Omnidirectional TV antenna structure and omnidirectional TV antenna

Abstract

The invention discloses an omnidirectional television antenna structure and an omnidirectional television antenna, comprising a control board, on which a combiner, a matching module and a signal output terminal which are electrically connected in sequence are arranged; a UHF band receiving module, which comprises four annular oscillators which are evenly arranged around the periphery of a central point, and the four annular oscillators are connected in parallel to form an output 75-ohm antenna array; a VHF band receiving module, which comprises a dipole which is connected to the control board after being matched to 75 ohms by a balun; signals received by the UHF band receiving module and the VHF band receiving module are combined by a combiner and matched to 75 ohms by a matching module, and then output from the signal output terminal; the television antenna comprises an upper cover, a lower cover and the antenna structure; the antenna gain is increased by adopting an arraying method, so that the antenna has better omnidirectionality, can efficiently receive signals from any direction, and will not produce a situation where the signal is obviously weak in one direction.

Description

Technical Field

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

[0002] The antenna vibrator sends the received weak electromagnetic waves in the air to the transceiver equipment through the coaxial cable for processing. However, cars and ships will constantly change directions while driving. The receiving antenna needs an omnidirectional antenna to ensure that the TV signal received by the car or ship will not change greatly while driving. However, most of the RV antennas currently on the market have strong directional characteristics. The TV signal is relatively strong in a fixed direction and very weak in other directions. After moving, the car or ship needs to readjust the antenna direction to achieve the best reception effect. There are disadvantages such as insufficient gain and great influence from base stations and the surrounding environment. There is an urgent need for an omnidirectional TV antenna structure and an omnidirectional TV antenna. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an omnidirectional television antenna structure and an omnidirectional television antenna.

[0004] An embodiment of the present invention adopts a technical solution to solve the technical problem: an omnidirectional television antenna structure, comprising:

[0005] A control board, on which a combiner, a matching module, and a signal output terminal are provided which are electrically connected in sequence;

[0006] The UHF band receiving module includes four ring oscillators evenly arranged around a central point, and the four ring oscillators are connected in parallel to form an output 75 ohm antenna array;

[0007] The VHF band receiving module includes a dipole connected to the control board after being matched to 75 ohms by a balun; the signals received by the UHF band receiving module and the VHF band receiving module are combined by a combiner and matched to 75 ohms by a matching module, and then output from the signal output terminal.

[0008] Further, the combiner includes inductors L1-L5 and capacitors C1-C6, one end of the inductor L1 is connected to the matching output end of the VHF band receiving module, the other end of the inductor L1 is respectively connected to one end of the inductor L2 and one end of the capacitor C1, the other end of the inductor L2 is respectively connected to one end of the inductor L3 and one end of the capacitor C2, the other end of the capacitor C1 is respectively connected to the other end of the capacitor C2 and the ground, the other end of the inductor L3 is respectively connected to one end of the matching module and one end of the capacitor C4 via the capacitor C3, the other end of the matching module is connected to the signal output terminal, the other end of the capacitor C4 is respectively connected to one end of the inductor L4 and one end of the capacitor C5, the other end of the capacitor C5 is respectively connected to one end of the inductor L5 and one end of the capacitor C6, the other end of the inductor L4 is respectively connected to the other end of the inductor L5 and the ground, and the other end of the capacitor C6 is connected to the matching output end of the UHF band receiving module.

[0009] Further, the matching module is configured as a microstrip matching line.

[0010] Furthermore, the ring oscillator comprises:

[0011] The first straight line segment;

[0012] A first curved segment, one end of which is connected to one end of the first straight segment;

[0013] A second curved segment, one end of which is connected to the other end of the first straight segment;

[0014] A second straight segment, one end of which is connected to the other end of the first curved segment, and the other end of which is connected to the control board as a first output end;

[0015] The third straight line segment has one end connected to the other end of the second curved segment, and the other end connected to the control board as a second output end.

[0016] Further, the four ring-shaped oscillators include two horizontal ring-shaped oscillators arranged opposite to each other around a center point and two vertical ring-shaped oscillators arranged opposite to each other around a center point.

[0017] Further, the dipole is configured as a ring-shaped dipole arranged around a central point.

[0018] Furthermore, the omnidirectional television antenna comprises an upper cover, a lower cover and the antenna structure, the upper cover is connected to the lower cover, and the antenna structure is arranged between the upper cover and the lower cover.

[0019] Furthermore, a fixing structure for fixing the antenna structure is provided on one side of the lower cover close to the upper cover.

[0020] Furthermore, the fixing structure includes a plurality of positioning plates, and the upper end surfaces of the positioning plates are provided with slots for clamping the annular oscillator and the dipole.

[0021] Furthermore, the omnidirectional television antenna also includes a connecting socket connected to the lower cover.

[0022] The beneficial effects of the present invention include: an omnidirectional television antenna structure and an omnidirectional television antenna, comprising a control board, on which a combiner, a matching module and a signal output terminal are arranged in sequence and electrically connected; a UHF band receiving module, comprising four annular oscillators evenly arranged around the periphery of a central point, the four annular oscillators are connected in parallel to form an output 75-ohm antenna array; a VHF band receiving module, comprising a dipole connected to the control board after being matched to 75 ohms by a balun; signals received by the UHF band receiving module and the VHF band receiving module are combined by the combiner and matched to 75 ohms by the matching module, and then output from the signal output terminal; the television antenna comprises an upper cover, a lower cover and the antenna structure; the antenna gain is increased by adopting an array arrangement method, so that the antenna has better omnidirectionality, can efficiently receive signals from any direction, and will not produce a situation where the signal is obviously weak in one direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 is a first structural schematic diagram of an omnidirectional television antenna;

[0025] Figure 2 is a second structural schematic diagram of an omnidirectional television antenna;

[0026] Figure 3 This is an exploded view of an omnidirectional TV antenna;

[0027] Figure 4 is a schematic diagram of an omnidirectional television antenna structure;

[0028] Figure 5 This is the circuit schematic diagram on the control board;

[0029] Figure 6 This is the radiation pattern of an existing antenna at 0 degrees (Phi=0) on the E plane;

[0030] Figure 7 This is the radiation pattern of an existing antenna at 90 degrees (Phi=90) on the E plane;

[0031] Figure 8 This is the radiation pattern of an existing antenna on the H plane (Theta=90);

[0032] Fig. 9 It is the radiation pattern of omnidirectional TV antenna at 0 degree (Phi=0) on E plane;

[0033] Fig.10 It is the radiation pattern of omnidirectional TV antenna at 90 degrees (Phi=90) on the E plane;

[0034] Fig.11 This is the radiation pattern of the omnidirectional TV antenna on the H plane (Theta=90). DETAILED DESCRIPTION

[0035] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0036] In the description of the present invention, the meaning of "more than" is more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0037] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0039] Reference Figures 1 to 11 , omnidirectional TV antenna structure, including:

[0040] A control board 10 on which a combiner 11, a matching module 12 and a signal output terminal 20 are arranged in sequence and electrically connected;

[0041] The UHF band receiving module comprises four ring oscillators 30 evenly arranged around a central point, and the four ring oscillators 30 are connected in parallel to form an output 75 ohm antenna array;

[0042] The VHF band receiving module includes a dipole 40 connected to the control board 10 after being matched to 75 ohms by a balun; the signals received by the UHF band receiving module and the VHF band receiving module are combined by the combiner 11 and matched to 75 ohms by the matching module 12, and then output from the signal output terminal 20.

[0043] In the present invention, the antenna UHF band adopts 4 ring oscillators, and the ring oscillators are connected in parallel with 300 ohm parallel lines to form a 75 ohm antenna array design with an output. The VHF band adopts a dipole + balun design matched to 75 ohms. At the output end of the VHF and UHF matching, a combiner composed of an LC filter circuit is used to combine the VHF and UHF signals together, and then a microstrip line matching circuit is used to match the combined signal to a 75 ohm output. This design has the following advantages: 1. The gain of the antenna is increased by using an array; 2. The antenna has good omnidirectionality and can efficiently receive signals from any direction without producing an obvious weak signal in one direction.

[0044] Reference Figure 6-11 , Figure 6 This is the radiation pattern of an existing antenna at 0 degrees (Phi=0) on the E plane. Figure 7 This is the radiation pattern of an existing antenna at 90 degrees (Phi=90) on the E plane. Figure 8 This is the radiation pattern of an existing antenna on the H plane (Theta=90). Fig. 9 The radiation pattern of the omnidirectional TV antenna in this application at 0 degrees (Phi=0) on the E plane, Fig.10 The radiation pattern of the omnidirectional TV antenna in this application at 90 degrees (Phi=90) on the E plane, Fig.11 Table 1 is the radiation pattern of the omnidirectional TV antenna of this application on the H plane (Theta=90). The gain and efficiency are compared. From the radiation pattern, the omnidirectionality of this application is better (the waveform is more round), and the gain and efficiency are higher overall.

[0045] Table 1 Gain and efficiency comparison

[0046]

[0047] The combiner 11 includes inductors L1-L5 and capacitors C1-C6, one end of the inductor L1 is connected to the matching output end of the VHF band receiving module, the other end of the inductor L1 is respectively connected to one end of the inductor L2 and one end of the capacitor C1, the other end of the inductor L2 is respectively connected to one end of the inductor L3 and one end of the capacitor C2, the other end of the capacitor C1 is respectively connected to the other end of the capacitor C2 and the ground, the other end of the inductor L3 is respectively connected to one end of the matching module 12 and one end of the capacitor C4 via the capacitor C3, the other end of the matching module 12 is connected to the signal output terminal 20, the other end of the capacitor C4 is respectively connected to one end of the inductor L4 and one end of the capacitor C5, the other end of the capacitor C5 is respectively connected to one end of the inductor L5 and one end of the capacitor C6, the other end of the inductor L4 is respectively connected to the other end of the inductor L5 and the ground, and the other end of the capacitor C6 is connected to the matching output end of the UHF band receiving module.

[0048] The matching module 12 is configured as a microstrip matching line.

[0049] The ring oscillator 30 comprises:

[0050] The first straight line segment;

[0051] A first curved segment, one end of which is connected to one end of the first straight segment;

[0052] A second curved segment, one end of which is connected to the other end of the first straight segment;

[0053] A second straight segment, one end of which is connected to the other end of the first curved segment, and the other end of which is connected to the control board 10 as a first output end;

[0054] One end of the third straight line segment is connected to the other end of the second curved segment, and the other end is connected to the control board 10 as a second output end.

[0055] The four ring-shaped oscillators 30 include two horizontal ring-shaped oscillators 31 arranged opposite to each other around a center point and two vertical ring-shaped oscillators 32 arranged opposite to each other around a center point.

[0056] The dipole 40 is provided as a ring-shaped dipole arranged around a central point.

[0057] The omnidirectional television antenna comprises an upper cover 50 , a lower cover 60 and the antenna structure. The upper cover 50 is connected to the lower cover 60 , and the antenna structure is arranged between the upper cover 50 and the lower cover 60 .

[0058] A fixing structure for fixing the antenna structure is disposed on one side of the lower cover 60 close to the upper cover 50 .

[0059] The fixing structure includes a plurality of positioning plates 70 , and the upper end surfaces of the positioning plates 70 are provided with clamping grooves 71 for clamping the annular oscillator 30 and the dipole 40 .

[0060] The omnidirectional television antenna further includes a connection base 80 connected to the lower cover 60 .

[0061] Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. An omnidirectional television antenna structure, characterized in that: include: A control board (10) on which a combiner (11), a matching module (12) and a signal output terminal (20) are provided which are electrically connected in sequence; The combiner (11) comprises inductors L1-L5 and capacitors C1-C6, one end of the inductor L1 is connected to the matching output end of the VHF band receiving module, the other end of the inductor L1 is respectively connected to one end of the inductor L2 and one end of the capacitor C1, the other end of the inductor L2 is respectively connected to one end of the inductor L3 and one end of the capacitor C2, the other end of the capacitor C1 is respectively connected to the other end of the capacitor C2 and the ground, the other end of the inductor L3 is respectively connected to one end of the matching module (12) and one end of the capacitor C4 via the capacitor C3, the other end of the matching module (12) is connected to the signal output terminal (20), the other end of the capacitor C4 is respectively connected to one end of the inductor L4 and one end of the capacitor C5, the other end of the capacitor C5 is respectively connected to one end of the inductor L5 and one end of the capacitor C6, the other end of the inductor L4 is respectively connected to the other end of the inductor L5 and the ground, and the other end of the capacitor C6 is connected to the matching output end of the UHF band receiving module; A UHF band receiving module, comprising four annular oscillators (30) uniformly arranged around a central point, the four annular oscillators (30) being connected in parallel to form an output 75 ohm antenna array; the four annular oscillators (30) comprising two horizontal annular oscillators (31) relatively arranged around the central point and two vertical annular oscillators (32) relatively arranged around the central point; A VHF band receiving module comprises a dipole (40) connected to the control board (10) after being matched to 75 ohms by a balun; the dipole (40) is configured as a ring dipole arranged around the center point; signals received by the UHF band receiving module and the VHF band receiving module are combined by the combiner (11) and matched to 75 ohms by the matching module (12), and then output from the signal output terminal (20).

2. The omnidirectional television antenna structure according to claim 1, characterized in that: The matching module (12) is configured as a microstrip matching line.

3. The omnidirectional television antenna structure according to claim 1, characterized in that: The ring oscillator (30) comprises: The first straight line segment; A first curved segment, one end of which is connected to one end of the first straight segment; A second curved segment, one end of which is connected to the other end of the first straight segment; a second straight segment, one end of which is connected to the other end of the first curved segment, and the other end of which is connected to the control board (10) as a first output end; A third straight line segment, one end of which is connected to the other end of the second curved segment, and the other end of which is connected to the control board (10) as a second output end.

4. Omnidirectional TV antenna, characterized by: The invention comprises an upper cover (50), a lower cover (60), and the antenna structure according to any one of claims 1 to 3, wherein the upper cover (50) is connected to the lower cover (60), and the antenna structure is arranged between the upper cover (50) and the lower cover (60).

5. The omnidirectional television antenna according to claim 4, characterized in that: A fixing structure for fixing the antenna structure is provided on a side of the lower cover (60) close to the upper cover (50).

6. The omnidirectional television antenna according to claim 5, characterized in that: The fixing structure comprises a plurality of positioning plates (70), and the upper end surfaces of the positioning plates (70) are provided with clamping grooves (71) for clamping the annular oscillator (30) and the dipole (40).

7. The omnidirectional television antenna according to claim 4, characterized in that: It also includes a connecting seat (80) connected to the lower cover (60).

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