A Wide-Bandwidth Monopolar Patch Antenna with Dual-Ring Couplers

Figure 5

𝐸-plane radiation patterns for the proposed antenna at (a) 5.64 GHz; (c) 6.4 GHz; and (e) 7.04 GHz. 𝐻-plane radiation patterns for the proposed antenna at (b) 5.64 GHz; (d) 6.4 GHz; and (f) 7.04 GHz.

(a)

(b)

(c)

(d)

(e)

(f)