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Dual polarised microstrip patch antenna with high port isolation

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3 Author(s)
Zaman, A.U. ; Chalmers Univ. of Technol., Goteborg ; Manholm, L. ; Derneryd, A.

A probe fed stacked microstrip patch antenna for operation in dual polarisation mode is proposed. A slot loaded lower patch is presented to improve isolation between the two polarisation ports. Simulations and measurements show two linear polarisations with an isolation of more than 30 dB within the band 2.5-2.7 GHz. A return loss of -10 dB is achieved within the above-mentioned bandwidth for the proposed antenna. The radiation pattern for the antenna is similar to that of a conventional microstrip antenna and the measured cross-polar level is 16.5 dB below the peak co-polar level within the band 2.5-2.7 GHz

Published in:

Electronics Letters  (Volume:43 ,  Issue: 10 )