CM suppression enhancement for balanced band-notched UWB closed-aperture antenna

W.-X. Chen; C.-H. Lee; C.-I.G. Hsu

CM suppression enhancement for balanced band-notched UWB closed-aperture antenna

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Author(s): W.-X. Chen¹ ; C.-H. Lee¹ ; C.-I.G. Hsu²
- Affiliations: 1: Graduate Institute of Communications Engineering , National Changhua University of Education , Changhua , Taiwan ;
  2: Department of Electrical Engineering , National Yunlin University of Science and Technology , Douliou, Yunlin , Taiwan
Source: Volume 53, Issue 19, 14 September 2017, p. 1291 – 1292
DOI: 10.1049/el.2017.2271 , Print ISSN 0013-5194, Online ISSN 1350-911X

Received 20/06/2017, Published 21/08/2017

A strategy for enhancing the common-mode (CM) suppression of a band-notched UWB closed-aperture antenna is proposed. The antenna circuit consists of a differentially coplanar-waveguide-fed hexagonal-aperture antenna and a pair of wave-trapping slotline resonators for producing a 5.5 GHz notch band. The enhancement of the CM suppression was achieved by setting the dimension of the aperture along the longitudinal direction (i.e. the direction parallel to the feedlines) small enough, so that the first resonant mode of the CM half-circuit of the aperture antenna can be pushed beyond the differential-mode (DM) UWB passband. A fabricated balanced band-notched UWB antenna was measured to have a 10 dB DM passband of 3–11.2 GHz with a notch band of 5.1–6.1 GHz. Good measured CM suppression was observed with a maximum return loss of 2.9 dB in the DM UWB passband.

References

1. 1)
  - 9. IEEE Std. 145-2013: ‘IEEE Standard for Definitions of Terms for Antennas’, 2014.
2. 2)
  - 8. Lee, C.-H., Chen, H.-H., Shih, W.-T., et al: ‘Balanced wideband filtering planar inverted-F antenna design’, Antennas Wirel. Propag. Lett., 2017, 16, pp. 716–719 (doi: 10.1109/LAWP.2016.2600751).
3. 3)
  - 1. Lin, Y.-C., Hung, K.-J.: ‘Compact ultrawideband rectangular aperture antenna and band-notched designs’, Trans. Antennas Propag., 2006, 54, (11), pp. 3075–3081 (doi: 10.1109/TAP.2006.883982).
4. 4)
  - 4. Zhao, F., Zhang, W.: ‘Design and study of UWB differentially driven antenna band-notch characteristics’. 3rd Asia-Pacific Conf. Antennas and Propagation, Harbin, China, July 2014, pp. 407–409, doi: 10.1109/APCAP.2014.6992510.
5. 5)
  - 6. Tang, Z., Lian, R., Yin, Y.: ‘Differential-fed UWB patch antenna with triple band-notched characteristics’, Electron. Lett., 2015, 51, (22), pp. 1728–1730 (doi: 10.1049/el.2015.1843).
6. 6)
  - 5. Li, W.-A., Tu, Z.-H., Chu, Q.-X., Wu, X. -H.: ‘Differential stepped-slot UWB antenna with common-mode suppression and dual sharp-selectivity notched bands’, IEEE Antennas Wirel. Propag. Lett., 2015, 15, pp. 1120–1123 (doi: 10.1109/LAWP.2015.2496159).
7. 7)
  - 2. Sze, J.-Y., Hsu, C.-I G., Shiu, J.-Y.: ‘Small CPW-fed ultra-wideband rectangular aperture antenna with band-notched characteristics’, Antennas Wirel. Propag. Lett., 2008, 7, pp. 512–515, doi: 10.1109/LAWP.2008.2006007.
8. 8)
  - 3. Ruchandani, K., Kumar, M.: ‘A novel CPW fed octagonal aperture UWB antenna with 5 GHz/6 GHz band rejection by H shaped slot’. 2015 Int. Conf. Computer, Communication and Control (IC4), Indore, India, September 2015, pp. 1–4, doi: 10.1109/IC4.2015.7375602.
9. 9)
  - 6. Tu, Z.-H., Li, W.-A., Chu, Q.-X.: ‘Single-layer differential CPW-fed notch-band tapered-slot UWB antenna’, IEEE Antennas Wirel. Propag. Lett., 2014, 13, pp. 1296–1299 (doi: 10.1109/LAWP.2014.2332355).

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CM suppression enhancement for balanced band-notched UWB closed-aperture antenna

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