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In this paper, a compact Stepped-impedance resonators (SIR) Omni-directional ceiling-mounted antenna for band-notched characteristic is designed and simulated. The proposed Omni-directional ceiling-mounted antenna has the capability to operate over the bandwidth 0.6–4.8GHz at return loss < −10 dB(for SWR<2). To avoid potential interferences, a notched band of 0. 87–1GHz for rejection of GSM900...
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