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In this paper, a 4 ×4-element waveguide-aperture array antenna is designed for applications in the 60 GHz band. To simplify the design process of the feed network, instead of using a conventional waveguide power divider, an efficient approach is proposed where the antenna is fed with two layers of back cavities to distribute power uniformly among the array aperture. The connection between cavities is obtained by a set of coupling slots. A standard WR-15 rectangular waveguide is designed to excite the antenna at the input port over the operating frequency. Furthermore, to improve the antenna gain characteristics and reduce size, array aperture is loaded with a dielectric plate. The most significant advantage of using this design is its efficient radiation patterns and the ability to decrease complexity of feeding network. Simulated results demonstrate that the antenna gain is larger than 25 dB over the frequency range from 58 to 64 GHz. This high gain antenna combined with the simplicity of feeding network is greatly advantageous to millimeter wave applications.
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Waveguide-fed Antipodal Vivaldi Antenna using an Antipodal Finline Transition
In this paper, a new waveguide-fed Antipodal Vivaldi Antenna (AVA) for mm-wave imaging applications is presented. A waveguide-to-broadside coupled Antipodal finline transition is designed to couple the dominant mode of a WR-12 waveguide into the AVA. The transition provides a wideband and low insertion loss in the entire E-band. A dielectric lens is added in front of the AVA to increase the directivity in theendfire direction of the antenna. The performance of the designed antenna is evaluated in the E-band in terms of its return loss,gain, and radiation pattern.
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- Award ID(s):
- 1653671
- PAR ID:
- 10088840
- Date Published:
- Journal Name:
- 2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting
- Page Range / eLocation ID:
- 715 to 716
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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- Free Publicly Accessible Full Text
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Accepted Manuscript1.0
- Conference Paper:
- https://doi.org/10.1109/APUSNCURSINRSM.2018.8608326
