Antenna measurements antenna radiation patterns Dielectric substrates distance measure equipment function DME Dual-function dual-function dual-band dual-polarization metamaterial-based patch antenna dual-polarization Frequency measurement Global Positioning System Global Positioning System function GPS metallic ground plane metamaterial antennas metamaterial-based antenna Metamaterials microstrip antennas multifrequency antennas Ondes ElectroMagnétiques Matériaux et Systèmes periodic sub-wavelength square metallic patches thin dielectric substrate ultra-thin metamaterial-based dual-function antenna