Title :
Balun bandpass filter based on multilayer substrate integrated waveguide power divider
Author :
Hui, J.N. ; Feng, W.J. ; Che, W.Q.
Author_Institution :
Sch. of Electron. & Opt. Eng., Nanjing Univ. of Sci. & Technol., Nanjing, China
Abstract :
A compact multilayer substrate integrated waveguide (SIW) balun bandpass filter is proposed. A 180° reverse phase characteristic between the input/output ports can be easily achieved by the middle metal-ground of the SIW power divider. Four inductive posts are added to the multilayer SIW power divider to realise a passband. Good in-band balance performance (amplitude and phase imbalance are less than 0.35°dB and 2°) over the passband are achieved for the balun bandpass filter.
Keywords :
band-pass filters; power dividers; substrate integrated waveguides; SIW power divider; compact multilayer SIW balun bandpass filter; compact multilayer substrate integrated waveguide balun bandpass filter; input-output ports; middle metal-ground; reverse phase characteristic; substrate integrated waveguide power divider;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2012.0479
