Millimeter-wave broadband substrate integrated hybrid dielectric resonator antenna

A millimeter-wave broadband substrate integrated hybrid dielectric resonator antenna, comprising:

• a first dielectric substrate with high dielectric constant, a second dielectric substrate with low dielectric constant, and a third dielectric substrate with low dielectric constant sequentially stacked from top to bottom;
• wherein the first dielectric substrate and the second dielectric substrate are adhered by a first adhesive sheet, the second dielectric substrate and the third dielectric substrate are adhered by a second adhesive sheet, a middle of a top surface of the second dielectric substrate is printed with a metal ring patch, a top surface of the third dielectric substrate is formed with a metal ground plane, the metal ground plane is etched with a feed slot, and a bottom surface of the third dielectric substrate is disposed with a microstrip line;
• and
• wherein the first dielectric substrate and the second dielectric substrate cooperatively form a dielectric resonator configured to provide a first resonant mode and a fourth resonant mode, the feed slot serves as a slot resonator configured to provide a second resonant mode, and the metal ring patch serves as a metal ring patch resonator configured to provide a third resonant mode.