A multi-channel television signal-FM signal common antenna unit and antenna array

Abstract

The present invention provides a multi-channel television signal and frequency modulation signal shared antenna unit, including a radiation component, including at least one group of radiation components, the radiation component including a first vibrator member and a second vibrator member arranged along different directions, and one end of the first vibrator member and the second vibrator member are connected; a feeding component, including a feeding bracket connected to the radiation component, the feeding bracket is provided with a feeding circuit, and the feeding circuit transmits an electrical signal to the radiation component. The radiation component in the present invention widens the impedance bandwidth of the antenna by setting vibrators in two directions, so that the antenna can be compatible with 4-channel or 3-channel television signals and FM radio signals, thereby realizing the function of the same antenna being able to transmit television signals and frequency modulation signals at the same time.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a multi-channel television signal-frequency modulation signal common antenna unit and an antenna array. Background Art

[0002] At present, most radio and television towers have no installation location for 4CH antennas, while the frequency ranges of TV channel 4 and FM antennas are close to 76-84MHz and 87-108MHz, respectively, totaling 32MHz. The current antenna impedance bandwidth does not reach 32MHz, and it is impossible to share a pair of antennas for TV channel 4 and FM. At present, the traditional 4CH and FM double dipole antennas are realized by using two cylindrical half-wavelength oscillators separated by half a wavelength, fed by a power divider, and placed about a quarter of a wavelength above the reflective net. This antenna impedance bandwidth is limited and is only suitable for use in each channel. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of the signal transmitting antenna in the prior art that the impedance bandwidth is small and the signal frequency band that can be adapted is narrow, thereby providing an antenna unit and antenna array that can simultaneously transmit multi-channel television signals and FM signals.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a multi-channel television signal-FM signal shared antenna unit, comprising:

[0006] A radiation component, comprising at least one group of radiation components, wherein the radiation components include a first vibrator component and a second vibrator component arranged in different directions, and one end of the first vibrator component is connected to the second vibrator component;

[0007] The feeding component comprises a feeding bracket connected to the radiating component, wherein a feeding circuit is arranged in the feeding bracket, and the feeding circuit transmits an electrical signal to the radiating component.

[0008] As a preferred embodiment of the multi-channel television signal-FM signal shared antenna unit provided by the present invention, the first oscillator component and the second oscillator component are both connected to the feeding bracket, and the three together form a triangular radiation area.

[0009] As a preferred embodiment of the multi-channel television signal-FM signal shared antenna unit provided by the present invention, the first oscillator component is vertically connected to the feeding bracket, and two ends of the second oscillator component are connected to the first oscillator component and the feeding bracket.

[0010] As a preferred embodiment of the multi-channel television signal-FM signal shared antenna unit provided by the present invention, the first dipole component includes two first dipole arms, and the second dipole component includes a pair of second dipole arms; the two first dipole arms are sealed and connected by a polytetrafluoroethylene insulating seal, and the two second dipole arms are respectively connected between each of the first dipole arms and the feeding bracket.

[0011] As a preferred embodiment of the multi-channel television signal-FM signal shared antenna unit provided by the present invention, the first dipole arm is a cylindrical hollow tube, and the second dipole member can be a square column or cylindrical hollow tube, or a metal strip.

[0012] As a preferred embodiment of the multi-channel television signal-FM signal shared antenna unit provided by the present invention, one end of the feeding bracket is the output end connected to the middle of the first oscillator component, and the other end is connected to the electrical signal source.

[0013] As a preferred embodiment of the multi-channel television signal-FM signal shared antenna unit provided by the present invention, the feeding bracket is a square rigid coaxial line, the square tube of which is the outer conductor, an inner conductor is arranged inside the outer conductor, and the inner conductor is fixed inside the outer conductor by means of a polytetrafluoroethylene insulating support; the outer conductor is fixedly connected to the outer shell of the first vibrator component, and the inner conductor extends from the output end and enters the interior of the first vibrator component to form an open-circuit compensation capacitor for impedance matching.

[0014] As a preferred embodiment of the multi-channel television signal-FM signal shared antenna unit provided by the present invention, the radiating component includes two groups of symmetrically arranged radiating components, each group of radiating components is connected to a feeding bracket, and one end of the two feeding brackets are intersected and connected together to form a power distribution point of the feeding circuit, and a feeding interface is provided at the power distribution point.

[0015] The present invention also provides a multi-channel television signal-frequency modulation signal shared antenna array, which includes a plurality of the aforementioned antenna units. The antenna array has a plurality of layers, and each layer of the antenna array includes four of the antenna units. The four antenna units are distributed in a horizontal plane at 90 degrees around a center point, and the directions of the electromagnetic field vectors of the radiated electromagnetic waves of adjacent antenna units are perpendicular.

[0016] As a preferred embodiment of the multi-channel television signal-FM signal shared antenna array provided by the present invention, the setting direction of the first oscillator component in the antenna unit forms an angle of positive 45 degrees or negative 45 degrees with the ground.

[0017] Beneficial effects of the present invention: The antenna unit for multi-channel TV signal-FM signal provided by the present invention adopts a polygonal radiation component formed by vibrator components arranged in multiple directions, which can significantly broaden the impedance bandwidth of the antenna, making 4CH TV compatible with FM radio, thereby combining the TV 4-channel transmitting antenna and the FM antenna into one, and turning it into a set of broadband antennas. This technology not only greatly saves the tower mast space, but is also quite beneficial to reducing the tower body load, improving the safety of the transmitting tower structure and extending the service life of the tower structure. The antenna array provided by the present invention adopts an antenna unit array arranged with positive and negative 45-degree oblique polarization, so that the electromagnetic field vectors of the electromagnetic waves radiated by adjacent units are orthogonal in the overlapping area of ​​the horizontal plane, avoiding the problem of field shape deterioration and poor coverage effect caused by spatial phase difference when the electromagnetic field vectors are superimposed, and the radiated electromagnetic wave field shape has good uniformity in various aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0019] Figure 1 It is a structural schematic diagram of a hybrid polarization antenna unit;

[0020] Figure 2 It is a connection diagram of the radiation component and the feeding bracket;

[0021] Figure 3 is an exploded schematic diagram of the radiation component;

[0022] Figure 4 It is a schematic diagram of the structure of the antenna unit feeding component;

[0023] Figure 5 A layout diagram of the feeding circuit for the antenna unit;

[0024] Figure 6 It is the horizontal layout diagram and the elevation layout diagram of the antenna array;

[0025] Figure 7 It is a three-dimensional field diagram of a four-layer antenna array;

[0026] Figure 8 is the horizontal field pattern of the antenna array;

[0027] Fig. 9 It is the vertical directivity diagram of the four-layer antenna array.

[0028] Fig.10 An impedance diagram of a multi-channel television signal-FM signal common antenna unit provided by the present invention;

[0029] Fig.11 This is the impedance diagram of the existing thin cylindrical dipole antenna. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Example 1

[0033] This embodiment provides a multi-channel television signal-FM signal shared antenna unit, the structure of which is as follows: Figure 1 As shown, it includes a radiation component 200, a feeding component 300 and a reflection component 100, and the radiation component 200 and the feeding component 300 are both arranged on the reflection net 120 of the reflection component 100. The radiation component 200 includes a radiation component 210 for emitting electromagnetic waves. The radiation component 200 includes a first vibrator member 211 and a second vibrator member 212 arranged in different directions, and one end of the first vibrator member 211 and the second vibrator member 212 are connected. The feeding component 300 includes a feeding bracket 310 connected to the radiation component 210, and a feeding circuit 320 is arranged in the feeding bracket 310, and the feeding circuit 320 transmits an electrical signal to the radiation component 210. The radiation component 210 converts the received electrical signal into an electromagnetic wave and radiates it outward.

[0034] The radiation component 200 in this embodiment forms a certain projection area above the reflection net 120 by setting the vibrator parts in two directions. Compared with the thin straight rod-shaped vibrator used in the prior art, the radiation component 210 in this embodiment greatly broadens the impedance bandwidth of the antenna, so that the antenna can be compatible with 4-channel or 3-channel TV signals and FM radio signals, thereby realizing the function of the same antenna being able to transmit TV signals and FM signals at the same time, which can effectively reduce the use of antennas in the construction of signal transmitting equipment, and make effective use of the area of ​​the tower mast 400 that is about to be used up, effectively utilizing the tower mast 400 space and reducing construction costs.

[0035] Example 2

[0036] The present embodiment provides a multi-channel television signal-FM signal shared antenna unit, including a radiation component 200, a feeding component 300 and a reflective component 100, wherein the radiation component 200 and the feeding component 300 are both arranged on the reflective net 120 of the reflective component 100. The radiation component 200 includes a radiation assembly 210 for emitting electromagnetic waves. The radiation component 200 includes a first vibrator member 211 and a second vibrator member 212 arranged in different directions, and one end of the first vibrator member 211 and the second vibrator member 212 are connected. The feeding component 300 includes a feeding bracket 310 connected to the radiation assembly 210, and a feeding circuit 320 is arranged in the feeding bracket 310, and the feeding circuit 320 transmits an electrical signal to the radiation assembly 210. The radiation assembly 210 converts the received electrical signal into an electromagnetic wave and emits it outward.

[0037] like Figure 1 and Figure 2 As shown, in this embodiment, the first vibrator component 211 and the second vibrator component 212 are both connected to the feeding bracket 310, and the three together form a triangular radiation area, wherein the first vibrator component 211 and the feeding bracket 310 are vertically connected, and the two ends of the second vibrator component 212 are fixedly connected to the first vibrator component 211 and the feeding bracket 310 respectively. Figure 1 As shown, the feeding bracket 310 is arranged obliquely to the reflecting surface of the reflecting net 120, so that the first dipole component 211, the second dipole component 212 and the feeding bracket 310 form a triangle, which changes the current distribution of the original thin straight dipole, improves its frequency response, and thus increases the impedance bandwidth of the antenna. And the second dipole component 212, as a diagonal brace between the feeding bracket 310 and the first dipole component 211, also has the function of strengthening the antenna structure. This allows the antenna to be used in a severely iced environment.

[0038] like Figure 3 As shown, the first dipole element 211 in this embodiment includes two first dipole arms 211a, and the two first dipole arms 211a are sealed and connected by a polytetrafluoroethylene insulating seal (211b). The total length of the first dipole element 211 is approximately equal to half the wavelength of the center frequency. At the same time, the second dipole element 212 includes a pair of second dipole arms 212a, and the two second dipole arms 212a are symmetrically arranged and respectively connected between each first dipole arm 211a and the feeding bracket 310, so that a stable triangular structure can be formed between the two first dipole arms 211a and the feeding bracket 310, thereby increasing the impedance bandwidth of the antenna and also increasing the strength of the antenna. Figure 3As shown, the first vibrator arm 211a in this embodiment is a cylindrical hollow tube, the second vibrator member 212 can be a square column or a cylindrical hollow tube, or a metal strip, and the vibrator member and the reflective net 120 are made of 304 stainless steel (wall thickness 2mm). When installing the polytetrafluoroethylene insulating seal 211b, a vulcanized sealing ring is placed in the vibrator arm joint, and waterproof thread glue is injected into the polytetrafluoroethylene insulating seal 211b, and the waterproof outdoor self-adhesive butyl tape is wrapped outside, and finally the adhesive heat shrink sleeve is used for heat shrink.

[0039] like Figure 1 and Figure 4 As shown, one end of the feeding bracket 310 in this embodiment is an output end 321, which is connected to the middle of the first oscillator 211, and the other end is connected to the electric signal source. The feeding bracket 310 is arranged to be inclined to the reflective surface of the reflective net 120, and the inclination angle can be 45 degrees, 60 degrees, etc., which makes the distance between the radiation component 210 and the reflective net 120 about a quarter wavelength.

[0040] like Figure 1 and Figure 4 As shown, the radiation component 200 in this embodiment includes two groups of symmetrically arranged radiation components 210, each group of radiation components 210 is connected to a feeding bracket 310, and one end of the two feeding brackets 310 intersects and connects together to form a V-shaped feeding circuit 320, and a power division point 322 of the feeding circuit 320 is formed at the intersection, and a feeding interface 323 is provided at the power division point 322. The distance between the two groups of radiation components 210 is about half a wavelength, and the direction of the first oscillator component 211 is parallel to the reflection surface of the reflection network 120.

[0041] like Figure 5 As shown, the feeding bracket 310 in this embodiment is a square rigid coaxial line. Since the two first dipole arms 211a of the first dipole component 211 are symmetrically arranged, each feeding bracket 310 includes two parallel square tubes, one of which is a square rigid coaxial line connected to the electrical signal source, and the other square tube serves as an auxiliary support to maintain the stability of the radiation component 210. The square tube of the square rigid coaxial line is an outer conductor 311, and an inner conductor 312 is arranged inside the outer conductor 311. The inner conductor 312 is fixed inside the outer conductor 311 by a polytetrafluoroethylene insulating support 313. The outer conductor 311 is fixedly connected to the outer shell of the first dipole component 211, and the inner conductor 312 extends from the output end 321 and enters the interior of the first dipole component 211 to form an open circuit compensation capacitor. In order to adapt to the external environment of condensation and ice, the outer conductor 311 in this embodiment is made of stainless steel, the inner conductor 312 is copper-plated with silver, and the reflective component 100 is made of stainless steel or A3 steel hot-dip galvanized. The feeding component 300 and the radiation component 200 are connected by welding, and the feeding component 300 and the reflection component 100 are fixedly connected by a mounting bracket.

[0042] The use of a square rigid coaxial line as the feeding bracket 310 can conveniently integrate the supporting structure of the feeding circuit 320 and the radiation component 210, which not only meets the requirement of a stable antenna installation structure, but also utilizes the rigid coaxial line's low standing wave ratio characteristic under high-power operation, making it capable of high-power transmission of television signals and FM signals.

[0043] Example 3

[0044] This embodiment provides a multi-channel television signal-FM signal shared antenna array, which includes several antenna units in Embodiment 2, such as Figure 6 As shown, the antenna array has several layers, each layer of the antenna array includes four antenna units, the four antenna units are distributed in a horizontal plane at 90 degrees around a center point, and the directions of the electromagnetic field vectors of the radiated electromagnetic waves of adjacent antenna units are perpendicular.

[0045] Specifically, the antenna array in this embodiment has 4 layers, each layer has 4 antenna units, and each antenna unit uses Figure 1 The mounting members 111 shown in FIG. 1 are fixedly arranged on the four sides of the tower mast 400, and the arrangement direction of the first oscillator member 211 in the radiation assembly 210 is at an angle of positive 45 degrees or negative 45 degrees to the ground, thereby forming a Figure 6 The adjacent antenna units shown in the figure are arranged alternately at positive 45 degrees and negative 45 degrees. The alternating arrangement of antenna units in four directions makes the electromagnetic wave vectors radiated by adjacent units orthogonal in the horizontal plane, finally forming the following Figure 7 The three-dimensional field shape shown.

[0046] Depend on Figure 7 It can be seen that the electromagnetic wave field is distributed evenly in space. Figure 8 From the horizontal directivity diagram, we can see that the field shape is very uniform, without large depressions in certain directions. Fig. 9 As can be seen from the vertical directivity diagram in the figure, the electromagnetic wave field is also ideally distributed in the vertical space, and there will be no large signal blank areas.

[0047] Example 4

[0048] In this embodiment, the multi-channel television signal-FM signal common antenna unit in Embodiment 2 is used to compare the impedance test of the existing cylindrical dipole antenna under the same conditions, and the following results are obtained: Fig.10 and Fig.11 The impedance diagram is shown. Fig.10 and Fig.11It can be clearly seen that the impedance of the existing thin cylindrical dipole antenna is relatively divergent, while the impedance of the triangular dipole in this embodiment is relatively concentrated, so that the antenna unit in this embodiment has a larger impedance bandwidth, which can make 4-channel or 3-channel television compatible with FM radio.

[0049] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0050] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0051] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A multi-channel television signal-FM signal shared antenna unit, characterized in that: include, A radiation component (200) comprising at least one group of radiation components (210), wherein the radiation components (210) comprise a first vibrator component (211) and a second vibrator component (212) arranged along different directions, and one end of the first vibrator component (211) and the second vibrator component (212) are connected; A feeding component (300) comprising a feeding bracket (310) connected to the radiating component (210), wherein a feeding circuit (320) is provided in the feeding bracket (310), and wherein the feeding circuit (320) transmits an electrical signal to the radiating component (210); The first vibrator component (211) and the second vibrator component (212) are both connected to the feeding bracket (310), and the three together form a triangular radiation area, the first vibrator component (211) and the feeding bracket (310) are vertically connected, and two ends of the second vibrator component (212) are respectively fixedly connected to the first vibrator component (211) and the feeding bracket (310); The feeding bracket (310) is arranged to be inclined relative to the reflection surface of the reflection net (120), with the inclination angle being 45 degrees or 60 degrees, so that the distance between the radiation component (210) and the reflection net (120) is approximately one quarter of a wavelength; The first vibrator component (211) comprises two first vibrator arms (211a), the two first vibrator arms (211a) are sealed and connected via a polytetrafluoroethylene insulating seal (211b), the total length of the first vibrator component (211) is approximately equal to half the wavelength of the center frequency, and the second vibrator component (212) comprises a pair of second vibrator arms (212a), the two second vibrator arms (212a) are symmetrically arranged and respectively connected between each first vibrator arm (211a) and a feeding bracket (310), so that a stable triangular structure can be formed between the two first vibrator arms (211a) and the feeding bracket (310).

2. The multi-channel television signal-FM signal shared antenna unit according to claim 1, characterized in that: The first vibrator arm (211a) is a cylindrical hollow tube, and the second vibrator element (212) is a square column or cylindrical hollow tube or a metal strip.

3. The multi-channel television signal-FM signal shared antenna unit according to claim 1 or 2, characterized in that: One end of the feeding bracket (310) is an output end (321) connected to the middle of the first vibrator component (211), and the other end is connected to an electric signal source.

4. The multi-channel television signal-FM signal shared antenna unit according to claim 3, characterized in that: The feeding bracket (310) is a square rigid coaxial line, wherein the square tube is an outer conductor (311), an inner conductor (312) is provided inside the outer conductor (311), and the inner conductor (312) is fixed inside the outer conductor (311) by means of an insulating support (313); the outer conductor (311) is fixedly connected to the outer shell of the first vibrator component (211), and the inner conductor (312) extends from the output end (321) and enters the interior of the first vibrator component (211) to form an open circuit compensation capacitor.

5. The multi-channel television signal-FM signal shared antenna unit according to any one of claims 1, 2 and 4, characterized in that: The radiation component (200) comprises two groups of symmetrically arranged radiation components (210), each group of radiation components (210) is connected to a feeding bracket (310), one end of the two feeding brackets (310) are intersected and connected together to form a power distribution point (322) of the feeding circuit (320), and a feeding interface (323) is provided at the power distribution point (322).

6. A multi-channel television signal-frequency modulation signal shared antenna array, comprising a plurality of antenna units as described in any one of claims 1, 2 and 4, the antenna array having a plurality of layers, each layer of the antenna array comprising four of the antenna units, the four antenna units being distributed in a horizontal plane at 90 degrees to each other around a center point, and the directions of the electromagnetic field vectors of the radiated electromagnetic waves of adjacent antenna units being perpendicular.

7. The multi-channel television signal-FM signal shared antenna array according to claim 6, characterized in that: The arrangement direction of the first oscillator element (211) in the antenna unit forms an angle of positive 45 degrees or negative 45 degrees with the ground.

Images