Antenna and electronic device

Patent metadata

Field	Value
Publication number	US-12424753-B2
Application number	US-202218021914-A
Country	US
Kind code	B2
Filing date	Apr 29, 2022
Priority date	Apr 29, 2022
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

An antenna and an electronic device are provided and belong to communication technology. The antenna includes an antenna substrate and a flexible circuit board. The antenna substrate includes: a first dielectric substrate, a first conductive layer on the first dielectric substrate and including at least one first feed line and at least one second feed line; a second conductive layer on a side of the first dielectric substrate away from the first conductive layer and including at least one first opening. The flexible circuit board includes: a second dielectric substrate and a third dielectric substrate opposite to each other; a third conductive layer between the second dielectric substrate and the third dielectric substrate; a first feed structure on a side of the second dielectric substrate away from the third conductive layer; each second feed port of the first feed structure being electrically connected to a corresponding first feed line.

First claim

What is claimed is:

1. An antenna, comprising an antenna substrate and a flexible circuit board; wherein
the antenna substrate comprises:
a first dielectric substrate;
a first conductive layer on the first dielectric substrate and comprising at least one first feed line and at least one second feed line; and
a second conductive layer on a side of the first dielectric substrate away from the first conductive layer and comprising at least one first opening;
wherein an orthographic projection of one of the at least one first opening on the first dielectric substrate intersects with an orthographic projection of one of the at least one first feed line on the first dielectric substrate and an orthographic projection of one of the at least one second feed line on the first dielectric substrate;
the orthographic projection of the first feed line on the first dielectric substrate and the orthographic projection of the second feed line on the first dielectric substrate extends into the orthographic projection of the first opening on the first dielectric substrate; and
the first feed line and the second feed line have different feed directions; and
the flexible circuit board comprises:
a second dielectric substrate and a third dielectric substrate opposite to each other;
a third conductive layer between the second dielectric substrate and the third dielectric substrate;
a first feed structure on a side of the second dielectric substrate away from the third conductive layer; wherein the first feed structure comprises at least one second feed port, and each second feed port of the first feed structure is electrically connected to a corresponding first feed line;
a second feed structure on a side of the third dielectric substrate away from the third conductive layer; wherein the second feed structure comprises at least one fourth feed port, and each fourth feed port of the second feed structure is electrically connected to a corresponding second feed line;
a fourth conductive layer on a side of the second dielectric substrate away from the third conductive layer and comprising the first feed structure, at least one first connection pad, at least one second connection pad, and at least one third connection pad; wherein the second feed port of the first feed structure is electrically connected to a corresponding first connection pad, and each first feed line is bound to a corresponding first connection pad; the third conductive layer is electrically connected to the second connection pad through a first connection via penetrating through the second dielectric substrate; and
a fifth conductive layer on a side of the third dielectric substrate away from the third conductive layer and comprising the second feed structure; wherein the fourth feed port of the second feed structure is electrically connected to a corresponding second connection pad through a corresponding second connection via penetrating through the second dielectric substrate and the third dielectric substrate, and each second feed line is bound to a corresponding second connection pad.

2. The antenna of claim 1 , wherein the antenna substrate comprises at least one radiation unit, each of which comprises one first opening, and one first feed line and one second feed line, orthographic projections of which on the first dielectric substrate intersect with the orthographic projection of the first opening on the first dielectric substrate, respectively;
the radiation unit further comprises a first isolation component in the first conductive layer, and between the first feed line and the second feed line and bound to the third connection pad; and
in the radiation unit, an orthographic projection of the first isolation component on the first dielectric substrate intersects with the orthographic projection of the first opening on the first dielectric substrate and extends into the orthographic projection of the first opening on the first dielectric substrate.

3. The antenna of claim 2 , further comprising at least one side wiring is disposed on a side of the first dielectric substrate; wherein each first isolation component is electrically connected to the second conductive layer through a corresponding side wiring.

4. The antenna of claim 1 , wherein the at least one first opening comprises a plurality of first openings arranged side by side along a first direction; the second conductive layer comprises a first side edge and a second side edge opposite to each other in a second direction; and the flexible circuit board is closer to the first side edge than the second side edge; and
the second conductive layer further comprises second openings penetrating through the first side edge, at least one second opening is disposed between any two adjacent first openings, and an extending direction of each second opening intersects with the first direction.

5. The antenna of claim 4 , wherein each second opening extends in the second direction and has a length in a range from 0.2λc to 0.25 λc, where λc is a wavelength at a center frequency of an operating frequency band of the antenna.

6. The antenna of claim 4 , wherein the second conductive layer further comprises third openings penetrating through the second side edge, and at least one third opening is disposed between any two adjacent first openings, and an extending direction of each third opening intersects with the first direction; and each second opening and a corresponding third opening are in mirror symmetry with respect to a line connecting centers of the plurality of first openings as a symmetry axis.

7. The antenna of claim 1 , wherein the second conductive layer comprises a metal mesh structure.

8. The antenna of claim 7 , wherein the antenna substrate further comprises a plurality of first connection strips in a same layer as the second conductive layer; and edges of the metal mesh structure close to the flexible circuit board are shorted by the plurality of first connection strips.

9. The antenna of claim 1 , wherein each first opening comprises a polygon.

10. The antenna of claim 9 , wherein the polygon comprises a first side, a second side, a third side, a fourth side, a fifth side, a sixth side, a seventh side, and an eighth side connected in sequence;
an extending direction of the first side is the same as that of the fifth side, and is perpendicular to that of the third side; and
an orthographic projection of a corresponding first feed line on the first dielectric substrate intersects with an orthographic projection of the second side on the first dielectric substrate and an orthographic projection of a corresponding second feed line on the first dielectric substrate intersects with an orthographic projection of the eighth side on the first dielectric substrate.

11. An antenna, comprising an antenna substrate and a flexible circuit board; wherein
the antenna substrate comprises:
a first dielectric substrate;
a first conductive layer on the first dielectric substrate and comprising at least one first feed line and at least one second feed line; and
a second conductive layer on a side of the first dielectric substrate away from the first conductive layer and comprising at least one first opening;
wherein an orthographic projection of one of the at least one first opening on the first dielectric substrate intersects with an orthographic projection of one of the at least one first feed line on the first dielectric substrate and an orthographic projection of one of the at least one second feed line on the first dielectric substrate;
the orthographic projection of the first feed line on the first dielectric substrate and the orthographic projection of the second feed line on the fi

Assignees

• Beijing Boe Sensor Technology Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Chen Zhe
• Jin Yunnan
• Zhang Zhifeng
• Nan Guohui
• Feng Chunnan
• Bao Sihui
• Yang Shuo

Classifications

• H05K1/0298

  Multilayer circuits · CPC title

• H01Q21/24

  Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction {(circularly polarised patch antennas H01Q9/0428; circularly polarised horns H01Q13/0241; cross-polarised horns H01Q13/0258; polarisation converters H01Q15/242; cross-polarised rear feeds H01Q19/136; crossed polarisation dual antenna H01Q25/001)} · CPC title

• H01Q13/106

  Microstrip slot antennas (patch antenna elements H01Q9/0407) · CPC title

• H01Q21/08

  the units being spaced along or adjacent to a rectilinear path {(waveguide fed H01Q21/0037)} · CPC title

• H05K2201/0145

  Polyester, e.g. polyethylene terephthalate [PET], polyethylene naphthalate [PEN] · CPC title