CN205792597U - A kind of C-DOCSIS CMTS of light output - Google Patents
A kind of C-DOCSIS CMTS of light output Download PDFInfo
- Publication number
- CN205792597U CN205792597U CN201620500891.1U CN201620500891U CN205792597U CN 205792597 U CN205792597 U CN 205792597U CN 201620500891 U CN201620500891 U CN 201620500891U CN 205792597 U CN205792597 U CN 205792597U
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- light
- amplification module
- frequency
- signal
- receive unit
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Abstract
This utility model relates to the C DOCSIS CMTS of a kind of light output, and including digital units and light Transmit-Receive Unit, light Transmit-Receive Unit includes descending amplification module, light emission module, Optical Receivers, up amplification module；Described digital units is connected with light Transmit-Receive Unit, and the descending amplification module in described smooth Transmit-Receive Unit is connected with light emission module, and described Optical Receivers is connected with up amplification module；This utility model simple in construction, easy for installation；By using light Transmit-Receive Unit, original radio frequency transmission is upgraded to optical transport, extends transmission distance, up to 20 kilometers；It is about 5W with time Transmit-Receive Unit power consumption, reduces Overall Power Consumption, extend service life.
Description
Technical field
This utility model belongs to technical field of photo communication, especially relates to the C-DOCSIS local side system of a kind of light output
System.
Background technology
The most commonly used C-DOCSIS local side apparatus is that radio frequency exports form, as the coaxial access network of broadcasting and TV
Local side apparatus uses.Fig. 1 is shown in by this equipment principle block diagram, is made up of digital units and analogue unit two parts, number
Word circuit completes IP signal and transfers the translation function of up-downgoing radiofrequency signal to, and analog circuit completes up-downgoing radio frequency letter
Number amplification and mixed function, this local side apparatus power consumption is big, total power consumption at about 80W, wherein digital units
About 40W, analogue unit about 40W；Not only power consumption is big, and power consumption causes greatly operating temperature higher,
Affect the life-span of electronic product.Further, since the form of radio frequency output, coaxial access network can only be connected and use,
The loss of coaxial cable level is big, and limited transmission distance, typically at about 100 meters.Based on above 2 reasons,
Have impact on the extensive application of C-DOCSIS local side.
For above-mentioned technical problem, therefore need to improve.
Utility model content
The purpose of this utility model is the C-DOCSIS CMTS providing a kind of light to export, to solve above-mentioned skill
Art problem.
This utility model solves the technical scheme that its technical problem is used: the C-DOCSIS office of a kind of light output
End system, including digital units and light Transmit-Receive Unit, light Transmit-Receive Unit includes descending amplification module, light emission mould
Block, Optical Receivers, up amplification module；Described digital units is connected with light Transmit-Receive Unit, and described light is received and dispatched
Descending amplification module in unit is connected with light emission module, and described Optical Receivers is connected with up amplification module.
As a kind of preferred version of the present utility model, described digital units has included IP signal and radiofrequency signal
Conversion；Light Transmit-Receive Unit has included the conversion of radiofrequency signal and optical signal.
As a kind of preferred version of the present utility model, described radiofrequency signal includes corresponding with descending amplification module
Downlink radio-frequency signal and the upstream radio-frequency signal corresponding with up amplification module；The frequency of described downlink radio-frequency signal
Carrying a width of 87～1000MHz, the frequency bandwidth of described upstream radio-frequency signal is 5～65MHz.
As a kind of preferred version of the present utility model, described descending amplification module uses RFMD company of the U.S.
CGA7718Z recommends module, amplifies for realizing the radio frequency in 87～1000MHz frequency ranges.
As a kind of preferred version of the present utility model, described up amplification module uses TRIQUINT company of the U.S.
TAT7457 type radio frequency amplifier tube, amplify for realizing radio frequency in 5～65MHz frequency ranges.
As a kind of preferred version of the present utility model, described light emission module, use Xiamen Bei Lai company
BLLD-PSA2-D3 type laser instrument, adjusts for realizing the light of the downlink radio-frequency signal of 87～1000MHz frequency bandwidths
System launches output.
As a kind of preferred version of the present utility model, described Optical Receivers, use Xiamen Bei Lai company
BLPD-PSA2-75B type PIN is managed, it is achieved uplink optical signal is demodulated into the radiofrequency signal of 5～65MHz frequency bandwidths.
Beneficial effects of the present invention: this utility model simple in construction, easy for installation；By using light Transmit-Receive Unit,
Original radio frequency transmission is upgraded to optical transport, extends transmission distance, up to 20 kilometers；With time Transmit-Receive Unit
Power consumption is about 5W, reduces Overall Power Consumption, extends service life.
Accompanying drawing explanation
Fig. 1 is common C-DOCSIS local side theory diagram.
Fig. 2 is the C-DOCSIS CMTS theory diagram of this kind of light of the present utility model output.
Reference: digital units 1, light Transmit-Receive Unit 2, descending amplification module 3, light emission module 4, light connects
Receive module 5, up amplification module 6.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model embodiment is elaborated.
With reference to Fig. 2, the C-DOCSIS CMTS of a kind of light output, including digital units 1 and light Transmit-Receive Unit
2, light Transmit-Receive Unit 2 includes descending amplification module 3, light emission module 4, Optical Receivers 5, up amplification
Module 6；Described digital units 1 is connected with light Transmit-Receive Unit 2, the descending amplification in described smooth Transmit-Receive Unit 2
Module 3 is connected with light emission module 4, and described Optical Receivers 5 is connected with up amplification module 6.
By using light Transmit-Receive Unit 2, original radio frequency transmission is upgraded to optical transport, extends transmission distance,
Up to 20 kilometers；It is about 5W with time Transmit-Receive Unit power consumption, reduces Overall Power Consumption, extend service life.
Digital units completes the conversion of IP signal and radiofrequency signal, and radiofrequency signal includes downlink radio-frequency signal and up
Radiofrequency signal, downlink radio-frequency signal frequency bandwidth is generally 87～1000MHz, upstream radio-frequency signal frequency bandwidth
Generally 5～65MHz.
Light Transmit-Receive Unit completes the conversion of radiofrequency signal and optical signal, is modulated into light after downlink radio-frequency signal is amplified
Signal exports, and receives after demodulation uplink optical signal amplifies again and inputs digital units.
Descending amplification module 3 uses the CGA7718Z of RFMD company of the U.S. to recommend module, be used for realizing 87～
Radio frequency in 1000MHz frequency range amplifies；Up amplification module 6 uses TRIQUINT company of the U.S.
TAT7457 type radio frequency amplifier tube, amplifies for realizing the radio frequency in 5～65MHz frequency ranges；Light emission module
4, use the BLLD-PSA2-D3 type laser instrument of Xiamen Bei Lai company, be used for realizing 87～1000MHz frequency bands
Output is launched in the light modulation of wide downlink radio-frequency signal；Optical Receivers 5, uses Xiamen Bei Lai company
BLPD-PSA2-75B type PIN is managed, it is achieved uplink optical signal is demodulated into the radiofrequency signal of 5～65MHz frequency bandwidths.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this reality
With novel；Multiple amendment to these embodiments will be apparent from for those skilled in the art,
Generic principles defined herein can be in the case of without departing from spirit or scope of the present utility model, at it
Its embodiment realizes；Therefore, this utility model is not intended to be limited to the embodiments shown herein, and
It is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Although the most more employing reference in figure: digital units 1, light Transmit-Receive Unit 2, descending amplification
Module 3, light emission module 4, Optical Receivers 5, up amplification module 6 term such as grade, but be not precluded from using
The probability of other term；Use these terms to be only used to more easily to describe and explain of the present utility model
Essence；It is all contrary with this utility model spirit for being construed as any additional restriction.
Claims (7)
1. the C-DOCSIS CMTS of a light output, it is characterised in that: include digital units (1) and light transmitting-receiving
Unit (2), light Transmit-Receive Unit (2) includes descending amplification module (3), light emission module (4), light-receiving mould
Block (5), up amplification module (6)；Described digital units (1) is connected with light Transmit-Receive Unit (2), described
Descending amplification module (3) in light Transmit-Receive Unit (2) is connected with light emission module (4), described light-receiving mould
Block (5) is connected with up amplification module (6).
The C-DOCSIS CMTS of a kind of light the most according to claim 1 output, it is characterised in that: described number
Word cell (1) has included the conversion of IP signal and radiofrequency signal；Light Transmit-Receive Unit (2) has included radio frequency
Signal and the conversion of optical signal.
The C-DOCSIS CMTS of a kind of light the most according to claim 2 output, it is characterised in that penetrate described in:
Frequently signal includes the downlink radio-frequency signal corresponding with descending amplification module (3) and right with up amplification module (6)
The upstream radio-frequency signal answered；The frequency bandwidth of described downlink radio-frequency signal is 87～1000MHz, described up penetrates
Frequently the frequency bandwidth of signal is 5～65MHz.
The C-DOCSIS CMTS of a kind of light the most according to claim 3 output, it is characterised in that: under described
Row amplification module (3) uses the CGA7718Z of RFMD company of the U.S. to recommend module, is used for realizing 87～1000MHz
Radio frequency in frequency range amplifies.
The C-DOCSIS CMTS of a kind of light the most according to claim 3 output, it is characterised in that: on described
Row amplification module (6) uses the TAT7457 type radio frequency amplifier tube of U.S. TRIQUINT company, be used for realizing 5～
Radio frequency in 65MHz frequency range amplifies.
The C-DOCSIS CMTS of a kind of light the most according to claim 1 output, it is characterised in that: described light
Transmitter module (4), uses the BLLD-PSA2-D3 type laser instrument of Xiamen Bei Lai company, be used for realizing 87～
Output is launched in the light modulation of the downlink radio-frequency signal of 1000MHz frequency bandwidth.
The C-DOCSIS CMTS of a kind of light the most according to claim 1 output, it is characterised in that: described light
Receiver module (5), uses the BLPD-PSA2-75B type PIN pipe of Xiamen Bei Lai company, it is achieved uplink optical signal
It is demodulated into the radiofrequency signal of 5～65MHz frequency bandwidths.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620500891.1U CN205792597U (en) | 2016-05-27 | 2016-05-27 | A kind of C-DOCSIS CMTS of light output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620500891.1U CN205792597U (en) | 2016-05-27 | 2016-05-27 | A kind of C-DOCSIS CMTS of light output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205792597U true CN205792597U (en) | 2016-12-07 |
Family
ID=57408809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620500891.1U Expired - Fee Related CN205792597U (en) | 2016-05-27 | 2016-05-27 | A kind of C-DOCSIS CMTS of light output |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205792597U (en) |
-
2016
- 2016-05-27 CN CN201620500891.1U patent/CN205792597U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20190527 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |