This paper presents the numerical and experimental results of a miniaturized half-mode substrate integrated waveguide HMSIW C-band pass filter with defected ground structure DGS, using two slots and dumbbell shape defected ground structure. These two slots which are etched on the upper plane of the SIW cavity are used to constitute a multiplemode resonator, and the dumbbell-shape fractal DGS etched on the bottom plane can considerably enhance the filter's performances. The manufactured band-pass filter in half mode based on SIW technology has a size nearly half of that of a normal filter. The measurements results obtained by CST in C-band show that the manufactured filter has a large transmitted bandwidth of about 1.53 GHz from 5.97 to 7.5 GHz. The higher measured insertion is about −2.6 dB and the lower return loss measured is about −34 dB. The size of filter design achieved is 7.48 × 38.12 mm 2 which make it the more compact in comparison with some published works at the C-band frequency.

No abstract

No abstract

In this article, a novel compact structure with a compact size and low insertion loss half‐mode substrate integrated waveguide/high pass‐filter dedicated for microwave signal guiding and high signal filtering that screen transmit‐IEEE C‐band signals is optimized, fabricated, and measured. The measurements results of the S parameters are compared with those provided by the commercial software CST Microwave Studio. Agreements between measurements data and the CST software results were achieved. It numerically compares how the transmission in C‐band can be successfully achieved with HMSIW. The Half‐Mode SIW Waveguide/High Pass‐Filter design size achieved is 7.5 × 35 mm2. A size reduction of about 50% in comparison with a similar SIW Waveguide/High Pass‐Filter has been achieved. The measured insertion loss is below −2 dB while the return loss is less than 10 dB. It is attractive which can be used for the radio communication system applications. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:414–418, 2016