CN113745828A - Novel dual-polarization digital television antenna - Google Patents
Novel dual-polarization digital television antenna Download PDFInfo
- Publication number
- CN113745828A CN113745828A CN202111134812.1A CN202111134812A CN113745828A CN 113745828 A CN113745828 A CN 113745828A CN 202111134812 A CN202111134812 A CN 202111134812A CN 113745828 A CN113745828 A CN 113745828A
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- China
- Prior art keywords
- matching module
- antenna
- antenna oscillator
- inductor
- digital television
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a novel dual-polarized digital television antenna, which comprises a mounting plate, wherein a first antenna oscillator, a second antenna oscillator and a third antenna oscillator and a fourth antenna oscillator are arranged on the mounting plate, the first antenna oscillator and the second antenna oscillator are symmetrically arranged around a central point in the horizontal direction, the third antenna oscillator and the fourth antenna oscillator are symmetrically arranged around the central point in the vertical direction, the first antenna oscillator, the second antenna oscillator, the third antenna oscillator and the fourth antenna oscillator comprise an arc line segment, a first straight line segment and a second straight line segment which are jointly enclosed to form a fan blade shape, and a connection point of the first straight line segment and the second straight line segment is used as an output end; the PCB is provided with a first matching module, a second matching module, a third matching module and a fourth matching module which are connected with the first antenna oscillator, the second antenna oscillator, the third antenna oscillator and the fourth antenna oscillator, single-port output formed by the first matching module and the second matching module is connected with single-port output formed by the third matching module and the fourth matching module in parallel, and then signal output is carried out through a fifth matching module; by the structure, the same efficiency can be achieved when vertical and horizontal polarized signals are received, the polarization loss is reduced to the minimum, and the gain after the two groups of antennas are combined is enhanced to a certain extent.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a novel dual-polarized digital television antenna.
Background
The antenna oscillator transmits the received air weak electromagnetic waves to the receiving and transmitting equipment through the coaxial cable for processing. The signal transmission is divided into a vertical polarization mode and a horizontal polarization mode, the receiving and transmitting antenna is also divided into a vertical polarization mode and a horizontal polarization mode, and the efficiency of receiving signals can be maximized only if the polarization modes of the signals and the antennas are consistent.
Most of the existing antennas in the market have single polarization, and two polarization modes of the antennas are respectively set by horizontally or vertically installing the antennas, but only one polarization mode can be used simultaneously, so that one antenna cannot simultaneously receive and transmit signals of the two polarization modes, and the receiving and transmitting performance of equipment is reduced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a novel dual-polarized digital television antenna.
The technical scheme adopted by the embodiment of the invention for solving the technical problem is as follows: a novel dual-polarized digital television antenna comprises:
the antenna comprises a mounting plate, a first antenna element, a second antenna element, a third antenna element, a fourth antenna element, a first straight line segment, a second straight line segment and a fourth straight line segment, wherein the first antenna element and the second antenna element are symmetrically arranged around a center point in the horizontal direction, and the third antenna element and the fourth antenna element are symmetrically arranged around the center point in the vertical direction;
the PCB is provided with a first matching module connected with the first antenna oscillator, a second matching module connected with the second antenna oscillator, a third matching module connected with the third antenna oscillator and a fourth matching module connected with the fourth antenna oscillator, single-port output formed by the first matching module and the second matching module is connected with single-port output formed by the third matching module and the fourth matching module in parallel, and the output end after the parallel connection carries out signal output through the fifth matching module.
Further, the first matching module comprises a capacitor C1 and an inductor L1, one end of the capacitor C1 is connected to the output end of the first antenna oscillator, the other end of the capacitor C1 is connected to one end of the inductor L1 and the second, third, fourth and fifth matching modules, respectively, and the other end of the inductor L1 is grounded.
Further, the fifth matching module includes a capacitor C5 and an inductor L5-6, one end of the capacitor C5 is connected to one end of the inductor L5 and the output ends of the first, second, third, and fourth matching modules, the other end of the capacitor C5 is connected to one end of the inductor L6 and an external device, the other end of the inductor L5 and the other end of the inductor L6 are grounded, and the fifth matching module can match the impedance after parallel connection to 75 Ω and output the impedance.
Furthermore, the novel dual-polarized digital television antenna further comprises a front cover and a rear cover, the mounting plate is connected between the front cover and the rear cover through a connecting structure, and the PCB is arranged in the front cover or the rear cover.
Further, the connection structure is a bolt connection structure, and the bolt is simultaneously connected with the front cover, the mounting plate, the PCB and the rear cover to be combined into a whole.
Further, the fifth matching module outputs a signal through a coaxial cable.
The invention has the beneficial effects that: a novel dual-polarization digital television antenna comprises a mounting plate, wherein a first antenna oscillator and a second antenna oscillator which are symmetrically arranged around a central point in the horizontal direction and a third antenna oscillator and a fourth antenna oscillator which are symmetrically arranged around the central point in the vertical direction are arranged on the mounting plate; the PCB is provided with a first matching module, a second matching module, a third matching module and a fourth matching module which are connected with the first antenna oscillator, the second antenna oscillator, the third antenna oscillator and the fourth antenna oscillator, single-port output formed by the first matching module and the second matching module is connected with single-port output formed by the third matching module and the fourth matching module in parallel, and then signal output is carried out through a fifth matching module; by the structure, the same efficiency can be achieved when vertical and horizontal polarized signals are received, the polarization loss is reduced to the minimum, and the gain after the two groups of antennas are combined is enhanced to a certain extent.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a novel dual-polarized digital television antenna;
fig. 2 is an exploded view of a novel dual polarized digital television antenna;
FIG. 3 is a schematic diagram of an antenna element;
FIG. 4 is a schematic diagram of the circuitry on the PCB board;
fig. 5 is a 0-degree (Phi ═ 0) radiation pattern of a novel dual-polarized digital television antenna in the E plane;
fig. 6 is a 90-degree (Phi-90) radiation pattern of a novel dual-polarized digital television antenna in the E plane;
fig. 7 shows the radiation pattern of a new dual-polarized digital tv antenna in the H plane (Theta 90).
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, a plurality of means is two or more, and greater than, less than, more than, etc. are understood as excluding the present number, and greater than, less than, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does 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 thus, should not be construed as limiting the present invention.
In the present invention, unless explicitly defined otherwise, the terms "disposed," "mounted," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or indirectly connected through an intermediate; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be a mechanical connection; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above-mentioned words in the present invention can be reasonably determined by those skilled in the art in combination with the detailed contents of the technical solutions.
Referring to fig. 1 to 7, a novel dual-polarized digital television antenna includes:
a mounting board 10 on which first and second antenna elements 21, 22 arranged horizontally around a center point and third and fourth antenna elements 23, 24 arranged vertically around a center point are provided, the first, second, third and fourth antenna elements 21, 22, 23, 24 including an arc segment 31, a first straight segment 32 and a second straight segment 33 enclosing together into a fan-blade shape, and a connection point of the first and second straight segments 32, 33 serving as an output end;
the PCB 40 is provided with a first matching module 51 connected with the first antenna oscillator 21, a second matching module 52 connected with the second antenna oscillator 22, a third matching module 53 connected with the third antenna oscillator 23 and a fourth matching module 54 connected with the fourth antenna oscillator 24, single-port output formed by the first and second matching modules 51 and 52 is connected in parallel with single-port output formed by the third and fourth matching modules 53 and 54, and the output end after parallel connection carries out signal output through a fifth matching module 55.
In the invention, the antenna adopts 4 antenna elements, including a first, a second, a third and a fourth antenna elements 21, 22, 23, 24, which are divided into two groups of resonance design modes, wherein the first and the second antenna elements 21, 22 are horizontal polarization signal receiving antenna elements, the third and the fourth antenna elements 23, 24 are vertical polarization signal receiving antenna elements, furthermore, in order to expand the bandwidth of the antenna, the first, the second, the third and the fourth antenna elements 21, 22, 23, 24 are set into a fan-blade shape which is formed by an arc line segment 31, a first straight line segment 32 and a second straight line segment 33 which are enclosed together, the connection point of the first and the second straight line segments 32, 33 is used as an output end, each group of oscillator ports adopts LC balun (balun) to convert a dual-port antenna into a single-port output, namely, the first, the second, the third and the fourth matching modules 51, 52, 53, 54, and the two groups of antennas are connected in parallel after balun conversion, an LC pi-type matching circuit, namely a fifth matching module 55 is added after parallel connection, the fifth matching module 55 can match the combined impedance to 75 omega, and the antenna is prevented from introducing susceptance to influence the performance of the whole antenna.
Referring to table 1, it can be seen that the antenna structure of the present invention has better gain and efficiency at each frequency, and further, referring to fig. 5 to 7, the antenna structure of the present invention has better horizontal polarization and vertical polarization signal receiving effects at each frequency, respectively, for a 0-degree (Phi-0) radiation pattern at the E plane, a 90-degree (Phi-90) radiation pattern at the E plane, and a 90-degree (Theta-90) radiation pattern at the H plane.
TABLE 1
The first matching module 51 includes a capacitor C1 and an inductor L1, one end of the capacitor C1 is connected to the output terminal of the first antenna oscillator 21, the other end of the capacitor C1 is connected to one end of the inductor L1 and the second, third, fourth, and fifth matching modules 52, 53, 54, and 55, respectively, and the other end of the inductor L1 is grounded.
The fifth matching module 55 comprises a capacitor C5 and inductors L5-6, wherein one end of the capacitor C5 is connected with one end of the inductor L5 and the output ends of the first, second, third and fourth matching modules 51, 52, 53 and 54, respectively, the other end of the capacitor C5 is connected with one end of the inductor L6 and external equipment, the other end of the inductor L5 and the other end of the inductor L6 are grounded, and the fifth matching module 55 can match the impedance after parallel connection to 75 Ω and then output the impedance.
The novel dual-polarized digital television antenna further comprises a front cover 61 and a rear cover 62, the mounting plate 10 is connected between the front cover 61 and the rear cover 62 through a connecting structure, and the PCB 40 is arranged in the front cover 61 or the rear cover 62.
The coupling structure is provided as a bolt coupling structure, and the bolt 70 is simultaneously coupled with the front cover 61, the mounting plate 10, the PCB 40, and the rear cover 62 to be integrated.
The fifth matching module 55 outputs a signal through the coaxial cable 70.
It is to be understood that the present invention is not limited to the above-described embodiments, and that equivalent modifications and substitutions may be made by those skilled in the art without departing from the spirit of the present invention, and that such equivalent modifications and substitutions are to be included within the scope of the appended claims.
Claims (6)
1. A novel dual-polarized digital television antenna is characterized by comprising:
the antenna comprises a mounting plate (10), wherein first and second antenna elements (21 and 22) which are symmetrically arranged around a central point in the horizontal direction and third and fourth antenna elements (23 and 24) which are symmetrically arranged around the central point in the vertical direction are arranged on the mounting plate, the first, second, third and fourth antenna elements (21, 22, 23 and 24) comprise arc line sections (31), first straight line sections (32) and second straight line sections (33) which jointly enclose a fan blade shape, and the connection points of the first and second straight line sections (32 and 33) are used as output ends;
the PCB (40) is provided with a first matching module (51) connected with the first antenna oscillator (21), a second matching module (52) connected with the second antenna oscillator (22), a third matching module (53) connected with the third antenna oscillator (23) and a fourth matching module (54) connected with the fourth antenna oscillator (24), single-port output formed by the first matching module (51) and the second matching module (52) is connected with single-port output formed by the third matching module and the fourth matching module (53 and 54) in parallel, and output ends after the parallel connection are used for signal output through a fifth matching module (55).
2. The novel dual polarized digital television antenna according to claim 1, wherein: the first matching module (51) comprises a capacitor C1 and an inductor L1, one end of the capacitor C1 is connected with the output end of the first antenna oscillator (21), the other end of the capacitor C1 is connected with one end of the inductor L1 and the second, third, fourth and fifth matching modules (52, 53, 54 and 55), and the other end of the inductor L1 is grounded.
3. The novel dual polarized digital television antenna according to claim 1, wherein: the fifth matching module (55) comprises a capacitor C5 and an inductor L5-6, one end of the capacitor C5 is connected with one end of the inductor L5 and the output ends of the first, second, third and fourth matching modules (51, 52, 53, 54), the other end of the capacitor C5 is connected with one end of the inductor L6 and external equipment, the other end of the inductor L5 and the other end of the inductor L6 are grounded, and the fifth matching module (55) can match the impedance after parallel connection to 75 omega and then output the impedance.
4. The novel dual polarized digital television antenna according to claim 1, wherein: still include protecgulum (61) and back lid (62), mounting panel (10) pass through connection structure connect in between protecgulum (61) and back lid (62), PCB board (40) set up in protecgulum (61) or back lid (62).
5. The novel dual polarized digital television antenna according to claim 4, wherein: the connecting structure is a bolt connecting structure, and a bolt (70) is simultaneously connected with the front cover (61), the mounting plate (10), the PCB (40) and the rear cover (62) to be combined into a whole.
6. The novel dual polarized digital television antenna according to claim 1, wherein: the fifth matching module (55) outputs signals through a coaxial cable (70).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111134812.1A CN113745828A (en) | 2021-09-27 | 2021-09-27 | Novel dual-polarization digital television antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111134812.1A CN113745828A (en) | 2021-09-27 | 2021-09-27 | Novel dual-polarization digital television antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113745828A true CN113745828A (en) | 2021-12-03 |
Family
ID=78741284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111134812.1A Pending CN113745828A (en) | 2021-09-27 | 2021-09-27 | Novel dual-polarization digital television antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113745828A (en) |
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2021
- 2021-09-27 CN CN202111134812.1A patent/CN113745828A/en active Pending
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