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Design of differential-mode bandpass filter with common-mode suppression using ring dielectric resonator

  • Jugul Kishor (a1), Binod K. Kanaujia (a2) (a3), Santanu Dwari (a4) and Ashwani Kumar (a5)

Synthesis of differential-mode bandpass filter (BPF) with good common-mode suppression has been described and demonstrated on the basis of ring dielectric resonator (RDR) for high-performance communication system. A RDR with two pairs of feeding lines has been used to excite TE01δ-mode. This unique combination of feeding lines and the ring resonator creates a differential passband. Meanwhile, TM01δ-mode of the DR can also be excited to achieve common-mode rejection in the stopband. Transmission zeros are created in the lower and upper stopband to further improve the selectivity of the proposed BPF. A second-order differential BPF is designed, fabricated and its performance is measured to validate the concept. There is good agreement between simulated and measured results.

Corresponding author
Corresponding author: B.K. Kanaujia Email:
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[1] Shi, J.; Xue, Q.: Dual-band and wide-stopband single-band balanced bandpass filters with high selectivity and common mode suppression. IEEE Trans. Microw. Theory Tech., 58 (8) (2010), 20042212.
[2] Wu, C.-H.; Wang, C.-H.; Chen, C.H.: Balanced coupled-resonator bandpass filters using multisection resonators for common-mode suppression and stopband extension. IEEE Trans. Microw. Theory Tech., 55 (8) (2007), 17561763.
[3] Shi, J.; Xue, Q.: Balanced bandpass filter using center-loaded half-wavelength resonators. IEEE Trans. Microw. Theory Tech., 58 (4) (2010), 970977.
[4] Wu, C.-H.; Wang, C.-H.; Chen, C.H.: Novel balanced coupled line bandpass filters with common-mode noise suppression. IEEE Trans. Microw. Theory Tech., 55 (2) (2007), 287295.
[5] Tamura, M.; Ishizaki, T.; Hoft, M.: Design and analysis of vertical split ring resonator and its application to unbalanced-balanced filter. IEEE Trans. Microw. Theory Tech., 58 (1) (2010), 157164.
[6] Liu, W.T.; Tsai, C.H.; Han, T.W.; Wu, T.L.: An embedded common-mode suppression filter for GHz differential signals using periodic defected ground plane. IEEE Microw. Wireless Compon. Lett., 18 (4) (2008), 248250.
[7] Wu, S.-M.; Kuo, C.-T.; Chen, C.-H.: Very compact full differential bandpass filter with transformer integrated using integrated passive device technology. Progr. Electromagn. Res., 113 (2011), 251267.
[8] Shi, J.; Chen, J.-X.; Xue, Q.: A novel differential bandpass filter based on double-sided parallel-strip line dual-mode resonator. Microw. Opt. Technol. Lett., 50 (7) (2008), 17331735.
[9] Wu, C.-H., Wang, C.-H.; Chen, C.H.: Stopband-extended balanced bandpass filter using coupled stepped-impedance resonators. IEEE Microw. Wireless Compon. Lett., 17 (7) (2007), 507509.
[10] Chen, J.-X.; Shao, C.; Lu, Q.-Y.: Compact LTCC balanced bandpass filter using distributed-element resonator. Electron. Lett., 49 (5) (2013), 354356.
[11] Chen, M.-Y.; Hong, W.-H.; Ho, M.-H.: Balanced BPF design of substrate-integrated waveguide cavity using hybrid microstrip/slot feed for CM suppression. Electron. Lett., 50 (21) (2014), 15331534.
[12] Chen, J.-X.; Zhan, Y.; Qin, W.; Bao, Z.-H.; Xue, Q.: Novel narrow-band balanced bandpass filter using rectangular dielectric resonator. IEEE Microw. Wireless Compon. Lett., 25 (5) (2015), 289291.
[13] Zhan, Y.; Li, J.; Qin, W.; Chen, J.-X.: “Low-loss differential bandpass filter using TE01δ-mode dielectric resonators. Electron. Lett., 51 (13) (2015), 10011003.
[14]Dielectric Resonator, JiaxingGled Electronics Co. Ltd. Catalogue.
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International Journal of Microwave and Wireless Technologies
  • ISSN: 1759-0787
  • EISSN: 1759-0795
  • URL: /core/journals/international-journal-of-microwave-and-wireless-technologies
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