Long Slot Array Fed by a Nonuniform Corporate Feed Network in PPW Technology

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 -28dB 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.
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Submitted on : Wednesday, September 11, 2019 - 4:46:59 PM
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Thomas Potelon, Mauro Ettorre, Ronan Sauleau. Long Slot Array Fed by a Nonuniform Corporate Feed Network in PPW Technology. IEEE Transactions on Antennas and Propagation, Institute of Electrical and Electronics Engineers, 2019, 67 (8), pp.5436-5445. ⟨10.1109/TAP.2019.2917581⟩. ⟨hal-02277953⟩

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