A Novel Low Axis Ratio Double-Circularly Polarized Microstrip Antenna

Figure 6

Comparison between simulation and measurement. (a) S-parameters, (b) AR, (c) gain, and (d) S12. At 4.5 GHz, dextrally polarized radiation is normalized in the (e) XOZ and YOZ (f) planes and left-handed polarized radiation is normalized in the (g) XOZ and (h) YOZ planes.

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(e)

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(h)