CN209002054U - A kind of VHF and UHF signal behavior antenna signal amplifier - Google Patents
A kind of VHF and UHF signal behavior antenna signal amplifier Download PDFInfo
- Publication number
- CN209002054U CN209002054U CN201821615166.4U CN201821615166U CN209002054U CN 209002054 U CN209002054 U CN 209002054U CN 201821615166 U CN201821615166 U CN 201821615166U CN 209002054 U CN209002054 U CN 209002054U
- Authority
- CN
- China
- Prior art keywords
- signal
- vhf
- output end
- uhf
- uhf1
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Abstract
The utility model discloses a kind of VHF and UHF signal behavior antenna signal amplifiers, belong to CATV system front end or Open TV front end field, a kind of VHF and UHF signal behavior antenna signal amplifier, including VHF/UHF1 signal, UHF2 signal, RF signal element and power supply unit, RF signal element includes VHF/UHF1 signal input part and UHF2 signal input part, VHF/UHF1 signal enters from VHF/UHF1 signal input part, it can be to VHF, uhf band signal carries out selection amplification, switching is flexible, it interferes small, gain is up to 30 decibels, independent Attenuation adjustable can be carried out to each frequency range, when the UHF weak output signal of an aerial signal, the UHF signal of another way can be switched to, it can also select according to actual needs It selects and wants to filter out FM signal.
Description
Technical field
The utility model relates to CATV system front end or Open TV front end field, more specifically to a kind of VHF and
UHF signal behavior antenna signal amplifier.
Background technique
CATV system, i.e. common antenna TV system (or cable television system) are a kind of wide using coaxial cable progress
The system of frequency band transmission audio-video signal, its reception power is big, can both improve the reception of TV signal, improves audio-video quality,
Frequency modulation broadcasting program can also be transmitted, and programming source is abundant, in addition, its service range is wide, it is easy to maintain, it is convenient for concentrate tube
Reason.
But CATV system front end signal amplifier at present on the market can only receive an aerial signal, when connecing two
It needs to install two antenna amplifier antennafires when a aerial signal, then the signal mixing of two antenna amplifier antennafires is exported again again, such as
Fruit will filter out FM signal, also connect a FM bandstop filter again, complex circuit is at high cost, is easy to produce interference, cannot be to each frequency
Duan Duli Attenuation adjustable, gain is low, and generally 20 decibels.
Utility model content
1. technical problems to be solved
Aiming at the problems existing in the prior art, the purpose of this utility model is to provide a kind of choosings of VHF and UHF signal
Selecting antennas signal amplifier, it may be implemented that two aerial signals can be connect, can select VHF, UHF frequency band signals
Amplification, flexibly, interference is small, and gain is up to 30 decibels for switching, can carry out independent Attenuation adjustable to each frequency range, when an antenna is believed
Number UHF weak output signal when, the UHF signal of another way can be switched to, can also select to want to filter out FM according to actual needs
Signal.
2. technical solution
To solve the above problems, the utility model adopts the following technical scheme.
A kind of VHF and UHF signal behavior antenna signal amplifier, including VHF/UHF1 signal, UHF2 signal, RF signal list
Member and power supply unit, the RF signal element include VHF/UHF1 signal input part and UHF2 signal input part, the VHF/
UHF1 signal enters from VHF/UHF1 signal input part, and the UHF2 signal enters from UHF2 signal input part, the VHF/
The output end of UHF1 signal input part is connected with VHF/UHF frequency divider a, and the output end of the VHF/UHF frequency divider a connects respectively
It is connected to the toggle switch a of toggle switch b and a pair of series, is connected with FM bandstop filter, institute between a pair of toggle switch a
The output end for stating toggle switch a is connected with low noise amplification pipe aa, and the output end of the low noise amplification pipe aa is connected with VHF increasing
Benefit, the output end of the VHF gain are connected with the input terminal of VHF/UHF frequency mixer a, the input terminal of the toggle switch b and
The connection of UHF2 signal input part, the output end of the toggle switch b are connected with low noise amplification pipe ab, the low noise amplification pipe
The output end of ab is connected with UHF gain, and the output end of the UHF gain is connected with the input terminal of VHF/UHF frequency mixer a, described
The output end of VHF/UHF frequency mixer a is connected with low noise amplification pipe b, and the output end of the low noise amplification pipe b is connected with power
Amplifier tube, the output end of the power amplifier tube are connected with low-pass filter, and the output end of the low-pass filter is connected with RF
Output end, said supply unit include DC input terminal, the RF output end connection of the DC input terminal and amplifier, the RF output
End is connected with choke coil, and the output end of the choke coil is connected with voltage regulator circuit, and the output end of the voltage regulator circuit is connected with filter
Wave circuit, the filter circuit are connect with multiple amplifier tubes, may be implemented that two aerial signals can be connect, can be to VHF, UHF
Frequency band signals carry out selection amplification, and flexibly, interference is small, and gain is up to 30 decibels for switching, can carry out independent decaying to each frequency range
It adjusts, when the UHF weak output signal of an aerial signal, the UHF signal of another way can be switched to, it can also be according to practical need
It selects to want to filter out FM signal.
Further, the frequency of the low-pass filter is 700MHz.
Further, the direct current of the DC input terminal input is in 12V between 24V.
3. beneficial effect
Compared with the prior art, utility model has the advantages that
(1) this programme may be implemented that two aerial signals can be connect, and selection can be carried out to VHF, uhf band signal and is put
Greatly, flexibly, interference is small, and gain is up to 30 decibels for switching, independent Attenuation adjustable can be carried out to each frequency range, when an aerial signal
UHF weak output signal when, the UHF signal of another way can be switched to, can also select to want to filter out FM letter according to actual needs
Number.
(2) frequency of low-pass filter is 700MHz.
(3) direct current of DC input terminal input is in 12V between 24V.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model RF signal element；
Fig. 2 is the structural schematic diagram of the utility model power supply unit；
Fig. 3 is the principles of the present invention figure.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe；Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment, based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
In the description of the present invention, it should be noted that term " on ", "lower", "inner", "outside", " top/bottom end " etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model
It is described with simplifying, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation structure
It makes and operates, therefore should not be understood as limiting the present invention.In addition, term " first ", " second " are only used for description mesh
, it is not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " being provided with ", " be arranged/connect ", " connection " etc., shall be understood in a broad sense, such as " connection ", may be a fixed connection, can also be with
It is to be detachably connected, or be integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be with
Indirectly connected through an intermediary, it can be the connection inside two elements.For the ordinary skill in the art, may be used
The concrete meaning of above-mentioned term in the present invention is understood with concrete condition.
Embodiment 1:
Please refer to Fig. 1-3, a kind of VHF and UHF signal behavior antenna signal amplifier, including VHF/UHF1 signal, UHF2
Signal, RF signal element and power supply unit, RF signal element include VHF/UHF1 signal input part and UHF2 signal input part,
VHF/UHF1 signal enters from VHF/UHF1 signal input part, and UHF2 signal enters from UHF2 signal input part, VHF/UHF1 letter
The output end that the output end of number input terminal is connected with VHF/UHF frequency divider a, VHF/UHF frequency divider a, which is connected separately with, to be stirred out
It closes and is connected with FM bandstop filter, the output of toggle switch a between b and the toggle switch a, a pair of of toggle switch a of a pair of series
End is connected with low noise amplification pipe aa, and the output end of low noise amplification pipe aa is connected with VHF gain, and the output end of VHF gain connects
It is connected to the input terminal of VHF/UHF frequency mixer a, the input terminal of toggle switch b is connected with UHF2 signal input part, toggle switch b's
Output end is connected with low noise amplification pipe ab, and the output end of low noise amplification pipe ab is connected with UHF gain, the output of UHF gain
End is connected with the input terminal of VHF/UHF frequency mixer a, and the output end of VHF/UHF frequency mixer a is connected with low noise amplification pipe b, low noise
The output end of sound amplifier tube b is connected with power amplifier tube, and the output end of power amplifier tube is connected with low-pass filter, low pass filtered
The output end of wave device is connected with RF output end, and power supply unit includes DC input terminal, the RF output end company of DC input terminal and amplifier
It connects, RF output end is connected with choke coil, and the output end of choke coil is connected with voltage regulator circuit, and the output end of voltage regulator circuit is connected with filter
Wave circuit, filter circuit are connect with multiple amplifier tubes, and the frequency of low-pass filter is 700MHz, the direct current of DC input terminal input
In 12V between 24V.
Referring to Fig. 1, when toggle switch a pushes (B point and A point disconnect) when B point is connected with C point, while toggle switch b is dialled
When being connected to B point with A point (B point and C point disconnect), VHF/UHF1 signal enters from VHF/UHF1 signal input part port, passes through
VHF/UHF frequency divider a, separates VHF signal and UHF1 signal, and VHF signal is up walked, and UHF1 signal walks downward.VHF signal
It is mixed directly to be reached using low noise amplification pipe aa amplification and VHF gain by the B point of toggle switch a and C point by VHF/UHF
The input port VHF of frequency device a；UHF1 signal is reached by toggle switch b using low noise amplification pipe ab amplification and UHF gain
The input port UHF of VHF/UHF frequency mixer a.After VHF signal and UHF1 signal pass through frequency mixer 1, then pass through low noise amplification pipe b
And power amplifier tube, it is exported finally by low-pass filter from RF output end.
When toggle switch a pushes (B point and A point disconnect) when B point is connected with C point, while toggle switch b pushes B point and C
When point conducting (B point and A point disconnect), VHF/UHF1 signal enters from VHF/UHF1 signal input part port, passes through VHF/UHF points
Frequency device a, separates VHF signal and UHF1 signal, and VHF signal is up walked, and UHF1 signal walks downward.VHF signal, which directly passes through, to be dialled
Dynamic switch a reaches the input port VHF of VHF/UHF frequency mixer a using low noise amplification pipe aa amplification and VHF gain；UHF1
Signal can not be by toggle switch b, and UHF2 signal is by toggle switch b at this time, using low noise amplification pipe ab amplification and UHF
Gain reaches the input port UHF of VHF/UHF frequency mixer a.After VHF signal and UHF2 signal pass through frequency mixer 1, then pass through low noise
Sound amplifier tube b and power amplifier tube are exported finally by low-pass filter from RF output end.
When toggle switch a pushes (B point and C point disconnect) when B point is connected with A point, while toggle switch b pushes B point and A
When point conducting (B point and C point disconnect), VHF/UHF1 signal enters from VHF/UHF1 signal input part port, passes through VHF/UHF points
Frequency device a, separates VHF signal and UHF1 signal, and VHF signal is up walked, and UHF1 signal walks downward.VHF signal is by stirring out
The B point and A point for closing a reach VHF/UHF using low noise amplification pipe aa amplification and VHF gain by FM bandstop filter
The input port VHF of frequency mixer a；UHF1 signal is by toggle switch b, using low noise amplification pipe ab amplification and UHF gain,
Reach the input port UHF of VHF/UHF frequency mixer a.After VHF signal and UHF1 signal pass through frequency mixer 1, then pass through low noise amplification
Pipe b and power amplifier tube are exported finally by low-pass filter from RF output end.
When toggle switch a pushes (B point and C point disconnect) when B point is connected with A point, while toggle switch b pushes B point and A
When point conducting (B point and C point disconnect), VHF/UHF1 signal enters from VHF/UHF1 signal input part port, passes through VHF/UHF points
Frequency device a, separates VHF signal and UHF1 signal, and VHF signal is up walked, and UHF1 signal walks downward.VHF signal is by stirring out
The B point and A point for closing a reach VHF/UHF using low noise amplification pipe aa amplification and VHF gain by FM bandstop filter
The input port VHF of frequency mixer a；UHF1 signal can not be by toggle switch b, and UHF2 signal passes through toggle switch b at this time, using
Low noise amplification pipe ab amplification and UHF gain, reach the input port UHF of VHF/UHF frequency mixer a.VHF signal and UHF2 signal
It is defeated from RF output end finally by low-pass filter after frequency mixer 1, then through low noise amplification pipe b and power amplifier tube
Out.
12V-24V direct current is inputted from DC input terminal, then the RF output end of amplifier is input to by coaxial cable, then
The direct current of 12V-24V is become stable 8V direct current by internal voltage regulator circuit by the choke coil of RF output end,
By filter circuit, finally power to each amplifier tube.
Antenna signal amplifier in this programme can connect two aerial signals, can carry out to VHF, uhf band signal
Selection amplification, flexibly, interference is small, and gain is up to 30 decibels for switching, independent Attenuation adjustable can be carried out to each frequency range, when a day
When the UHF weak output signal of line signal, it can be switched to the UHF signal of another way, can also select to want to filter according to actual needs
Except FM signal.
The preferable specific embodiment of the above, only the utility model；But the protection scope of the utility model is not
It is confined to this.Anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its improvement design is subject to equivalent substitution or change, should all cover in the protection scope of the utility model
It is interior.
Claims (3)
1. a kind of VHF and UHF signal behavior antenna signal amplifier, including VHF/UHF1 signal, UHF2 signal, RF signal element
And power supply unit, it is characterised in that: the RF signal element includes VHF/UHF1 signal input part and UHF2 signal input part, institute
It states VHF/UHF1 signal to enter from VHF/UHF1 signal input part, the UHF2 signal enters from UHF2 signal input part, described
The output end of VHF/UHF1 signal input part is connected with VHF/UHF frequency divider a, the output end difference of the VHF/UHF frequency divider a
It is connected with the toggle switch a of toggle switch b and a pair of series, is connected with FM bandstop filter between a pair of toggle switch a,
The output end of the toggle switch a is connected with low noise amplification pipe aa, and the output end of the low noise amplification pipe aa is connected with VHF
Gain, the output end of the VHF gain are connected with the input terminal of VHF/UHF frequency mixer a, the input terminal of the toggle switch b and
The connection of UHF2 signal input part, the output end of the toggle switch b are connected with low noise amplification pipe ab, the low noise amplification pipe
The output end of ab is connected with UHF gain, and the output end of the UHF gain is connected with the input terminal of VHF/UHF frequency mixer a, described
The output end of VHF/UHF frequency mixer a is connected with low noise amplification pipe b, and the output end of the low noise amplification pipe b is connected with power
Amplifier tube, the output end of the power amplifier tube are connected with low-pass filter, and the output end of the low-pass filter is connected with RF
Output end, said supply unit include DC input terminal, the RF output end connection of the DC input terminal and amplifier, the RF output
End is connected with choke coil, and the output end of the choke coil is connected with voltage regulator circuit, and the output end of the voltage regulator circuit is connected with filter
Wave circuit, the filter circuit are connect with multiple amplifier tubes.
2. a kind of VHF and UHF signal behavior antenna signal amplifier according to claim 1, it is characterised in that: described low
The frequency of bandpass filter is 700MHz.
3. a kind of VHF and UHF signal behavior antenna signal amplifier according to claim 1, it is characterised in that: the DC
The direct current of input terminal input is in 12V between 24V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821615166.4U CN209002054U (en) | 2018-09-30 | 2018-09-30 | A kind of VHF and UHF signal behavior antenna signal amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821615166.4U CN209002054U (en) | 2018-09-30 | 2018-09-30 | A kind of VHF and UHF signal behavior antenna signal amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209002054U true CN209002054U (en) | 2019-06-18 |
Family
ID=66802407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821615166.4U Expired - Fee Related CN209002054U (en) | 2018-09-30 | 2018-09-30 | A kind of VHF and UHF signal behavior antenna signal amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209002054U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110417459A (en) * | 2019-08-14 | 2019-11-05 | 北京信成未来科技有限公司 | A kind of general UHF/VHF micro-nano satellite tracking telemetry and command station and its implementation |
-
2018
- 2018-09-30 CN CN201821615166.4U patent/CN209002054U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110417459A (en) * | 2019-08-14 | 2019-11-05 | 北京信成未来科技有限公司 | A kind of general UHF/VHF micro-nano satellite tracking telemetry and command station and its implementation |
| CN110417459B (en) * | 2019-08-14 | 2022-03-25 | 北京信成未来科技有限公司 | Universal UHF/VHF micro-nano satellite measurement and control station and implementation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190618 Termination date: 20210930 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |