Abstract:
This communication proposes a compact, low-profile patch antenna with vertical
polarization.A pair of shorted patches are excited in-phase to achieve the vertical
polarisation. The principle is to excite two back-to-back arranged shorted patches to
generate symmetrical electric-field (E-field) distributions normal to the ground plane.
Based on this study, we found that the spacing in between the two patches have little
influence on the radiation characteristics, which provides another flexibility in the
design. In addition,the shape of the patch and the corresponding field distribution .
To improve the impedance bandwidth,gain and reduces the power losses.
In this work, the beam steering controlled by the transmitter’s frequency without
use of any phase shifter . The beam steering is a simple function of the frequency.which
can alter the phase or signal delay electronically, thus steering the beam of radio waves
to a different direction. showing that the proposed antenna is suitable for potential
surface-mount wireless applications.
