CN2226345Y - Active small aerial for all channel TV receiving - Google Patents
Active small aerial for all channel TV receiving Download PDFInfo
- Publication number
- CN2226345Y CN2226345Y CN 95218390 CN95218390U CN2226345Y CN 2226345 Y CN2226345 Y CN 2226345Y CN 95218390 CN95218390 CN 95218390 CN 95218390 U CN95218390 U CN 95218390U CN 2226345 Y CN2226345 Y CN 2226345Y
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- China
- Prior art keywords
- switch
- output
- channel
- connects
- amplifier
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Abstract
The utility model relates to an active small aerial for all channel TV receiving, which is composed of an antenna array, and a channel tuning matching amplifier. The utility model is characterized in that the signals of all the channels can be best tuned and matched, so all the channels can get the best receiving effect.
Description
The utility model provides a kind of all-channel tv to receive active miniature antenna.
The existing active miniature antenna of various television receptions, when different channel was worked, every rating index was all variant.For example number of patent application is the utility model patent " all-channel tv receives active miniature antenna " of 93217986.x, and the characteristics of its circuit structure have been two parallel ports, and first passage is the metric wave signalling channel, by connecing amplifier after two band pass filter parallel connections; Second channel is the decimeter wave passage, and the decimeter wave signal directly enters television receiver via high pass filter.Above-mentioned patent is difficult to accomplish that all channels can both obtain the effect of optimal tuning coupling owing to adopted broadband filter and wide-band amplifier.Thereby can not accomplish that all channels can both obtain best view reception effect.
The utility model is intended to overcome the deficiencies in the prior art, and a kind of indoor miniature antenna that can both obtain optimum efficiency at all channels is provided.
Foundation of the present utility model is:
1. utilize the tuner frequency-selecting of television receiver, have only and give the consistent signal of selected frequency with tuner and just can be exaggerated gating.Inconsistent signal impedance presents infinity, is open-circuit condition.
2. design the channel tuning adaptation of each channel by channel.The effect of tuning adaptation is, on the one hand as a filter, only allows the signal of this channel frequency pass through, and the signal of other channels can not pass through, to eliminate various noise signals; As adaptation the input impedance that the output impedance of this channel antenna is transformed to the same frequency amplifier is complementary on the other hand, thereby makes the signal of different channel can both obtain best amplification and gating effect.
All-channel tv of the present utility model receives active miniature antenna to be made up of antenna array, base, outer cover, channel tuning adapter amplifier, it is characterized in that:
(1) antenna oscillator that is fixed on the insulation column connects the channel tuning adapter amplifier with conductor, and channel transfers the output of trip adapter amplifier to connect 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 and the gating switch that is connected in series with it, be connected in parallel to each other, connect amplifier after the parallel connection, and between the input of the tuning adaptation that connects and the amplifier out 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.
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 straight conductor element antenna that symmetry is 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.
Rotary switch have a common junction and n can with the output contact of common junction folding.
Said gating switch reaches and connects switch and is diode switch.Diode cathode links to each other with the corresponding output of switch trigger by current-limiting resistance, and negative pole is by inductance ground connection.Switch ends also is connected to capacitance respectively.
The gating switch trigger is made up of A/D converter, step-by-step counting trigger and OR-NOT circuit.An A/D converter, the output of its input termination amplifier, its output connects the input of the step-by-step counting trigger with n output trigger end.The n of a step-by-step counting trigger output connects corresponding gating switch respectively, also connects the input of NOR gate simultaneously, and the output of NOR gate connects and connect switch.
Amplifier is the amplifier that is provided with the noiseless biasing circuit.
Tuning adapter amplifier in the active miniature antenna of above-mentioned television reception, available discrete component is made on the circuit board, also can make thick film circuit.Circuit board of being made 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 concrete technical scheme of the present utility model is described further.
Fig. 1, the antenna front view.
Fig. 2, the antenna vertical view.
Wherein, 1-Metric wave aerial oscillator, 2-clamp, 3-insulation column, 4-circuit board, 5-cover, 6-base, 7-decimeter-wave antenna oscillator, 8-power pack.
Fig. 3, the circuit structure of the channel tuning adapter amplifier of employing rotary switch.
Wherein, I-tuning adaptation, VI-rotary switch, III-amplifier.
Fig. 4 adopts gating switch to reach and connect the circuit structure of the channel tuning adapter amplifier of switch.
Wherein, I-tuning adaptation, II-gating switch, III-amplifier, IV-switch trigger, V-and connect switch, II
1-switching diode, II
2-current-limiting resistance, II
3-choke, II
4, II
5-capacitance, IV
1-A/D converter, IV
2-step-by-step counting trigger, IV
3-NOR gate.
Fig. 1, the 2nd, a kind of embodiment.Antenna array is formed in four layers of oscillator unit.Oscillator unit [1], [7] are to be the round metal bars of 6mm or the symmetrical dipole that pipe is made with diameter, and oscillator is horizontally fixed on the insulation column [3] with clamp [2].The oscillator of antenna array divides two rows, and a row is used for decimeter wave, its oscillator brachium 130mm, symmetrical distance from top 15mm, length overall 275mm, interfloor distance 75mm.Another row is used for metric wave, its oscillator brachium 200mm, length overall 415mm.In different embodiment, number of plies difference can be 2 layers, 3 layers, 4 layers, 5 layers or 6 layers.Insulation column [3] is fixed on the base [6].Circuit board or thick film hybrid [4] also are housed on the base [6].Antenna oscillator also is equipped with power pack [8] and cover [5] with conductor connection circuit plate 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 the negative pole of power supply and the earth terminal of antenna and adaptation output 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 adaptation, and the output D of channel tuning adaptation and earth terminal connect television receiver by 75 Ω antennas.
N tuning adaptation arranged.The quantity n of tuning adaptation can equate that promptly a channel also can share a tuning adaptation by adjacent channel with a tuning adaptation with the channel number of antenna work.Therefore, the numerical value of n is less than or equal to channel number.N is 25 in the present embodiment.Consider the filter effect of channel tuning adaptation, on the tuning adaptation of each channel gating switch is housed also.Gating switch is by the switch trigger triggering and conducting, and its effect is, after television set preliminary election working channel is determined, has only the gating switch conducting of tuning device of this channel, and all the other are all opened a way.
Fig. 4 channel tuning adapter amplifier is by tuning adaptation, amplifier and gating switch K
1, K
2... K
n, and connect K switch
0And switch trigger is formed.
Gating switch reaches and connects the diode switch that switch is switching diode.Diode I
1Positive pole meet current-limiting resistance I
2And capacitance I
5The negative pole of diode meets capacitance I
4And by choke I
3Ground connection.
In the circuit structure of switch trigger: A/D converter IV
1The output of input termination amplifier, its output meets step-by-step counting trigger IV
2Input.The step-by-step counting trigger has n gating output trigger end, and n gating output trigger end connects the gating switch of corresponding channel respectively.Gating output trigger end also meets NOR gate IV
3Input.The output of NOR gate is the zero-output terminal of switch trigger, connects and connect switch.
Moment after start, all diodes all are in cut-off state, and the gating output of switch trigger is in zero potential.Therefore, between the input B of tuning adapter amplifier and output D, also connect and connect K switch in the lump
0When the gating trigger end of switch trigger is zero potential, with and connect K switch
0The 0 trigger end output positive potential of the switch trigger that links makes and connects switch conduction.Signal that antenna received through and connect switch and enter the television set high-frequency tuner, have only the signal consistent just can enter with high-frequency tuner previous channel feature frequency.This signal send the switch trigger input simultaneously.The switch triggering output of the corresponding channel of switch trigger output positive voltage, zero trigger end changes zero potential into by positive potential, and connects switch and end.The gating switch conducting of corresponding channel.In the process of watching, if change channel, then the gating switch of original channel ends, and connects switch conduction, repeats aforementioned process again, the gating switch conducting of new channel.
Television reception active small aerial provided by the utility model can both be obtained at VHF and all frequency ranges of UHF Good view reception effect. Its effect can be compared with common antenna.
Claims (4)
1. an all-channel tv receives active miniature antenna, is made up of antenna array, base, cover, channel tuning adapter amplifier, it 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 and the gating switch that is connected in series with it, be connected in parallel to each other, connect amplifier after the parallel connection, and between the input of the tuning adaptation that connects and the amplifier out 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.
2. 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 straight conductor element antenna that symmetry is arranged side by side, wherein the half of oscillator of a row is long is 200mm, and another arranges the long 130mm of being of half of oscillator, vibrator diameter 6mm.
3. claim 1,2 said all-channel tvs receive active miniature antenna, it is characterized in that: gating switch reaches and connects switch and is diode switch, diode cathode links to each other negative pole by inductance ground connection by current-limiting resistance with the corresponding output of switch trigger, switch ends also is connected to capacitance respectively, the gating switch trigger is by A/D converter, the step-by-step counting trigger, form with OR-NOT circuit, an A/D converter, the output of its input termination amplifier, its output connects the input of the step-by-step counting trigger with n output trigger end, the n of a step-by-step counting trigger output connects corresponding gating switch respectively, also connect the input of NOR gate simultaneously, the output of NOR gate connects and connects switch.
4. claim 1,2 said all-channel tvs receive active miniature antenna, it is characterized in that: rotary switch have a common junction and n can with the output contact of common junction folding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95218390 CN2226345Y (en) | 1995-08-18 | 1995-08-18 | Active small aerial for all channel TV receiving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95218390 CN2226345Y (en) | 1995-08-18 | 1995-08-18 | Active small aerial for all channel TV receiving |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2226345Y true CN2226345Y (en) | 1996-05-01 |
Family
ID=33866943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95218390 Expired - Fee Related CN2226345Y (en) | 1995-08-18 | 1995-08-18 | Active small aerial for all channel TV receiving |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2226345Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101212230B (en) * | 2006-12-26 | 2012-07-11 | 中兴通讯股份有限公司 | Device and method for implementing DVB-H antenna matching network for mobile telephone |
| CN105932399A (en) * | 2016-05-31 | 2016-09-07 | 芜湖辉灿电子科技有限公司 | Three-frequency multi-layer conversion mobile phone antenna |
-
1995
- 1995-08-18 CN CN 95218390 patent/CN2226345Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101212230B (en) * | 2006-12-26 | 2012-07-11 | 中兴通讯股份有限公司 | Device and method for implementing DVB-H antenna matching network for mobile telephone |
| CN105932399A (en) * | 2016-05-31 | 2016-09-07 | 芜湖辉灿电子科技有限公司 | Three-frequency multi-layer conversion mobile phone antenna |
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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 |