1. Long Slot Array Fed by a Nonuniform Corporate Feed Network in PPW Technology.
- Author
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Potelon, Thomas, Ettorre, Mauro, and Sauleau, Ronan
- Subjects
- *
POWER dividers , *ANTENNA arrays , *BROADBAND antennas , *SLOT antennas , *ANTENNA radiation patterns , *EXCITATION (Physiology) - Abstract
We present here a novel architecture of high-gain continuous transverse stub (CTS) antenna array operating at E-band (71–86 GHz) with reduced sidelobe level (SLL). The antenna consists of an array of 16 long slots excited by a nonuniform parallel-plate waveguide (PPW) corporate feed network. The nonuniform excitation is achieved by the design of asymmetrical power dividers in PPW technology, for which simple analytical models are provided. Full-wave simulations are validated by measurements of a prototype fabricated in aluminum. The SLL is lower than −28 dB in the E-plane. Such an SLL is 15 dB lower than classical parallel-fed CTS arrays. The overall antenna SLL remains below −18 dB over the 75–86 GHz band. Its mean radiation efficiency is 60%, and the maximum efficiency of 85% is reached at 86 GHz. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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