International Journal of Antennas and Propagation

Research Article

A Rectangular Planar Spiral Antenna for GIS Partial Discharge Detection

Figure 7

The designed antenna pattern.
985697.fig.007a
(a) f = 500 MHz
985697.fig.007b
(b) f = 1000 MHz
985697.fig.007c
(c) f = 1500 MHz
985697.fig.007d
(d) f = 2000 MHz
985697.fig.007e
(e) f = 2500 MHz
985697.fig.007f
(f) f = 3000 MHz