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Anisotropic Complementary Metantenna for Low Sidelobe Radiation and Low In-Band Co-Polarized Scattering Using Characteristic Mode Analysis.
- Source :
-
IEEE Transactions on Antennas & Propagation . Nov2022, Vol. 70 Issue 11, p10177-10186. 10p. - Publication Year :
- 2022
-
Abstract
- An anisotropic complementary metantenna (ACMA) is proposed for the integration of low sidelobe radiation and low in-band co-polarized (IBCP) scattering with the aid of characteristic mode analysis (CMA). With the guidance of CMA, the proposed ACMA evolving from a conventional metantenna (MTA) not only generates a coding phase distribution for low scattering but also restores broadside radiation modes like a uniform MTA. With the IBCP conditions set to $x$ -polarization and the band around 9 GHz, the ACMA is constructed by mixing two types of double-layer anisotropic complementary metasurface (MTS) unit cells. Two desired characteristic modes of ACMA are simultaneously excited by a substrate integrated waveguide (SIW) cavity through dual bow-tie slots. Both the simulation and experiments demonstrate that the proposed ACMA achieves both the $x$ -polarized broadside radiation with sidelobe level below −18.9 dB and IBCP scattering levels below −17.8 dB over the frequency range from 8.87 to 9.78 GHz. [ABSTRACT FROM AUTHOR]
- Subjects :
- *RADAR cross sections
*RADIATION
*UNIT cell
*PHASE coding
Subjects
Details
- Language :
- English
- ISSN :
- 0018926X
- Volume :
- 70
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Antennas & Propagation
- Publication Type :
- Academic Journal
- Accession number :
- 160621434
- Full Text :
- https://doi.org/10.1109/TAP.2022.3191138