Millimeter-wave broadband substrate integrated hybrid dielectric resonator antenna

1. 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.

2. The millimeter-wave broadband substrate integrated hybrid dielectric resonator antenna according to claim 1 , wherein the second dielectric substrate and the third dielectric substrate each are square, and a plane size of the second dielectric substrate and a plane size of the third dielectric substrate each are 12 millimeters (mm)×12 mm, and a height of the second dielectric substrate is equal to a height of the third dielectric substrate.

3. The millimeter-wave broadband substrate integrated hybrid dielectric resonator antenna according to claim 1 , wherein the feed slot is H-shaped, a middle slot of the feed slot is orthogonal to the microstrip line, a length of the middle slot of the feed slot is 1.7 mm, and lengths of two side slots of the feed slot each are 0.4 mm.

4. The millimeter-wave broadband substrate integrated hybrid dielectric resonator antenna according to claim 1 , wherein a shape of the metal ring patch is a square ring, an outer square size of the square ring is 1 mm×1 mm, an inner square size of the square ring is 0.7 mm×0.7 mm, and a plane size of the first dielectric substrate is larger than a plane size of the metal ring patch.

5. The millimeter-wave broadband substrate integrated hybrid dielectric resonator antenna according to claim 1 , wherein operating frequencies of the first resonant mode, the second resonant mode, the third resonant mode and the fourth resonant mode are different from one another and sequentially increased in that order.

6. The millimeter-wave broadband substrate integrated hybrid dielectric resonator antenna according to claim 1 , wherein the first dielectric substrate is square, a plane size of the first dielectric substrate is smaller than each of a plane size of the second dielectric substrate and a plane size of the third dielectric substrate, and a height of the first dielectric substrate is greater than each of a height of the second dielectric substrate and a height of the third dielectric substrate.

7. The millimeter-wave broadband substrate integrated hybrid dielectric resonator antenna according to claim 1 , wherein a height of the first adhesive sheet and a height of the second adhesive sheet are the same, and a plane size of the first adhesive sheet is smaller than a plane size of the second adhesive sheet.

8. The millimeter-wave broadband substrate integrated hybrid dielectric resonator antenna according to claim 1 , wherein the antenna is formed through integrated processing by printed circuit board (PCB) technology.