Research Article

Analysis and Design of Gap-Coupled Annular Ring Microstrip Antenna

Figure 5

(a) Variation of return loss with frequency for different feed location at S  =  0.095 cm. (b) Variation of return loss with frequency for different feed location at S  =  0.11 cm.
792123.fig.005a
(a)
792123.fig.005b
(b)