Independently Tunable Triband Patch Antenna with Band-Notched Characteristics for X-Band Applications

Figure 3

Current distributions on the top and bottom layers of the proposed antenna at resonant and notch frequencies: (a) 9.5 GHz, (b) 10.5 GHz, (c) 11 GHz, and (d) 11.3 GHz.

(a)

(b)

(c)

(d)