CN211150785U

CN211150785U - DTMB antenna

Info

Publication number: CN211150785U
Application number: CN201921326426.0U
Authority: CN
Inventors: 陈建
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2020-07-31
Anticipated expiration: 2029-08-15

Abstract

The utility model provides a DTMB antenna, include: the antenna comprises a first antenna main body, a second antenna main body, a first coaxial cable, a second coaxial cable, a third coaxial cable, a single-pole double-throw switch and a TV male head; the first antenna main body is horizontally arranged; the second antenna body is vertically mounted; one end of the first coaxial cable is electrically connected with the first antenna main body, and the other end of the first coaxial cable is electrically connected with a fixed end of the single-pole double-throw switch; one end of the second coaxial cable is electrically connected with the second antenna main body, and the other end of the second coaxial cable is electrically connected with the other fixed end of the single-pole double-throw switch; one end of the third coaxial cable is electrically connected with the movable end of the single-pole double-throw switch, and the other end of the third coaxial cable is electrically connected with the TV male connector. The DTMB antenna can perfectly receive programs with horizontal polarization and vertical polarization, and user experience is good.

Description

DTMB antenna

Technical Field

The utility model belongs to the technical field of the antenna, especially, relate to the DTMB antenna.

Background

In recent years, ground wave digital televisions have been rapidly developed, and many cities have opened a centre view, provinces, cities, counties and the like. And the opened digital signal program adopts both horizontal polarization and vertical polarization. The antenna provided at present can not effectively receive all programs, so that the number of television programs which can be watched by a user is small, and the user experience is poor.

SUMMERY OF THE UTILITY MODEL

In view of this, embodiments of the present invention provide a DTMB antenna to solve the deficiencies of the prior art.

The embodiment of the utility model provides a DTMB antenna, include: the antenna comprises a first antenna main body, a second antenna main body, a first coaxial cable, a second coaxial cable, a third coaxial cable, a single-pole double-throw switch and a TV male head; the first antenna main body is horizontally arranged; the second antenna body is vertically mounted; one end of the first coaxial cable is electrically connected with the first antenna main body, and the other end of the first coaxial cable is electrically connected with a fixed end of the single-pole double-throw switch; one end of the second coaxial cable is electrically connected with the second antenna main body, and the other end of the second coaxial cable is electrically connected with the other fixed end of the single-pole double-throw switch; one end of the third coaxial cable is electrically connected with the movable end of the single-pole double-throw switch, and the other end of the third coaxial cable is electrically connected with the TV male connector.

Further, the first antenna body and the second antenna body each include: the device comprises a main rod, a receiving unit, a signal box, a reflector unit and a fixed mounting component, wherein the receiving unit, the signal box, the reflector unit and the fixed mounting component are sequentially mounted on the main rod; the receiving unit is used for receiving ground wave signals; the reflector unit is used for reflecting ground wave signals; the signal box is used for amplifying the ground wave signals collected by the receiving unit and the reflector unit; the fixed mounting component is used for fixedly mounting the antenna main body on the vertical rod.

Further, the main rod is an aluminum pipe with a square cross section.

Further, the number of the receiving units is 7, and each receiving unit is an aluminum round pipe.

Further, the 7 receiving units are distributed at equal intervals.

Further, the receiving frequency ranges of the first antenna body and the second antenna body are 470-800 MHz.

The utility model provides a DTMB antenna can perfectly realize receiving horizontal polarization and vertical polarization's program through the single-pole double-throw switch, and the ground wave program that the user can watch is abundanter, and user experience degree is good.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a DTMB antenna according to an embodiment of the present invention;

fig. 2 is a perspective view of an antenna main body according to an embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the DTMB antenna will be described more fully with reference to the related drawings. A preferred embodiment of the DTMB antenna is given in the drawing. However, the DTMB antenna may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure of the DTMB antenna is more thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the real-time display augmented reality smart glasses is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functionality throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1, an embodiment of the present invention provides a DTMB antenna, including: a first antenna body 1, a second antenna body 2, a first coaxial cable 3, a second coaxial cable 4, a third coaxial cable 6, a single pole double throw switch 5, and a TV male 7.

The first antenna body 1 is horizontally installed for receiving a horizontally polarized program; the second antenna body 2 is vertically installed for receiving a program of vertical polarization; one end of a first coaxial cable 3 is electrically connected with the first antenna main body 1, and the other end of the first coaxial cable 3 is electrically connected with a fixed end of the single-pole double-throw switch 5; one end of a second coaxial cable 4 is electrically connected with the second antenna main body 2, and the other end of the second coaxial cable 4 is electrically connected with the other fixed end of the single-pole double-throw switch 5; one end of a third coaxial cable 6 is electrically connected with the moving end of the single-pole double-throw switch 5, and the other end of the third coaxial cable 6 is electrically connected with a TV male head 7. The shielding layer of the first coaxial cable 3, the shielding layer of the second coaxial cable 4 and the shielding layer of the third coaxial cable 6 are connected together; the copper core of the first coaxial cable 3 is electrically connected with one fixed end of the single-pole double-throw switch 5, the copper core of the second coaxial cable 4 is electrically connected with the other fixed end of the single-pole double-throw switch 5, and the copper core of the third coaxial cable 6 is electrically connected with the movable end of the single-pole double-throw switch 5.

As shown in fig. 2, each of the first antenna body 1 and the second antenna body 2 includes: a main rod 15, and a receiving unit 11, a signal box 12, a reflector unit 13, and a fixed mounting part 14, which are sequentially mounted on the main rod 15; the receiving unit 11 is configured to receive a ground wave signal; the reflector unit 13 is used for reflecting ground wave signals; the signal box 12 is used for amplifying the ground wave signals collected by the receiving unit 11 and the reflector unit 13; the fixed mounting part 14 is used to fixedly mount the antenna body to the vertical rod. The signal box 12 is electrically connected to the coaxial cable. The main rod 15 is an aluminum pipe having a square cross section. The number of the receiving units 11 is 7, and each receiving unit 11 is an aluminum circular tube. The 7 receiving units 11 are distributed at equal intervals. The reflector unit 13 is also a circular tube made of aluminum. The length of the reflector unit 13 is longer than that of the receiving unit 11. The reflector unit 13 and the receiving unit 11 are both held perpendicular to the main rod 15. When the receiving unit 11 is parallel to the horizontal plane, the antenna body is horizontally installed as shown in fig. 2. When the receiving unit 11 is perpendicular to the horizontal plane, the antenna body is vertically mounted. The main rod 15 is provided with mounting holes, and the receiving unit 11, the signal box 12, the reflector unit 13, and the fixed mounting part 14 can be mounted to the main rod 15 by means of screw nuts.

The receiving frequency ranges of the first antenna body 1 and the second antenna body 2 are 470-800 MHz. At present, the frequency bands of all terrestrial television programs in China are in the above range.

When the television is used, a user inserts the TV male head 7 into a digital ground wave input port of a television, the user throws the single-pole double-throw switch 5 to one end, the user can stably receive horizontal polarization programs, and when the user throws the single-pole double-throw switch 5 to the other end, the user can stably receive vertical horizontal polarization programs. Thus, the user can watch the digital electronic program with horizontal polarization and vertical polarization simultaneously. The experience of the user is good.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A DTMB antenna, comprising: the antenna comprises a first antenna main body, a second antenna main body, a first coaxial cable, a second coaxial cable, a third coaxial cable, a single-pole double-throw switch and a TV male head; the first antenna main body is horizontally arranged; the second antenna body is vertically mounted; one end of the first coaxial cable is electrically connected with the first antenna main body, and the other end of the first coaxial cable is electrically connected with a fixed end of the single-pole double-throw switch; one end of the second coaxial cable is electrically connected with the second antenna main body, and the other end of the second coaxial cable is electrically connected with the other fixed end of the single-pole double-throw switch; one end of the third coaxial cable is electrically connected with the movable end of the single-pole double-throw switch, and the other end of the third coaxial cable is electrically connected with the TV male connector.

2. The DTMB antenna of claim 1, wherein the first antenna body and the second antenna body each comprise: the device comprises a main rod, a receiving unit, a signal box, a reflector unit and a fixed mounting component, wherein the receiving unit, the signal box, the reflector unit and the fixed mounting component are sequentially mounted on the main rod; the receiving unit is used for receiving ground wave signals; the reflector unit is used for reflecting ground wave signals; the signal box is used for amplifying the ground wave signals collected by the receiving unit and the reflector unit; the fixed mounting component is used for fixedly mounting the antenna main body on the vertical rod.

3. The DTMB antenna of claim 2, wherein the main rod is an aluminum tube having a square cross-section.

4. The DTMB antenna of claim 2, wherein the number of the receiving units is 7, and each receiving unit is an aluminum circular tube.

5. The DTMB antenna of claim 4, wherein the 7 receiving units are equally spaced.

6. The DTMB antenna as claimed in claim 1, wherein the receiving frequency ranges of the first antenna body and the second antenna body are 470-800 MHz.