CN2414518Y - Antenna capable of receiving VHF-UHF all channel and cable television signal - Google Patents

Abstract

The utility model relates to a TV antenna capable of receiving VHF-UHF all channel and cable television signals, which mainly designs and produces an antenna active vibrator having the characteristic of wide impedance frequency bands. The active vibrator effectively increases the area of receiving the electromagnetic wave and consequently spreads the width of a working frequency band of a receiving antenna. In the area covered by the electromagnetic wave, the utility model not only receives the frequency signals of TV programs of VHF1-12 channels and the UHF13-56 channels, but also is used for inducing and receiving the program signals of cable TV arranged and used in neighbors' families. The TV image sharpness is obviously enhanced, and the received TV program channels are increased.

Description

Can receive the television antenna of VHF～UHF all-channel and cable TV signal

The utility model relates to a kind ofly can receive VHF1～12 channels, UHF13～56 channel TV program frequencies signals, can be used for responding near the television antenna of cable television program signal receiving again.

In the present prior art, the active dipole of television antenna is to make folded dipole or basic half-wave dipole, for example common multiple unit folded dipole antenna etc. with aluminum pipe or copper pipe basically.Though it is simple and convenient that this antenna is manufactured processing, but nearly 40～60 megahertzes of the working band width of folded dipole antenna, it only adapts to the program frequencies signal that receives several television channels, and why this this for a long time just antenna of manufacturing with aluminum pipe or copper pipe receives one of few reason of platform.Owing to there is such shortcoming, this antenna never is applied in the reception of all-channel.

The purpose of this utility model provides and a kind ofly can either receive VHF～UHF full frequency channel TV program frequency signal, can be used for responding near the television antenna of the cable television program signal receiving again.

For achieving the above object, the utility model design and manufacture a kind of antenna active dipole of wide impedance frequency bandwidth characteristics, it is to adopt the measure that strengthens antenna active dipole conductor diameter, the identical circular flat of two diameters or the metal book plate of concave surface are arranged placement symmetrically, be fixed on and form the antenna active dipole on good bakelite plate of a high-frequency insulation performance or the plastics cross bar.The distributing point of the mutually nearest edge of two oscillators as active dipole.At the distributing point connection electronic component of active dipole with draw feeder line down, install the feeder line plug at the end of feeder line, and plug is inserted the jack of television set.This antenna erect be fixed on indoor or outdoors, just can be with its received television program frequency signal.

The utility model is because only need form the metal book plate symmetric arrays of the circular flat of two same diameter and area or concave surface the active dipole of antenna, increased very effectively and received electromagnetic area, thereby broadening the width of reception antenna working band, the TV image definition is obviously improved, and receipts platform number is increased to some extent.It can not only well receive the TV programme of VHF band 1～12 channel, and for the TV programme that a variety of antenna product did not for a long time all receive or received unsharp super high band UHF13～56 channels also can watch very clearly, satisfied, particularly can also respond near many programme signals that cable TV station broadcasts receiving, make the channel of TV program watching more.

The concrete structure of utility model is provided by following embodiment and accompanying drawing thereof.

Fig. 1 is the structural representation according to the television antenna that can receive VHF～UHF all-channel and cable TV signal that the utility model proposes.

Describe details and working condition in detail below in conjunction with Fig. 1 according to the concrete device that the utility model proposes.

This device comprises the active dipole (1) that two symmetrical circular planes or concave surface metal book plate are made, and a T-shape support (3) is to be connected and fixed by a plastic three-way (11) by the plastics cross bar (4) of two equal lengths and a plastics montant (5) to form.Active dipole (1) is fixed on the two ends of the cross bar (4) of "T"-shaped support respectively with screw (2).A wire binding post (7) is respectively arranged as distributing point respectively on two active dipoles (1).On the montant (5) of "T"-shaped support, be provided with a terminal box (6), in terminal box (6), install and be connected with electronic component (not drawing among the figure) and draw feeder line (9), feeder line (9) is with 75 Europe-5 type coaxial cable, and the electronic component in the wire binding post (7) of active dipole (1) and the terminal box (6) is to interconnect (not drawing among the figure) by two leads (8) respectively.End installation at feeder line (9) is connecting feeder line plug (10).Upright the montant of the "T"-shaped support of this antenna (5), active dipole (1) towards TV station's direction, is inserted the antenna jack of television set to feeder line plug (10), electromagnetic wave can cover regional in can watch VHF～UHF all-channel TV programme.If there is the user who installs and uses cable TV at tens meters near receiving ground, these use the television set in cable TV signal source can produce local oscillation signal and leak, the signal that local oscillation signal leaks or the user terminal terminal box is leaked gratis provides the source that receives the cable television program signal to the utility model, through repeatedly acceptance test television image and sound accompaniment are all very steady and audible, color is pure, no ghost image, " snow " is also considerably less, makes the television channel program of watching can increase many.When outdoor application,, also can will be processed into several ventilation holes on the active dipole (1), to reduce the resistance (not drawing among the figure) of wind in order to consider the wind resistance problem.

Claims (2)

1, a kind of television antenna that can receive VHF～UHF all-channel and cable TV signal, it comprises: the active dipole of two symmetries (1), T-shape support (3), terminal box (6), feeder line (9) and feeder line plug (10), it is characterized in that: the metal book plate symmetric arrays of the circular flat of two same diameters or concave surface is placed the active dipole (1) of forming antenna, use active dipole (1) fixed screw (2) symmetry to be fixed on cross bar (4) two ends of T-shape support (3) respectively, the montant (5) of T-shape support (3) is provided with terminal box (6), described active dipole (1) is provided with binding post (7), the input of terminal box (6) internal electronics is communicated with the binding post (7) of active dipole (1), connect and draw feeder line (9) at the internal electronics output of terminal box (6), be connected and installed with feeder line plug (10) at feeder line (9) end.

2, device according to claim 1 is characterized in that: T-shape support (3) is to be assembled by a plastic three-way (11) by the plastics cross bar (4) of two equal lengths and a plastics montant (5).

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