SONG Lizhong and FANG Qingyuan, “A Conformal Conical Archimedean Spiral Antenna for UWB Communications,” Chinese Journal of Electronics, vol. 24, no. 2, pp. 402-407, 2015, doi: 10.1049/cje.2015.04.030
Citation: SONG Lizhong and FANG Qingyuan, “A Conformal Conical Archimedean Spiral Antenna for UWB Communications,” Chinese Journal of Electronics, vol. 24, no. 2, pp. 402-407, 2015, doi: 10.1049/cje.2015.04.030

A Conformal Conical Archimedean Spiral Antenna for UWB Communications

doi: 10.1049/cje.2015.04.030
Funds:  This work is supported by the National Natural Science Foundation of China (No.61171181).
  • Publish Date: 2015-04-10
  • In this paper, a wide-band miniaturized Conformal conical Archimedean spiral (CCARS) antenna is proposed for Ultra wideband (UWB) communications. The CCARS antenna utilizes the vertical space instead of horizontal space significantly saving the antenna installation space. We investigate the transformation from Planar Archimedean spiral (PARS) antenna to the CCARS antenna and the antenna miniaturization technique. Due to the using of flexible dielectric substrate, the PARS antenna can be bent freely, which assures the transformation from the PARS antenna to the CCARS antenna. To realize antenna miniaturization, zigzag shape arms are applied to the PARS antenna. Moreover, the CCARS antenna has good unidirectional radiation property that avoids the using of traditional absorber-loaded back cavity. The measured results of antenna prototype indicate that the Voltage standing wave ratio (VSWR) is below 2 over the frequency range from 1.3GHz to 9GHz. The antenna gain is higher than 3.4dBi and the Front to back (F/B) ratio is better than 20dB from 2GHz to 7GHz. In addition, good radiation patterns and broad 3dB beam width are also available for the CCARS antenna.
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