Antenna structure and television

Abstract

The embodiment of the utility model provides an antenna structure and a television, and the antenna structure comprises a dielectric substrate which comprises two through holes, and conductors are disposed in the two through holes respectively; the antenna radiator is arranged on the dielectric substrate, the antenna radiator is electrically connected with the conductor, the orthographic projection of the antenna radiator on the dielectric substrate is a first orthographic projection, and the length of the first orthographic projection along the first polarization direction is not equal to the length of the first orthographic projection along the second polarization direction; the first polarization direction and the second polarization direction intersect at the symmetric center of the first orthographic projection; the grounding metal piece is arranged on the side, away from the antenna radiator, of the dielectric substrate, the grounding metal piece is provided with an isolation area, and the through hole is located in the isolation area so that the conductor can be separated from the grounding metal piece. The antenna structure is a dual-polarized antenna and has metal resistance.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, in particular to an antenna structure and a television. Background Art

[0002] Currently, televisions are increasingly connected to more external devices, driven by their increasing demand for intelligence and aesthetics, and most of these connections are wireless. However, wireless connections often rely on antenna structures within the TV to radiate or receive electromagnetic waves to connect to external devices. The increasing number of external devices leads to an increase in the number of antenna structures within the TV, which are often located on the front bezel. This increased number of antenna structures also widens the front bezel.

[0003] Furthermore, the back panel of a television is generally made of metal or a metal-plated layer, but the existing antenna structure does not have the ability to resist metal, so the antenna structure needs to be spaced apart from the back panel, which will increase the thickness of the television.

[0004] Therefore, it is necessary to provide an antenna structure to solve the above problems. Utility Model Content

[0005] An embodiment of the present application provides an antenna structure and a television set. The antenna structure is a dual-polarized antenna and has metal resistance.

[0006] An embodiment of the present application provides an antenna structure, including:

[0007] The dielectric substrate comprises two through holes, wherein conductors are respectively disposed in the two through holes;

[0008] an antenna radiator, the antenna radiator being disposed on the dielectric substrate, the antenna radiator being electrically connected to the conductor, the orthographic projection of the antenna radiator on the dielectric substrate being a first orthographic projection, the length of the first orthographic projection along the first polarization direction being unequal to the length along the second polarization direction, and the first polarization direction and the second polarization direction intersecting at a symmetry center of the first orthographic projection;

[0009] A grounding metal member is provided on a side of the dielectric substrate away from the antenna radiator. The grounding metal member is provided with an isolation area. The through hole is located in the isolation area so that the conductor is spaced apart from the grounding metal member.

[0010] An embodiment of the present application also provides a television set comprising the above antenna structure.

[0011] An antenna structure and a television set provided in an embodiment of the present application include a dielectric substrate, an antenna radiator, and a grounded metal member, wherein the antenna radiator and the grounded metal member are respectively disposed on opposite sides of the dielectric substrate. The orthographic projection of the antenna radiator on the dielectric substrate is a first orthographic projection, wherein the length of the first orthographic projection along a first polarization direction is unequal to the length along a second polarization direction. The first polarization direction and the second polarization direction intersect at the symmetry center of the first orthographic projection, thereby forming a dual-polarized antenna. The grounded metal member is provided with an isolation region, and the through-hole is located within the isolation region, thereby enabling power to be fed to the antenna radiator from the back of the antenna radiator through a conductor within the through-hole. The grounded metal member enhances the antenna structure's resistance to metal, enabling the antenna structure to be attached to other metal members from the back. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0013] Figure 1 This is a schematic diagram of the first structure of the antenna structure provided in an embodiment of the present application.

[0014] Figure 2 This is a schematic diagram of the second structure of the antenna structure provided in an embodiment of the present application.

[0015] Figure 3 This is a schematic diagram of the third structure of the antenna structure provided in an embodiment of the present application.

[0016] Figure 4 This is a schematic diagram of the first structure of the antenna radiator provided in an embodiment of the present application.

[0017] Figure 5 This is a schematic diagram of the second structure of the antenna radiator provided in an embodiment of the present application.

[0018] Figure 6 This is a schematic diagram of the third structure of the antenna radiator provided in an embodiment of the present application.

[0019] Figure 7 The standing wave ratio diagram of the antenna structure provided in the embodiment of the present application

[0020] Figure 8 S parameter diagram of the antenna structure provided in the embodiment of the present application

[0021] Figure 9 This is a schematic diagram of the fourth structure of the antenna radiator provided in an embodiment of the present application.

[0022] Figure 10 This is a fifth structural schematic diagram of the antenna radiator provided in an embodiment of the present application.

[0023] Figure 11 This is a sixth structural schematic diagram of the antenna radiator provided in an embodiment of the present application. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0025] The present invention provides an antenna structure and a television set in accordance with an embodiment of the present invention. The antenna structure is a dual-polarized antenna and has metal resistance. The following description will be made with reference to the accompanying drawings.

[0026] See also Figure 1 as well as Figure 2 , Figure 1 This is a schematic diagram of the first structure of the antenna structure provided in the embodiment of the present application. Figure 2 This is a schematic diagram of the second structure of the antenna structure provided in an embodiment of the present application.

[0027] An embodiment of the present application provides an antenna structure 100 , which includes a dielectric substrate 10 , an antenna radiator 20 , and a grounded metal member 30 . The antenna radiator 20 and the grounded metal member 30 are respectively disposed on two sides of the dielectric substrate 10 .

[0028] See also Figure 3 , Figure 3 This is a schematic diagram of the third structure of the antenna structure provided in an embodiment of the present application.

[0029] The dielectric substrate 10 is provided with two through-holes 11, each of which contains a conductor. It is understood that the through-holes 11 may be vias, also known as metalized holes, formed by providing a conductor on the wall of the through-hole 11. The dielectric substrate 10 may be made of a common low-loss material, such as an FR4 board or a microwave dielectric board. The dielectric substrate 10 may be 1 mm thick and have a dielectric constant of 4.6.

[0030] The antenna radiator 20 is disposed on the dielectric substrate 10 and electrically connected to the conductor within the through-hole 11. This allows power to be fed to the antenna radiator 20 from the back side of the antenna radiator 20 (the side of the dielectric substrate 10 facing away from the antenna radiator 20) through the conductor within the through-hole 11. The orthographic projection of the antenna radiator 20 on the dielectric substrate 10 is a first orthographic projection. The length of the first orthographic projection along the first polarization direction A is not equal to the length along the second polarization direction B. The first polarization direction A and the second polarization direction B intersect at the symmetry center of the first orthographic projection. Optionally, the first polarization direction A is perpendicular to the second polarization direction B. Polarization refers to the direction in which the charge in the molecules or atoms of the antenna radiator 20 deviates.

[0031] Since the antenna radiator 20 has different lengths in different directions and is fed by the conductors in the two through holes 11 , two mutually orthogonal excitation modes can be formed, and resonate in different frequency bands respectively.

[0032] The grounding metal member 30 is disposed on a side of the dielectric substrate 10 away from the antenna radiator 20. The grounding metal member 30 and the antenna radiator 20 can both be made of copper. The grounding metal member 30 is provided with an isolation region 31, which is a hollowed-out area of the grounding metal member 30 and is not grounded. The through hole 11 can be located within the isolation region 31. Specifically, the grounding metal member 30 can be disposed around the through hole 11 to form the isolation region 31, and the through hole 11 is located within the isolation region 31, so that the conductor is separated from the grounding metal member 30. By providing the grounding metal member 30, the metal resistance of the antenna structure 100 is improved, so that the antenna radiator 20 can be embedded in the front frame of the TV or affixed to the back panel of the TV.

[0033] As can be seen from the foregoing, the antenna structure 100 in the embodiment of the present application has the characteristics of common aperture, low profile, dual frequency, high isolation, and anti-interference. Due to these characteristics, when the antenna structure 100 is installed inside a television, it can be embedded in the front frame of the television or attached to the back panel of the television, and can serve as both a transmitting antenna, a receiving antenna, and a coupling antenna.

[0034] The orthographic projection of the antenna radiator 20 on the dielectric substrate 10 can have various shapes, and the sides of the antenna radiator 20 can be straight or curved. The antenna radiator 20 can be a plate-shaped homogeneous structure. For example, the orthographic projection of the antenna radiator 20 on the dielectric substrate 10 can be a square, rectangle, diamond, ellipse, or other irregular shape.

[0035] In some cases, see Figure 1 as well as Figure 4 , Figure 4This is a schematic diagram of a first structural embodiment of an antenna radiator provided in an embodiment of the present application. Taking the orthographic projection of the antenna radiator 20 on the dielectric substrate 10 as an example, i.e., the first orthographic projection, as a square, it can be understood that the square has a first diagonal 211 and a second diagonal 212, wherein the first diagonal 211 intersects the second diagonal 212. The first diagonal 211 is parallel to the first polarization direction A, and the second diagonal 212 is parallel to the second polarization direction B. The two opposing right angles along the first diagonal 211 are chamfered so that the length of the antenna radiator 20 along the first polarization direction A is shorter than the length of the antenna radiator 20 along the second polarization direction B. In this case, when the antenna radiator 20 is fed through the two through holes 11, the antenna radiator 20 can form half-wave resonant structures in the two diagonal directions (the first polarization direction A and the second polarization direction B), each having a different center frequency and an orthogonal characteristic relationship.

[0036] In other cases, see Figure 5 , Figure 5 This is a schematic diagram of the second structure of the antenna radiator provided in an embodiment of the present application. For example, if the orthographic projection of the antenna radiator 20 on the dielectric substrate 10, i.e., the first orthographic projection, is a rhombus, the rhombus has a third diagonal 251 and a fourth diagonal 252, the third diagonal 251 is parallel to the first polarization direction A, the fourth diagonal 252 is parallel to the second polarization direction B, and the length of the third diagonal 251 is less than the length of the fourth diagonal 252. In this case, when the antenna radiator 20 is fed through the two through holes 11, the antenna radiator 20 can form a half-wave resonant structure in the two diagonal directions (the first polarization direction A and the second polarization direction B), respectively having different center frequencies, and having orthogonal characteristics to each other.

[0037] In other cases, see Figure 6 , Figure 6 This is a schematic diagram of a third structure of an antenna radiator provided in an embodiment of the present application. The orthographic projection, or first orthographic projection, of the antenna radiator 20 on the dielectric substrate 10 is an ellipse. The ellipse further has a major axis 241 and a minor axis 242. The minor axis 242 is parallel to the first polarization direction A, and the major axis 241 is parallel to the second polarization direction B. When the antenna radiator 20 is fed, the resonance of the antenna radiator 20 in the first polarization direction A is centered at 5.2 GHz, and the resonance in the second polarization direction B is centered at 5.8 GHz.

[0038] In the above embodiment, the first orthographic projection is a square as an example, please continue to refer to Figure 1 as well as Figure 4The antenna radiator 20 is provided with a slot 213 extending along the first diagonal 211, i.e., the first polarization direction A. The feature of slotting the antenna can also be referred to as slot loading. In the embodiment of the present application, slotting the antenna radiator 20 increases the equivalent antenna length of the antenna radiator 20 along the second diagonal 212 and the second polarization direction B, thereby further facilitating the formation of a half-wave resonant structure on the antenna radiator 20 in the two diagonal directions.

[0039] See also Figure 7 , Figure 7 This is a standing wave ratio diagram of the antenna structure provided in an embodiment of the present application. Taking the first orthographic projection as a square as an example, when the standing wave ratio of the antenna radiator 20 is less than or equal to 2, the two bandwidths formed by the antenna radiator are 5.17GHz to 5.25GHz and 5.70GHz to 5.85GHz respectively. It can be seen that by chamfering the two right angles of the antenna radiator 20 along the first polarization direction A and slitting the antenna radiator 20 along the second polarization direction B, the two center frequencies of the antenna radiator 20 can be changed, so that the resonance of the antenna radiator 20 in the first polarization direction A is 5.2GHz as the center frequency, and the resonance in the second polarization direction B is 5.8GHz as the center frequency. Please refer to Figure 8 , Figure 8 The S-parameter diagram of the antenna structure provided in the embodiment of the present application shows that the isolation between the antennas corresponding to the two center frequencies formed on the antenna radiator 20 can reach 30 dB.

[0040] Further, please refer to Section 4. The number of slots 213 can be one or more. The slots 213 are primarily used to increase the equivalent antenna length of the antenna radiator 20. When there are two slots 213, the slots 213 include a first slot 2131 and a second slot 2132, which are symmetrically arranged with respect to the first diagonal 211. By providing multiple slots 213, the number of variables can be increased without reducing the strength of the antenna radiator 20, making it easier to adjust the resonant frequency of the antenna radiator 20 in the second polarization direction B.

[0041] It is worth noting that the antenna radiator 20 is square in shape. Given the same dielectric substrate 10, the projected area of the antenna radiator 20 on the dielectric substrate 10 is minimized. Providing a slit 213 in the antenna radiator 20 further reduces the projected area of the antenna radiator 20 on the dielectric substrate 10, thereby meeting the need for structural miniaturization. Furthermore, when the antenna radiator 20 is square in shape, the compatibility between the two polarization modes, chamfered corners and slotted corners, is maximized.

[0042] Taking the square shape of the antenna radiator 20 as an example, since the thickness of the dielectric substrate 10 is strongly correlated with the dielectric constant of the dielectric substrate 10 and the bandwidth of the antenna radiator 20, to achieve better RF performance, the dielectric constant of the dielectric substrate 10 can be 4.6, and the thickness of the dielectric substrate 10 can be 1 mm. When the orthographic projection of the antenna radiator 20 on the dielectric substrate 10 is a square, the side length of the square is 25 mm.

[0043] In some cases, see Figure 9 as well as Figure 10 , Figure 9 This is a schematic diagram of the fourth structure of the antenna radiator provided in an embodiment of the present application. Figure 10 This is a schematic diagram of the fifth structure of the antenna radiator provided in an embodiment of the present application. For example, the orthographic projection of the antenna radiator 20 on the dielectric substrate 10 is an irregular shape. The projection of the antenna radiator 20 on the dielectric substrate 10 includes a main body 221, a first protrusion 222, and a second protrusion 223. The first protrusion 222 and the second protrusion 223 are respectively arranged on opposite sides of the main body 221 along the first polarization direction A, so that the length of the antenna radiator 20 along the first polarization direction A is different from the length of the antenna radiator 20 along the second polarization direction B. The length of the main body 221 along the first polarization direction A is equal to the length of the main body 221 along the second polarization direction B. For example, the main body 221 can be square. In this case, when the antenna radiator 20 is fed through two through holes 11, the antenna radiator 20 can form a half-wave resonant structure in the first polarization direction A and the second polarization direction B, respectively having different center frequencies and orthogonal characteristics.

[0044] The first protrusion 222 and the second protrusion 223 are arranged in an axisymmetric manner in terms of position and size. The shape of the first protrusion 222 or the second protrusion 223 can be rectangular, square, semicircular, semi-elliptical, triangular, trapezoidal or other shapes.

[0045] The protrusion directions of the first protrusion 222 and the second protrusion 223 are both toward the main body 221 or away from the main body 221. When the protrusion directions of the first protrusion 222 and the second protrusion 223 along the first polarization direction A are both away from the main body 221, the length of the antenna radiator 20 along the first polarization direction A is greater than the length of the antenna radiator 20 along the second polarization direction B. Figure 9 When the protrusion directions of the first protrusion 222 and the second protrusion 223 along the first polarization direction A are both toward the main body 221, the length of the antenna radiator 20 along the first polarization direction A is less than the length of the antenna radiator 20 along the second polarization direction B. Figure 10In both of the above cases, the antenna radiator 20 can form a half-wave resonant structure in the first polarization direction A and the second polarization direction B, respectively having different center frequencies.

[0046] In some cases, see Figure 11 , Figure 11 This is a schematic diagram of a sixth structural embodiment of an antenna radiator provided in an embodiment of the present application. The projection of the antenna radiator 20 on the dielectric substrate 10 is a rectangle. The rectangle further has a first side 231 along the first polarization direction A and a second side 232 along the second polarization direction B. The first side 231 is longer than the second side 232. When the antenna radiator 20 is fed, the resonance of the antenna radiator 20 in the first polarization direction A has a center frequency of 5.2 GHz, and the resonance in the second polarization direction B has a center frequency of 5.8 GHz.

[0047] In some scenarios, the speakers are located on the lower side of the TV's back panel, in the non-display area, creating a hidden design. The advantage of this design is its integrated structure. However, to maintain the thickness of the TV, the speakers must be smaller and thinner, which limits the sound quality. Furthermore, the sound output doesn't meet user expectations, failing to achieve the stereoscopic effect of a home theater.

[0048] In order to achieve a cinema-like effect and a beautiful and convenient layout, the audio system of a TV often adopts a wireless connection, that is, the antenna structure in the audio wireless repeater is used to wirelessly connect to external devices. Since the antenna structure of the current audio wireless repeater is generally set on the back panel of the TV, the antenna structure has no metal resistance and needs to be separated from the metal back panel of the TV by a certain distance. This is contrary to the overall lightness and thinness of the TV, and can only make performance concessions. At the same time, the antenna structure in the existing technology has deficiencies in the system design of the TV, and the subsequent practical application effect is poor; there is no intentional control on bandwidth control, which determines that it can only be used as a transmitting antenna. If used as a receiving antenna, it is easily interfered with by the adjacent WiFi antenna.

[0049] The antenna structure 100 in the present application utilizes the low profile and anti-metal properties of the microstrip line to adapt the antenna to the environmental requirements of wireless audio in televisions; at the same time, two backfeed excitations are performed on the antenna radiator 20 to form two mutually orthogonal excitation modes, which resonate at different frequencies respectively. A slot 213 is also provided on the antenna radiator 20 to adjust the resonance point to solve the problems existing in the above-mentioned prior art.

[0050] An embodiment of the present application further provides a television set, which includes the antenna structure 100 in the above embodiment.

[0051] In the above embodiment, the television set includes a back panel and a front frame, which enclose a storage space. The antenna structure 100 is located within the storage space and is fixed to the back panel or the front frame. The back panel and / or the front frame are made of metal. Due to the metal resistance of the antenna structure 100, when the antenna structure 100 is located in the storage space, it can be embedded in the front frame of the television set or affixed to the back panel of the television set, thereby serving as both a transmitting antenna, a receiving antenna, and a coupling antenna.

[0052] An antenna structure 100 and a television set provided in an embodiment of the present application include a dielectric substrate 10, an antenna radiator 20, and a grounded metal member 30. The antenna radiator 20 and the grounded metal member 30 are disposed on either side of the dielectric substrate 10. The orthographic projection of the antenna radiator 20 on the dielectric substrate 10 is a first orthographic projection. The length of the first orthographic projection along a first polarization direction A is unequal to the length along a second polarization direction B. The first polarization direction A and the second polarization direction B intersect at the symmetry center of the first orthographic projection, forming a dual-polarized antenna. The grounded metal member 30 is provided with an isolation region 31. The through hole 11 is located within the isolation region 31. This allows power to be fed from the back of the antenna radiator 20 through the conductor within the through hole 11 to the antenna radiator 20. The grounded metal member 30 enhances the antenna structure 100's resistance to metal defects, enabling the antenna structure 100 to be attached to other metal members from the back.

[0053] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0054] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more features.

[0055] The above describes in detail the antenna structure and television provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is intended only to facilitate understanding of the present application. Furthermore, those skilled in the art will appreciate that variations in the specific implementation methods and scope of application may occur based on the concepts of the present application. In summary, the contents of this specification should not be construed as limiting the present application.

Claims

1. An antenna structure, characterized in that: include: The dielectric substrate comprises two through holes, wherein conductors are respectively disposed in the two through holes; an antenna radiator, the antenna radiator being disposed on the dielectric substrate, the antenna radiator being electrically connected to the conductor, the orthographic projection of the antenna radiator on the dielectric substrate being a first orthographic projection, the length of the first orthographic projection along the first polarization direction being unequal to the length along the second polarization direction, and the first polarization direction and the second polarization direction intersecting at a symmetry center of the first orthographic projection; A grounding metal member is provided on a side of the dielectric substrate away from the antenna radiator. The grounding metal member is provided with an isolation area. The through hole is located in the isolation area so that the conductor is spaced apart from the grounding metal member.

2. The antenna structure according to claim 1, wherein: The first orthographic projection is a square having a first diagonal and a second diagonal, the first diagonal being parallel to the first polarization direction, the second diagonal being parallel to the second polarization direction, and two opposite right angles along the first diagonal being chamfered.

3. The antenna structure according to claim 1, wherein: The first orthographic projection is a rhombus, the rhombus having a third diagonal and a fourth diagonal, the third diagonal is parallel to the first polarization direction, the fourth diagonal is parallel to the second polarization direction, and the length of the third diagonal is less than the length of the fourth diagonal.

4. The antenna structure according to claim 1, wherein: The first orthographic projection is an ellipse having a major axis and a minor axis, the minor axis is parallel to the first polarization direction, and the major axis is parallel to the second polarization direction.

5. The antenna structure according to any one of claims 2 to 4, characterized in that: The antenna radiator is provided with a slot, and the slot extends along the first polarization direction.

6. The antenna structure according to claim 5, characterized in that: The gaps include a first gap and a second gap, and the first gap and the second gap are symmetrically arranged with respect to the second diagonal line.

7. The antenna structure according to claim 1, wherein: The first orthographic projection includes a main body, a first protrusion and a second protrusion. The length of the main body along the first polarization direction is equal to the length of the main body along the second polarization direction. The first protrusion and the second protrusion are respectively arranged on opposite sides of the main body along the first polarization direction.

8. The antenna structure according to claim 7, characterized in that: The protrusion directions of the first protrusion and the second protrusion are both toward the main body or away from the main body.

9. A television set, characterized in that: The antenna structure comprises the antenna structure according to any one of claims 1 to 8.

10. The television set according to claim 9, wherein It also includes a back plate and a front frame. The back plate and the front frame are arranged to form a receiving space. The antenna structure is arranged in the receiving space. The antenna structure is fixed to the back plate or the front frame.

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