Compact Dual-Band Bandpass Filter Based on SSL-SIR With Sharp Roll-Off

Authors

  • Juan Yue Institute of Optoelectronics and Electromagnetics Information, School of Information Science and Engineering, Lanzhou University, Lanzhou 730000, P. R. China
  • Guanmao Zhang Institute of Optoelectronics and Electromagnetics Information, School of Information Science and Engineering, Lanzhou University, Lanzhou 730000, P. R. China
  • Zonge Che Institute of Optoelectronics and Electromagnetics Information, School of Information Science and Engineering, Lanzhou University, Lanzhou 730000, P. R. China
  • Yupeng Lun Institute of Optoelectronics and Electromagnetics Information, School of Information Science and Engineering, Lanzhou University, Lanzhou 730000, P. R. China
  • Zhihang Li Institute of Optoelectronics and Electromagnetics Information, School of Information Science and Engineering, Lanzhou University, Lanzhou 730000, P. R. China
  • Junhong Suo Institute of Optoelectronics and Electromagnetics Information, School of Information Science and Engineering, Lanzhou University, Lanzhou 730000, P. R. China

DOI:

https://doi.org/10.13052/2021.ACES.J.361214

Keywords:

DB-BPF, 0。feed structure, SSL-SIR

Abstract

A compact dual-band bandpass filter (DB-BPF) is studied and implemented by using shorted stub-loaded stepped impedance resonator (SSL-SIR) and 0∘∘feed structure in this paper. The resonance frequencies of SSL-SIR can be analyzed and explained by odd−-even mode analysis method and it is used in the design of BPF I. Then, the BPF II is created using the theory of 0∘∘feed structure. Finally, the two structures are combined together to form a DB-BPF by reasonably adjusting the coupling between them and the position of the feed points. The simulation results suggest that the center frequencies of the two passbands are 3.45 and 5.2 GHz, respectively, which are suitable for modern wireless communication systems like 5G and WLAN. Compact size, strong passband isolation, and large stopband bandwidth are all advantages of the proposed DB-BPF filter. A prototype is created and constructed to validate this. The simulated results are in good agreement with the measured results.

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Author Biographies

Juan Yue, Institute of Optoelectronics and Electromagnetics Information, School of Information Science and Engineering, Lanzhou University, Lanzhou 730000, P. R. China

Juan Yue received the B.E. degree in communication engineering from Bohai University, Jinzhou, China, in 2018. She is currently working toward the master’s degree in information and communication engineering with the School of Information Science and Engineering, Lanzhou University, Lanzhou, China. Her current research interests include microstrip filter and metamaterial absorber.

Guanmao Zhang, Institute of Optoelectronics and Electromagnetics Information, School of Information Science and Engineering, Lanzhou University, Lanzhou 730000, P. R. China

Guanmao Zhang received the B.S. degree, the M.S. degree in radio physics, and the Ph.D. degree in radio physics from Lanzhou University, Lanzhou, China, in 1995, 1998, and 2007, respectively. He is currently the Director of the Institute of Optoelectronics and Electromagnetic Information, School of Information Science and Engineering, Lanzhou University. His current research interests include surface plasmonics and its communication sensor applications, micro-nano optical device design and application, non-intrusive intelligent photoelectric sensor technology and application, and modern wireless communication technology. As of now, he has published more than 40 related academic papers, of which more than 20 are included in SCI/EI.

Zonge Che, Institute of Optoelectronics and Electromagnetics Information, School of Information Science and Engineering, Lanzhou University, Lanzhou 730000, P. R. China

Zonge Che received the B.E. degree in electronic information engineering from Lanzhou Jiaotong University, Lanzhou, China, in 2019. She is currently working toward the master’s degree in information and communication engineering with the School of Information Science and Engineering, Lanzhou University. Her current research interests include Terahertz filter, surface plasmonics, metasurface, and metamaterial absorber.

Yupeng Lun, Institute of Optoelectronics and Electromagnetics Information, School of Information Science and Engineering, Lanzhou University, Lanzhou 730000, P. R. China

Yupeng Lun received the B.E. degree in communication engineering from Zhengzhou University, Zhengzhou, China, in 2019. He is currently working toward the master’s degree in electronic and communication engineering with the School of Information Science and Engineering, Lanzhou University, Lanzhou, China. His current research interests include mobile phone antenna, MIMO antenna, and metamaterial absorber.

Zhihang Li, Institute of Optoelectronics and Electromagnetics Information, School of Information Science and Engineering, Lanzhou University, Lanzhou 730000, P. R. China

Zhihang Li received the B.E. degree in communication engineering from Shandong University, Shandong, China, in 2019. He is currently working toward the master’s degree in electronic and communication engineering with the School of Information Science and Engineering, Lanzhou University, Lanzhou, China. His current research interests include frequency selective surface, periodic structures, and metamaterialabsorber.

Junhong Suo, Institute of Optoelectronics and Electromagnetics Information, School of Information Science and Engineering, Lanzhou University, Lanzhou 730000, P. R. China

Junhong Suo received the B.E. degree in electronic information science and technology from Heilongjiang University, Haerbin, China, in 2018. He is currently working toward the master’s degree in electronic and communication engineering with the School of Information Science and Engineering, Lanzhou University, Lanzhou, China. His current research interests include frequency selective surface, periodic structures, and metamaterial absorber by using the FPGA technology.

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Published

2022-03-10

How to Cite

[1]
J. . Yue, G. . Zhang, Z. . Che, Y. . Lun, Z. . Li, and J. . Suo, “Compact Dual-Band Bandpass Filter Based on SSL-SIR With Sharp Roll-Off”, ACES Journal, vol. 36, no. 12, pp. 1623–1629, Mar. 2022.

Issue

2021: Vol 36 Iss 12

Section

Articles