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- W3028200082 abstract "Abstract This study presents, for the first time, a novel design of ultra‐wideband (UWB), circularly polarized and highly directive log‐spiral THz photoconductive antenna. The proposed antenna is simulated in High Frequency Structure Simulator using gold as the antenna electrode material which is backed by a quartz substrate (ε r = 3.78, tan δ = 0.0001) and hemispherical silicon‐based lens with a diameter of 140 μm. A comprehensive detailed parametric study of the antenna design parameters is performed in the frequency range of 1 to 6 THz for the optimal design of the developed antenna structure. The optimal antenna structure with integrated lens has UWB characteristics with −10 dB impedance bandwidth of 5 THz and 3 dB axial ratio bandwidth of around 4 THz. The observed directivity and half‐power beam width of the presented design varies in the range 5 to 12 dBi and 34° to 62°, respectively, for the frequency range of 1 to 4 THz. The wideband, high directivity as well as high‐efficiency (>50%) characteristics of the proposed design make it a favorable choice for the THz sensing and imaging applications." @default.
- W3028200082 created "2020-05-29" @default.
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- W3028200082 date "2020-05-24" @default.
- W3028200082 modified "2023-09-30" @default.
- W3028200082 title "Full wave numerical analysis of wideband and high directive log spiral <scp>THz</scp> photoconductive antenna" @default.
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- W3028200082 doi "https://doi.org/10.1002/jnm.2761" @default.
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