00722715⟩