▎ 摘　　要

NOVELTY - Antenna comprises first grounding metal plate arranged on a lower surface of a lower medium substrate (3). Second grounding metal plate is arranged on a lower surface of an upper medium substrate (4). An upper surface of the lower medium substrate is etched with a polygonal radiation patch. Three rectangular opening resonant ring radiators and four L-shaped resonators are etched on an upper surface of the upper medium substrate. A center of the lower medium substrate is processed with a rectangular opening. A center of the first grounding metal plate is processed with the rectangular opening with same size. A tuning gap between two adjacent rectangular opening resonant ring radiators forms a resonant pair. Each resonant pair generates a coupling. The L-shaped resonator is located at four corners of the upper medium substrate. USE - Double-layer patch antenna for multi-parameter detection. ADVANTAGE - The size of the double-layer patch antenna is small, which is good for integrating in the device with compact structure compact antenna bandwidth and good applicability. The gap of the rectangular opening resonant ring radiator is respectively coated with reducing oxidation graphene PVA material, when the temperature and humidity changes, the parameter of the material will change, so as to cause the resonance frequency deviation, to realize the detection of the temperature or humidity. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of the double-layer patch antenna for multi-parameter detection. 3Lower medium substrate 4Upper medium substrate