A circularly polarized switched-beam patch antenna array with butler matrix is designed and experimentally demonstrated in this letter. With suitable rotation technique, circular polarized radiation can be improved for beam steering. Also, this technique enhances the axial-ratio (AR) bandwidth within its scanning angle. Measured results showed this array has an impedance and AR bandwidth over a frequency range of 5.75-6.2 GHz when the main beam of array is scanned to different directions. Good agreement is observed between simulation and measurement.
机构:
European Space Agcy, Antenna & Sub MillimetreWave Sect, NL-2200 AG Noordwijk, NetherlandsLab Anal & Architecture Syst LAAS CNRS, F-31400 Toulouse, France
机构:
Inst Telecomunicacoes, IST, P-1049001 Lisbon, Portugal
Inst Super Ciencias Trabalho & Empresa, Dept Ciencias & Tecnol Informacao, P-1649026 Lisbon, PortugalInst Telecomunicacoes, IST, P-1049001 Lisbon, Portugal
Costa, Jorge R.
Lima, Eduardo B.
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Inst Telecomunicacoes, IST, P-1049001 Lisbon, PortugalInst Telecomunicacoes, IST, P-1049001 Lisbon, Portugal
Lima, Eduardo B.
Fernandes, Carlos A.
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Inst Telecomunicacoes, IST, P-1049001 Lisbon, PortugalInst Telecomunicacoes, IST, P-1049001 Lisbon, Portugal
机构:
European Space Agcy, Antenna & Sub MillimetreWave Sect, NL-2200 AG Noordwijk, NetherlandsLab Anal & Architecture Syst LAAS CNRS, F-31400 Toulouse, France
机构:
Inst Telecomunicacoes, IST, P-1049001 Lisbon, Portugal
Inst Super Ciencias Trabalho & Empresa, Dept Ciencias & Tecnol Informacao, P-1649026 Lisbon, PortugalInst Telecomunicacoes, IST, P-1049001 Lisbon, Portugal
Costa, Jorge R.
Lima, Eduardo B.
论文数: 0引用数: 0
h-index: 0
机构:
Inst Telecomunicacoes, IST, P-1049001 Lisbon, PortugalInst Telecomunicacoes, IST, P-1049001 Lisbon, Portugal
Lima, Eduardo B.
Fernandes, Carlos A.
论文数: 0引用数: 0
h-index: 0
机构:
Inst Telecomunicacoes, IST, P-1049001 Lisbon, PortugalInst Telecomunicacoes, IST, P-1049001 Lisbon, Portugal