A balanced dual-band BPF with quasi-independently tunable center frequency and bandwidth
-
Chunliang Dai
,
Ying Han
Abstract
By introducing an open stub loaded resonator (OSLR) and a uniform impedance resonator (UIR) into balanced stepped-impedance microstrip-slotline transition structures, a balanced dual-band bandpass filter (BPF) with high selectivity and low insertion loss performance is presented in this paper. The balanced microstrip-slotline transition structures can achieve a wideband common-mode (CM) suppression. Meanwhile, the differential-mode (DM) passbands are independent from the CM responses, which greatly simplifies the design procedure. In addition, four varactors are loaded into OSLR and UIR to achieve the electrical reconfiguration. The proposed balanced dual-band BPF can realize quasi-independently tunable center frequencies and bandwidths. In order to verify the feasibility of the proposed design method, a prototype circuit of the proposed reconfigurable balanced dual-band BPF is simulated, fabricated and measured. A good agreement between the simulation and measurement results is observed.
-
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
-
Research funding: None declared.
-
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
References
[1] J. Shi and Q. Xue, “Dual-band and wide-stopband single-band balanced bandpass filters with high selectivity and common-mode suppression,” IEEE Trans. Microw. Theor. Tech., vol. 58, no. 8, pp. 2204–2212, 2010, https://doi.org/10.1109/tmtt.2010.2052959.Search in Google Scholar
[2] W. Feng, W. Che, and Q. Xue, “Balanced filters with wideband common mode suppression using dual-mode ring resonators,” IEEE Trans. Circ. Syst. I: Regul. Pap., vol. 62, no. 6, pp. 1499–1507, 2015, https://doi.org/10.1109/tcsi.2015.2423752.Search in Google Scholar
[3] Y.-J. Zhang, J. Cai, and J.-X. Chen, “Wideband varactor-tuned balanced bandpass filter with stable passband selectivity,” Int. J. RF Microw. Computer-Aided Eng., vol. 28, no. 9, 2018, https://doi.org/10.1002/mmce.21429.Search in Google Scholar
[4] H. W. Deng, Y. J. Zhao, Y. Fu, Y. He, and X. J. Zhao, “High selectivity and CM suppression microstrip balanced BPF and balanced-to-balanced diplexer,” J. Electromagn. Waves Appl., vol. 27, no. 8, pp. 1047–1058, 2013. https://doi.org/10.1080/09205071.2013.799445.Search in Google Scholar
[5] V. K. Killamsetty and B. Mukherjee, “Compact triple band bandpass filters design using mixed coupled resonators,” AEU - Int. J. Electron. Commun., vol. 107, pp. 49–56, 2019, https://doi.org/10.1016/j.aeue.2019.03.005.Search in Google Scholar
[6] V. K. Killamsetty and B. Mukherjee, “Compact dual bandpass filter for terrestrial radio and GSM applications,” Int. J. RF Microw. Computer-Aided Eng., vol. 27, no. 8, pp. 1–8, 2017, https://doi.org/10.1002/mmce.21131.Search in Google Scholar
[7] V. K. Killamsetty and B. Mukherjee, “Miniaturized highly selective wideband bandpass filter using dual mode resonators and inter digital capacitors,” IET Electron. Lett., vol. 53, no. 17, pp. 1209–1211, 2017, https://doi.org/10.1049/el.2017.2239.Search in Google Scholar
[8] L. Yang, W. Choi, K. Tam, and L. Zhu, “Balanced dual-band bandpass filter with multiple transmission zeros using doubly short-ended resonator coupled line,” IEEE Trans. Microw. Theor. Tech., vol. 63, no. 7, pp. 2225–2232, 2015, https://doi.org/10.1109/tmtt.2015.2431679.Search in Google Scholar
[9] N. Kumar and Y. K. Singh, “Tunable and switchable dual-band BPF with reconfigurable selectivity and bandwidth control,” in 2016 46th European Microwave Conference (EuMC), London, 2016, pp. 1059–1062.10.1109/EuMC.2016.7824529Search in Google Scholar
[10] Y. Lu, S. Chen, and P. Hsu, “A differential-mode wideband bandpass filter with enhanced common-mode suppression using slotline resonator,” IEEE Microw. Wireless Compon. Lett., vol. 22, no. 10, pp. 503–505, 2012, https://doi.org/10.1109/lmwc.2012.2218279.Search in Google Scholar
[11] W. Feng, M. Hong, and W. Che, “Dual-band balanced-to-unbalanced filtering power divider by coupled ring resonators,” Electron. Lett., vol. 52, no. 22, pp. 1862–1864, 2016.10.1049/el.2016.2380Search in Google Scholar
[12] W. Zhou, H. Tang, and J. Chen, “Novel microfluidically tunable differential dual-mode patch filter,” IEEE Microw. Wireless Compon. Lett., vol. 27, no. 5, pp. 461–463, 2017, https://doi.org/10.1109/lmwc.2017.2690874.Search in Google Scholar
[13] J.-X. Chen, M.-Z. Du, Y.-L. Li, Y.-J. Yang, and J. Shi, “Independently tunable/controllable differential dual-band bandpass filters using element-loaded stepped-impedance resonators,” IEEE Trans. Compon. Packag. Manuf. Technol., vol. 8, no. 1, pp. 113–120, 2018, https://doi.org/10.1109/tcpmt.2017.2761789.Search in Google Scholar
[14] L.-H. Zhou, Y.-L. Ma, J. Shi, J.-X. Chen, and W.-Q. Che, “Differential dual-band bandpass filter with tunable lower band using embedded DGS unit for common-mode suppression,” IEEE Trans. Microw. Theor. Tech., vol. 64, no. 12, pp. 4183–4191, 2016, https://doi.org/10.1109/tmtt.2016.2607176.Search in Google Scholar
[15] L. Xu, H. J. Yue, F. Wei, and X. W. Shi, “A balanced dual-band bandpass filter with a wide stopband and controllable differential-mode frequencies and fractional bandwidths,” Int. J. RF Microw. Computer-Aided Eng., vol. 30, no. 1, 2020, https://doi.org/10.1002/mmce.22013.Search in Google Scholar
© 2022 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Research Articles
- Study of the substrate surface treatment of flexible polypyrrole-silver composite films on EMI shielding effectiveness: theoretical and experimental investigation
- A low-cost photonic band gap (PBG) microstrip line resonator for dielectric characterization of liquids
- A comprehensive study about low-cost and limited bandwidth FMCW bio-radar: detailed analyses on vital signs measurements
- Circular shape MIMO antenna sensor for breast tumor detection
- Textile UWB antenna performance for healthcare monitoring system
- A compact double-inverted Ω-shaped dual-band patch antenna for WLAN/WiMAX applications
- Asymmetric CPW-fed hexagonal monopole antenna with Boomerang-shaped Fractals for ultra-wideband applications
- Crescent shaped slot loaded antenna sensor with tri-band notched for cancer detection
- Performance enhancement of a circularly polarized printed monopole for wireless system application
- Equal/unequal half mode substrate integrated waveguide filtering power dividers using an ultra-compact metamaterial unit-cell
- A balanced dual-band BPF with quasi-independently tunable center frequency and bandwidth
- Efficient 6.5 dBm 55 GHz CMOS VCO with simultaneous phase noise and tuning range optimization
Articles in the same Issue
- Frontmatter
- Research Articles
- Study of the substrate surface treatment of flexible polypyrrole-silver composite films on EMI shielding effectiveness: theoretical and experimental investigation
- A low-cost photonic band gap (PBG) microstrip line resonator for dielectric characterization of liquids
- A comprehensive study about low-cost and limited bandwidth FMCW bio-radar: detailed analyses on vital signs measurements
- Circular shape MIMO antenna sensor for breast tumor detection
- Textile UWB antenna performance for healthcare monitoring system
- A compact double-inverted Ω-shaped dual-band patch antenna for WLAN/WiMAX applications
- Asymmetric CPW-fed hexagonal monopole antenna with Boomerang-shaped Fractals for ultra-wideband applications
- Crescent shaped slot loaded antenna sensor with tri-band notched for cancer detection
- Performance enhancement of a circularly polarized printed monopole for wireless system application
- Equal/unequal half mode substrate integrated waveguide filtering power dividers using an ultra-compact metamaterial unit-cell
- A balanced dual-band BPF with quasi-independently tunable center frequency and bandwidth
- Efficient 6.5 dBm 55 GHz CMOS VCO with simultaneous phase noise and tuning range optimization
