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Balun bandpass filter based on multilayer substrate integrated waveguide power divider

Balun bandpass filter based on multilayer substrate integrated waveguide power divider

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© The Institution of Engineering and Technology
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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.

Inspec keywords: band-pass filters; power dividers; substrate integrated waveguides

Other keywords: compact multilayer substrate integrated waveguide balun bandpass filter; input-output ports; SIW power divider; substrate integrated waveguide power divider; middle metal-ground; reverse phase characteristic; compact multilayer SIW balun bandpass filter

Subjects: Filters and other networks; Waveguide and microwave transmission line components

References

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      • Deslandes, D., Wu, K.: `Millimeter-wave substrate integrated waveguide filters', Proc. IEEE Canadian Conf. Electrical Computer Engineering, (CCECE'03), 2003, Montreal, Canada, 3, p. 1917–1920.
    5. 5)
      • N. Marcuvitz . (1965) Waveguide handbook.
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