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A low-profile end-fire conformal surface wave antenna with capacitive feed structure

  • Legen Dai*
  • , Yongjun Xie
  • , Huai Wang
  • *Corresponding author for this work
  • Beihang University
  • China Electronics Technology Group Corporation

Research output: Contribution to journalArticlepeer-review

Abstract

A high end-fire gain, low-profile surface wave antenna with capacitive feed structure is presented in this paper. The proposed dielectric-metal surface wave antenna is composed of a dielectric slab that is mounted on a metal carrier and a low-profile feed structure. The feed structure is composed of a monopole radiation pin that is loaded with a circular metal plate and a grounding pin. The profile height of the antenna is only one-tenth of the operating wavelength. With a good end-fire performance and low profile, the antenna is very suitable to be conformally mounted on the surface of flight vehicles. The proposed antenna was designed and manufactured at the center frequency of 6 GHz. Measured results demonstrated that the proposed antenna had a bandwidth of 7.33%, ranging from 5.89 to 6.33 GHz, and the antenna reached a high gain of 9.76 dBi with a length of 122.96 mm (2.45 λ) in the end-fire direction.

Original languageEnglish
Article number7054
Pages (from-to)1-13
Number of pages13
JournalSensors
Volume20
Issue number24
DOIs
StatePublished - 2 Dec 2020

Keywords

  • Capacitive feed structure
  • Conformal antenna
  • High end-fire gain
  • Low-profile surface wave antenna

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