CN2299400Y - Full-frequency television receiving small active antenna - Google Patents
Full-frequency television receiving small active antenna Download PDFInfo
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- CN2299400Y CN2299400Y CN 97216487 CN97216487U CN2299400Y CN 2299400 Y CN2299400 Y CN 2299400Y CN 97216487 CN97216487 CN 97216487 CN 97216487 U CN97216487 U CN 97216487U CN 2299400 Y CN2299400 Y CN 2299400Y
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Abstract
The utility model relates to a full-frequency television receiving small active antenna. The utility model is composed of an antenna array and a channel tuning matching amplifier. The utility model has the characteristics of the channel tuning matching amplifier has small network and low cost. Besides, all channel signals can obtain the optimal tuning match and the watching effect.
Description
The utility model provides a kind of all-channel tv to receive active miniature antenna.
Number of patent application is 95218390.0 utility model patent " all-channel tv receives active miniature antenna ", is that the patent No. is 93217986, and the improvement of X utility model patent is characterized in that:
(1) antenna oscillator that is fixed on the insulation column connects the channel tuning adapter amplifier with conductor, and the output of channel tuning adapter amplifier connects television receiver by 75 Ω feeders;
(2) the channel tuning adapter amplifier has n tuning adaptation in parallel, and the output of tuning adaptation connects a rotary switch, and the output of rotary switch connects amplifier.Or
(3) the channel tuning adapter amplifier has n tuning adaptation in parallel, each tuning adaptation is connected in series a gating switch respectively, n tuning adaptation reaches and is connected in series gating switch with it, be connected in parallel to each other, connect amplifier after the parallel connection, and between the output of the input of the tuning adaptation that connects and amplifier also and connect one and connect switch, one has n+1 gating switch trigger that triggers output, its input connects the output of amplifier, it is the input of television receiver high-frequency tuner, the n+1 of a gating switch trigger output connect respectively each corresponding gating switch and and connect switch, n is a certain value that is less than or equal in the positive integer of television reception channel number.
(4) antenna array is that two rows are respectively equipped with 3 layers, 4 layers, 5 layers or 6 layers of symmetry straight conductor element antenna arranged side by side, and wherein the half of oscillator of a row is long is 200mm, and another is arranged half of oscillator length and is 130mm, vibrator diameter 6mm, and two kinds of oscillators are the garden column type.
Though this utility model patent has solved the view reception effect of all channels (metric wave and decimeter waves), because the channel of metric wave and decimeter wave has more than 60, so circuit network is very huge, and cost is very high.
The purpose of this utility model is to overcome the deficiencies in the prior art, provides the fairly simple all-channel tv of a kind of circuit to receive active miniature antenna.
Foundation of the present utility model is:
Impedance of decimeter range transmission characteristic and frequency-independent.When adopting the coaxial type antenna, need not adopt the channel tuning adaptation; And at VHF band, because wavelength is long, antenna size is big, and garden column type antenna frequency band is narrow, and antenna impedance is violent with frequency change, so still adopt the channel tuning matching technique.Therefore, the quantity of used channel tuning adaptation and the gating switch that is connected in series with it reduces to 12 the tunnel by 60 multichannels, the also corresponding minimizing of the output of gating switch trigger.
All-channel tv provided by the utility model receives active miniature antenna to be made up of antenna array, base, outer cover, channel tuning adapter amplifier, and said antenna array has two pairs, and one pair is the Metric wave aerial battle array, and another pair is the decimeter-wave antenna battle array, it is characterized in that:
(1) the decimeter-wave antenna oscillator is a coaxial type, and the Metric wave aerial oscillator is the garden column type;
(2) the Metric wave aerial oscillator that is fixed on the insulation column connects the input of channel tuning adaptation with conductor, and the output of channel tuning adaptation connects amplifier; The decimeter-wave antenna battle array connects low pass Broadband Matching filter with conductor, and the output of filter connects amplifier, and the output of amplifier connects television receiver by the feeder line of 75 Ω;
(3) the channel tuning adapter amplifier has the tuning adaptation of 12 parallel connections, 12 channels of corresponding VHF band, each tuning adaptation is connected in series a gating switch respectively, 12 tuning adaptations and the gating switch that is connected in series with it, be connected in parallel to each other, connect amplifier after the parallel connection, one has 12 gating switch triggers that trigger output, its input connects the output of the output and the Metric wave aerial of amplifier, and 12 outputs of gating switch trigger connect each corresponding gating switch respectively.
The antenna array of the active miniature antenna of above-mentioned television reception is that two rows are respectively equipped with 3 layers, 4 layers, 5 layers or 6 layers of symmetry oscillator arranged side by side, and wherein the half of oscillator of a row is long is 200mm, adopts garden column type conductor; Another arranges the long 120mm of being of half of oscillator, adopts coaxial conductor.
Said gating switch is a diode switch.The corresponding output with switch trigger of diode cathode links to each other, and negative pole is by load resistance ground connection.Switch ends is connected to capacitance respectively.
The gating switch trigger is made up of A/D converter, step-by-step counting trigger, delay switch and capacitance.An A/D converter, its input connects the output of amplifier by delay switch and capacitance, and its output connects the step-by-step counting triggers input with 12 output trigger ends.12 outputs of step-by-step counting trigger connect corresponding gating switch respectively.
Tuning adapter amplifier in the active miniature antenna of above-mentioned television reception can be made on the circuit board with discrete component, also can make thick film circuit.Circuit board of making or thick film circuit have four outer leads, i.e. power line A, incoming line B, output line D and ground wire C.
Below in conjunction with drawings and Examples the concrete technical scheme of the utility model is described further.
Fig. 1, the antenna front view.
Fig. 2, the antenna vertical view.
Wherein: 1-Metric wave aerial oscillator, 2-decimeter wave coaxial antenna oscillator, 3-circuit board, 4-coaxial inner conductor, 5-coaxial outer conductor, 6-75 Ω feeder lines, 7-power supply, 8-power line, 9-insulation column, 10-cover, 11-base.
Fig. 3, the circuit structure of the channel tuning adapter amplifier of employing rotary switch.
Wherein, I-tuning adaptation, V-rotary switch, III-amplifier, MT-Metric wave aerial, FMT-decimeter-wave antenna, E-low pass Broadband Matching filter, A-power supply.
Fig. 4, the circuit structure of employing gating switch and channel tuning adapter amplifier.
Wherein, I-tuning adaptation, II-gating switch, III-amplifier, IV-gating switch trigger, II
1-switching diode, II
2-load resistance, II
3, II
4-capacitance, IV1-A/D converter, IV
2-step-by-step counting trigger, IV
3-capacitance, IV
4-delay switch, MT-Metric wave aerial, FMT-decimeter-wave antenna, E-low pass broadband filter, A-power supply.
Fig. 1,2, the 3rd, a kind of embodiment.Antenna array is formed in four layers of oscillator unit.Oscillator unit [1] is to be the symmetrical dipole that the round metal bars of 4mm is made with diameter, and oscillator is horizontally fixed on the insulation column [9] with clamp, and this antenna array is used for metric wave, oscillator brachium 200mm.Oscillator unit [2] is a decimeter-wave antenna, and its oscillator brachium 120mm adopts coaxial conductor to make.In different embodiment, number of plies difference can be 2 layers, 3 layers, 4 layers, 5 layers or 6 layers.Insulation column [9] is fixed on the base [11].Antenna oscillator conductor connection circuit plate.Power supply [7] and cover [10] also are housed on the base.
Among Fig. 3: A is a power line, and the A point is by the positive 6 volt power supplys of switch tipping in power pack; C is a ground wire, and the C point connects negative pole and the antenna and the tuning adapter amplifier output earth terminal of power supply respectively; B is an input; D is an output.The signal that antenna oscillator receives is by two conductors feed respectively the input B and the earth terminal C of channel tuning adapter amplifier, and the output D of channel tuning adapter amplifier and earth terminal connect television receiver by 75 Ω antennas.
The channel tuning adapter amplifier of Fig. 3 embodiment is made up of channel tuning adaptation [I], rotary switch [V] and amplifier [III].Rotary switch or key switch have a common junction and 12 can with the input of common junction folding, 12 inputs connect 12 channel tuning adaptations respectively, the effect of rotary switch is, after television set preliminary election working channel is determined, have only the gating switch of the tuning adaptation of this channel to connect, all the other are all opened a way.
Fig. 1,2,4 constitutes another kind of embodiment.The channel tuning adapter amplifier of Fig. 4 is made up of channel tuning adaptation [I], amplifier [III] and gating switch [II] and gating switch trigger [IV].
Gating switch is the diode switch of switching diode.Diode [II
1] the corresponding trigger end of the logical switch trigger of anodal selecting, and by capacitance [II
4] connect amplifier [III].Diode cathode meets capacitance [II
3] and by load resistance [II
2] ground connection.
In the circuit structure of gating switch trigger: a delay switch is arranged, and the input of delay switch connects the output and the amplifier out of Metric wave aerial by electric capacity, and the input of delay switch also meets power supply A, and output meets A/D converter [IV
1] input.The output of A/D converter meets step-by-step counting trigger [IV
2] input.The step-by-step counting trigger has 12 gating output trigger ends, and 12 gating output trigger ends connect the gating switch of corresponding channel respectively.
In the moment of start, all diodes all are in cut-off state, and the gating output of gating switch trigger is in zero potential.The signal that antenna received enters the television set high-frequency tuner, has only the signal consistent with high-frequency tuner previous channel feature frequency just can enter.This signal is sent to be elected simultaneously and is led to the switch trigger input.The switch triggering output output positive voltage of the corresponding channel of gating switch trigger, the gating switch conducting of corresponding channel.In the process of watching, if change channel, then the gating switch of original channel ends, and repeats aforementioned process, the gating switch conducting of new channel.
The active miniature antenna of television reception provided by the utility model can both be obtained good view reception effect at VHF and all frequency ranges of UHF.
Claims (6)
1. an all-channel tv receives active miniature antenna, is made up of antenna array, base, outer cover, channel tuning adapter amplifier, and said antenna array has two pairs, and one pair is the Metric wave aerial battle array, and another pair is the decimeter-wave antenna battle array, it is characterized in that:
(1) the decimeter-wave antenna oscillator is a coaxial type, and the Metric wave aerial oscillator is the garden column type;
(2) the Metric wave aerial oscillator that is fixed on the insulation column connects the input of channel tuning adaptation with conductor, and the output of channel tuning adaptation connects amplifier; The decimeter-wave antenna battle array connects low pass Broadband Matching filter with conductor, and the output of filter connects amplifier, and the output of amplifier connects television receiver by the feeder line of 75 Ω;
(3) the channel tuning adapter amplifier has the tuning adaptation of 12 parallel connections, 12 channels of corresponding VHF band, each tuning adaptation is connected in series a gating switch respectively, 12 tuning adaptations and the gating switch that is connected in series with it, be connected in parallel to each other, connect amplifier after the parallel connection, one has 12 gating switch triggers that trigger output, its input connects the output of the output and the Metric wave aerial of amplifier, and 12 outputs of gating switch trigger connect each corresponding gating switch respectively; Or
2. an all-channel tv receives active miniature antenna, is made up of antenna array, base, outer cover, channel tuning adapter amplifier, and said antenna array has two pairs, and one pair is the Metric wave aerial battle array, and another pair is the decimeter-wave antenna battle array, it is characterized in that:
(1) the decimeter-wave antenna oscillator is a coaxial type, and the Metric wave aerial oscillator is the garden column type;
(2) the Metric wave aerial oscillator that is fixed on the insulation column connects the input of channel tuning adaptation with conductor, and the output of channel tuning adaptation connects amplifier; The decimeter-wave antenna battle array connects low pass Broadband Matching filter with conductor, and the output of filter connects amplifier, and the output of amplifier connects television receiver by the feeder line of 75 Ω;
(3) the channel tuning adapter amplifier has the tuning adaptation of 12 parallel connections, and the output of tuning adaptation connects a rotary switch or key switch, and the output of rotary switch or key switch connects amplifier.
3. according to the active miniature antenna of the said television reception of claim 1, it is characterized in that: antenna array is that two rows are respectively equipped with 3 layers, 4 layers, 5 layers or 6 layers of element antenna that symmetry is arranged side by side, and wherein a row is Metric wave aerial, and half of oscillator is long to be 200mm, vibrator diameter 6mm; Another row is decimeter-wave antenna, and half of oscillator is long to be 120mm, and oscillator adopts the coaxial type conductor.
4. receive active miniature antenna according to claim 1,2 said all-channel tvs, it is characterized in that: gating switch is diode switch, the corresponding output of the logical switch trigger of the anodal selecting of diode links to each other negative pole by load resistance ground connection, and switch ends also is connected to capacitance respectively.
5. receive active miniature antenna according to claim 1,2 said all-channel tvs, it is characterized in that: the gating switch trigger is made up of A/D converter, step-by-step counting trigger and delay switch and capacitance, a delay switch is arranged, the input of delay switch connects the output and the amplifier out of Metric wave aerial by capacitance, the input of delay switch also meets power supply A, and its output meets A/D converter [IV
1] input.A/D converter output meets step-by-step counting trigger [IV
2] input.The step-by-step counting trigger has 12 gating output trigger ends, and 12 gating output trigger ends connect the gating switch of corresponding channel respectively.
6. receive active miniature antenna according to claim 1,3 said all-channel tvs, it is characterized in that: rotary switch or key switch have a common junction and 12 can with the input contact of common junction folding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97216487 CN2299400Y (en) | 1997-05-08 | 1997-05-08 | Full-frequency television receiving small active antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97216487 CN2299400Y (en) | 1997-05-08 | 1997-05-08 | Full-frequency television receiving small active antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2299400Y true CN2299400Y (en) | 1998-12-02 |
Family
ID=33933372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97216487 Expired - Fee Related CN2299400Y (en) | 1997-05-08 | 1997-05-08 | Full-frequency television receiving small active antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2299400Y (en) |
-
1997
- 1997-05-08 CN CN 97216487 patent/CN2299400Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |