Antenna structure
An antenna structure according to an embodiment of the present invention includes a first antenna unit including a first radiator, a first transmission line connected to the first radiator, and a guide pattern disposed around the first transmission line and separated from the first transmission line, a second antenna unit at least partially covered by the guide pattern of the first antenna unit in a plan view, and a dielectric layer interposed between the first antenna unit and the second antenna unit. An antenna structure implementing low-frequency and high-frequency properties with high reliability is provided.
1. An antenna structure comprising:
a first antenna unit comprising a first radiator and a first transmission line connected to the first radiator;
a guide pattern separated from the first transmission line;
a second antenna unit entirely covered by the guide pattern in a plan view; and
a dielectric layer interposed between the first antenna unit and the second antenna unit,
wherein the guide pattern comprises a first guide pattern and a second guide pattern separated from each other with the first transmission line interposed therebetween,
wherein a plurality of the second antenna units are covered by the guide pattern in the plan view,
wherein each of the plurality of the second antenna units comprises a second radiator and a second transmission line connected to the second radiator.
2. The antenna structure of claim 1 , wherein a resonance frequency of each of the plurality of the second antenna units is greater than a resonance frequency of the first antenna unit.
3. The antenna structure of claim 1 , wherein an area of the second radiator included in each of the plurality of the second antenna units is smaller than an area of the first radiator.
4. The antenna structure of claim 1 , wherein the dielectric layer comprises a first dielectric layer and a second dielectric layer spaced apart from each other, and
the first antenna unit is disposed on the first dielectric layer, and the second antenna unit is disposed on the second dielectric layer.
5. The antenna structure of claim 1 , wherein the first antenna unit further comprises an intermediate pattern disposed between the first radiator and the first transmission line, and
a width of the intermediate pattern increases stepwise or gradually in a direction from the first transmission line to the first radiator.
6. The antenna structure of claim 1 , further comprising:
an antenna cable coupled to the first transmission line; and
a first antenna driving integrated circuit chip electrically connected to the first antenna unit through the antenna cable.
7. The antenna structure of claim 1 , further comprising:
a circuit board bonded on the second antenna unit; and
a second antenna driving integrated circuit chip electrically connected to the second antenna unit through the circuit board.
8. An antenna structure, comprising:
a first antenna unit comprising a first radiator and a first transmission line connected to the first radiator;
a guide pattern separated from the first transmission line;
a second antenna unit entirely covered by the guide pattern in a plan view;
a dielectric layer interposed between the first antenna unit and the second antenna unit; and
a third antenna unit,
wherein the guide pattern comprises a first guide pattern and a second guide pattern separated from each other with the first transmission line interposed therebetween,
wherein the second antenna unit is superimposed over the first guide pattern in the plan view, and the third antenna unit is superimposed over the second guide pattern in the plan view.
9. The antenna structure of claim 8 , wherein a resonance frequency of the third antenna unit is greater than a resonance frequency of the second antenna unit, and the resonance frequency of the second antenna unit is greater than a resonance frequency of the first antenna unit.
10. The antenna structure of claim 9 , wherein the third antenna unit comprises a third radiator and a third transmission line connected to the third radiator.
11. The antenna structure of claim 10 , wherein the third radiator is entirely covered by the second guide pattern in the plan view.
12. The antenna structure of claim 11 , wherein a plurality of the third antenna units are covered by the second guide pattern in the plan view.
13. The antenna structure of claim 9 , wherein the resonance frequency of the first antenna unit is 10 GHz or less, and the resonance frequencies of the second antenna unit and the third antenna unit is from 20 GHz to 40 GHz.