Design and Implementation of a 2.45 GHz Band-Stop Filter Using Single/Three Open Stubs

Year 2023, Volume: 6 Issue: 2, 24 - 30, 31.12.2023

Büşra Öztürk , Özlem Coşkun

Abstract

The importance of filter structures in RF/microwave applications is quite high. These filters are frequently used in microwave systems, especially in satellite and mobile communication systems. Generally, in devices such as oscillators and mixers; to block unwanted signals, band-stop filters are added to the structures. One of the WLAN applications, IEEE 802.11b has a maximum raw speed of 11Mbit/s and is used to connect the same devices in the original standard. Devices operating in the IEEE 802.11b standard experience interference from other devices (microwave ovens, bluetooth devices, cordless phones) operating at 2.45 GHz. As the main goal of this study; in order to prevent this interference, band-stop filter circuit design with single/three open stubs were carried out at the frequency of 2.45 GHz. Thanks to the realized band-stop filter designs; unwanted signals are filtered and the desired signals are transmitted successfully.

Keywords

2.45 GHz, Advanced Design System (ADS), Microstrip Filter, Microwave System

References

• Borja, A. L., González, A. B., Boria, V. E. (2020) Design procedure of continuous profile stopband filters implemented with empty substrate integrated coaxial lines. IEEE Transactions Microwave Theory Techiques 68(4): 1520- 1528.
• Nasiri, B., Errkik, A., Zbitou, J., Tajmouati, A., E Abdellaoui, L., Latrach, M. (2017) A new compact microstrip band-stop filter by using square split ring resonator. International Journal of Microwave and Optical Technology 12(5): 360-366.
• Yechou, L., Tribak, A., Mohamed, K., Zbitou, J., Bouyahyaoui, A., Sanchez, A. M. (2017) Planar wideband bandstop filter with T-inverted shaped open stubs for wideband applications. International Journal of Microwave and Wireless Technologies 9(2): 773-780.
• Kong, M., Wu, Y., Zhuang, Z., Liu, Y. (2018) Wideband bandstop filter with extreme sharp skirt selectivity. IEEE Microwave Wireless Components Letters 28(12):1104-1106.
• Gupta, A., Chauhan, M., Rajput, A., Mukherjee, B. (2020) Wideband bandstop filter using L-shaped and quad mode resonator for C and X band application. Electromagnetics 11: 1- 9.
• Gupta, A., Rajput, A., Chauhan, M., Mukherjee, B. (2021) Wideband band-stop filter for C-band and S-band applications using finite integration in time-domain technique. Advances in Computational Intelligence and Communication Technology Springer 359- 366.
• Feng, W., Hong, M., Che, W., & Xue, Q. (2017) Dual-band microstrip bandstop filter with multiple transmission poles using coupled lines. IEEE Microwave and Wireless Components Letters 27(3), 236–238.
• Bowick, C. (1982) RF circuit design. Butterworth-Heinemann, USA.
• Carr, C.C. [2001] Secrets of RF circuit design. McGraw-Hill, USA.
• Kınayman, N., Aksun, M.I. (2005) Modern microwave circuits. Norwood, MA, USA, Artech House.
• Pozar, M. (1998) Microwave engineering. Newtork, John Wiley and Sons.
• Hunter, I. C., Billonet. L., Jarry, B., Guillon, P. (2002) Microwave filters applications and technology. IEEE Trans. on Microwave Theory and Tech. Vol.50 No:3 pp.794-805.
• Hsieh, M. Y., Wang, S. M. (2005) Compact and wideband microstrip band stop filter. IEEE Microwave and Wireless Components Letters, 15(7), 472-474.
• Che, W., Feng, W., Deng, K. (2010) Microstrip dual-band band stop filter of defected ground structure and stepped impedance resonators. International Journal of Electronics 97(11), 1351–1359.
• Habibi, R., Ghobadi, C. H., Nourinia, J., Ojaroudi, M., Ojaroudi, N. (2012) Very compact broad band stop filter using periodic L-shaped stubs based on self-complementary structure for X-band application Electronics Letters, 48 (23), 1481-1482.
• Mohan, D., Jwala, A., Sreekumar, M., Krishnan, T. B., Menon, S. K. (2018) Realization of band stop filter using perturbed microstrip line. Second International Conference on Inventive Communication and Computational Technologies (ICICCT), 20-21 April, Coimbatore.
• Liu, G., Xu, J., Liu, Z. (2017) A narrowband absorptive band-stop filter based on a resistor-loaded compact resonator. Progress in Electromagnetics Research Symposium - Spring (PIERS), 22-25 May, St. Petersburg, Russia.
• Kusama, Y., Isozaki, R. (2019) Compact and broadband microstrip band-stop filters with single rectangular stubs Applied Sciences MDPI Journals, 9(2), 248.
• Xin, Li et al. (2023) Band-stop filter based on glide-symmetric substrate-ıntegrated coaxial lines for band-gap control and bandwidth customization. Phys. Rev. Applied 19, 024018.
• Xie, Y., Chen, F.C. (2021) Dual-band and wide stopband coaxial filters using open-circuited-stub-loaded resonators. IEEE Trans. Circuits Syst. II Express Briefs 68, 1872.