Design of continuous long slot leaky-wave antenna for millimeter wave application |
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Authors: | Lü Shanwei Zhang Yan Liu Juan Zhang Jiangling |
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Institution: | 1. School of Electronics and Information Engineering, Beijing Univ. of Aeronautics and Astronautics, Beijing 100083, P. R. China 2. Institute No. 25 of the Second Academy, Chinese Aerospace Science and Industry Corporation, Beijing 100854, P. R. China |
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Abstract: | A simple and efficient design scheme of the continuous long slot leaky-wave antenna is developed. The key steps involved in the scheme are summarized. First, the cut-off frequencies of slot waveguides with different slot offsets are obtained by 3D finite-difference time-domain (FDTD) method. Second, the attenuation function ra is estimated by the aperture distribution, and the attenuation function rs is determined by the slot radiation. Finally, the attenuation function ra is combined with the attenuation function rs by the coefficient K. And an example in Ka band is presented. Moreover, the return loss of the E-plane Tee-junction (ET) and the radiation pattern of leaky-wave antenna are simulated. The scheme is verified by comparing with the experimental result. |
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Keywords: | waveguide leaky-wave antenna continuous long slot finite-difference time-domain |
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