CN2413399Y - TV receiving antenna - Google Patents

Abstract

The utility model comprises reflectors, directors, active dipoles and a bracket, and is characterized in that a star-shaped reflector or director is respectively and vertically arranged between one reflector and one active dipole, one active dipole and one adjacent director, and two adjacent directors. Thus, vertical polarization signals or / and various interference signals between vertical polarization and horizontal polarization are eliminated; the interference rejection and the directivity of a TV receiving antenna are enhanced; the watching effect of TV programs is raised.

Description

Sharp direction television receiving antenna

The utility model belongs to radiovision and passes the receipts technical field, is a kind of jamproof sharp direction television receiving antenna.

Along with the develop rapidly of radio and television services, various places TV station rapidly increases, and occurs the situation of a plurality of TV stations of channel sometimes, so that each TV station's signal phase mutual interference, and influence is watched.The natural forms that other is tall and big as high mountain, forest and culture, all can make TV signal form repeatedly reflection or refraction as high building, aircraft etc., causes the serious ghost image of TV image.In addition, the pollution that also has a large amount of industrial electro magnetic waves to bring, these are all having a strong impact on people's TV watching quality.And everything is for be installed in the traditional antenna that linear reflector, director and active dipole on the antenna holder constitute by parallel and level, is difficult to effectively solve.

The purpose of this utility model is to solve traditional antenna to be difficult to the watching quality problem that effectively solves, intends providing the television receiving antenna of the strong and good directionality of a kind of antijamming capability.

The purpose of this utility model is reached by following technical proposal.

The television receiving antenna that the technical program is showed comprises reflector, director, active dipole and support.The reflector level is connected in support one end, director and is one or more, and level is connected in the support another side in parallel to each other, and active dipole then level is connected on the support between reflector and the director.Between reflector and active dipole, be provided with one and be vertically mounted on the support, be " " reflector of shape, between active dipole and the adjacent director and then be provided with one respectively between each two adjacent director and also be vertically mounted on the support, be "

" director of shape.

Since the utility model between each unit oscillator of traditional tv reception antenna, be provided with vertically arranged "

The shape oscillator, thereby under the effect of electromagnetic wave phase differences, they just make various various interference signals vertical and between the vertical and horizontal polarization cancel out each other in the position of active dipole, thus strengthened the antijamming capability and the directivity of antenna.Improved the watching quality of TV programme.

Accompanying drawing is a kind of perspective view of the present utility model.

Also the utility model is described in further detail to provide embodiment below in conjunction with accompanying drawing.

Embodiment:

As shown in drawings, the sharp direction television receiving antenna that present embodiment provided by reflector 1, director 2, active dipole 3, support 4, "

" shape reflector 5 and "

" shape director 6 formations.

Reflector 1 present embodiment is the linear reflector, and level is connected in support 4 one ends.Director 2 is one or more, and present embodiment is three, and shape linearly, and level is connected in support 4 another sides in parallel to each other.3 levels of active dipole are connected on the support 4 between reflector 1 and the director 2.For the horizontal polarization signal, induced electricity magnetic wave and TV station that reflector 1 and director 2 produce directly launch next electromagnetic wave at active dipole 3 places.Its phase place is just in time identical, so this signal strength signal intensity is enhanced.But since the antenna of this structure to the perpendicular polarization signal or/and the various interference signals between perpendicular polarization and horizontal polarization can't be eliminated, the utility model is provided with one again and is vertically mounted on the support 4 between reflector 1 and active dipole 3, be " " shape reflector 5 and be provided with one respectively and also be vertically mounted on the support 4 between active dipole 3 and the adjacent director 2 and between each two adjacent director 2, be "

" director 6 of shape.Owing to be "

" reflector 5 of shape is just in time opposite in active dipole place phase place with various interference signals with the induced electricity magnetic wave that director 6 is produced, so being cancelled, these interference signals attenuated.

When the wavelength of considering interference signal equates with the programme signal wavelength that TV station sends, bigger to the television reception quality influence, so in the utility model "

" reflector 5 of shape and director 6 its length should with the equal in length of corresponding each oscillator (being adjacent reflector 1 or director 3).In addition because "

" when the reflector 5 of shape and the width of director 6 are excessive, cause decay to the programme signal that TV station sends, influence the gain of antenna, so its width is answered $<\frac{1}{4}\mathrm{\&lambda;}$ 。

Structure of the present utility model is not limited to the embodiment that provides.

Claims (2)

1. sharp direction television receiving antenna, comprise reflector (1), director (2), active dipole (3) and support (4), reflector (1) level is connected in support (4) one ends, director (2) is one or more, and level is connected in support (4) another side in parallel to each other, active dipole (3) then level is connected on the support (4) between reflector (1) and the director (2), it is characterized in that between reflector (1) and active dipole (3), being provided with one and be vertically mounted on being on the support " " reflector (5) of shape; Between active dipole (3) and the adjacent director (2) and between each two adjacent director (2), then be provided with one respectively and also be vertically mounted on the support, be " " director (6) of shape.

2. sharp direction television receiving antenna according to claim 1, it is characterized in that " " reflector (5) of shape and its length of director (6) equates with corresponding each oscillator length, its width＜ $\frac{1}{4}\mathrm{\&lambda;}$ 。