Exponential Antipodal Vivaldi Antenna with Exponential Dielectric Lens

Publication Type:
Journal Article
Citation:
IEEE Antennas and Wireless Propagation Letters, 2017, 16 pp. 1792 - 1795
Issue Date:
2017-01-01
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© 2002-2011 IEEE. The expansion of wireless technologies poses various requirements such as stable radiation characteristics in a wide frequency range. This letter presents an exponential antipodal Vivaldi antenna with a dielectric lens replacing part of the substrate in antenna aperture, with dimensions of 76 × 130 mm2. The shape of the lens also follows exponential structure in its inner (where lens meets the antenna substrate) and outer edges. Using a dielectric with higher constant in the proposed antenna provides 1 dB improvement in antenna gain and 24% of 3-dB beamwidth reduction.
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