Small-Size Wide-Band Low-Profile “Pixel Antenna”: Comparison of Theoretical and Experimental Results in L Band

Mohamad Rammal (1) , Mohamad Majed (2) , Eric Arnaud (3) , Joël Andrieu (4) , Bernard Jecko (5)

1 XLIM-RFEI - RF-ELITE : RF-Electronique Imprimée pour les Télécommunications et l'Energie
2 XLIM - XLIM
3 XLIM-OSA - OSA
4 XLIM-SRF - Systèmes RF
5 C2S2

This paper presents a small (≈λ/2 × λ/2) low-profile (λ/10) planar antenna built to work on a very large frequency band (≥40%) for applications in Telecom, Radar, IoT, etc. is antenna is called a "Pixel Antenna" because it was first used as a pixel in an agile beam radiating surface. In this paper, the pixel antenna is used alone to design multiband or wide-band antennas keeping the same radiation pattern and polarization throughout the band. e working principle used to design the Pixel Antenna is deduced from the well-known EBG (electromagnetic band gap) antenna in its low-profile version which already has a bandwidth close to ≈20%. e aim of this present work is to double this bandwidth by simultaneously feeding two modes of the original EBG material. e theoretical and experimental results are compared for an L band application, exhibiting bandwidth from 1 GHz to 1.52 GHz (41%). In addition, good radiation patterns of pixel antenna stay constant over the entire useful band without any degradation of the antenna performance. is proposed antenna design can be used to obtain wide bandwidth for any chosen frequency band (S band, X band, C band, etc.) using frequency scaling.

Domaines: Electromagnétisme

Mohamad Rammal, Mohamad Majed, Eric Arnaud, Joël Andrieu, Bernard Jecko. Small-Size Wide-Band Low-Profile “Pixel Antenna”: Comparison of Theoretical and Experimental Results in L Band. International Journal of Antennas and Propagation, 2019, 2019, pp.3653270. ⟨10.1155/2019/3653270⟩. ⟨hal-02366726⟩