Design of K-Band Substrate Integrated Waveguide Band-Pass Filter with High Rejection

Ahmed Rhbanou, Seddik Bri

Abstract


This article presents the design of K-band Substrate Integrated Waveguide (SIW) Band-pass filter with high rejection, by using the topology with iris and the SIW resonators. The simulated results of this filter have shown that the passband is from 17.3 GHz to 19.3 GHz, while the insertion loss is 1.35 dB within 10.9 % bandwidth around 18.3 GHz and input return loss in the passband is better than 15 dB, with high rejection of -57.88 dB at the frequency 24.07 GH. All the structures are designed on a single substrate of Rogers R04003 permittivity 3.55. The compatibility with planar circuits is provided via a specific microstrip transition (microstrip tapered transitions).

Keywords


SIW cavity resonator, microwave filters, transition, SIW-microstrip technology.

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DOI: http://dx.doi.org/10.1590/2179-10742015v14i2473

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