Compact polarisation reconfigurable printed monopole antenna at 2.4 GHz

Compact polarisation reconfigurable printed monopole antenna at 2.4 GHz

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A single feed printed monopole antenna with switchable polarisation with reduced antenna size is proposed. The radiating element is in the form of two monopole rectangular patches fed by a single microstrip line. To reduce the size of the patches and to provide dual polarised operation, each patch is perturbed by two L-shaped slots. Such a structure can produce two orthogonal linear polarisations by switching only one pin diode, which is the most interesting feature of the design. To further reduce the size of the antenna a meandered stub attached to the transmission line is employed. The antenna is fabricated on the low-cost FR4 substrate with an overall size of 26 × 19 mm2.


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