طراحی و ساخت یک تزویج کننده مایکرواستریپی فشرده با حذف هارمونیک‌های ناخواسته به کمک تشدیدکننده‌های T شکل و امپدانس پله‌ای
محورهای موضوعی : مهندسی برق و کامپیوترسبحان روشنی 1 , سمیه کریمی 2 , سعید روشنی 3
1 - دانشگاه آزاد اسلامی واحد کرمانشاه
2 - دانشگاه آزاد اسلامی واحد کرمانشاه
3 - دانشگاه آزاد اسلامی واحد کرمانشاه
کلید واژه: تزویج‌کننده, تشدیدکننده T شکل, تشدیدکننده امپدانس پله‌ای و حذف هارمونیک,
چکیده مقاله :
در این مقاله با استفاده از تشدیدکننده‌های T شکل و امپدانس پله‌ای، یک تزویج‌کننده میکرواستریپی جدید با فرکانس کاری یک گیگاهرتز ارائه شده است. تزویج‌کننده پیشنهادی نسبت به تزویج‌کننده‌های پیشین از اندازه کوچک‌تری برخوردار بوده و عملکرد مطلوبی از خود نشان می‌دهد. تزویج‌کننده طراحی‌شده در مقایسه با تزویج‌کننده شاخه‌ای متداول دارای 65% کاهش سایز می‌باشد و همچنین هارمونیک‌های دوم تا هفتم را نیز حذف می‌کند. تزویج‌کننده طراحی‌شده بر روی زیرلایه 5880 RT/duroid با ثابت دی‌الکتریک 2/2، ضخامت mil 31 و تانژانت تلفات 0009/0 ساخته شده است. نتایج اندازه‌گیری و شبیه‌سازی تطبیق خوبی دارند که نشان از صحت طراحی قطعه دارد.
In this paper a novel compact microstrip coupler using T-shaped and stepped impedance resonators is proposed, simulated and fabricated. In the proposed structure long quadrature wavelength lines are replaced with small resonators, which results in size reduction and harmonics suppression. The proposed coupler correctly works at 1 GHz and suppresses 2nd up to 7th unwanted harmonics. Moreover the designed coupler reduces the circuit size more than 65% compared to the conventional coupler.
[1] K. O. Sun, S. J. Ho, C. C. Yen, and D. Van Der Weide, "A compact branch-line coupler using discontinuous microstrip lines," IEEE Microwave and Wireless Components Letters, vol. 15, no. 8, pp. 519-520, Jul. 2005.
[2] Z. Liu and R. M. Weikle, "A compact quadrature coupler based on coupled artificial transmission lines," IEEE Microwave and Wireless Components Letters, vol. 15, no. 12, pp. 889-891, Dec. 2005.
[3] B. F. Zong, G. M. Wang, C. X. Zhang, and Y. W. Wang, "Miniaturised branch-line coupler with ultra-wide high suppression stopband," Electronics Letters, vol. 50, no. 19, pp. 1365-1367, Sept. 2014.
[4] M. Ali, S. K. A. Rahim, M. Z. M. Nor, and M. F. Jamlos, "Branch line coupler using hybrid T-model structure," Microwave and Optical Technology Letters, vol. 54, no. 1, pp. 237-240, Jan. 2012.
[5] J. Gu and X. Sun, "Miniaturization and harmonic suppression of branch-line and rat-race hybrid coupler using compensated spiral compact microstrip resonant cell," IEEE MTT-S International Microwave Symposium Digest, pp. 1211-1214, Long Beach, CA, USA, 17-17 Jun. 2005.
[6] S. Roshani and S. Roshani, "A compact coupler design using meandered line compact microstrip resonant cell (MLCMRC) and bended lines," Wireless Networks, vol. 27, no. 1, pp. 677-684, Jan. 2020.
[7] F. Hosseinkhani and S. Roshani, "A compact branch-line coupler design using low-pass resonators and meandered lines open stubs," Turkish J. of Electrical Engineering & Computer Sciences, vol. 26, no. 3, pp. 1164-1170, May 2018.
[8] S. Dwari and S. Sanyal, "Size reduction and harmonic suppression of microstrip branch-line coupler using defected ground structure," Microwave and Optical Technology Letters, vol. 48, no. 10, pp. 1966-1969, Oct. 2006.
[9] Y. H. Chun and J. S. Hong, "Compact wide-band branchline hybrids," IEEE Trans. on Microwave Theory and Techniques, vol. 54, no. 2, pp. 704-709, Feb. 2006.
[10] M. Beigizadeh, R. Dehghani, and A. Nabavi, "Analysis and design of a lumped-element hybrid coupler using limited quality factor of components," AEU-International J. of Electronics and Communications, vol. 82, no. 1, pp. 312-320, Dec 2017.
[11] W. Shao, J. He, and B. Z. Wang, "Compact rat-race ring coupler with capacitor loading," Microwave and Optical Technology Letters, vol. 52, no. 1, pp. 7-9, Jan. 2010.
[12] K. K. Cheng and W. C. Ip, "A novel power divider design with enhanced spurious suppression and simple structure," IEEE Trans. on Microwave Theory and Techniques, vol. 58, no. 12, pp. 3903-3908, Nov. 2010.
[13] S. Roshani, "A Wilkinson power divider with harmonics suppression and size reduction using meandered compact microstrip resonating cells," Frequenz, vol. 71, no. 11-12, pp. 517-522, Nov. 2017.
[14] J. Wang, B. Z. Wang, Y. X. Guo, L. C. Ong, and S. Xiao, "A compact slow-wave microstrip branch-line coupler with high performance," IEEE Microwave and Wireless Components Letters, vol. 17, no. 7, pp. 501-503, Jul. 2007.
[15] Y. Wang, K. Ma, and S. Mou, "A compact branch-line coupler using substrate integrated suspended line technology," IEEE Microwave and Wireless Components Letters, vol. 26, no. 2, pp. 95-97, Jan. 2016.
[16] Y. J. Sung, C. S. Ahn, and Y. S. Kim, "Size reduction and harmonic suppression of rat-race hybrid coupler using defected ground structure," IEEE Microwave and Wireless Components Letters, vol. 14, no. 1, pp. 7-9, Feb. 2004.
[17] V. R. Reddy, V. K. Velidi, and B. P. Rao, "Wideband harmonic suppressed compact rat-race coupler using triple stub m-shape unit," Progress in Electromagnetics Research Letters, vol. 96, no. 1, pp. 81-90, Mar. 2021.
[18] A. A. Abdulbari, S. K. A. Rahim, M. Z. A. Abd Aziz, K. G. Tan, N. K. Noordin, and M. Z. M. Nor, "New design of wideband microstrip branch line coupler using T-shape and open stub for 5G application," International J. of Electrical and Computer Engineering, vol. 11, no. 2, pp. 1346-1355, Apr. 2021.
[19] R. K. Barik, Q. S. Cheng, N. C. Pradhan, and K. S. Subramanian, "Highly miniaturized wideband 3-dB branch-line hybrid with second harmonic-suppression," Microwave and Optical Technology Letters, vol. 62, no. 6, pp. 2248-2256, Jun. 2020.
