Kemal GüvenliSibel Yeni̇KayaMustafa Seçmen2025-10-06202113921215, 202957311392-12152029-573110.5755/j02.eie.27479https://www.scopus.com/inward/record.uri?eid=2-s2.0-85101533526&doi=10.5755%2Fj02.eie.27479&partnerID=40&md5=591fa33b20daa6a8662702e862394732https://gcris.yasar.edu.tr/handle/123456789/9009In this paper the Microstrip-Substrate Integrated Waveguide (M-SIW) bandpass filter is designed simulated and fabricated based on the theoretical analysis. The Substrate Integrated Waveguide (SIW) highpass filter and the microstrip lowpass filter are combined in a hybrid design to achieve the M-SIW bandpass filter in the X-band. This design is more comprehensible and easier to achieve a bandpass filter at a desired frequency. The SIW highpass filter and the microstrip lowpass filter are connected in series to achieve the bandpass filter. To the measured results of the fabricated M-SIW bandpass filter the center frequency is 10.20 GHz and the bandwidth is 2.40 GHz. When the analytical and measurement results are compared the frequency change in the cut-off frequency is 6.02 % and the frequency change in the bandwidth is 8.74 %. It is generally seen that analytical simulation and measurement results are compatible with each other. The M-SIW bandpass filter can be broadly used in radar Worldwide Interoperability for Microwave Access (WiMAX) and satellite technologies. The filters are simulated in Computer Simulation Technology (CST) Studio Suite. © 2021 Elsevier B.V. All rights reserved.EnglishBandpass Filter, Cascaded Integration, Microstrip, Substrate Integrated WaveguideArticle