Film-type microstrip patch antenna
The present invention relates to a film-type microstrip patch antenna. The present invention comprises: a base film; a microstrip transmission line part formed on one surface of the base film; a radiation patch part formed on the one surface of the base film so as to be electrically connected to the microstrip transmission line part; and a ground part formed on the other surface of the base film. The present invention can be implemented in a screen display area of a display device, be applied to a high-frequency band for 3G to 5G mobile communication, and prevent the moire phenomenon caused by components of an antenna, thereby improving the optical characteristics of the display device mounted with the antenna.
1. A film-type microstrip patch antenna that is formed in a screen region of a display device and can be applied to high-frequency bands for 3G to 5G mobile communication comprising:
a base film;
a microstrip transmission line unit formed on one surface of the base film;
a radiating patch unit formed on the one surface of the base film to be electrically connected to the microstrip transmission line unit; and
a ground unit formed on the other surface of the base film,
wherein the base film is a transparent optical film having a dielectric constant of 8 or less,
wherein a resistance of the microstrip transmission line unit is 70Ω or more and 230Ω or less,
wherein the radiating patch unit has a mesh structure,
wherein at least one of the microstrip transmission line unit and the ground unit has a single-layer structure or multi-layer structure or a mesh structure.
2. The film-type microstrip patch antenna of claim 1 , wherein a length of the microstrip transmission line unit satisfies Equation 1 below
L=λ/ 2 [Equation 1]
where L is the length of the microstrip transmission line unit, and λ, is a wavelength of a signal.
3. The film-type microstrip patch antenna of claim 1 , wherein a reflection coefficient S 11 is −10 dB or less.
4. The film-type microstrip patch antenna of claim 1 , wherein a transmission coefficient S 21 is −5 dB or more.
5. The film-type microstrip patch antenna of claim 1 , wherein at least one of the microstrip transmission line unit, the radiating patch unit, and the ground unit includes one or more of copper (Cu), aluminum (Al), silver (Ag), nickel (Ni), chromium (Cr), cobalt (Co), molybdenum (Mo), titanium (Ti), palladium (Pd), or alloys thereof.
6. The film-type microstrip patch antenna of claim 1 , wherein a plurality of unit antennas each including the base film, the microstrip transmission line unit, the radiating patch unit, and the ground unit are arranged.
7. A film-type microstrip patch antenna that is formed in a screen region of a display device and can be applied to high-frequency bands for 3G to 5G mobile communication comprising:
a base film;
a ground unit formed on the base film;
an Insulating layer formed on the ground unit;
a microstrip transmission line unit formed on the Insulating layer; and
a radiating patch unit formed on the Insulating layer to be electrically connected to the microstrip transmission line unit,
wherein the base film is a transparent optical film having a dielectric constant of 8 or less,
wherein a resistance of the microstrip transmission line unit is 70Ω or more and 230Ω or less,
wherein the radiating patch unit has a mesh structure,
wherein at least one of the microstrip transmission line unit and the ground unit has a single-layer structure or multi-layer structure or a mesh structure.
8. The film-type microstrip patch antenna of claim 7 , wherein a length of the microstrip transmission line unit satisfies Equation 1 below
L=λ/ 2 [Equation 1]
where L is the length of the microstrip transmission line unit, and λ is a wavelength of a signal.
9. The film-type microstrip patch antenna of claim 7 , wherein a reflection coefficient S 11 is −10 dB or less.
10. The film-type microstrip patch antenna of claim 7 , wherein a transmission coefficient S 21 is −5 dB or more.
11. The film-type microstrip patch antenna of claim 7 , wherein at least one of the microstrip transmission line unit, the radiating patch unit, and the ground unit includes one or more of copper (Cu), aluminum (Al), silver (Ag), nickel (Ni), chromium (Cr), cobalt (Co), molybdenum (Mo), titanium (Ti), palladium (Pd), or alloys thereof.
12. The film-type microstrip patch antenna of claim 7 , wherein a plurality of unit antennas each including the base film, the Insulating layer, the microstrip transmission line unit, the radiating patch unit, and the ground unit are arranged.