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The study of the Characteristic Modes (CMs) on a square conductive plane has been addressed to design a pattern reconfigurable antenna. More in detail, it is demonstrated that an efficient stimulation of suitable current modes distribution (Jn) by a proper placing of capacitive exciters over the square plate is able to provide a pattern reconfigurable capability. In particular, the positioning of...
A pattern control for portable devices at 2.45 GHz is proposed by exploiting phase-shifted characteristic modes (CMs). Among all available orthogonal CMs, the pattern control of a rectangular conductive plane has been obtained by a weighted linear superposition of only two current modes (J4 and J8). A proper position of two capacitive coupling exciters (CCEs), hosted above the rectangular conductive...
The effects of introducing a phase-shift in the characteristic modes (CMs) of a rectangular conductive plane have been investigated. More in detail, a careful characteristic modes analysis (CMA) has been carried out in the aforementioned conditions to verify the possibility of significantly altering the shape of the overall radiated pattern. Among all the CMs, only two radiating modes (Jn) have been...
A novel pattern reconfigurable antenna operating at 2.45 GHz is designed for portable devices by exploiting the characteristic modes analysis (CMA). In particular, a null-steering antenna is proposed by exploiting the current modes distribution (Jn) over a ground plane of the dimensions of a mobile terminal. To achieve this goal, two current modes (J4 and Js) are asymmetrically excited by introducing...
A novel pattern reconfigurable antenna operating at 2.45 GHz is designed by exploiting the characteristic modes analysis (CMA). More in detail, this compact antenna is capable to steer the pattern null within a beam of 64° centered at broadside direction (θ = 0°), with a depth nulls greater than 18 dB. The pattern reconfigurability is obtained by changing the phase of two capacitive exciters hosted...
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