A high- and low-frequency dual-polarized thin-film TV antenna

Abstract

This invention provides a high- and low-frequency dual-polarized thin-film television antenna, belonging to the field of television antenna technology. It solves the technical problem in existing technologies where single-line output can only be achieved by adding a combiner board, leading to complex antenna structures. This high- and low-frequency dual-polarized thin-film television antenna includes four sets of slotted arrays, symmetrically distributed vertically and horizontally, with an opening on one side near the center of symmetry. It also includes four sets of matching feed lines, each connecting to the adjacent ends of two adjacent openings. Two diagonally positioned matching feed lines each have a feed point in their middle, with the angle between these two feed points and the center line of the two symmetrically distributed slotted arrays being 45 degrees. These two feed points are connected to the center line of the coaxial cable and the shielding line, respectively. This invention provides a high- and low-frequency dual-polarized thin-film television antenna with a simple structure.

Description

Technical Field

[0001] This invention relates to the field of television antenna technology, and in particular to a high- and low-frequency dual-polarized thin-film television antenna. Background Technology

[0002] Currently, most TV antennas on the market are single-polarized. The electromagnetic waves emitted by the transmitter travel through the air to the signal receiver. If the receiver is indoors, the electromagnetic waves are reflected and refracted by the building, making the indoor signal polarization more complex, and there may be vertical polarization and horizontal polarization.

[0003] Furthermore, electromagnetic waves emitted by transmitters in the same area may also be vertically polarized and horizontally polarized, requiring two antennas for outdoor reception.

[0004] Therefore, the market needs dual-polarized TV antennas. Currently, there is a type of vertical and horizontal dual-polarized TV antenna on the market. The single-line output requires the addition of a combiner board, which makes the structure relatively complex. Without the combiner board, it is a dual-line output.

[0005] The applicant has discovered that the prior art has at least the following technical problems: single-line output can only be achieved by adding a combiner board, which leads to a complex antenna structure. Summary of the Invention

[0006] The purpose of this invention is to provide a high- and low-frequency dual-polarized thin-film television antenna to solve the technical problem in existing technologies where single-line output can only be achieved by adding a combiner board, resulting in a complex antenna structure. The various technical effects of the preferred solutions among the many technical solutions provided by this invention are detailed below.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] The high- and low-frequency dual-polarized thin-film television antenna provided by this invention includes:

[0009] The slotted array is provided in four groups, which are symmetrically distributed vertically and horizontally, and each group of slotted arrays has an opening on the side near the center of symmetry.

[0010] The matching feeder wires are provided in four sets, and the four sets of matching feeder wires are respectively connected between the adjacent ends of two adjacent openings, and the four sets of matching feeder wires are symmetrically distributed vertically and horizontally.

[0011] In the four sets of matching feed lines, two sets of matching feed lines arranged diagonally are provided with a feed point in the middle. The angle between the two feed points and the center line of the symmetry of the two sets of slotted arrays symmetrically distributed on the left and right is 45 degrees. The two feed points are respectively connected to the center line of the coaxial line and the shielding line.

[0012] As a further improvement of the present invention, the matching feeder includes a first metal segment and a second metal segment, the first metal segment and the second metal segment are arranged perpendicularly, the first metal segment is connected to a second end of one of the sets of openings, and the second metal segment is connected to a first end of an adjacent opening.

[0013] As a further improvement of the present invention, the first gap between the first metal segment and the second metal segment of two adjacent matching feed lines is such that it gradually increases from the center of symmetry toward the opening direction.

[0014] As a further improvement of the present invention, chamfers are provided at both ends of the slotted array near the center of symmetry.

[0015] As a further improvement of the present invention, it also includes a first dielectric substrate, wherein the slotted array and the matching feed line are metal layers laid on the first dielectric substrate.

[0016] As a further improvement of the present invention, it also includes a second dielectric substrate, a front line box and a rear cover box. The first dielectric substrate and the second dielectric substrate are respectively provided with positioning holes and wiring holes. The positioning screw passes through the positioning hole to connect the dielectric substrate to the front line box. The slotted array and the matching feed line are located between the first dielectric substrate and the second dielectric substrate.

[0017] The wiring hole corresponds to the power supply point. The wiring screw passes through the terminal and power supply point on the center line or shield line of the coaxial cable and connects to the wiring hole, thereby connecting the center line and shield line of the coaxial cable to the two power supply points respectively.

[0018] As a further improvement of the present invention, the front panel box and the rear cover box are respectively ultrasonically welded to the first dielectric substrate and the second dielectric substrate.

[0019] As a further improvement of the present invention, the first dielectric substrate and the second dielectric substrate are PP, PC, PVC, PE, PET, FR4, cardboard or bakelite.

[0020] As a further improvement of the present invention, the metal layer is a thin film or printed circuit composed of gold, silver, copper or aluminum.

[0021] The beneficial effects of this invention are as follows: The high- and low-frequency dual-polarized thin-film television antenna provided by this invention includes slotted arrays and matching feed lines. The slotted arrays are arranged in four groups, which are symmetrically distributed vertically and horizontally to form two symmetrical arrays, namely coupling arrays and feeding arrays, which respectively present a physical +45° and -45° angle to achieve cross-polarization. Through this ingenious coupling combination, adjacent matching feed lines are coupled in pairs, so that one set of feed can simultaneously feed four groups of slotted arrays. The antenna is powered orthogonally to the opposite side and the same pole, so that the current of the upper and lower slotted arrays is in the same direction, the current of the left and right slotted arrays is in the same direction, and the current of the upper and lower slotted arrays is orthogonal to the current of the left and right slotted arrays, thus realizing dual-polarized reception.

[0022] The matching feed line is connected between the adjacent ends of two adjacent openings. By adjusting the length of the matching feed line, VHF (174-230MHz) signal reception can be achieved simultaneously, satisfying the simultaneous reception of high and low frequency transmitted signals. The two feed points are respectively set in the middle of the diagonally arranged matching feed line. The two feed points are respectively connected to the center line and the shield line of the coaxial line to achieve coaxial feeding. The high and low frequency dual-polarized thin-film TV antenna provided by the present invention can achieve single-line output without adding a combiner board, and has a simple structure. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of one embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of another embodiment of the present invention;

[0027] Figure 4 These are the UHF (470-700MHz) horizontal and vertical gain response lines of this invention;

[0028] Figure 5 This is the total gain response curve for UHF (470-700MHz) according to the present invention;

[0029] Figure 6 This is the VHF (174-230Hz) horizontal and vertical gain response line of this invention;

[0030] Figure 7 This is the total gain response curve for VHF (174-230Hz) according to the present invention.

[0031] In the figure: 1. First dielectric substrate; 2. Slotted array; 3. Matching feed line; 4. Feed point; 5. Coaxial line; 6. Second dielectric substrate; 7. Front box; 8. Rear cover box; 21. Opening; 31. First metal segment; 32. Second metal segment. Detailed Implementation

[0032] Please refer to the attached diagram below. Figures 1 to 7 This document explains the content of the invention and the differences between the invention and existing technologies. The technical solutions (including preferred solutions) of the invention are further described in detail below with reference to accompanying drawings and examples of optional embodiments. It should be noted that any technical feature or solution in this embodiment is one or more of a variety of optional technical features or solutions. For the sake of brevity, this document cannot exhaustively list all alternative technical features and solutions of the invention, nor is it convenient to emphasize that each implementation of a technical feature is one of multiple optional implementations. Therefore, those skilled in the art should understand that any technical means provided by the invention can be replaced, or any two or more technical means or features provided by the invention can be combined to obtain new technical solutions. No technical feature or solution in this embodiment limits the scope of protection of the invention. The scope of protection of the invention should include any alternative technical solutions that can be conceived by those skilled in the art without creative effort, as well as new technical solutions obtained by combining any two or more technical means or features provided by the invention.

[0033] In the description of this invention, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] This invention provides a high- and low-frequency dual-polarized thin-film TV antenna that can achieve single-line output without the need for an additional combiner board and has a simple structure.

[0036] The following is combined Figures 1 to 7 The technical solution provided by this invention will be described in more detail below.

[0037] This invention provides a high- and low-frequency dual-polarized thin-film television antenna, comprising:

[0038] The slotted array is provided in four groups, which are symmetrically distributed vertically and horizontally, and each group of slotted arrays has an opening on the side near the center of symmetry.

[0039] The matching feeder wires are provided in four sets, and the four sets of matching feeder wires are respectively connected between the adjacent ends of two adjacent openings, and the four sets of matching feeder wires are symmetrically distributed vertically and horizontally.

[0040] In the four sets of matching feed lines, two sets of matching feed lines arranged diagonally are provided with a feed point in the middle. The angle between the two feed points and the center line of the symmetry of the two sets of slotted arrays symmetrically distributed on the left and right is 45 degrees. The two feed points are respectively connected to the center line of the coaxial line and the shielding line.

[0041] The high- and low-frequency dual-polarized thin-film television antenna provided by this invention includes slotted arrays and matching feed lines. Four sets of slotted arrays are arranged symmetrically in all directions, forming two symmetrical arrays: a coupling array and a feeding array. These arrays exhibit physical angles of +45° and -45° respectively, achieving cross-polarization. Through this ingenious coupling combination, adjacent matching feed lines are coupled in pairs, allowing one set of feed lines to simultaneously power all four sets of slotted arrays. The antenna is powered orthogonally to the opposite side and to the same pole, ensuring that the currents in the upper and lower slotted arrays are in the same direction, as are the currents in the left and right slotted arrays. The currents in the upper and lower slotted arrays are orthogonal to the currents in the left and right slotted arrays, thus achieving dual-polarized reception.

[0042] The matching feed line is connected between the adjacent ends of two adjacent openings. By adjusting the length of the matching feed line, VHF (174-230MHz) signal reception can be achieved simultaneously, satisfying the simultaneous reception of high and low frequency transmitted signals. The two feed points are respectively set in the middle of the diagonally arranged matching feed line. The two feed points are respectively connected to the center line and the shield line of the coaxial line to achieve coaxial feeding. The high and low frequency dual-polarized thin-film TV antenna provided by the present invention can achieve single-line output without adding a combiner board, and has a simple structure.

[0043] As a further improvement of the present invention, the matching feeder includes a first metal segment and a second metal segment, the first metal segment and the second metal segment are arranged perpendicularly, the first metal segment is connected to a second end of one of the sets of openings, and the second metal segment is connected to a first end of an adjacent opening.

[0044] In this further improvement, the matching feed line includes a first metal segment and a second metal segment, the first metal segment and the second metal segment are arranged perpendicularly, such that the middle part of the matching feed line is close to the center of symmetry, and the feed point is located in the middle of the antenna, arranged obliquely. The first metal segment and the second metal segment can extend the electrical length of the slotted array so that the antenna can receive VHF (174-230MHz) signals.

[0045] As a further improvement of the present invention, the first gap between the first metal segment and the second metal segment of two adjacent matching feed lines gradually increases from the center of symmetry towards the opening direction. This gradually changing first gap is beneficial for signal reception.

[0046] As a further improvement of the present invention, chamfers are provided at both ends of the slotted array near the center of symmetry. In this further improvement, the second gap between the chamfers on two adjacent slotted arrays is set to 0.5-10mm. By rationally arranging the coupling gap (second gap) between the two slotted arrays, adjusting the second gap can modify the impedance characteristics of the UHF low end, and at the same time, it can also make the antenna smaller.

[0047] As a further improvement of the present invention, it also includes a first dielectric substrate, wherein the slotted array and the matching feed line are metal layers laid on the first dielectric substrate.

[0048] As a further improvement of the present invention, the metal layer is a thin film or printed circuit composed of gold, silver, copper or aluminum.

[0049] In this further improvement, the slotted array and the matching feed line are laid on the first dielectric substrate with a metal layer, which can ensure that the dimensional accuracy and positional accuracy of the slotted array and the matching feed line are more accurate.

[0050] As a further improvement of the present invention, it also includes a second dielectric substrate, a front line box and a rear cover box. The first dielectric substrate and the second dielectric substrate are respectively provided with positioning holes and wiring holes. The positioning screw passes through the positioning hole to connect the dielectric substrate to the front line box. The slotted array and the matching feed line are located between the first dielectric substrate and the second dielectric substrate.

[0051] The wiring hole corresponds to the power supply point. The wiring screw passes through the terminal and power supply point on the center line or shield line of the coaxial cable and connects to the wiring hole, thereby connecting the center line and shield line of the coaxial cable to the two power supply points respectively.

[0052] In this further improvement, by placing the slotted array and the matching feed line between the second dielectric substrate and the first dielectric substrate, the slotted array and the matching feed line are effectively protected. By setting positioning holes and wiring holes, the antenna positioning and coaxial cable wiring requirements are met, and single-line output is achieved.

[0053] As a further improvement of the present invention, the front panel box and the rear panel box are respectively ultrasonically welded to the first dielectric substrate and the second dielectric substrate.

[0054] As a further improvement of the present invention, the first dielectric substrate and the second dielectric substrate are PP, PC, PVC, PE, PET, FR4, cardboard or bakelite.

[0055] Example 1:

[0056] The high- and low-frequency dual-polarized thin-film television antenna provided by this invention, such as... Figure 2 As shown, it includes a first dielectric substrate 1 and slotted array 2 and matching feed line 3 laid on the first dielectric substrate 1. The slotted array 2 and the matching feed line 3 are each provided in four sets. The four sets of slotted array 2 are symmetrically distributed in the top, bottom and left and right. An opening 21 is provided on the side of the four sets of slotted array 2 near the center of symmetry.

[0057] The four sets of matching feed lines 3 are respectively connected between the adjacent ends of two adjacent openings 21, and the four sets of matching feed lines 3 are symmetrically distributed vertically and horizontally.

[0058] In the middle of two sets of matching feed lines 3 arranged diagonally among the four sets of matching feed lines 3, there are feed points 4. The angle between the two feed points 4 and the center line of the symmetry of the two sets of slotted arrays 2 distributed symmetrically on the left and right is 45 degrees. The two feed points 4 are respectively connected to the center line of the coaxial line 5 and the shielding line.

[0059] Specifically, the matching feeder wire 3 includes a first metal segment 31 and a second metal segment 32. The first metal segment 31 and the second metal segment 32 are arranged perpendicularly. The first metal segment 31 is connected to the second end of one of the sets of openings 21, and the second metal segment 32 is connected to the first end of the adjacent opening 21.

[0060] Furthermore, the first gap between the first metal segment 31 and the second metal segment 32 of two adjacent matching feed lines 3 is such that it gradually increases from the center of symmetry toward the opening 21.

[0061] Furthermore, chamfers are provided at both ends of the slotted array 2 near the center of symmetry. The second gap between the chamfers on two adjacent slotted arrays 2 is set to 0.5-10mm. By rationally arranging the coupling gap (second gap) between the two slotted arrays 2, the impedance characteristics of the UHF low end can be modified, and the antenna can also be made smaller.

[0062] The high- and low-frequency dual-polarized thin-film television antenna provided by this invention, such as... Figure 1 As shown, it also includes a second dielectric substrate 6, a front box 7 and a rear cover box 8. The first dielectric substrate 1 and the second dielectric substrate 6 are respectively provided with positioning holes and wiring holes. The positioning screw passes through the positioning hole to connect the first dielectric substrate 1 and the second dielectric substrate 6 to the front box 7. The slotted array 2 and the matching feed line 3 are located between the first dielectric substrate 1 and the second dielectric substrate 6.

[0063] The wiring hole corresponds to the power supply point 4. The wiring screw passes through the terminal on the center line or shielding line of the coaxial line 5 and connects to the power supply point 4 and the wiring hole, so that the center line and shielding line of the coaxial line 5 are respectively connected to the two power supply points 4.

[0064] Finally, the front panel box 7 and the rear panel box 8 are ultrasonically welded to the first dielectric substrate and the second dielectric substrate, respectively.

[0065] Furthermore, the first dielectric substrate 1 and the second dielectric substrate 6 are dielectric substrates such as PP, PC, PVC, PE, PET, FR4, cardboard, or bakelite, or they can be air dielectrics. The slotted array 2 and the matching feed line 3 are metal layers laid on the first dielectric substrate 1, and the metal layers are metal thin films or printed circuits composed of conductive materials such as gold, silver, copper, or aluminum.

[0066] like Figure 3 As shown, if limited to UHF reception, the antenna's line dimensions can be adjusted, especially the length and width of the slotted element 2 and the second gap between adjacent slotted elements 2, which can make the antenna miniaturized.

[0067] Please see Figure 4 , Figure 4 The images show the horizontal and vertical gain response lines of the UHF (470-700MHz) dual-polarized thin-film television antenna provided by this invention. The red line represents the horizontal gain response line, and the green line represents the vertical gain response line. The two lines are essentially the same.

[0068] Please see Figure 5 , Figure 5 The UHF total gain response curve of the high- and low-frequency dual-polarized thin-film television antenna provided by this invention.

[0069] Please see Figure 6 , Figure 6 The images show the horizontal and vertical gain response lines of the high- and low-frequency dual-polarized thin-film television antenna VHF (174-230Hz) provided by this invention. The red line represents the horizontal gain response line, and the green line represents the vertical gain response line. The two lines are essentially the same.

[0070] Please see Figure 7 , Figure 7 The UHF total gain response curve of the high- and low-frequency dual-polarized thin-film television antenna provided by this invention.

[0071] UHF Total Gain

[0072]

[0073] UHF Vertical and Horizontal Gain Benefits

[0074]

[0075] VHF total gain

[0076]

[0077] VHF Vertical and Horizontal Gain Gain

[0078]

[0079] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A high- and low-frequency dual-polarized thin-film television antenna, characterized in that, include: The slotted array is provided in four groups, which are symmetrically distributed vertically and horizontally, and each group of slotted arrays has an opening on the side near the center of symmetry. The matching feeder wires are provided in four sets, and the four sets of matching feeder wires are respectively connected between the adjacent ends of two adjacent openings, and the four sets of matching feeder wires are symmetrically distributed vertically and horizontally. Feeding points are provided in the middle of two sets of diagonally arranged matching feeder wires in the four sets of matching feeder wires. The angle between the two feeding points and the center line of the symmetry of the two sets of slotted arrays that are symmetrically distributed on the left and right is 45 degrees. The two feeding points are respectively connected to the center line of the coaxial line and the shielding wire. The matching feeder includes a first metal segment and a second metal segment, the first metal segment and the second metal segment are arranged perpendicularly, the first metal segment is connected to the second end of one of the sets of openings, and the second metal segment is connected to the first end of an adjacent opening.

2. The high- and low-frequency dual-polarized thin-film television antenna according to claim 1, characterized in that, The first gap between the first metal segment and the second metal segment of two adjacent matching feed lines is such that it gradually increases from the center of symmetry toward the opening direction.

3. The high- and low-frequency dual-polarized thin-film television antenna according to claim 1, characterized in that, The slotted array has chamfered corners at both ends near the center of symmetry.

4. The high- and low-frequency dual-polarized thin-film television antenna according to any one of claims 1-3, characterized in that, It also includes a first dielectric substrate, wherein the slotted array and the matching feed line are metal layers laid on the first dielectric substrate.

5. The high- and low-frequency dual-polarized thin-film television antenna according to claim 4, characterized in that, It also includes a second dielectric substrate, a front line box and a rear cover box. The first dielectric substrate and the second dielectric substrate are respectively provided with positioning holes and wiring holes. The positioning screw passes through the positioning hole to connect the dielectric substrate to the front line box. The slotted array and the matching feeder are located between the first dielectric substrate and the second dielectric substrate. The wiring hole corresponds to the power supply point. The wiring screw passes through the terminal and power supply point on the center line or shield line of the coaxial cable and connects to the wiring hole, thereby connecting the center line and shield line of the coaxial cable to the two power supply points respectively.

6. The high- and low-frequency dual-polarized thin-film television antenna according to claim 5, characterized in that, The front panel and the rear panel are ultrasonically welded to the first dielectric substrate and the second dielectric substrate, respectively.

7. The high- and low-frequency dual-polarized thin-film television antenna according to claim 5, characterized in that, The first dielectric substrate and the second dielectric substrate are made of PP, PC, PVC, PE, PET, FR4, cardboard or bakelite.

8. The high- and low-frequency dual-polarized thin-film television antenna according to claim 7, characterized in that, The metal layer is a thin film or printed circuit composed of gold, silver, copper or aluminum.

Images