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Probe radiation cancellation in wideband probe-fed microstrip arrays

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3 Author(s)
Levis, K. ; Commun. Res. Center, Ottawa, Ont., Canada ; Ittipiboon, A. ; Petosa, A.

The dual probe-fed patch technique, which is used to suppress unwanted probe radiation in wideband probe-fed microstrip patches, is extended for the case of a balanced two-patch sub-array. To demonstrate this technique, two S-band microstrip arrays were fabricated: with and without the balanced two-patch sub-arrays. The balanced array showed a reduction in the cross-polarisation peak level by nearly 10 dB. The unwanted radiation is effectively suppressed (20 dB cross-polarisation isolation) over a bandwidth of greater than 6.3%

Published in:

Electronics Letters  (Volume:36 ,  Issue: 7 )