Fig 1.
The current and magnetic field distribution of the balun.
(a) microstrip line, and (b) the position microstrip line coupling to slot line, (c) current distribution of the balun, and (d) the detail current and magnetic field distribution of the slot line.
Fig 2.
Geometry of the proposed antenna.
(top view, bottom view, front view).
Table 1.
Physical dimensions of the experimental antenna.
Fig 3.
Photograph of the fabricated antenna.
Fig 4.
Reflection coefficient of simulation and measurement.
Fig 5.
Antenna gain and cross-polarization of simulation and measurement.
Fig 6.
Simulated and measured radiation patterns of the fabricated antenna.
(a) 3 GHz; (b) 4.5 GHz; (c) 6 GHz; (d) 7 GHz.