Increasing isolation between co-located antennas using a spatial notch

E.J.G. Janssen; D. Milosevic; M.H.A.J. Herben; P.G.M. Baltus

doi:10.1109/LAWP.2011.2158510

Increasing isolation between co-located antennas using a spatial notch

E.J.G. Janssen, D. Milosevic, M.H.A.J. Herben, P.G.M. Baltus

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Abstract

This letter presents an antenna configuration to achieve a coupling reduction between colocated antennas. Application of an adaptive spatial notch enables this functionality. Analytical results are obtained, which show good resemblance to simulated and measured results, performed on a prototype manufactured to operate around 2.5 GHz. Coupling reduction of 50 dB has been measured. The antenna impedance is also influenced because of this configuration and shows an S11 better than - 15 dB at the frequency of interest. In addition, the radiation pattern of both antennas is influenced. This can be seen as an advantage or a disadvantage, depending on the application.

Original language	English
Pages (from-to)	552-555
Number of pages	4
Journal	IEEE Antennas and Wireless Propagation Letters
Volume	10
DOIs	https://doi.org/10.1109/LAWP.2011.2158510
Publication status	Published - 2011

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AB - This letter presents an antenna configuration to achieve a coupling reduction between colocated antennas. Application of an adaptive spatial notch enables this functionality. Analytical results are obtained, which show good resemblance to simulated and measured results, performed on a prototype manufactured to operate around 2.5 GHz. Coupling reduction of 50 dB has been measured. The antenna impedance is also influenced because of this configuration and shows an S11 better than - 15 dB at the frequency of interest. In addition, the radiation pattern of both antennas is influenced. This can be seen as an advantage or a disadvantage, depending on the application.

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Increasing isolation between co-located antennas using a spatial notch

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