طراحی و ساخت فیلتر مینیاتوری باند وسیع مایکروویو با استفاده از حلقه ریزنواری مستطیلی بارگذاری‌شده با استاب‌های مدارباز

نوع مقاله : مقاله پژوهشی

نویسنده

استادیارگروه مهندسی برق- دانشگاه ولی عصر رفسنجان (عج)، رفسنجان، ایران

چکیده

در این مقاله، یک فیلتر جدید باند وسیع بسیار کوچک با استفاده از حلقه مستطیلی بارگذاری­شده با دو استاب مدارباز ارائه شده است. در این طراحی به‌منظور رسیدن به پاسخ فرکانسی یک فیلتر میان‌گذر دارای باند عبور وسیع، یک حلقه ریزنواری مستطیل‌شکل که در میان دو خط انتقال فاصله‌دار دوتایی دارای تزویج موازی قرار گرفته‌، استفاده شده است. با استفاده از این پیکره‌بندی، چهار قطب انتقال تولید می‌شود که به‌منظور کنترل قطب‌های انتقال در باند عبور، از دو استاب مدارباز استفاده شده است. به‌منظور کاهش ابعاد فیلتر طراحی شده، دو استاب مدارباز در داخل حلقه مستطیل‌شکل تعبیه شده‌اند. برای اعتبار بخشی به روش طراحی، ساختار فیلتر پیشنهادی ساخته و اندازه‌گیری شده است. با توجه به نتایج به‌دست‌آمده به‌وضوح دیده می‌شود که نتایج اندازه‌گیری با نتایج شبیه‌سازی سازگاری خیلی خوبی دارند. فیلتر پیشنهادی دارای پهنای باندی است که محدوده  GHz 2/3 تا  GHz 6/10 را پوشش می‌دهد که این محدوده فرکانسی معادل پهنای باند کسری % 5/107 است. فیلتر طراحی‌شده دارای لبه‌های تیز، تلفات باند عبور بسیار کم و مهم‌تر از همه، ابعاد کوچک است.

کلیدواژه‌ها


عنوان مقاله [English]

Design and Fabrication of the Miniaturized Ultra-Wide Band Pass Filter Using the Microstrip Rectangular Ring Loaded by Open Stubs

نویسنده [English]

  • Mostafa Danaeian
Department of Electrical Engineering, Vali-E-Asr University of Rafsanjan, Rafsanjan, Iran
چکیده [English]

In this article a miniaturized ultra-wideband (UWB) bandpass filter (BPF) using the microstrip rectangular ring loaded by two open stubs is presented. The proposed structure consists of two doublet parallel coupling gaps at each side of a microstrip ring. In comparison with some other filters, this structure shows a significantly wider passband due to the introduction of a cross-coupling between the feed lines (input and output) which generates four pairs of transmission poles in the passband. In order to control the transmission poles in the pass band and adjust the transmission poles near the lower and upper edges of the filter, two open stubs have been loaded on the microstrip rectangular ring. Consequently, a compact four poles ultra-wide bandpass filter is designed which exhibits extremely sharp rejection skirts around the target passband. The proposed filter has a passband that covers 3.2 to 10.6 GHz and its measured 3 dB fractional bandwidth is about 107.5%. In order to validate the performance of the proposed technique, the designed UWB band-pass filter is fabricated and experimental verification is provided. A good agreement has been found between the results obtained by simulation and the measurements. Furthermore, rejection level better than 20 dB in upper stopband is extended to around 15 GHz. To our knowledge, the size of the proposed ultra-wideband filter is more compact in comparison with known similar filters.

کلیدواژه‌ها [English]

  • ultra-wideband (UWB)
  • bandpass filter (BPF)
  • microstrip rectangular ring
  • doublets parallel coupling gaps
  • open stub
  • compact size
   [1]      Federal Communications Commission. "Federal Communications Commission revision of part 15 of the commission’s rules regarding ultra-wideband transmission system from 3.1 to 10. 6 GHz," Washington DC, USA, 2002.##
   [2]      D. Jung, J. Lee, and K. Chang, “Wideband Bandpass Filter Using Microstrip Ring,” Microwave and Optical Technology Letters, Vol. 53, No. 1, pp. 154-155, 2011.##
   [3]      L. Siang-Wen, M. Weng, C-Y. Hung, S-J. Chang, "Design of a compact ultra-wideband bandpass filter with an extremely broad stopband region," IEEE Microwave and Wireless Components Letters, Vol. 26, No. 6, pp. 392-394, 2016.##
   [4]      Y. Li, L. Zhu, W.Choi, K-W. Tam, R. Zhang, J. Wang, "Wideband microstrip-to-microstrip vertical transition with high filtering selectivity using open-circuited slot-line SIR," IEEE Microwave Wireless Compon Letters, Vol. 27, No. 4, pp. 329-331, 2017.##
   [5]      K. Puja, M. Pal, P. Sarkar, R. Ghatak, "Compact UWB bandpass filter with dual-notch bands using asymmetric tri-section stepped impedance resonator," International Journal of RF and Microwave Computer-Aided Engineering, Vol. 28, No. 6, pp. e21292, 2018.##
   [6]      L. Haiwen, P. Wen, H. Jiang, and Y. He, "Wideband and low-loss high-temperature superconducting bandpass filter based on metamaterial stepped-impedance resonator," IEEE Transactions on Applied Superconductivity, Vol. 26, No. 3, pp. 1-4,  2016.##
   [7]      J. Minjae, B-W. Min, "A highly selective UWB bandpass filter using stepped impedance stubs," International Journal of Microwave and Wireless Technologies, Vol. 10, No. 3, pp. 301-307, 2018.##
   [8]      Z. Tianliang, M. Tian, Z. Long, M. Qiao, Z. Fu, "High-temperature superconducting multimode ring resonator ultrawideband bandpass filter," IEEE Microwave and Wireless Components Letters, Vol, 28, No. 8, pp. 663-665, 2018.##
   [9]      H. Tao, Z. Hai Shao, Z. Chen, "Miniaturized wideband bandpass filter with enhanced selectivity and stopband suppression," Microwave and Optical Technology Letters, Vol. 60, No. 3 pp. 769-772, 2018.##
[10]      Z. Chun-Xia, P-P. Guo, K. Zhou, W. Wu, "Design of a compact UWB filter with high selectivity and super wide stopband," IEEE Microwave and Wireless Components Letters, Vol. 27, No. 7, pp. 636-638, 2017.##
[11]      M. Kazemi, S. Lotfi, H. Siahkamari, M. Mohammadpanah, "UWB Bandpass Filter with Ultra-wide Stopband based on Ring Resonator," Frequenz, Vol. 72, No. 5-6, pp. 245-252, 2018.##
[12]      J. Khalilpour, "A compact and sharp ultra-wide bandpass filter by using short-stub-loaded rectangular ring and split ring resonators," Electromagnetics, Vol. 38, No. 6, pp. 352-365, 2018.##
[13]      W. Bin, L. Jing, W. Huang, F. Tan, "Ultra-Wideband Filter with Dual Notch Bands Based on Ring Resonator," Electromagnetics, Vol. 37, No. 4, pp. 212-223, 2017.##
[14]      Y. Shang, W. Feng, W. Che, "Wideband reconfigurable bandpass filter using coupled lines loaded with varactor loaded stubs," International Journal of RF and Microwave Computer-Aided Engineering, Vol. 28, No. 2, pp. e21195, 2018.##
[15]      Z. Liguo, H. Li, Z. Long, H. Wu, T. Zhang, M. Qiao, "Compact high temperature superconducting multi-mode ultra-wideband filter," Microwave and Optical Technology Letters, Vol. 61, No. 2, pp. 357-360, 2019.##
[16]      S. Shuai, B. Wei, X. Guo, B. Cao, X. Wang, L. Jiang, X. Lu, "Superconducting Wideband Bandpass Filter Based on Triple-Mode Resonator," IEEE Microwave and Wireless Components Letters, Vol.  28, No. 7, pp. 588-590, 2018.##
[17]      M. Pengyu, B. Wei, X. Lu, Z. Xu, X. Wang, S. Shang, B. Li, X. Guo, B. Cao, "Synthesis Design of Wideband High-Selectivity HTS Filter by Cascading Dual-Mode Resonators," IEEE Transactions on Applied Superconductivity, Vol. 28, No. 5, pp. 1-7, 2018.##
[18]      H. Liwen, S. Zhang, "Ultra-wideband ridged half-mode folded substrate-integrated waveguide filters," IEEE Microwave and Wireless Components Letters, Vol. 28, No. 7, pp. 579-581, 2018.##
[19]      M. Danaeian, E. Zarezadeh, M-H. Gholizadeh, A-R Moznebi, J. Khalilpour, "A Compact and Sharp Rejection Ultra-Wideband Bandpass Filter Based on Short and Open Stub-Loaded Multiple Mode Resonators," Journal of Electrical Engineering & Technology, Vol, 15, No. 1, pp. 469-476, 2020.##
[20]      Pozar, D. M., “Microwave Engineering 4e”; John Wiley & Sons, New York, 2012.##
[21]      J. S. Hong, “Microstrip Filters for RF/Microwave Application”; 2nd Edition, John Wiley & Sons, Inc., 2011.##