高选择性陷波超宽带天线设计 |
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摘 要: |
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收稿时间: | 2014-08-02 |
Design of highly selective band-notched ultra-wideband antenna |
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Authors: | LI Tong CAO Xiangyu GAO Jun ZHAI Huiqing LIANG Changhong |
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Affiliation: | (1. Information and Navigation College, Air Force Engineering Univ. of CPLA, Xi'an 710077, China;
2. Science and Technology on Antenna and Microwave Lab., Xidian Univ., Xi'an 710071, China) |
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Abstract: | The resonant properties of the interdigital capacitance loading loop resonator (IDCLLR) and its dual counterpart complimentary interdigital capacitance loading loop resonator (CIDCLLR) are studied. Due to the high capacitance/inductance of the IDCLLR/CIDCLLR, the resonators can generate lower resonant frequencies and narrower resonant bandwidths than many other structures. A compact ultra-wideband (UWB) antenna with quadruple sharp band-notching characteristics is presented by utilizing IDCLLRs and CIDCLLRs. Measured results show that the proposed antenna has a wide bandwidth from 3 to 11GHz(VSWR<2), with four sharp notched bands centered on 3.5, 5.2, 5.8 and 7.5GHz, respectively, avoiding the elimination of many useful frequencies. Moreover, the presence of IDCLLRs and CIDCLLRs scarcely affects the performance of the UWB antenna at its operating frequencies. |
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Keywords: | compact antenna ultra-wideband (UWB) sharp band-notched interdigital capacitance loading loop resonator(IDCLLR) |
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