CN109714499A - A kind of automatically controlled equalization compensation device of multiband - Google Patents
A kind of automatically controlled equalization compensation device of multiband Download PDFInfo
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Abstract
A kind of automatically controlled equalization compensation device of multiband, first resistor connects to form the first branch with second resistance, second capacitor connects to form second branch with the second inductance, third capacitor connects to form third branch with third inductance, first capacitor, the first branch, second branch and third branch circuit parallel connection, it is characterized by also including the first inductor modules, 4th inductor module, 6th capacitance module, and the 7th capacitance module, first inductor module connects to form the 4th branch with the 7th capacitance module, 4th branch is also in parallel with first capacitor, 4th inductor module latter end ground connection in parallel with the 6th capacitance module, first inductor module, 4th inductor module, 6th capacitance module, and the 7th at least one in capacitance module be inductance value or the variable module of capacitance.The automatically controlled equalization compensation device of the multiband is lower without plug-in module, cost and maintenance difficulties.
Description
Technical field
The present invention relates to cable TV network technical fields, and in particular to a kind of automatically controlled equalization compensation device of multiband.
Background technique
Automatically controlled equalization compensation device is generally provided in the upstream amplifier of cable television (abbreviation CATV) network to be used for
Compensate the decaying of CATV uplink signal.The circuit diagram of existing automatically controlled equalization compensation device is as shown in Figure 1, include first resistor
R1, second resistance R2,3rd resistor R3, first capacitor C1, the second capacitor C2, third capacitor C3, the 4th capacitor C4, the 5th capacitor
C5, the 6th capacitor C6, the 7th capacitor C7, the first inductance L1, the second inductance L2, third inductance L3, the 4th inductance L4, this is automatically controlled
The resistance for the compensation device that weighs, capacitor, inductance element parameter is fixed, and is all the frequency response according to a certain special frequency band f1
What characteristic was designed, the compensation waveform of output is as shown in Figure 2；In this way in the CATV uplink product of cable TV network
Upgrading is when needing replacing frequency band, such as when replacement is to frequency band f2, then need frequency response characteristic for frequency band f2 to it is automatically controlled
The component parameters of weighing apparatus compensation device are redesigned, and the compensation waveform of output is as shown in figure 3, on the compensation waveform and CATV
The stacking chart of row signal is as shown in Figure 4.
It is directed to the CATV uplink signal of different frequency bands at present, it is next real to plug automatically controlled equalization compensation device generally by replacement
Existing.But due to needing to be equipped with corresponding plug-in module for different frequency bands, so that higher cost, and use pluggable mode
Make to operate it is very inconvenient, will be so that cost and maintenance difficulties be further and with the increase of amplifier and node usage quantity
Increase.
Summary of the invention
The technical problem to be solved by the present invention is providing a kind of lower more without plug-in module, cost and maintenance difficulties
The automatically controlled equalization compensation device of frequency band.
The technical solution of the invention is as follows: a kind of automatically controlled equalization compensation device of multiband, including main control module, the first electricity
Resistance, second resistance, 3rd resistor, first capacitor, the second capacitor, third capacitor, the 4th capacitor, the 5th capacitor, the second inductance,
Three inductance, the first resistor connect to form the first branch with second resistance, and second capacitor connects to be formed with the second inductance
Second branch, the third capacitor connect to form third branch with third inductance, the first capacitor, the first branch, second
Road and third branch circuit parallel connection, input signal pass through the 4th capacitor after be electrically connected with one end of first capacitor, first capacitor it is another
By the 5th capacitor output signal, the first resistor, second resistance, 3rd resistor are fixed resistance at end, first electricity
Appearance, the second capacitor, third capacitor, the 4th capacitor, the 5th capacitor are fixed capacity, and second inductance, third inductance are
Fixed inductance, it is characterised in that: further include the first inductor module, the 4th inductor module, the 6th capacitance module and the 7th capacitor
Module, first inductor module connect to form the 4th branch with the 7th capacitance module, the 4th branch also with first capacitor
Parallel connection, the 4th inductor module latter end in parallel with the 6th capacitance module are grounded, are electrically connected after other end series connection 3rd resistor
To the junction of first resistor and second resistance, first inductor module, the 4th inductor module, the 6th capacitance module and
At least one in 7th capacitance module is the module that inductance value or capacitance can be changed, remaining is fixed for inductance value or capacitance
Module, the variable module of the inductance value or capacitance is electrically connected for controlling corresponding module by main control module with main control module
Inductance value or capacitance variation.
After adopting the above structure, the invention has the following advantages that
The automatically controlled equalization compensation device of multiband of the present invention is by one or more fixed inductances, fixed capacity in the prior art
Variable inductance, variable capacitance are replaced with, then by the inductance value or capacitance variation of main control module control corresponding module, to reach
It is lower without plug-in module, cost and maintenance difficulties to the function for the frequency response characteristic for changing circuit under different frequency bands.
Preferably, the 6th capacitance module and the 7th capacitance module are the variable module of capacitance, the described 7th
Capacitance module includes numerical control tunable capacitor, and the 6th capacitance module includes varactor, the numerical control tunable capacitor and change
Hold diode to be electrically connected with main control module.The 7th fixed capacity in 4th branch in the prior art is replaced with electricity by the setting
The adjustable numerical control tunable capacitor of capacitance will replace with the adjustable transfiguration two of capacitance with the 6th fixed capacity of the 4th inductance in parallel
Then pole pipe can make numerical control tunable capacitor and varactor export variable capacitance by the control of main control module, so as to
Change the frequency response characteristic of circuit in different frequency bands, numerical control tunable capacitor is mainly adjusted medium-high frequency, adjustable range
Extensively, main adjustment effect is played, and varactor is preferable to the adjustment effect of high-frequency signal, plays accurate adjustment, numerical control is adjustable
Capacitor combines wide with frequency-tuning range with varactor, and the final signal waveform flatness come out that adjusts is more preferable,
Precision is higher.
Preferably, the numerical control tunable capacitor model PE64102, the 7th capacitance module further includes the 4th electricity
Resistance, the 5th resistance, the 6th resistance, the 7th capacitor, the 8th capacitor, the 9th capacitor, the tenth capacitor, the 7th inductance, the 4th electricity
Resistance, the 5th resistance, the 6th resistance are fixed resistance, and the 7th capacitor, the 8th capacitor, the 9th capacitor, the tenth capacitor are
Fixed capacity, the 7th inductance are fixed inductance, and the pin 2,5,8,11,13 of the numerical control tunable capacitor is grounded, the number
The pin 6,7 for controlling tunable capacitor is electrically connected for being electrically connected with first capacitor close to one end of input signal, and the numerical control is adjustable
The pin 9,10 of capacitor is electrically connected for being electrically connected with one end of the first inductance, the other end and first capacitor of first inductance
It is electrically connected close to one end of output signal, the pin 1,3,12 of the numerical control tunable capacitor passes through the 4th resistance, the 5th electricity respectively
Resistance, the 6th resistance are electrically connected with main control module, and the 4th resistance, the 5th resistance, the 6th resistance are electrically connected with main control module
Also respectively by the 7th capacitor, the 8th capacitor, the tenth capacity earth, the pin 4 of the numerical control tunable capacitor is sequentially connected in series for one end
It is grounded after 7th inductance and the 9th capacitor, the 7th inductance is also electrically connected with power supply VCC with the junction of the 9th capacitor.This
Seven capacitance module frequency-tuning ranges are wide, and function admirable is stablized, and preferably medium-high frequency can be adjusted.
Preferably, the varactor is voltage variable capacitance diode, the 6th capacitance module further includes the 6th electricity
Hold, the 7th resistance, the 8th inductance, the 11st capacitor, the 12nd capacitor, the 6th capacitor, the 11st capacitor, the 12nd capacitor
It is fixed capacity, the 7th resistance is fixed resistance, and the 8th inductance is fixed inductance, and the 3rd resistor is far from the
One resistance is grounded after connecting with one end of second resistance junction with the 6th capacitor, the connection of the 3rd resistor and the 6th capacitor
Place is electrically connected with one end of the 11st capacitor, and the other end of the 11st capacitor and the cathode of voltage variable capacitance diode are electrically connected
Connect, the plus earth of the voltage variable capacitance diode, the cathode of the voltage variable capacitance diode be also sequentially connected in series the 8th inductance and
It is electrically connected by A/D conversion module with main control module after 7th resistance, the junction of the 8th inductance and the 7th resistance is also logical
The 12nd capacity earth is crossed,.The varactor cell structure is simple, and required component is less, can be preferably to high-frequency signal
It is finely adjusted, keeps the signal flatness that finally adjusting comes out more preferable, precision is higher.
Preferably, the 4th inductor module is the module that inductance value can be changed, the 4th inductor module includes two-way
Switch selection chip, the 4th inductance, the 5th inductance, the 6th inductance, the 4th inductance, the 5th inductance, the 6th inductance are solid
Determine inductance, one end ground connection of the 4th inductance, the 5th inductance, the 6th inductance, the other end of the 4th inductance is electrically connected to
The junction of 3rd resistor and the 6th capacitor, the ungrounded end of the main control module, the 5th inductance, the 6th inductance, the 4th inductance
Be electrically connected with two-way switch selection chip, for selecting the 5th inductance of chip gating and the by main control module control two-way switch
One of both six inductance and the 4th inductance in parallel, the 5th inductance are different from the inductance value of the 6th inductance.The setting can
By switching gating the 5th inductance and the 6th inductance, thus from after the 4th inductance in parallel to obtain different inductance values, Lai Jinyi
Step improves frequency response characteristic to obtain the better waveform of flatness.
Preferably, further including phase inverter, there are two control terminal, the two-way switch for the two-way switch selection chip tool
Select one of control terminal of chip by linking together with another control terminal and being electrically connected with main control module after phase inverter.
The setting makes two control terminals only need a control signal i.e. controllable using phase inverter, saves the I/O control of main control module
Pin processed.
Preferably, further include the 9th inductance and the 18th capacitor, the 9th inductance is fixed inductance, the described 18th
Capacitor is fixed capacity, two control terminals of two-way switch selection chip link together after be by the 9th inductance and master
Module electrical connection is controlled, described two control terminals also pass through the 18th capacity earth after linking together.The setting may filter that interference,
Keep control signal more acurrate.
Preferably, further including the 15th capacitor and the 16th capacitor, the 15th capacitor and the 16th capacitor are
The ungrounded end of fixed capacity, the 5th inductance and the 6th inductance passes through the 15th capacitor and the 16th capacitor and two-way respectively
Switch selection chip electrical connection.The setting using the 15th capacitor and the 16th capacitor as capacitance, play logical exchange every
The effect of direct current makes to control more acurrate.
Preferably, further including the 17th capacitor, the 17th capacitor is fixed capacity, and the 4th the non-of inductance connects
Ground terminal selects chip to be electrically connected by the 17th capacitor with two-way switch.The setting using the 17th capacitor as capacitance,
Play the role of logical exchange stopping direct current, makes to control more acurrate.
Detailed description of the invention:
Fig. 1 is the circuit diagram of existing automatically controlled equalization compensation device；
Fig. 2 is the compensation waveform that existing automatically controlled equalization compensation device is exported in frequency band f1；
Fig. 3 is the compensation waveform that existing automatically controlled equalization compensation device is exported in frequency band f2；
Fig. 4 is the folded of the compensation waveform that existing automatically controlled equalization compensation device is exported in frequency band f2 and CATV uplink signal
Add schematic diagram；
Fig. 5 is the schematic diagram of the automatically controlled equalization compensation device of multiband of the present invention；
Fig. 6 is the circuit diagram of the automatically controlled equalization compensation device of multiband in the embodiment of the present invention 1；
Fig. 7 is the circuit diagram of the automatically controlled equalization compensation device of multiband in the embodiment of the present invention 2；
Fig. 8 is the circuit diagram of the automatically controlled equalization compensation device of multiband in the embodiment of the present invention 3；
Fig. 9 is the circuit diagram of the automatically controlled equalization compensation device of multiband in the embodiment of the present invention 4；
Figure 10 is the circuit diagram of the automatically controlled equalization compensation device of multiband in the embodiment of the present invention 5；
Figure 11 is the circuit diagram of the automatically controlled equalization compensation device of multiband in the embodiment of the present invention 6.
Specific embodiment
With reference to the accompanying drawing, and in conjunction with the embodiments the present invention is described further.
Embodiment 1:
As shown in Figure 5, Figure 6, the automatically controlled equalization compensation device of a kind of multiband, including main control module, first resistor R1, second
Resistance R2,3rd resistor R3, first capacitor C1, the second capacitor C2, third capacitor C3, the 4th capacitor C4, the 5th capacitor C5, second
Inductance L2, third inductance L3, the first resistor R1 connect to form the first branch with second resistance R2, the second capacitor C2 with
Second inductance L2 connects to form second branch, and the third capacitor C3 connects to form third branch with third inductance L3, and described
One capacitor C1, the first branch, second branch and third branch circuit parallel connection, input signal RFIN pass through electric with first after the 4th capacitor C4
Hold one end electrical connection of C1, the other end of first capacitor C1 passes through the 5th capacitor C5 output signal RFOUT, the first resistor
R1, second resistance R2,3rd resistor R3 are fixed resistance, the first capacitor C1, the second capacitor C2, third capacitor C3,
Four capacitor C4, the 5th capacitor C5 are fixed capacity, and the second inductance L2, third inductance L3 are fixed inductance, further include
First inductor module, the 4th inductor module, the 6th capacitance module and the 7th capacitance module, first inductor module and
Seven capacitance modules connect to form the 4th branch, and the 4th branch is also in parallel with first capacitor C1, the 4th inductor module with
6th capacitance module latter end in parallel is grounded, and is electrically connected to first resistor R1 and second resistance after other end series connection 3rd resistor R3
The junction of R2, first inductor module and the 4th inductor module are the fixed module of inductance value, the 7th capacitor mould
Block is the module that capacitance can be changed, and the 6th capacitance module is the fixed module of capacitance, and first inductor module is the
One fixed inductance L1, the 4th inductor module are the 4th fixed inductance L4, and the 6th capacitance module is the 6th fixed capacity
C6, the 7th capacitance module include numerical control tunable capacitor U1, the numerical control tunable capacitor U1 of the 7th capacitance module and master control
Module electrical connection, described main control module such as single-chip microcontroller, DSP etc. do not provide signal in figure.
The numerical control tunable capacitor U1 model PE64102, the 7th capacitance module further includes the 4th resistance R4, the 5th
Resistance R5, the 6th resistance R6, the 7th capacitor C7, the 8th capacitor C8, the 9th capacitor C9, the tenth capacitor C10, the 7th inductance L7, institute
Stating the 4th resistance R4, the 5th resistance R5, the 6th resistance R6 is fixed resistance, the 7th capacitor C7, the 8th capacitor C8, the 9th
Capacitor C9, the tenth capacitor C10 are fixed capacity, and the 7th inductance L7 is fixed inductance, the numerical control tunable capacitor U1's
Pin 2,5,8,11,13 is grounded, the electrical connection of the pin 6,7 of the numerical control tunable capacitor U1 for first capacitor C1 close to input
One end of signal RFIN is electrically connected, and the pin 9,10 of the numerical control tunable capacitor U1 is electrically connected for one end with the first inductance L1
Electrical connection, the other end of the first inductance L1 are electrically connected with first capacitor C1 close to one end of output signal RFOUT, the number
The pin 1,3,12 of tunable capacitor U1 is controlled respectively by the 4th resistance R4, the 5th resistance R5, the 6th resistance R6 and main control module
Pin SEN9, SCLK, SDAT electrical connection, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6 are electrically connected with main control module
One end also respectively by the 7th capacitor C7, the 8th capacitor C8, the tenth capacitor C10 ground connection, the numerical control tunable capacitor U1's draws
Foot 4 is grounded after being sequentially connected in series the 7th inductance L7 and the 9th capacitor C9, and the junction of the 7th inductance L7 and the 9th capacitor C9 is also
It is electrically connected with power supply VCC.
The 7th fixed capacity C7 in the 4th branch of the prior art is replaced with the adjustable numerical control of capacitance in the present embodiment can
Capacitor U1 is adjusted, the capacitance that then numerical control tunable capacitor U1 output can be made variable by the control of main control module, so as in difference
Frequency band change circuit frequency response characteristic.
Embodiment 2:
As shown in fig. 7, first inductor module and the 4th inductor module are the fixed module of inductance value, the described 7th
Capacitance module is the fixed module of capacitance, and the 6th capacitance module is the module that capacitance can be changed, the first inductance mould
Block is the first fixed inductance L1, and the 4th inductor module is the 4th fixed inductance L4, and the 7th capacitance module is the 7th solid
Determine capacitor C7, the 6th capacitance module includes varactor D1, the varactor D1 and master of the 6th capacitance module
Control module electrical connection.
The varactor D1 is voltage variable capacitance diode, and the 6th capacitance module further includes the 6th capacitor C6, the
Seven resistance R7, the 8th inductance L8, the 11st capacitor C11, the 12nd capacitor C12, the 6th capacitor C6, the 11st capacitor C11,
12nd capacitor C12 is fixed capacity, and the 7th resistance R7 is fixed resistance, and the 8th inductance L8 is fixed inductance, institute
State that the 6th capacitor C6 is in parallel with the 4th inductance L4, the 3rd resistor R3 is far from first resistor R1 and the junction second resistance R2
One end is grounded after connecting with the 6th capacitor C6, the junction of the 3rd resistor R3 and the 6th capacitor C6 and the 11st capacitor C11
One end electrical connection, the other end of the 11st capacitor C11 is electrically connected with the cathode of voltage variable capacitance diode, the voltage-controlled change
The plus earth for holding diode, after the cathode of the voltage variable capacitance diode is also sequentially connected in series the 8th inductance L8 and the 7th resistance R7
It is electrically connected by A/D conversion module with the pin REVISC2 of main control module, the connection of the 8th the inductance L8 and the 7th resistance R7
Place is also grounded by the 12nd capacitor C12.
In the present embodiment, the 6th fixed capacity C6 in parallel with the 4th fixed inductance L4 in the prior art is replaced with into capacitor
It is worth adjustable varactor D1, the capacitance that then varactor D1 output can be made variable by the control of main control module, from
And it can be in the frequency response characteristic of different frequency bands change circuit.
Embodiment 3:
As shown in figure 8, the 6th capacitance module and the 7th capacitance module are the fixed module of capacitance, described first
Inductor module is the fixed module of inductance value, and the 4th inductor module is the module that inductance value can be changed, the 6th capacitor mould
Block is the 6th fixed capacity C6, and the 7th capacitance module is the 7th fixed capacity C7, and first inductor module is first solid
Determine inductance L1.
4th inductor module includes two-way switch selection chip U2, the 4th inductance L4, the 5th inductance L5, the 6th inductance
L6, the 4th inductance L4, the 5th inductance L5, the 6th inductance L6 are fixed inductance, the 4th inductance L4, the 5th inductance
One end ground connection of L5, the 6th inductance L6, the other end of the 4th inductance L4 are electrically connected to 3rd resistor R3 and the 6th capacitor C6
Junction, the main control module, the 5th inductance L5, the 6th inductance L6, the 4th inductance L4 ungrounded end and two-way switch
Chip U2 electrical connection is selected, for gating the 5th inductance L5 and the 6th inductance by main control module control two-way switch selection chip U2
One of them is in parallel with the 4th inductance L4 by both L6, and the 5th inductance L5 is different from the inductance value of the 6th inductance L6, described double
The model MASW008801 of way switch selection chip U2；It further include phase inverter U3, the two-way switch selection chip U2 has
Two control terminals, one of control terminal of the two-way switch selection chip U2 after phase inverter U3 with another control terminal by connecting
It is connected together and is electrically connected with the pin REVSWISC1 of main control module；It further include the 9th inductance L9 and the 18th capacitor C18, institute
Stating after two-way switch selects two control terminals of chip U2 to link together is to be electrically connected by the 9th inductance L9 with main control module,
Described two control terminals are also grounded by the 18th capacitor C18 after linking together；It further include the 15th capacitor C15 and the 16th
Capacitor C16, the ungrounded end of the 5th inductance L5 and the 6th inductance L6 pass through the 15th capacitor C15 and the 16th capacitor respectively
C16 is electrically connected with two-way switch selection chip U2；It further include the 17th capacitor C17, the ungrounded end of the 4th inductance L4 is logical
The 17th capacitor C17 is crossed to be electrically connected with two-way switch selection chip U2.
In the present embodiment, the 4th fixed inductance L4 in parallel with the 6th fixed capacity C6 in the prior art is replaced with by double
Way switch selects two kinds of different inductions of chip U2 switching control, can also be changed to the inductance value of circuit, thus also can be
Change the frequency response characteristic of circuit at different frequency bands.
Embodiment 4:
As shown in figure 9, the 6th capacitance module and the 7th capacitance module are the variable module of capacitance, described first
Inductor module and the 4th inductor module are the fixed module of inductance value, and first inductor module is the first fixed inductance L1,
4th inductor module is the 4th fixed inductance L4, and the 7th capacitance module includes numerical control tunable capacitor U1, the described 6th
Capacitance module includes varactor D1, and the numerical control tunable capacitor U1 and varactor D1 are electrically connected with main control module.
6th capacitance module is same as Example 2, and the 7th capacitance module is same as Example 1.
In the present embodiment, the 7th fixed capacity C7 in the 4th branch in the prior art is replaced with into the adjustable number of capacitance
Tunable capacitor U1 is controlled, the sixth fixed capacity C6 in parallel with the 4th inductance L4 is replaced with into the adjustable varactor of capacitance
Then D1 can make numerical control tunable capacitor U1 and varactor D1 export variable capacitance by the control of main control module, thus
It can be in the frequency response characteristic of different frequency bands change circuit；Numerical control tunable capacitor U1 is mainly adjusted medium-high frequency, adjusts
Range is wide, plays main adjustment effect, and varactor D1 is preferable to the adjustment effect of high-frequency signal, plays accurate adjustment, will count
Control tunable capacitor U1 combines wide with frequency-tuning range with varactor D1, and the final signal waveform come out that adjusts is put down
Smooth degree is more preferable, and precision is higher.
Embodiment 5:
As shown in Figure 10, the 6th capacitance module and the 7th capacitance module are the variable module of capacitance, and described the
One inductor module is the fixed module of inductance value, and the 4th inductor module is the module that inductance value can be changed, first inductance
Module is the first fixed inductance L1, and the 7th capacitance module includes numerical control tunable capacitor U1, and the 6th capacitance module includes
Varactor D1, the 4th inductor module include two-way switch selection chip U2, the 4th inductance L4, the 5th inductance L5, the
Six inductance L6, the numerical control tunable capacitor U1, varactor D1 and two-way switch selection chip U2 are electrically connected with main control module
It connects.6th capacitance module is same as Example 2, and the 7th capacitance module is same as Example 1, the 4th inductance mould
Block is same as Example 3.
In the present embodiment, the 7th fixed capacity C7 in the 4th branch in the prior art is replaced with into the adjustable number of capacitance
Tunable capacitor U1 is controlled, the sixth fixed capacity C6 in parallel with the 4th inductance L4 is replaced with into the adjustable varactor of capacitance
D1 replaces with the 4th fixed inductance L4 by two kinds of inductance of two-way switch selection chip U2 switching control, more compared to embodiment 4
Further improve the flatness of signal waveform.
Embodiment 6:
As shown in figure 11, the 6th capacitance module and the 7th capacitance module are the variable module of capacitance, and described the
One inductor module and the 4th inductor module are the variable module of inductance value, and the 6th capacitance module is same as Example 2, institute
It is same as Example 1 to state the 7th capacitance module, the 4th inductor module is same as Example 3, first inductor module
Mentality of designing is similar with the 4th inductor module, but uses two two-way switch and select chip U2, can thoroughly avoid not being chosen
Influence of the inductive branch selected to overall frequency response characteristic, referring specifically to Figure 11 circuit, which is not described herein again.
Claims (9)
1. a kind of automatically controlled equalization compensation device of multiband, including main control module, first resistor (R1), second resistance (R2), third
Resistance (R3), first capacitor (C1), the second capacitor (C2), third capacitor (C3), the 4th capacitor (C4), the 5th capacitor (C5),
Two inductance (L2), third inductance (L3), the first resistor (R1) are connected to form the first branch with second resistance (R2), and described
Two capacitors (C2) connect to form second branch with the second inductance (L2), and the third capacitor (C3) is connected shape with third inductance (L3)
At third branch, the first capacitor (C1), the first branch, second branch and third branch circuit parallel connection, input signal (RFIN) are led to
It crosses the 4th capacitor (C4) to be electrically connected with one end of first capacitor (C1) afterwards, the other end of first capacitor (C1) passes through the 5th capacitor
(C5) output signal (RFOUT), the first resistor (R1), second resistance (R2), 3rd resistor (R3) are fixed resistance, institute
Stating first capacitor (C1), the second capacitor (C2), third capacitor (C3), the 4th capacitor (C4), the 5th capacitor (C5) is fixed electricity
Hold, second inductance (L2), third inductance (L3) are fixed inductance, it is characterised in that: further include the first inductor module, the
Four inductor modules, the 6th capacitance module and the 7th capacitance module, first inductor module are connected shape with the 7th capacitance module
At the 4th branch, the 4th branch is also in parallel with first capacitor (C1), and the 4th inductor module and the 6th capacitance module are simultaneously
Join latter end ground connection, the connection of first resistor (R1) Yu second resistance (R2) are electrically connected to after other end series connection 3rd resistor (R3)
Locate, at least one in first inductor module, the 4th inductor module, the 6th capacitance module and the 7th capacitance module
For the module that inductance value or capacitance can be changed, remaining module fixed for inductance value or capacitance, the inductance value or capacitance
Variable module is electrically connected for the inductance value or capacitance variation by main control module control corresponding module with main control module.
2. the automatically controlled equalization compensation device of a kind of multiband according to claim 1, it is characterised in that: the 6th capacitor mould
Block and the 7th capacitance module are the variable module of capacitance, and the 7th capacitance module includes numerical control tunable capacitor (U1), institute
Stating the 6th capacitance module includes varactor (D1), and the numerical control tunable capacitor (U1) and varactor (D1) are and master control
Module electrical connection.
3. the automatically controlled equalization compensation device of a kind of multiband according to claim 2, it is characterised in that: the numerical control adjustable electric
Hold model PE64102, the 7th capacitance module further include the 4th resistance (R4), the 5th resistance (R5), the 6th resistance (R6),
7th capacitor (C7), the 8th capacitor (C8), the 9th capacitor (C9), the tenth capacitor (C10), the 7th inductance (L7), the 4th electricity
Hinder (R4), the 5th resistance (R5), the 6th resistance (R6) are fixed resistance, the 7th capacitor (C7), the 8th capacitor (C8), the
Nine capacitors (C9), the tenth capacitor (C10) are fixed capacity, and the 7th inductance (L7) is fixed inductance, and the numerical control is adjustable
The pin 2,5,8,11,13 of capacitor (U1) is grounded, the electrical connection of pin 6,7 of the numerical control tunable capacitor (U1) for the first electricity
Hold (C1) to be electrically connected close to the one end of input signal (RFIN), the electrical connection of pin 9,10 of the numerical control tunable capacitor (U1) is used for
It is electrically connected with one end of the first inductance (L1), the other end and first capacitor (C1) of first inductance (L1) are close to output signal
(RFOUT) one end electrical connection, the pin 1,3,12 of the numerical control tunable capacitor (U1) pass through the 4th resistance (R4), the 5th respectively
Resistance (R5), the 6th resistance (R6) are electrically connected with main control module, the 4th resistance (R4), the 5th resistance (R5), the 6th resistance
(R6) one end being electrically connected with main control module is also connect by the 7th capacitor (C7), the 8th capacitor (C8), the tenth capacitor (C10) respectively
The pin 4 on ground, the numerical control tunable capacitor (U1) is sequentially connected in series the 7th inductance (L7) and the 9th capacitor (C9) is grounded afterwards, and described
Seven inductance (L7) are also electrically connected with power supply VCC with the junction of the 9th capacitor (C9).
4. the automatically controlled equalization compensation device of a kind of multiband according to claim 2, it is characterised in that: the varactor
It (D1) is voltage variable capacitance diode, the 6th capacitance module further includes the 6th capacitor (C6), the 7th resistance (R7), the 8th inductance
(L8), the 11st capacitor (C11), the 12nd capacitor (C12), the 6th capacitor (C6), the 11st capacitor (C11), the 12nd
Capacitor (C12) is fixed capacity, and the 7th resistance (R7) is fixed resistance, the 8th inductance (L8) is fixed inductance, institute
It states after 3rd resistor (R3) connect with one end of the junction second resistance (R2) with the 6th capacitor (C6) far from first resistor (R1)
Ground connection, the 3rd resistor (R3) is electrically connected with the junction of the 6th capacitor (C6) with one end of the 11st capacitor (C11), described
The other end of 11st capacitor (C11) is electrically connected with the cathode of voltage variable capacitance diode, the anode of the voltage variable capacitance diode
Ground connection, the cathode of the voltage variable capacitance diode are also sequentially connected in series the 8th inductance (L8) and the 7th resistance (R7) and are turned afterwards by A/D
Mold changing block is electrically connected with main control module, and the junction of the 8th inductance (L8) and the 7th resistance (R7) also passes through the 12nd capacitor
(C12) it is grounded.
5. the automatically controlled equalization compensation device of a kind of multiband according to claim 1, it is characterised in that: the 4th inductance mould
Block is the module that inductance value can be changed, and the 4th inductor module includes two-way switch selection chip (U2), the 4th inductance (L4), the
Five inductance (L5), the 6th inductance (L6), the 4th inductance (L4), the 5th inductance (L5), the 6th inductance (L6) are fixed electricity
Sense, the 4th inductance (L4), the 5th inductance (L5), the 6th inductance (L6) one end ground connection, the 4th inductance (L4) it is another
One end is electrically connected to the junction of 3rd resistor (R3) Yu the 6th capacitor (C6), the main control module, the 5th inductance (L5), the 6th
Inductance (L6), the 4th inductance (L4) ungrounded end with two-way switch selection chip (U2) be electrically connected, be used for by main control module
It controls two-way switch selection chip (U2) and gates one of both the 5th inductance (L5) and the 6th inductance (L6) and the 4th inductance
(L4) in parallel, the 5th inductance (L5) is different from the inductance value of the 6th inductance (L6).
6. the automatically controlled equalization compensation device of a kind of multiband according to claim 5, it is characterised in that: further include phase inverter
(U3), two-way switch selection chip (U2) tool is there are two control terminal, and wherein the one of two-way switch selection chip (U2)
A control terminal is linked together afterwards with another control terminal by phase inverter (U3) and is electrically connected with main control module.
7. the automatically controlled equalization compensation device of a kind of multiband according to claim 5, it is characterised in that: further include the 9th inductance
(L9) and the 18th capacitor (C18), the 9th inductance (L9) are fixed inductance, and the 18th capacitor (C18) is fixed electricity
Hold, two control terminals of two-way switch selection chip (U2) link together after be by the 9th inductance (L9) and master control mould
Block electrical connection, described two control terminals are also grounded by the 18th capacitor (C18) after linking together.
8. the automatically controlled equalization compensation device of a kind of multiband according to claim 5, it is characterised in that: further include the 15th electricity
Hold (C15) and the 16th capacitor (C16), the 15th capacitor (C15) and the 16th capacitor (C16) are fixed capacity, institute
The ungrounded end for stating the 5th inductance (L5) and the 6th inductance (L6) passes through the 15th capacitor (C15) and the 16th capacitor respectively
(C16) it is electrically connected with two-way switch selection chip (U2).
9. the automatically controlled equalization compensation device of a kind of multiband according to claim 5, it is characterised in that: further include the 17th electricity
Hold (C17), the 17th capacitor (C17) is fixed capacity, and the ungrounded end of the 4th inductance (L4) passes through the 17th electricity
Hold (C17) to be electrically connected with two-way switch selection chip (U2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811452408.7A CN109714499B (en) | 2018-11-30 | 2018-11-30 | Multi-band electronic control balance compensation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811452408.7A CN109714499B (en) | 2018-11-30 | 2018-11-30 | Multi-band electronic control balance compensation device |
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| CN109714499A true CN109714499A (en) | 2019-05-03 |
| CN109714499B CN109714499B (en) | 2021-05-18 |
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| CN2424589Y (en) * | 2000-04-06 | 2001-03-21 | 北京清华永新电子有限公司 | Multi-channel wired data broadcasting modulator |
| US20020047942A1 (en) * | 1999-12-15 | 2002-04-25 | Pieter Vorenkamp | Digital IF demodulator for video applications |
| CN102045551A (en) * | 2010-12-30 | 2011-05-04 | 常熟市高事达光电科技有限公司 | Radio frequency optical fiber transmission optical workstation for two-way network transformation of cable television |
| US20120154687A1 (en) * | 2010-12-17 | 2012-06-21 | Songnan Yang | Multi-band tunable antenna for integrated digital television service on mobile devices |
| CN108200368A (en) * | 2017-12-07 | 2018-06-22 | 宁波环球广电科技有限公司 | The high-precision adjustable electronic control equalizing circuit of cable TV network |
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2018
- 2018-11-30 CN CN201811452408.7A patent/CN109714499B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020047942A1 (en) * | 1999-12-15 | 2002-04-25 | Pieter Vorenkamp | Digital IF demodulator for video applications |
| CN2424589Y (en) * | 2000-04-06 | 2001-03-21 | 北京清华永新电子有限公司 | Multi-channel wired data broadcasting modulator |
| US20120154687A1 (en) * | 2010-12-17 | 2012-06-21 | Songnan Yang | Multi-band tunable antenna for integrated digital television service on mobile devices |
| CN102045551A (en) * | 2010-12-30 | 2011-05-04 | 常熟市高事达光电科技有限公司 | Radio frequency optical fiber transmission optical workstation for two-way network transformation of cable television |
| CN108200368A (en) * | 2017-12-07 | 2018-06-22 | 宁波环球广电科技有限公司 | The high-precision adjustable electronic control equalizing circuit of cable TV network |
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|---|---|
| CN109714499B (en) | 2021-05-18 |
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