Slot antenna
A slot antenna is disclosed. The slot antenna structure includes a dielectric substrate, a grounding plate and a resonator. The grounding plate is disposed over a first side of the dielectric substrate and defines a slot. The feeding strip is disposed over a second side of the dielectric substrate and opposite to the grounding plate. The resonator is coupled to the grounding plate and is disposed horizontally within the slot.
1. A slot antenna comprising:
a dielectric substrate;
a grounding plate disposed over a first side of the dielectric substrate and defining a slot;
a feeding strip disposed over a second side of the dielectric substrate and opposite to the grounding plate; and
a first resonator coupled to the grounding plate and disposed horizontally within the slot, the first resonator comprising:
a first meandered conductive line electrically coupled to the grounding plate; and
a first conductive patch electrically connected to the first meandered conductive line in series and electrically coupled to the grounding plate.
2. The slot antenna of claim 1 , wherein the first resonator is capacitively or inductively coupled to the grounding plate.
3. The slot antenna of claim 1 , wherein the grounding plate and the first resonator are an integral structure.
4. The slot antenna of claim 1 , further comprising:
a second resonator coupled to the grounding plate and electrically connected in parallel with the first resonator.
5. The slot antenna of claim 4 , wherein the second resonator comprises:
a second inductive element electrically coupled to the grounding plate; and
a second capacitive element electrically connected to the second inductive element in series and electrically coupled to the grounding plate.
6. The slot antenna of claim 5 , wherein the second inductive element is a second meandered conductive line, and wherein the second capacitive element is a second conductive patch.
7. The slot antenna of claim 4 , wherein the second resonator is capacitively or inductively coupled to the grounding plate.
8. The slot antenna of claim 6 , wherein the second conductive patch is overlapped with the grounding plate in a top view of the slot antenna.
9. The slot antenna of claim 4 , wherein the second resonator is overlapped with the slot in a top view of the slot antenna.
10. The slot antenna of claim 4 , further comprising:
a conductive via penetrating through the dielectric substrate and electrically connected to the second resonator and the grounding plate;
wherein the second resonator is disposed over the second side of the dielectric substrate.
11. The slot antenna of claim 10 , wherein the first resonator and the second resonator are overlapped in a top view of the slot antenna.
12. The slot antenna of claim 4 , wherein the second resonator is disposed horizontally within the slot.
13. The slot antenna of claim 12 , wherein the grounding plate, the first resonator and the second resonator are an integral structure.
14. A slot antenna comprising:
a dielectric substrate;
a grounding plate disposed over a first side of the dielectric substrate and defining a slot;
a feeding strip disposed over a second side of the dielectric substrate and opposite to the grounding plate; and
a resonator coupled to the grounding plate and disposed over the second side of the dielectric substrate, the resonator overlapped with the slot, and the resonator comprising:
a meandered conductive line electrically coupled to the grounding plate; and
a conductive patch electrically connected to the meandered conductive line in series and electrically coupled to the grounding plate.
15. The slot antenna of claim 14 , wherein the resonator is capacitively or inductively coupled to the grounding plate.
16. The slot antenna of claim 14 , further comprising:
a conductive via penetrating through the dielectric substrate and electrically connected to the resonator and the grounding plate.