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Khajavi, Morteza, Farshidi, Ebrahim, Soroosh, Mohammad, Ajabi, Shahrzad. (1405). Compact Wide-Band and Narrow-Band Microstrip Bandpass Filters Using the LC Equivalent Model. هنرهای کاربردی, (), 1-8. doi: 10.22075/mseee.2026.40492.1251
Morteza Khajavi; Ebrahim Farshidi; Mohammad Soroosh; Shahrzad Ajabi. "Compact Wide-Band and Narrow-Band Microstrip Bandpass Filters Using the LC Equivalent Model". هنرهای کاربردی, , , 1405, 1-8. doi: 10.22075/mseee.2026.40492.1251
Khajavi, Morteza, Farshidi, Ebrahim, Soroosh, Mohammad, Ajabi, Shahrzad. (1405). 'Compact Wide-Band and Narrow-Band Microstrip Bandpass Filters Using the LC Equivalent Model', هنرهای کاربردی, (), pp. 1-8. doi: 10.22075/mseee.2026.40492.1251
Khajavi, Morteza, Farshidi, Ebrahim, Soroosh, Mohammad, Ajabi, Shahrzad. Compact Wide-Band and Narrow-Band Microstrip Bandpass Filters Using the LC Equivalent Model. هنرهای کاربردی, 1405; (): 1-8. doi: 10.22075/mseee.2026.40492.1251

Compact Wide-Band and Narrow-Band Microstrip Bandpass Filters Using the LC Equivalent Model

Journal of Modeling and Simulation in Electrical and Electronics Engineering
مقالات آماده انتشار، اصلاح شده برای چاپ، انتشار آنلاین از تاریخ 05 اردیبهشت 1405    اصل مقاله (594.08 K)
نوع مقاله: Research Article
شناسه دیجیتال (DOI): 10.22075/mseee.2026.40492.1251
نویسندگان
Morteza Khajavi1؛ Ebrahim Farshidi* 1؛ Mohammad Soroosh2؛ Shahrzad Ajabi1
1Department of Electrical Engineering, Faculty of Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran
2. Department of Electrical Engineering, Faculty of Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran
تاریخ دریافت: 16 بهمن 1404،  تاریخ بازنگری: 07 اسفند 1404،  تاریخ پذیرش: 01 اردیبهشت 1405 
چکیده
This paper presents an improved design methodology for developing two types of microstrip bandpass filters, a narrowband filter and a wideband filter, employing stepped-impedance resonators (SIRs) and parallel stubs. The fundamental resonator integrates two parallel stubs and a centrally located air gap within a stepped-impedance structure. The corresponding even- and odd-mode capacitances are evaluated, and an additional SIR is coupled to the primary resonator to achieve the desired bandpass response through dimensional optimization. To verify the electromagnetic simulation results, an equivalent LC circuit model is extracted and analyzed, demonstrating strong agreement with the full-wave response. Owing to its compact geometry and structurally efficient configuration, the proposed filter is well suited for integrated microwave systems. The wideband implementation is designed to operate at a center frequency of 10.02 GHz, exhibiting an insertion loss of 1.03 dB, a return loss of 30.1 dB, and 1.33 GHz bandwidth. In contrast, the narrowband design achieves a center frequency of 2.4 GHz with an insertion loss of 0.15 dB, a return loss of 26.26 dB, and 102 MHz bandwidth.
کلیدواژه‌ها
Microstrip Bandpass Filter؛ Narrowband Filter؛ Stepped-impedance resonators (SIRs)؛ Wideband Filter
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