CN109743557A - A kind of novel miniaturization KU wave band multi-user's DCSS tuner - Google Patents
A kind of novel miniaturization KU wave band multi-user's DCSS tuner Download PDFInfo
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- CN109743557A CN109743557A CN201910107415.1A CN201910107415A CN109743557A CN 109743557 A CN109743557 A CN 109743557A CN 201910107415 A CN201910107415 A CN 201910107415A CN 109743557 A CN109743557 A CN 109743557A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The present invention relates to a kind of novel miniaturization KU wave band multi-user's DCSS tuners, including feed, waveguide pipe, multilayer circuit board, the L-type pin connecting with multilayer circuit board and I type pin；Waveguide pipe is outer circle hollow structure, and front end connects feed, and waveguide pipe Basolateral forms the circuit mounting base for placing multilayer circuit board；Waveguide pipe bottom inner portion is rectangle plane, inside has the first ladder, the second ladder, third ladder, the first ladder, the second ladder are in same one side, third ladder and the first ladder and the second ladder spatial vertical；L-type pin is located at the first rank ladder section, and I type pin is located at second-order ladder section, and L-type pin and I type pin are vertical at 90 ° of space inside waveguide pipe.The present invention cancels the structure design of spacer rod, simplifies product processes, realizes product miniaturization.Have also been proposed to realize supports multiple user's set-top boxes to use in single coaxial cable, and has multi-functional selection.
Description
[technical field]
The present invention relates to satellite TV reception technologies, and in particular to a kind of novel miniaturization KU wave band multi-user's DCSS high frequency
Head.
[background technique]
Currently, the mankind are very extensive by satellite transmission signal, especially receive satellite broadcasting television letter using tuner
Number field.For the band limits of KU wave band in 10700MHz between 12750MHz, KU wave band tuner is exactly to receive KU wave band
Downward signal of satellite, faint vision signal is modified and is amplified, shields interference signal to guarantee the stability of image,
Export the demodulated reduction TV signal of intermediate-freuqncy signal of 950~2150MHz.
It is used currently, 1 user's set-top box (STB) can only be met by 1 cable transmission signal, if to multiple users
It provides and services necessary rewiring and hardware installation, this tuner operation cost is high, and the market competitiveness is low.
Existing KU wave band tuner as shown in Figure 1, include feed 10, waveguide pipe 20, circuit device and connector, it is most common
Be the integrated circular waveguide of bipolarity feed, it is circle that waveguide pipe 20, which is a kind of hollow, inner wall smooth, cross section,
Metal catheter, and internal symmetrical centre has the spacer rod for playing polarization isolation 30.Electromagnetism in circular waveguide
Field is circumferentially in standing wave distribution with radial direction, in transmission process polarization can occur and revolve because of minimum inhomogeneities
Turn, since circular waveguide has axial symmetry, spacer rod 30 is passed across into circular waveguide inner wall center and in horizontal polarization
Between probe 40 and vertical polarization probe 50, to keep polarized signal relatively stable.
In general, specific dimensions are made by iron plating nickel material in spacer rod 30, spacer rod 30 is done according to Standardization Process process
It is pressed together on inside circular waveguide for 2nd time.If there is no spacer rod 30 inside circular waveguide, horizontal polarization and vertical will lead to
Polarized electromagnetic wave interferes with each other, i.e., adjacent TV signal mutually gets two or more radio stations at once, and can not receive the TV programme of whole channels.And this
It is cumbersome that kind spacer rod 30 already leads to process flow.
In addition, the circuit board in high frequency tuner circuit device is single-layer double-side plate, there are commonly ROGERS plate (high-frequency ceramics
Plate), LNB33 plate (high frequency glass hydrocarbonization ceramic wafer), FR4 plate (glass-epoxy plate), 70 double-sided copper-clad 60 of plate,
Section is as shown in Figure 2.Usually in high frequency tuner circuit, wherein RF amplifying circuit ROGERS plate or LNB33 plate, IF are exported
Circuit FR4 plate, therefore often occur the circuit board composition splicing connection of multiple plates on the same product.It is spliced to form
Combination circuit plate, so that the process flow of product is more cumbersome, whole bigger than normal, high expensive cannot achieve product miniaturization.
Bulky in view of complex process, circuit boards such as above-mentioned single user, waveguide pipe circuit boards, present inventors have proposed one
Thus the completely new tuner technology of kind, this case generate.
[summary of the invention]
To solve the above problems, the purpose of the present invention is to provide a kind of novel miniaturization KU wave band multi-user's DCSS high frequencies
Head can cancel the structure design of spacer rod, simplify product processes, realize product miniaturization.It has also been proposed to realize
It supports multiple user's set-top boxes to use in single coaxial cable, and has multi-functional selection.
To achieve the above object, the present invention mainly adopts the following technical scheme that
A kind of novel miniaturization KU wave band multi-user's DCSS tuner, including feed, waveguide pipe, multilayer circuit board, with it is more
The L-type pin and I type pin of layer circuit board connection；Waveguide pipe is outer circle hollow structure, and front end connects feed, Basolateral
Form the circuit mounting base for placing multilayer circuit board；
Waveguide pipe bottom end closure and it is internal be rectangle plane, have symmetrical first ladder, second in the inner wall of rectangle plane
Ladder, third ladder, the first ladder, the second ladder are in same one side, third ladder and the first ladder and the second ladder spatial vertical；
L-type pin external notches protrude into installation, and horizontal position is located at the first rank ladder section, the insertion of I type pin external apertures, position
In second-order ladder section, L-type pin and I type pin are vertical at 90 ° of space inside waveguide pipe.
First ladder, the second ladder and the third ladder all respectively includes the tread and and square vertical with rectangle plane
The parallel terrace of shape plane, the first terrace, the second terrace, third terrace area reduce step by step.
The rectangle plane has long side and short side, and the first rank ladder, second-order ladder are located at long edge position and extend,
Third ladder is arranged from short side.
The fluting of the L-type pin, opens up in parallel along rectangle plane short side, and the 1/2 of the of length no more than short side of groove body
Distance.
The horizontal position of the L-type pin is in the corresponding regional scope of the first terrace.
The I type pin protrudes into 1/2 distance of of length no more than long side inside waveguide pipe.
The I type pin is located at the corresponding regional scope in second-order face.
The I type pin is vertical with third terrace.
The multilayer circuit board, including P piece, high frequency circuit board, audio line plate, Multi-layer force fit form.
The high frequency circuit board includes the first base material layer using ROGERS plate or LNB33 plate, overlays on the first base respectively
The copper clad layers of material layer upper and lower surface.
The copper clad layers for overlaying on first base material layer upper surface be top line layer, overlay on first base material layer lower surface and
Copper clad layers with the bonding of P piece are the first middle line.
The audio line plate includes the second substrate layer using FR4 plate, overlays on the second substrate layer upper and lower surface respectively
Copper clad layers.
It is described to overlay on the second substrate layer upper surface and be the second middle line layer with the copper clad layers of P piece bonding, overlay on the
Two substrate layer lower surfaces and copper clad layers be wiring underlayer layer.
It include the string holes one covering copper perforation and being connected by top line layer and the first middle line on the multi-layer board,
Top line layer and the second middle line layer are covered into the connected string holes two of copper perforation, by top line layer and wiring underlayer layer
The connected string holes three of copper perforation is covered, by the string holes four of the first middle line and wiring underlayer layer covering copper perforation and being connected.
It include RF amplifying circuit, bandpass filter, low power consumption integrated circuit, digital signal collection on the multilayer circuit board
At circuit；RF amplifying circuit receives horizontal signal and vertical signal, after the amplification of RF amplifying circuit, then passes through bandpass filter
Output signal is sent into low power consumption integrated circuit mixing, and low power consumption integrated circuit is connected to digital signal integrated circuit, and last IF is defeated
It is connected to set-top box out.
The digital signal integrated circuit is that full frequency band captures satellite-signal superimposer, and internal structure includes being sequentially connected
Rf inputs, digital channel crossbar switch, 32 channels, channel superimposer, medium frequency output end.
The rf inputs are to receive the signal from low power consumption integrated circuit output, while carrying out modulus to signal
Conversion and digital signal automatic gain control, are intersected with realizing the optimum efficiency after signal analog-to-digital conversion and being transported to digital channel
Switch.
The digital channel crossbar switch is that any one frequency of the Any Digit signal in input is mapped to 32
Any one of a channel channel.
32 channels are the digital selection of signal progress and filtering by may be programmed formula to input, and independent defeated
It is sent to Signal averaging device.
The Signal averaging device is to pass through Digital Frequency Synthesize for selecting 32 transponders in the input of any radio frequency
Device, the selected frequency being converted into 950-2150MHz, and ensure that any combination is separated with output.
The medium frequency output end is the signal for receiving the output of Signal averaging device, and uses digital-to-analogue parallel operation conversion output 950-
The intermediate-freuqncy signal of 2150MHz.
The digital signal integrated circuit uses the BCM4554 integrated circuit of company, Botong.
The digital signal integrated circuit output connection triplexer, reconnects IF amplifier circuit output.
The bandwidth-limited circuit is also connected with low current collection into tuning circuit, forms simulation output.
Compared with prior art, the invention has the following beneficial effects:
1, the multilayer circuit board that uses of the present invention, it is more stable than the dielectric properties of single plate in existing industry and can expire
The requirement of sufficient multilayer circuit and IC design, which is that product up-gradation minimizes and number is integrated, has established solid foundation,
Low cost, the market demand of high-quality have been catered to simultaneously, have been promoted and applied for the first time in the field.
2, using circumference waveguide switch technology inside waveguide pipe of the invention, guided wave bottom of the tube is designed as rectangle plane,
Cooperate three ladders, circular cavity is converted into rectangular cavities, no spacer rod, open end is circle.L-type pin groove body is along square
The wide wall surface center line fluting of shape cavity is put into, since wide wall surface centerline only has longitudinal current, along wide wall surface middle line
Place fluting will not be influenced because cut off tube wall electric current fields inside amount distribution, otch will not outward radiant electromagnetic energy thus
Make distorted signals, horizontal polarization probe may be implemented and receive only longitudinal current signal, to avoid horizontal polarization and vertical polarization
Signal interfere with each other, the present invention has been carried out the technical issues of no spacer rod overcomes polarized signal to interfere.
3, the present invention is realized using the digital channel superimposing technique of digital signal integrated circuit and the circuit design of optimization
In single coaxial cable, multiple (16-32) user set-top boxes (STB) can be supported to use.Also propose that a kind of multifunctional circuit is set
Meter theory has output two kinds of functions of analog signal and digital signal, meets more than 91 a users and uses and support MoCA and high definition
Video reception.
[Detailed description of the invention]
Fig. 1 is existing tuner structure schematic diagram；
Fig. 2 is the board structure of circuit figure used in existing tuner；
Fig. 3 is the stereoscopic schematic diagram of present pre-ferred embodiments；
Fig. 4 is the A-A of Fig. 3 to sectional view；
Fig. 5 is the B-B direction sectional view of Fig. 3；
Fig. 6 is the stereoscopic schematic diagram of Fig. 5；
Fig. 7 is the probe installation schematic plan view of present pre-ferred embodiments；
Fig. 8 is the probe installation schematic internal view of present pre-ferred embodiments；
Fig. 9 is multilayer circuit board schematic cross-section in present pre-ferred embodiments；
Figure 10 is that multilayer circuit board runs through schematic cross-section in present pre-ferred embodiments；
Circuit module schematic diagram in Figure 11 present pre-ferred embodiments；
Figure 12 is digital signal integrated circuit schematic in present pre-ferred embodiments；
Figure 13 is another circuit module schematic diagram of present pre-ferred embodiments；
Figure 14 is triplexer circuit schematic diagram in present pre-ferred embodiments.
[specific embodiment]
It please refers to shown in Figure of description 3-14, the invention will be described in further detail.
A kind of novel miniaturization KU wave band multi-user's DCSS tuner, the component being mainly concerned with includes feed 1, waveguide pipe
2, L-type pin 3, I type pin 4, multilayer circuit board 5.One end of waveguide pipe 2 connects feed 1, and feed 1 is routine techniques, here
It does not repeat them here.The other end outer wall of waveguide pipe 2 forms a circuit mounting base 51, interior to install fixed multilayer circuit board 5.L-type
Pin 3, I type pin 4 are connected and fixed with multilayer circuit board 5.
One of present invention innovation is waveguide pipe 2, and the bottom end of waveguide pipe 2 is enclosed construction, and inside forms a rectangle
Plane 21, rectangle plane 21 have long side and short side, and along the position of two long sides, the inner wall two sides of waveguide pipe 2 form the first ladder
22, the second ladder 23 forms third ladder 24, the first ladder 22, second-order along the inner wall two sides of two short side position waveguide pipes 2
Ladder 23 forms spatial vertical state with third ladder 24.First ladder 22 includes the first tread 221 and the first terrace 222, second
Ladder 23 includes that the second tread 231 and the second terrace 232, third ladder 24 include third tread 241 and third terrace 242, the
One tread 221, the second tread 231, third tread 241 are vertical with rectangle plane 21, the first terrace 222, the second terrace 232,
Third terrace 242 is parallel with rectangle plane 21, and the first terrace 222, the second terrace 232, third terrace 242 successively face step by step
Product reduces.
The outer wall of waveguide pipe 2 forms circuit panel seat 51 at bottom position, and L-type pin 3, I type pin 4 are connected to
On multilayer circuit board 5, goed deep into inside waveguide pipe 2 by circuit board installation position 8.L-type pin 3 is that fluting protrudes into, I type pin 4
Aperture insertion.
3 specific location of L-type pin is in 2 bottom end of waveguide pipe along the short side parallel slots of rectangle plane 21, and groove body does not surpass
1/2 position line of rectangle plane 21 is crossed, L-type pin 3 includes vertical component effect 31 and horizontal part 32, and 31 outer end of vertical component effect hangs fixation
In circuit panel seat 51, horizontal part 32 is extend into inside waveguide pipe 2,1/2 position line of of length no more than rectangle plane 21.Groove body is opened
It is located at the band of position that the first tread 221 is covered, this is no more than the first tread 221 depending on L-type pin 3 and is covered
The band of position.
The vertical third tread 241 of the aperture of I type pin 4, and in the area of space that the second tread 231 is covered.I
The 1/2 of the long side of of length no more than rectangle plane 21 of the type pin 4 inside waveguide pipe 2.In this way in the inside of waveguide pipe 2, L
It is vertical that type pin 3, I type pin 4 form 90 ° of space.
The working principle of tuner of the present invention is: one section of poled waveguide signal that the feed 1 of reflector antenna receives, warp
Separation number is reached 20dB or more, to ensure in identical frequency band by horizontal (V) and vertical (H) Signal separator by dual polarization waveguide
Two sets different signals of transmission interact interference, then pass through 90 degree of phase difference of induction pin reception level (V) respectively again
It with the radiofrequency signal of vertical (H), amplifies, is mixed, then amplify and divide after obtaining the satellite TV signal of our needs
It Tong Guo not single channel or multiple-connector output.
Circular cavity is changed to rectangular cavities by 2 bottom of waveguide pipe, can be to avoid the signal phase of horizontal polarization and vertical polarization
The technical issues of mutually interference, realization overcomes polarized signal to interfere without spacer rod.
Multilayer circuit board 5 mainly includes P piece 52, high frequency circuit board 53, audio line plate 54 referring to figure Fig. 9-10.
P piece 52 is a separation layer, and thickness commonly uses 0.1mm generally within the scope of 0.08-0.12mm, and material can be selected
PP resin material selects raw benefit S1000B in the present embodiment.P piece 52 is used to isolation signals, prevents upper and lower two different plates
In addition signal interference also acts as the effect for bonding two various boards up and down.
It is high frequency circuit board 53 above P piece 52, high frequency circuit board 53 is followed successively by top line layer 531, from top to bottom
One substrate layer 532, the first middle line layer 533.Top line layer 531 is mainly made of copper foil etching, for cabling, connects
Ground etc..First base material layer 532 can select the ROGERS plate (high-frequency ceramic plate) that can reach high band requirement or raw benefit LNB33 plate
Substrate, the first middle line layer 533 be also copper foil etching composition, contacted with P piece 52, for being grounded and walking route.First base
Material layer 532 is with a thickness of 500-520um, and top line layer 531, the first middle line layer 533 are with a thickness of 17.5um.
It is low-frequency channel plate 54 below P piece 52, is followed successively by the second middle line layer 541, the second substrate layer from top to bottom
542 and wiring underlayer layer 543.Second middle line layer 541 and wiring underlayer layer 33 are also copper foil etching composition, for being grounded and
Cabling.Second substrate layer 542 is the substrate of FR4 plate (glass-epoxy plate), because this layer does not walk the letter of high band
Number route, so the plate that can reach high band requirement is not needed, using FR4 plate.
Wherein for the second substrate layer 542 with a thickness of 160-170um, the second middle line layer 541 and wiring underlayer layer 543 are thick
Degree is 17.5um.
Properties of product to work it out can reach requirement, and the route for passing through KU waveband radio frequency signal is all placed in the present invention
On the top line layer 531 of high frequency circuit board 53, low-frequency channel plate 54 are crossed DC route and ground connection.And 531 He of top line layer
The the first middle line layer 533 contacted with P piece 52 is connected with copper via hole is covered, and forms string holes 1.Top line layer 531 and and P
The second middle line layer 541 that piece 52 contacts is connected with copper via hole is covered, and forms string holes 2 56.Top line layer 531 and bottom line
Road floor 543 is connected with copper via hole is covered, and forms string holes 3 57.The the first middle line layer 533 and wiring underlayer layer contacted with P piece
543 are connected with copper via hole is covered, and form string holes 4 58.Being connected in this way can preferably be such that product signal does not interfere, and performance also can
That does is more preferable.
The plate of unlike material is laminated into a monolith plate by multilayer circuit board 5, not only meets high frequency requirements, but also can use
The plate of low cost, and there is no any influence to product characteristic.The splicing construction arranged side by side of original different plates, lamination is converted to
Structure simplifies line connection between different plates, and can significantly reduce the area of circuit board, and it is small to be conducive to product
Type is used widely and is promoted.
And referring to Figure 11 to Figure 14, the circuit on multilayer circuit board 5 includes including RF amplifying circuit 61, bandpass filter
62, low power consumption integrated circuit 63, digital signal integrated circuit 64.
RF amplifying circuit 61 receives horizontal signal and vertical signal, filters after the amplification of RF amplifying circuit, then through band logical
Wave device 62 is sent into low power consumption integrated circuit 63, by the sheet of the radiofrequency signal of bandpass filter output and low power consumption integrated circuit 63
After vibration is mixed, 250-2350MHz signals are exported, low power consumption integrated circuit 63 is connected to digital signal integrated circuit 64, finally
IF (intermediate-freuqncy signal) output is connected to set-top box 65.The operating voltage of RF amplifying circuit 61 passes through low power consumption integrated circuit 63 simultaneously
It is controlled.
Digital signal integrated circuit uses the BCM4554 integrated circuit of company, Botong in the present embodiment, is a kind of full frequency band
Capture satellite-signal superimposer.Design uses in the present invention, and internal mainly includes following module: rf inputs 641,
Digital channel crossbar switch 642,32 channels 643, channel superimposer 644, medium frequency output ends 645.
Rf inputs 641 are to receive the signal exported from low power consumption integrated circuit 63, while carrying out modulus to signal
Conversion and digital signal automatic gain control, are intersected with realizing the optimum efficiency after signal analog-to-digital conversion and being transported to digital channel
Switch 642.Digital channel crossbar switch 642 is that any one frequency of the Any Digit signal in input is mapped to 32 letters
Any one of road 643 channel, without any restrictions.32 channels 643 be by may be programmed formula to the signal of input into
The selection of line number word and filtering, and independently it is transported to Signal averaging device 644.Signal averaging device 644 is in the input of any radio frequency
32 transponders are selected, by digital frequency synthesizer, the selected frequency being converted into 950-2150MHz, and ensure to appoint
What combination and output separate.Medium frequency output end 645 is the signal for receiving Signal averaging device 644 and exporting, and is turned using digital-to-analogue parallel operation
Change the intermediate-freuqncy signal of output 950-2150MHz.Set-top box 65 is connected to after output.
Digital channel superimposing technique is used in the present embodiment, is converted by high-speed ADC (modulus) converter and DAC (digital-to-analogue)
Device is converted into intermediate-freuqncy signal (IF) output to user's set-top box (STB) from the signal of satellite reception for all, and the present embodiment passes through
Full-digital circuit control demodulation can reset operating mode (i.e. dynamic or static) by programmable device, and dynamic mode supports 16-32
A user receives the demand of satellite-signal simultaneously, and static schema supports unlimited user, provides completely flexible channel selection, supports
More set-top boxes, single line are widely used.
It is another embodiment of the present invention turning also now to Figure 13 and Figure 14, compares Figure 11 and Figure 12, it is integrated in digital signal
Electricity connects a triplexer 66, exports using intermediate-freuqncy signal after IF amplifier circuit 67 after 64 outputs.Meanwhile then band logical filter
Wave device circuit 62 is also connected with low current collection into tuning circuit 68, forms analog signal output all the way.
Triplexer 66 as shown in figure 14, inside use lc circuit structure, by an input signal be changed into three it is identical
Output signal.Low current collection is by the radiofrequency signal of bandpass filter output and low current collection into tuning circuit at tuning circuit 68
After 68 local oscillator is mixed, 950-2150MHz intermediate-freuqncy signals are exported.
Therefore in embodiments, can both there be analog signal output all the way, also there can be multi-path digital signal defeated (again)
Out, and on above-mentioned 32 user bases, then meet a user more than 90 while receiving the multiple functions of satellite-signal.
Above specific embodiment is only the preferred embodiment of this creation, all in this wound not to limit this creation
Any modification, equivalent substitution, improvement and etc. done within the spirit and principle of work, should be included in this creation protection scope it
It is interior.
Claims (10)
1. a kind of novel miniaturization KU wave band multi-user's DCSS tuner, it is characterised in that: including feed, waveguide pipe, multilayer electricity
Road plate, the L-type pin being connect with multilayer circuit board and I type pin；Waveguide pipe is outer circle hollow structure, front end connection feedback
Source, Basolateral form the circuit mounting base for placing multilayer circuit board；
Waveguide pipe bottom end closure and it is internal be rectangle plane, the inner wall of rectangle plane have symmetrical first ladder, the second ladder,
Third ladder, the first ladder, the second ladder are in same one side, third ladder and the first ladder and the second ladder spatial vertical；L-type
Pin external notches protrude into installation, and horizontal position is located at the first rank ladder section, and the insertion of I type pin external apertures is located at
Second-order ladder section, L-type pin and I type pin are vertical at 90 ° of space inside waveguide pipe.
2. a kind of novel miniaturization KU wave band multi-user's DCSS tuner as described in claim 1, it is characterised in that: described
First ladder, the second ladder and third ladder all respectively include the tread vertical with rectangle plane and the rank parallel with rectangle plane
Face, the first terrace, the second terrace, third terrace area reduce step by step；The rectangle plane has long side and short side, the first rank
Ladder, second-order ladder are located at long edge position and extend, and third ladder is arranged from short side.
3. a kind of novel miniaturization KU wave band multi-user's DCSS tuner as described in claim 1, it is characterised in that: described
The fluting of L-type pin opens up in parallel along rectangle plane short side, and 1/2 distance of the of length no more than short side of groove body；L-type pin
Horizontal position in the corresponding regional scope of the first terrace.
4. a kind of novel miniaturization KU wave band multi-user's DCSS tuner as described in claim 1, it is characterised in that: described
I type pin protrudes into 1/2 distance of of length no more than long side inside waveguide pipe；It is corresponding that the I type pin is located at second-order face
Regional scope；The I type pin is vertical with third terrace.
5. a kind of novel miniaturization KU wave band multi-user's DCSS tuner as described in claim 1, it is characterised in that: described
Multilayer circuit board, including P piece, high frequency circuit board, audio line plate, Multi-layer force fit form.
6. a kind of novel miniaturization KU wave band multi-user's DCSS tuner as described in claim 1, it is characterised in that: described
High frequency circuit board includes the first base material layer using ROGERS plate or LNB33 plate, overlays on first base material layer upper and lower surface respectively
Copper clad layers；The copper clad layers of first base material layer upper surface be top line layer, overlay on first base material layer lower surface and with P piece bonding
Copper clad layers are the first middle line；The audio line plate includes the second substrate layer using FR4 plate, overlays on the second base respectively
The copper clad layers of material layer upper and lower surface；Second substrate layer upper surface and with P piece bonding copper clad layers be the second middle line layer, overlay on
Second substrate layer lower surface and copper clad layers be wiring underlayer layer.
7. a kind of novel miniaturization KU wave band multi-user's DCSS tuner as described in claim 1, it is characterised in that: described
Include that top line layer and the first middle line are covered into the connected string holes one of copper via hole on multi-layer board, by top line layer and
Second middle line layer covers the connected string holes two of copper via hole, and top line layer and wiring underlayer layer are covered what copper via hole was connected
String holes three, by the string holes four of the first middle line and wiring underlayer layer covering copper via hole and being connected.
8. a kind of novel miniaturization KU wave band multi-user's DCSS tuner as described in claim 1, it is characterised in that: described
It include RF amplifying circuit, bandpass filter, low power consumption integrated circuit, digital signal integrated circuit on multilayer circuit board；RF amplification
Circuit receives horizontal signal and vertical signal, after the amplification of RF amplifying circuit, then by bandpass filter output signal, is sent into
Low power consumption integrated circuit mixing, low power consumption integrated circuit are connected to digital signal integrated circuit, and last IF output is connected to machine top
Box；The digital signal integrated circuit is that full frequency band captures satellite-signal superimposer, and internal structure includes sequentially connected penetrates
Frequency input terminal, digital channel crossbar switch, 32 channels, channel superimposer, medium frequency output end.
9. a kind of novel miniaturization KU wave band multi-user's DCSS tuner as claimed in claim 8, it is characterised in that: described
Rf inputs are to receive the signal from low power consumption integrated circuit output, while carrying out analog-to-digital conversion and digital signal to signal
Automatic growth control, to realize the optimum efficiency after signal analog-to-digital conversion and be transported to digital channel crossbar switch；
The digital channel crossbar switch is that any one frequency of the Any Digit signal in input is mapped to 32 letters
Any one of road channel；
32 channels are to carry out digital selection and filtering to the signal of input by may be programmed formula, and be independently transported to
Signal averaging device；
The Signal averaging device is will by digital frequency synthesizer for 32 transponders of selection in the input of any radio frequency
It is converted to the selected frequency in 950-2150MHz, and ensures that any combination is separated with output；
The medium frequency output end is the signal for receiving the output of Signal averaging device, and uses digital-to-analogue parallel operation conversion output 950-
The intermediate-freuqncy signal of 2150MHz.
10. a kind of novel miniaturization KU wave band multi-user's DCSS tuner as claimed in claim 8 or 9, it is characterised in that: institute
The digital signal integrated circuit output connection triplexer stated, reconnects IF amplifier circuit output；The bandwidth-limited circuit
Low current collection is also connected with into tuning circuit, forms simulation output.
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| CN113114961A (en) * | 2021-04-08 | 2021-07-13 | 珠海佳讯创新科技股份有限公司 | High-frequency tuner based on cable transmission and distribution digital satellite signal technology |
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| CN109743557B (en) | 2023-11-28 |
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