Abstract
In this paper, small printed flower-shape triple notch ultra-wideband (UWB) monopole antenna with high band rejection is presented. Notch bands include WiMAX (IEEE802.16 3.30–3.80 GHz), WLAN IEEE802.11a/h/j/n (5.15–5.35, 5.25–5.35, 5.47–5.725, 5.725–5.825 GHz), and X-band downlink satellite system (7.1–7.9 GHz). By including inverted T-shape stub and etching two C-shaped slots on the radiating patch, triple band-notch function is obtained with measured high band rejection (VSWR = 14.52 at 3.58 GHz, VSWR = 15.88 at 5.69 GHz and VSWR = 6.95 at 7.61 GHz) and covers a UWB useable fractional bandwidth of 114.30% (2.74–10.57 GHz = 7.83 GHz). In short the antenna offers triple band-notch UWB systems as a compact multifunctional antenna to reduce the number of antennas installed in wireless devices for accessing multiple wireless networks with wide radiation pattern. The proposed antenna has a small size of about 0.25λ × 0.30λ at 4.2 GHz (first resonance frequency), which has a size reduction of 30% with respect to the earlier published antenna. Both the experimental and simulated results of the proposed antenna are presented, indicating that the antenna is a good candidate for various UWB applications.
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Acknowledgements
The Authors are thankful to Krishna Ranjan Jha, Advance Microwave Antenna Testing Laboratory (URL: delhi.gov.in/wps/wcm/connect/doit_gbpec/GBPEC/Home/List + of + Labs), G. B. Pant Engineering College, Delhi for providing Antenna Measurement Facility.
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Sharma, M., Awasthi, Y.K., Singh, H. et al. Compact UWB Antenna with High Rejection Triple Band-Notch Characteristics for Wireless Applications. Wireless Pers Commun 97, 4129–4143 (2017). https://doi.org/10.1007/s11277-017-4716-z
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DOI: https://doi.org/10.1007/s11277-017-4716-z