Figure 5. Smith chart for MPA antenna

From

Quad-Band Dual-Layer Microstrip Antenna Design for Mobile Handset

Gada Mahmood Faisal, Kaydar Majeed Quboa, Dia Mohamad Ali

American Journal of Electrical and Electronic Engineering. 2014, 2(2), 51-56 doi:10.12691/ajeee-2-2-4