CN2285008Y - TV antenna - Google Patents

Abstract

The utility model relates to a TV antenna. Three double-ring vibrators 1, 2 and 3 are at evenly arranged on the circumference with a central angle of 360 DEG. Two long folding vibrators 4 and 7 are perpendicular to each other. Two short folding vibrators 5 and 6 are perpendicular to each other. The two long folding vibrators 4, 7 and the two short folding vibrators 5, 6 are respectively connected with matching circuits 10, 8, 9, adder circuits 11, 12, band-pass filter circuit 14, 13, 24, a rectifying and filtering circuit 15 of an amplifier, a TV signal input-output circuit 17 and a power circuit 16. With high sensitivity, TV programs of channels 13 to 68, channels 1 to 5 and channels 6 to 12 can be clearly received by a TV through the antenna.

Description

Television antenna

The utility model relates to the television antenna technical field.

Mostly existing comprehensive television antenna is a frequency range one deck, utilize the transposer coupling to obtain signal, reach and receive multidirectional signal, the amplifier cascade does not add filter circuit, owing to there are these deficiencies, when using this antenna, the signal of television reception has out-of-band interference, makes image blurring, because this antenna oscillator design and layout are unreasonable, can not comprehensively receive television signals, sensitivity is not high, and making TV self-excitation occur sometimes can't normally watch.

The purpose of this utility model provides the comprehensive high sensitivity received television signal of a kind of energy, interference-free television antenna between the bands of television signals of reception.

The utility model is achieved in that 8 font oscillators (1), (2) and (3) evenly distribute on 360 ° of circumference, after its wiring is connected in parallel, to become 75 Ω adaptations (10) in parallel with 75 Ω, series connection U band pass filter circuit (14) and amplifier current rectifying and wave filtering circuit (15); Long folded dipole (4) and (7) space is orthogonal, its wiring respectively with 300 Ω become 75 Ω adaptations (8) in parallel after, the adder circuit (11) of connecting successively, VL band pass filter circuit (13) and amplifier current rectifying and wave filtering circuit (15); Short folded dipole (5) is vertical mutually with (6) space, its wiring respectively with 300 Ω become 75 Ω adaptations (9) in parallel after, the adder circuit (12) of connecting successively, VH band pass filter circuit (24) and amplifier current rectifying and wave filtering circuit (15); TV signal imput output circuit (17) is connected with amplifier current rectifying and wave filtering circuit (15), connects with power circuit (16).

The utility model has the advantages that: can comprehensive highly sensitive received television signal, interference-free between the bands of television signals of reception, make television image clear.

Below in conjunction with accompanying drawing, the utility model is described further with embodiment:

Fig. 1 oscillator layout front view; Fig. 2 oscillator layout vertical view; Fig. 3 length folded dipole, 300 Ω become 75 Ω adaptations and VL, VH band pass filter circuit figure; Figure 48 font oscillator 75 Ω become 75 Ω adaptations and U band pass filter circuit figure; Fig. 5 amplifier current rectifying and wave filtering circuit figure; Fig. 6 power supply and TV signal imput output circuit figure.

In the accompanying drawing: 1,2 and 3 is 8 font oscillators, 4 and 7 are long folded dipole, 5 and 6 are short folded dipole, 8 and 9 is that 300 Ω become 75 Ω adaptations, 10 is that 75 Ω become 75 Ω adaptations, 11 and 12 adder circuit, the 13VL band pass filter circuit, the 14U band pass filter circuit, 15 amplifier current rectifying and wave filtering circuits, 16 power circuits, 17 TV signal imput output circuits, 18VL, VH band pass filter circuit and amplifier current rectifying and wave filtering circuit tie point, 19U band pass filter circuit and amplifier current rectifying and wave filtering circuit tie point, 20 and 21 amplifier current rectifying and wave filtering circuits and TV signal imput output circuit tie point, 22 and 23 television signal input points, 24VH band pass filter circuit; R ₁, R ₂, R ₃, R ₄, R ₅, R ₆, R ₇, R ₈, R ₉, R ₁₀, R ₁₁, R ₁₂, R ₁₃, R ₁₄And R ₁₅Resistance, C ₂, C ₃, C ₄, C ₅, C ₆, C ₇, C ₈, C ₉, C ₁₁, C ₁₂, C ₁₃, C ₁₄, C ₁₅, C ₁₆, C ₁₇, C ₁₈, C ₁₉, C ₂₀, C ₂₁, C ₂₂, C ₂₃, C ₂₄, C ₂₅, C ₂₆, C ₂₇And C ₂₈Electric capacity, C ₁And C ₁₀Electrochemical capacitor, D ₁Diode, D ₂And D ₃Light-emitting diode, BG1, BG2 and BG3 triode, B ₂₇Power transformer, L ₁, L ₂, L ₃, L ₄, L ₅, L ₆, L ₇, L ₈, L ₉, L ₁₀, L ₁₁, L ₁₇, L ₁₈, L ₁₉, L ₂₀, L ₂₁, L ₂₂, L ₂₃, L ₂₄And L ₂₅High-frequency inductor, B ₁₅And B ₁₆Adder, B ₁₂, B ₁₃, B ₁₄, B ₂₅And B ₂₆Adaptation.

After power circuit 16 is connected, after the 1-5 channel TV signal pick-up dipole of being made up of long folded dipole 4 and 7 is received TV signal, respectively by adaptation B ₁₂And B ₂₆Carry out 300 Ω and become 75 Ω coupling, send into by adder B ₁₅And resistance R ₁₂The adder circuit of forming 11 carries out TV signal addition and conversion output, enters C ₁₅, C ₁₆, L ₁₇And L ₁₈, the following TV signal of filtering 48 megahertzes, other TV signal enter C ₁₇, C ₁₈, L ₁₉And L ₂₀, send into amplifier current rectifying and wave filtering circuit 15 then, after triode BG1 amplifies, by C ₅, C ₆, L ₅And L ₆The outer interference signal of filtering band enters triode BG3 secondary amplifying signal, after C ₁₃, C ₁₄And L ₁₀Following and other interference signals of filtering 48 megahertzes enter TV signal imput output circuit 17, when television set is received television signal input point 22 and 23, can receive the TV programme of 1-5 channel clearly; After the 6-12 channel TV signal pick-up dipole of being made up of short folded dipole 5 and 6 is received TV signal, respectively by adaptation B ₁₃And B ₂₆Carry out 300 Ω and become 75 Ω coupling, send into by adder B ₁₆And resistance R ₁₃The adder circuit of forming 12 carries out TV signal addition and conversion output, enters L ₂₁, L ₂₂And C ₁₉The following TV signal of filtering 165 megahertzes, other TV signal enter C ₂₂, C ₂₃And L ₂₃, send into amplifier current rectifying and wave filtering circuit 15 then, after triode BG1 amplifies, through C ₅, C ₆, L ₅And L ₆Send into triode BG3 secondary amplifying signal, after C ₁₃, C ₁₄And L ₁₀Enter TV signal imput output circuit 17, when television set is received television signal input point 22 and 23, can receive the TV programme of 6-12 channel clearly; After the 13-68 channel TV signal pick-up dipole of being made up of three 8 font oscillators 1,2 and 3 is received TV signal, by adaptation B ₁₄Carry out 75 Ω and become 75 Ω coupling, send into by C ₂₄, C ₂₅And L ₂₄The signal that the U band pass filter circuit 14 filtering U channels of forming are following, other TV signal are sent into amplifier current rectifying and wave filtering circuit 15, through C ₃After the coupling, enter high frequency of triode BG2 and amplify, enter C ₇, C ₈And L ₄The following TV signal of forming of filter circuit filtering U channel enters triode BG3 secondary amplifying signal, after C ₁₃, C ₁₄And L ₁₀Enter TV signal imput output circuit 17, when television set is received television signal input point 22 and 23, can receive the TV programme of 13-68 channel clearly.

The parameter of the electronic devices and components that above embodiment is used is as follows:

R ₁=3.6K, R ₂=3.9K, R ₃=51K, R ₄=150 Ω, R ₅=10K, R ₆=100 Ω, R ₇=270 Ω, R ₈=39K, R ₉=6.8K, R ₁₀=100 Ω, R ₁₁=1.5K, R ₁₂=300 Ω, R ₁₃=300 Ω, R ₁₄=5 Ω, R ₁₅=1.5K; _C1=C ₁₀=220uF35VCD288 type, C ₂=51P, C ₃=6.8P, C ₄=1500P, C ₅=30P, C ₆=20P, C ₇=10P, C ₈=3.3P, C ₉=68P, C ₁₁=1500P, C ₁₂=1000P, C ₁₃=68P, C ₁₄=1000P, C ₁₅=C ₁₆=46P, C ₁₇=30P, C ₁₈=56P, C ₁₉=6.8P, C ₂₀=18P, C ₂₁=12P, C ₂₂=8.2P, C ₂₃=12P, C ₂₄=5P, C ₂₅=5P, C ₂₆=1000P, C ₂₇=C ₂₈=1000P, L ₁=2uH, L ₂=2uH, L ₃=5uH, L ₄=3uH, L ₅=3uH, L ₆=4uH, L ₇=10uH, L ₈=2uH, L ₉=4.5uH, L ₁₀=8uH, L ₁₁=20uH, L ₁₇=L ₁₈=6uH, L ₁₉=L ₂₀=5.5uH, L ₂₁=L ₂₂=3uH, L ₂₃=3.3uH, L ₂₄=2uH, L ₂₅=20uH, B ₂₇=220V/12V3W, B ₁₂=B ₁₃=B ₂₅=B ₂₆75 Ω become 75 Ω adaptations, B with high frequency magnetic core Nx-100 coiling ₁₅=B ₁₆=usefulness high frequency diplopore magnet ring coiling adder; D ₁=RF107 high-speed high frequency diode, D ₂=D ₃=light-emitting diode, BG1=BG2=AT415-11,8GHZ are conspicuous, 1 decibel of noise factor, and BG3=2C3355,6.5GHZ are conspicuous, 1.8 decibels of noise factors.

Claims (1)

1, television antenna, form by power circuit (16) etc., it is characterized in that: 8 font oscillators (1), (2) and (3) evenly distribute on 360 ° of circumference, after its wiring is connected in parallel, to become 75 Ω adaptations (10) in parallel with 75 Ω, series connection U band pass filter circuit (14) and amplifier current rectifying and wave filtering circuit (15); Long folded dipole (4) and (7) space is orthogonal, its wiring respectively with 300 Ω become 75 Ω adaptations (8) in parallel after, the adder circuit (11) of connecting successively, VL band pass filter circuit (13) and amplifier current rectifying and wave filtering circuit (15); Short folded dipole (5) and (6) space is orthogonal, its wiring respectively with 300 Ω become 75 Ω adaptations (9) in parallel after, the adder circuit (12) of connecting successively, VH band pass filter circuit (24) and amplifier current rectifying and wave filtering circuit (15); TV signal imput output circuit (17) is connected with amplifier current rectifying and wave filtering circuit (15), connects with power circuit (16).

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