Hostname: page-component-848d4c4894-2pzkn Total loading time: 0 Render date: 2024-06-01T17:17:41.672Z Has data issue: false hasContentIssue false
  • English
  • Français

Absorptive reconfigurable bandstop filter with ultra-wide frequency tuning range using distributed lossy resonators

Published online by Cambridge University Press:  08 April 2024

Qun Li Open the ORCID record for Qun Li [Opens in a new window]
Qun Li*
Affiliation:
Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
*
Email: qunliuestc@gmail.com
Get access Rights & Permissions [Opens in a new window]

Abstract

An absorptive reconfigurable bandstop filter (BSF) with compact size and ultra-wide frequency tuning range using distributed lossy resonators is presented. In each reconfigurable bandstop resonator, a varactor and a PIN diode are utilized as the control and absorption devices. When the PIN diodes are in off and on states, the upper and lower frequency tuning ranges of stopbands can be obtained, respectively. Therefore, the ultra-wide total frequency tuning range which is the combination of the upper and lower frequency tuning ranges can be realized. Meanwhile, the stopband frequency and bandwidth tuning can be independently controlled by bias voltages. The resistances in the varactors and PIN diodes can dissipate the electromagnetic power and thus result in absorptive stopband without using extra absorptive circuits. The stopband suppression level and stopband absorption ratio are proportional to the number of distributed lossy resonators. For demonstration, an absorptive reconfigurable BSF prototype using six pairs of distributed lossy resonators is designed and fabricated. The measured total frequency tuning range is 3.03–6.39 GHz (71%) with the suppression level of 20 dB, while the frequency tuning range with the suppression level of 10 dB is 2.04–6.39 GHz (103%).

Keywords

absorptive filtermicrowave bandstop filter (BSF)reconfigurable filterswitchable filtertunable filter
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , First View , pp. 1 - 9
Check for updates
Copyright
© The Author(s), 2024. Published by Cambridge University Press in association with The European Microwave Association.

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Pozar, DM (2012) Microwave Engineering, 4th edn. Hoboken, NJ: Wiley.Google Scholar
Zhang, Y and Wu, KL (2022) General method for synthesizing dispersive coupling matrix of microwave bandpass filters. International Journal of Microwave and Wireless Technologies 14(3), 379–386.CrossRefGoogle Scholar
Lu, D, Zhu, B and Yu, M (2022) Synthesis approach to planar filter design using new cascade hybrid triplet block with arbitrary-placed TZ pair. IEEE Transactions on Microwave Theory & Techniques 70(4), 2196–2206.CrossRefGoogle Scholar
Luo, C, Wong, SW, Lin, JY, Yang, Y, Yu, XZ, Feng, LP, Tu, ZH and Zhu, L (2020) Quasi-reflectionless microstrip bandpass filters using bandstop filter for out-of-band improvement. IEEE Transactions on Circuits and Systems II: Express Briefs 67(10), 1849–1853.Google Scholar
Lin, YS, Huang, YC and Jiang, QY (2022) Miniature dual-band absorptive bandstop filters with improved passband performance. IEEE Transactions on Circuits and Systems I: Regular Papers 69(6), 2339–2350.CrossRefGoogle Scholar
Li, Q, Zhang, YH, Feng, X and Fan, Y (2016) Tri-band filter with multiple transmission zeros and controllable bandwidths. International Journal of Microwave and Wireless Technologies 8(1), 9–13.CrossRefGoogle Scholar
Qu, L, Zhang, Y, Li, Q and Fan, Y (2020) Compact UWB BPF with a notched band using a single perturbed HMSIW cavity. International Journal of Microwave and Wireless Technologies 12(8), 809–814.CrossRefGoogle Scholar
Zhu, H, Sun, Y and Sun, Y (2020) Design of miniaturized on-chip bandpass filters using inverting-coupled inductors in (Bi)-CMOS technology. IEEE Transactions on Circuits and Systems I: Regular Papers 67(2), 647–657.CrossRefGoogle Scholar
Lin, TY and Wu, TL (2020) Balanced bandpass filter with common-mode reflectionless feature by terminated coupled lines. IEEE Transactions on Electromagnetic Compatibility 62(4), 1090–1097.CrossRefGoogle Scholar
Ma, K, Wang, Y, Li, W and Chen, Y (2019) A novel compact self-packaged SPDT switchable BPFs based on SISL platform. IEEE Transactions on Industrial Electronics 66(9), 7239–7249.CrossRefGoogle Scholar
Cheng, F, Lu, P and Huang, K (2020) Center frequency and bandwidth switchable substrate integrated waveguide filters. International Journal of Microwave and Wireless Technologies 12(4), 282–287.CrossRefGoogle Scholar
Li, Q and Xiao, S (2022) Reconfigurable voltage controlled single-band and multiband bandstop filters with high selectivity and wide tuning range. IEEE Transactions on Circuits and Systems II: Express Briefs 69(6), 2702–2706.Google Scholar
Hickle, MD and Peroulis, D (2018) Tunable constant-bandwidth substrate- integrated bandstop filters. IEEE Transactions on Microwave Theory & Techniques 66(1), 157–169.CrossRefGoogle Scholar
Liu, B, Yang, T and Chi, PL (2022) An analysis and design method for wide range reconfigurable filter bank using parallel inductive switch network. IEEE Transactions on Circuits and Systems II: Express Briefs 69(8), 3381–3385.Google Scholar
Chen, JX, Zhang, YJ, Cai, J, Li, YL and Yang, YJ (2019) Overall study of frequency-agile mechanism of varactor-loaded λ/4 resonator for designing tunable filter with stable wide stopband. IEEE Transactions on Industrial Electronics 66(8), 6302–6310.CrossRefGoogle Scholar
Chen, RS, Wong, SW, Lin, JY, Yang, Y, Li, Y, Zhang, L, He, Y and Zhu, L (2021) Reconfigurable cavity bandpass filters using fluid dielectric. IEEE Transactions on Industrial Electronics 68(9), 8603–8614.CrossRefGoogle Scholar
Esmaeili, M and Bornemann, J (2017) Novel tunable bandstop resonators in SIW technology and their application to a dual-bandstop filter with one tunable stopband. IEEE Microwave and Wireless Components Letters 27(1), 40–42.CrossRefGoogle Scholar
Yang, T and Rebeiz, GM (2017) Bandpass-to-bandstop reconfigurable tunable filters with frequency and bandwidth controls. IEEE Transactions on Microwave Theory & Techniques 65(7), 2288–2297.CrossRefGoogle Scholar
Li, Q and Yang, T (2021) Compact UWB half-mode SIW bandpass filter with fully reconfigurable single and dual notched bands. IEEE Transactions on Microwave Theory & Techniques 69(1), 65–74.CrossRefGoogle Scholar
Ni, J and Iglesias, PM (2022) Compact bandwidth tunable IF filters for reconfigurable converters. International Journal of Microwave and Wireless Technologies 14(3), 313–324.CrossRefGoogle Scholar
Fan, M, Song, K, Zhu, Y and Fan, Y (2019) Compact bandpass-to-bandstop reconfigurable filter with wide tuning range. IEEE Microwave and Wireless Components Letters 29(3), 198–200.CrossRefGoogle Scholar
Brown, JA, Barth, S, Smyth, BP and Iyer, AK (2020) Compact mechanically tunable microstrip bandstop filter with constant absolute bandwidth using an embedded metamaterial-based EBG. IEEE Transactions on Microwave Theory & Techniques 68(10), 4369–4380.CrossRefGoogle Scholar
Hou, R, Chen, J, Zhao, YT, Su, T, Li, L and Xu, KD (2022) Varactor-graphene-based bandpass filter with independently tunable characteristics of frequency and amplitude. IEEE Transactions on Components, Packaging and Manufacturing Technology 12(8), 1375–1385.CrossRefGoogle Scholar
Zhang, XY, Chan, CH, Xue, Q and Hu, BJ (2012) RF tunable bandstop filters with constant bandwidth based on a doublet configuration. IEEE Transactions on Industrial Electronics 59(2), 1257–1265.CrossRefGoogle Scholar
Ko, CH, Tran, A and Rebeiz, GM (2015) Tunable 500-1200-MHz dual-band and wide bandwidth notch filters using RF transformers. IEEE Transactions on Microwave Theory & Techniques 63(6), 1854–1862.CrossRefGoogle Scholar
Li, Q, Chen, X, Chi, PL and Yang, T (2020) Tunable bandstop filter using distributed coupling microstrip resonators with capacitive terminal. IEEE Microwave and Wireless Components Letters 30(1), 35–38.CrossRefGoogle Scholar
Ebrahimi, A, Baum, T, Scott, J and Ghorbani, K (2018) Continuously tunable dual-mode bandstop filter. IEEE Microwave and Wireless Components Letters 28(5), 419–421.CrossRefGoogle Scholar
Psychogiou, D and Gómez-García, R (2017) Reflectionless adaptive RF filters: Bandpass, bandstop, and cascade designs. IEEE Transactions on Microwave Theory & Techniques 65(11), 4593–4605.CrossRefGoogle Scholar
Adhikari, P, Yang, W, Wu, YC and Peroulis, D (2018) A PCB technology-based 22-42-GHz quasi-absorptive bandstop filter. IEEE Microwave and Wireless Components Letters 28(11), 975–977.CrossRefGoogle Scholar
Fan, M, Song, K, Yang, L and Gómez-García, R (2021) Frequency-tunable constant-absolute-bandwidth single-/dual-passband filters and diplexers with all-port-reflectionless behavior. IEEE Transactions on Microwave Theory & Techniques 69(2), 1365–1377.CrossRefGoogle Scholar
Zhao, K, Gómez-García, R and Psychogiou, D (2022) Tunable quasi-reflectionless bandpass filters using substrate integrated coaxial resonators. IEEE Transactions on Circuits and Systems II: Express Briefs 69(2), 379–383.Google Scholar
Hickle, MD and Peroulis, D (2018) Theory and design of frequency-tunable absorptive bandstop filters. IEEE Transactions on Circuits and Systems I: Regular Papers 65(6), 1862–1874.CrossRefGoogle Scholar