CN109714499B

CN109714499B - Multi-band electronic control balance compensation device

Info

Publication number: CN109714499B
Application number: CN201811452408.7A
Authority: CN
Inventors: 王凯; 包明俊; 张励
Original assignee: Global Technology Inc China
Current assignee: Global Technology Inc China
Priority date: 2018-11-30
Filing date: 2018-11-30
Publication date: 2021-05-18
Anticipated expiration: 2038-11-30
Also published as: CN109714499A

Abstract

The utility model provides an automatically controlled compensation arrangement that equalizes of multiband, first resistance and second resistance series connection form first branch road, and second electric capacity and second inductance series connection form the second branch road, and third electric capacity and third inductance series connection form the third branch road, and first electric capacity, first branch road, second branch road and third branch road are parallelly connected, its characterized in that: the inductor comprises a first inductor module, a fourth inductor module, a sixth capacitor module and a seventh capacitor module, wherein the first inductor module and the seventh capacitor module are connected in series to form a fourth branch, the fourth branch is also connected with the first capacitor in parallel, one end of the fourth inductor module is grounded after the fourth inductor module and the sixth capacitor module are connected in parallel, and at least one of the first inductor module, the fourth inductor module, the sixth capacitor module and the seventh capacitor module is a module with a variable inductance value or capacitance value. The multiband electronic control equalization compensation device does not need to plug and pull the module, and is low in cost and maintenance difficulty.

Description

Multi-band electronic control balance compensation device

Technical Field

The invention relates to the technical field of cable television networks, in particular to a multi-band electronic control equalization compensation device.

Background

An electrically controlled equalization compensation device is generally provided in an upstream amplifier of a cable television (CATV) network to compensate for attenuation of CATV upstream signals. A circuit diagram of a conventional electronic control equalization compensation device is shown in fig. 1, and includes a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, a first inductor L1, a second inductor L2, a third inductor L3, and a fourth inductor L4, parameters of resistance, capacitance, and inductance elements of the electronic control equalization compensation device are fixed, and are all designed according to a frequency response characteristic of a certain specific frequency band f1, and an output compensation waveform is shown in fig. 2; thus, when the CATV uplink product of the cable television network needs to be replaced by a frequency band, for example, to the frequency band f2, the element parameters of the electronically controlled equalization compensation device need to be redesigned according to the frequency response characteristic of the frequency band f2, the compensation waveform output by the electronically controlled equalization compensation device is shown in fig. 3, and the superimposed graph of the compensation waveform and the CATV uplink signal is shown in fig. 4.

At present, CATV uplink signals of different frequency bands are generally realized by replacing and plugging an electronic control equalization compensation device. However, the cost is high because corresponding plugging modules are required to be equipped for different frequency bands, the operation is inconvenient due to the plugging mode, and the cost and the maintenance difficulty are further increased along with the increase of the using quantity of the amplifiers and the nodes.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the multiband electronic control equalization compensation device is free of module plugging and unplugging and low in cost and maintenance difficulty.

The technical solution of the invention is as follows: the multiband electronic control balance compensation device comprises a main control module, a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a second inductor and a third inductor, wherein the first resistor and the second resistor are connected in series to form a first branch circuit, the second capacitor and the second inductor are connected in series to form a second branch circuit, the third capacitor and the third inductor are connected in series to form a third branch circuit, the first capacitor, the first branch circuit, the second branch circuit and the third branch circuit are connected in parallel, an input signal is electrically connected with one end of the first capacitor after passing through the fourth capacitor, the other end of the first capacitor outputs a signal through the fifth capacitor, the first resistor, the second resistor and the third resistor are fixed resistors, the first capacitor, the second capacitor, the third capacitor, the fourth capacitor and the fifth capacitor are fixed capacitors, the second inductor, the third inductor, The third inductance is fixed inductance, its characterized in that: the inductor comprises a first inductor module, a fourth inductor module, a sixth capacitor module and a seventh capacitor module, wherein the first inductor module and the seventh capacitor module are connected in series to form a fourth branch, the fourth branch is also connected in parallel with a first capacitor, one end of the fourth inductor module is grounded after the fourth inductor module and the sixth capacitor module are connected in parallel, the other end of the fourth inductor module is connected in series with a third resistor and then is electrically connected to the joint of the first resistor and the second resistor, at least one of the first inductor module, the fourth inductor module, the sixth capacitor module and the seventh capacitor module is a module with a variable inductance value or capacitance value, the rest of the first inductor module, the fourth inductor module, the sixth capacitor module and the seventh capacitor module are modules with fixed inductance values or capacitance values, and the modules with the variable inductance values or capacitance values are electrically connected with the main control.

After adopting the structure, the invention has the following advantages:

the multiband electronic control balance compensation device replaces one or more fixed inductors and fixed capacitors in the prior art with variable inductors and variable capacitors, and then the main control module controls the inductance value or capacitance value change of the corresponding module, so that the function of changing the frequency response characteristic of the circuit under different frequency bands is achieved, the modules do not need to be plugged and pulled out, and the cost and the maintenance difficulty are low.

Preferably, the sixth capacitor module and the seventh capacitor module are both modules with variable capacitance values, the seventh capacitor module includes a numerically-controlled adjustable capacitor, the sixth capacitor module includes a varactor, and both the numerically-controlled adjustable capacitor and the varactor are electrically connected to the main control module. This setting will be among the prior art seventh fixed capacitance replacement in the fourth branch road for the adjustable electric capacity of capacitance value adjustable numerical control, the sixth fixed capacitance replacement that will connect in parallel with the fourth inductance is for capacitance value adjustable varactor, then can make numerical control adjustable capacitance and varactor output variable capacitance value by host system's control, thereby can be in the frequency response characteristic of the frequency band change circuit of difference, numerical control adjustable capacitance mainly adjusts medium and high frequency, the control range is wide, play main regulatory action, and varactor is better to high frequency signal's regulatory action, play the fine tuning action, it is wide to have frequency control range to combine numerical control adjustable capacitance and varactor, the signal waveform flatness that finally adjusts out is better, the precision is higher.

Preferably, the model of the digitally controlled tunable capacitor is PE64102, the seventh capacitor module further includes a fourth resistor, a fifth resistor, a sixth resistor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor, and a seventh inductor, the fourth resistor, the fifth resistor, and the sixth resistor are all fixed resistors, the seventh capacitor, the eighth capacitor, the ninth capacitor, and the tenth capacitor are all fixed capacitors, the seventh inductor is a fixed inductor,

pins

2, 5, 8, 11, and 13 of the digitally controlled tunable capacitor are grounded,

pins

6 and 7 of the digitally controlled tunable capacitor are electrically connected to one end of the first capacitor close to the input signal,

pins

9 and 10 of the digitally controlled tunable capacitor are electrically connected to one end of the first inductor, the other end of the first inductor is electrically connected to one end of the first capacitor close to the output signal, pin 1 of the digitally controlled tunable capacitor is electrically connected to the output signal, and the second capacitor is connected to the output signal, 3. 12 are connected with the main control module through a fourth resistor, a fifth resistor and a sixth resistor respectively, one end of the fourth resistor, the fifth resistor and the sixth resistor which is connected with the main control module is grounded through a seventh capacitor, an eighth capacitor and a tenth capacitor respectively, a pin 4 of the numerical control adjustable capacitor is grounded after being connected with the seventh inductor and the ninth capacitor in series in sequence, and the joint of the seventh inductor and the ninth capacitor is also connected with a power supply VCC electrically. The seventh capacitor module is wide in frequency adjusting range, excellent and stable in performance and capable of adjusting medium and high frequencies well.

Preferably, the varactor is a voltage-controlled varactor, the sixth capacitance module further includes a sixth capacitance, a seventh resistance, an eighth inductance, an eleventh capacitance, and a twelfth capacitance, the sixth capacitance, the eleventh capacitance, and the twelfth capacitance are all fixed capacitances, the seventh resistance is a fixed resistance, the eighth inductance is a fixed inductance, one end of the third resistance, which is far from the junction between the first resistance and the second resistance, is connected in series with the sixth capacitance and then grounded, the junction between the third resistance and the sixth capacitance is electrically connected with one end of the eleventh capacitance, the other end of the eleventh capacitance is electrically connected with the cathode of the voltage-controlled varactor, the anode of the varactor is grounded, the cathode of the voltage-controlled varactor is further electrically connected with the main control module through an a/D conversion module after being sequentially connected in series with the eighth inductance and the seventh resistance, the connection position of the eighth inductor and the seventh resistor is also grounded through a twelfth capacitor. The varactor unit has the advantages of simple structure, fewer required components, and better fine adjustment on high-frequency signals, so that the finally adjusted signal has better flatness and higher precision.

Preferably, the fourth inductor module is a module with a variable inductance value, the fourth inductor module includes a dual-way switch selection chip, a fourth inductor, a fifth inductor and a sixth inductor, the fourth inductor, the fifth inductor and the sixth inductor are fixed inductors, one end of the fourth inductor, one end of the fifth inductor and one end of the sixth inductor are grounded, the other end of the fourth inductor is electrically connected to a connection point of a third resistor and a sixth capacitor, non-grounded ends of the main control module, the fifth inductor, the sixth inductor and the fourth inductor are electrically connected to the dual-way switch selection chip, the main control module controls the dual-way switch selection chip to gate one of the fifth inductor and the sixth inductor to be connected with the fourth inductor in parallel, and the inductance values of the fifth inductor and the sixth inductor are different. The arrangement can further improve the frequency response characteristic to obtain a waveform with better flatness by switching and gating the fifth inductor and the sixth inductor to be connected with the fourth inductor in parallel to obtain different inductance values.

Preferably, the dual-way switch selection chip further comprises an inverter, the dual-way switch selection chip is provided with two control ends, and one control end of the dual-way switch selection chip is connected with the other control end through the inverter and is electrically connected with the main control module. The arrangement utilizes the phase inverter to ensure that two control ends can be controlled by only one control signal, thereby saving I/O control pins of the main control module.

Preferably, the dual-channel switch further comprises a ninth inductor and an eighteenth capacitor, the ninth inductor is a fixed inductor, the eighteenth capacitor is a fixed capacitor, the two control ends of the dual-channel switch selection chip are electrically connected with the main control module through the ninth inductor after being connected together, and the two control ends are grounded through the eighteenth capacitor after being connected together. This arrangement filters interference and makes the control signal more accurate.

Preferably, the dual-channel switch selection chip further comprises a fifteenth capacitor and a sixteenth capacitor, the fifteenth capacitor and the sixteenth capacitor are both fixed capacitors, and the non-grounding ends of the fifth inductor and the sixth inductor are electrically connected with the dual-channel switch selection chip through the fifteenth capacitor and the sixteenth capacitor respectively. The fifteenth capacitor and the sixteenth capacitor are used as blocking capacitors in the setting, so that the alternating current and direct current are conducted, and the control is more accurate.

Preferably, the circuit further comprises a seventeenth capacitor, the seventeenth capacitor is a fixed capacitor, and a non-grounded end of the fourth inductor is electrically connected with the two-way switch selection chip through the seventeenth capacitor. This setting utilizes seventeenth electric capacity as blocking direct current electric capacity, plays to lead to exchanging and separates the effect of direct current, makes control more accurate.

Description of the drawings:

fig. 1 is a circuit diagram of a conventional electrically controlled equalization compensation apparatus;

fig. 2 is a compensation waveform output by the prior electrically controlled equalization compensation device at a frequency band f 1;

fig. 3 is a compensation waveform output by the prior electrically controlled equalization compensation device at a frequency band f 2;

fig. 4 is a schematic diagram of the superposition of the compensation waveform output by the prior electrically-controlled equalization compensation device and the CATV upstream signal in the frequency band f 2;

FIG. 5 is a schematic diagram of the multi-band electronically controlled equalization compensation device of the present invention;

fig. 6 is a circuit diagram of a multiband electronically controlled equalization compensation device according to embodiment 1 of the present invention;

fig. 7 is a circuit diagram of a multiband electronically controlled equalization compensation device according to embodiment 2 of the present invention;

fig. 8 is a circuit diagram of a multiband electronic controlled equalization compensation device according to embodiment 3 of the present invention;

fig. 9 is a circuit diagram of a multiband electronic controlled equalization compensation apparatus according to embodiment 4 of the present invention;

fig. 10 is a circuit diagram of a multiband electronically controlled equalization compensation device according to embodiment 5 of the present invention;

fig. 11 is a circuit diagram of a multiband electronically controlled equalization compensation apparatus according to embodiment 6 of the present invention.

Detailed Description

The invention is further described with reference to the following embodiments in conjunction with the accompanying drawings.

Example 1:

as shown in fig. 5 and 6, a multiband electronic control equalization compensation apparatus includes a main control module, a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a second inductor L2, and a third inductor L3, where the first resistor R355 and the second resistor R2 are connected in series to form a first branch, the second capacitor C2 and the second inductor L2 are connected in series to form a second branch, the third capacitor C3 and the third inductor L3 are connected in series to form a third branch, the first capacitor C1, the first branch, the second branch, and the third branch are connected in parallel, an input signal RFIN passes through the fourth capacitor C4 and then is electrically connected to one end of a first capacitor C1, the other end of the first capacitor C1 outputs a signal through a fifth capacitor C5, the first resistor R1, the second resistor R867, the third resistor R368672, and the third resistor R368672 are fixed and the first resistor R867, the third resistor R367, the third resistor R3646, and the third resistor R367, The second capacitor C2, the third capacitor C3, the fourth capacitor C4 and the fifth capacitor C5 are fixed capacitors, the second inductor L2 and the third inductor L3 are fixed inductors, the inductor further comprises a first inductor module, a fourth inductor module, a sixth capacitor module and a seventh capacitor module, the first inductor module and the seventh capacitor module are connected in series to form a fourth branch, the fourth branch is also connected in parallel with the first capacitor C1, one end of the fourth inductor module is grounded after being connected in parallel with the sixth capacitor module, the other end of the fourth inductor module is connected in series with a third resistor R3 and then is electrically connected to the connection position of the first resistor R1 and the second resistor R2, the first inductor module and the fourth inductor module are fixed modules, the seventh capacitor module is a variable capacitor module, the sixth capacitor module is a fixed capacitor module, the first inductor module is a first fixed inductor L1, the fourth inductor module is a fourth fixed inductor L4, the sixth capacitor module is a sixth fixed capacitor C6, the seventh capacitor module includes a digitally controlled adjustable capacitor U1, the digitally controlled adjustable capacitor U1 of the seventh capacitor module is electrically connected to a main control module, such as a single chip microcomputer, a DSP, and the like, which is not shown in the figure.

The type of the digitally controlled adjustable capacitor U1 is PE64102, the seventh capacitor module further includes a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10, and a seventh inductor L7, the fourth resistor R4, the fifth resistor R5, and the sixth resistor R6 are fixed resistors, the seventh capacitor C7, the eighth capacitor C8, the ninth capacitor C9, and the tenth capacitor C10 are fixed capacitors, the seventh inductor L7 is a fixed inductor, the

pins

2, 5, 8, 11, and 13 of the digitally controlled adjustable capacitor U1 are grounded, the

pins

6 and 7 of the digitally controlled adjustable capacitor U1 are electrically connected to one end of the first capacitor C1 close to the input signal n, the

pins

9 and 10 of the digitally controlled adjustable capacitor U1 are electrically connected to one end of the first inductor L1, and the other end of the first inductor L1 is electrically connected to one end of the first inductor rfil 8653,

pins

1, 3 and 12 of the digitally-controlled adjustable capacitor U1 are electrically connected with a pin SEN9, an SCLK and an SDAT of the main control module through a fourth resistor R4, a fifth resistor R5 and a sixth resistor R6, one ends of the fourth resistor R4, the fifth resistor R5 and the sixth resistor R6 electrically connected with the main control module are grounded through a seventh capacitor C7, an eighth capacitor C8 and a tenth capacitor C10, a pin 4 of the digitally-controlled adjustable capacitor U1 is grounded after being sequentially connected with a seventh inductor L7 and a ninth capacitor C9 in series, and a connection point of the seventh inductor L7 and the ninth capacitor C9 is also electrically connected with a power supply VCC.

In this embodiment, the seventh fixed capacitor C7 in the fourth branch circuit in the prior art is replaced by the digitally controlled adjustable capacitor U1 with an adjustable capacitance value, and then the digitally controlled adjustable capacitor U1 is controlled by the main control module to output a variable capacitance value, so that the frequency response characteristics of the circuit can be changed in different frequency bands.

Example 2:

as shown in fig. 7, the first inductor module and the fourth inductor module are both fixed inductance values, the seventh capacitor module is a fixed capacitance value module, the sixth capacitor module is a variable capacitance value module, the first inductor module is a first fixed inductor L1, the fourth inductor module is a fourth fixed inductor L4, the seventh capacitor module is a seventh fixed capacitor C7, the sixth capacitor module includes a varactor diode D1, and the varactor diode D1 of the sixth capacitor module is electrically connected to the main control module.

The varactor diode D1 is a voltage-controlled varactor diode, the sixth capacitance module further includes a sixth capacitor C6, a seventh resistor R7, an eighth inductor L8, an eleventh capacitor C11 and a twelfth capacitor C12, the sixth capacitor C6, the eleventh capacitor C11 and the twelfth capacitor C12 are fixed capacitors, the seventh resistor R7 is a fixed resistor, the eighth inductor L8 is a fixed inductor, the sixth capacitor C6 is connected in parallel with the fourth inductor L4, one end of the third resistor R3, which is far from the connection between the first resistor R1 and the second resistor R2, is connected in series with the sixth capacitor C6 and then grounded, the connection between the third resistor R3 and the sixth capacitor C6 is electrically connected with one end of an eleventh capacitor C11, the other end of the eleventh capacitor C11 is electrically connected with the cathode of the voltage-controlled varactor diode, the anode of the voltage-controlled varactor diode is grounded, the cathode of the voltage-controlled varactor diode is further connected in series, the connection between the eighth inductor L8 and the seventh inductor L7 through a pin/switch module 2 a/a pin And electrically connected, the connection position of the eighth inductor L8 and the seventh resistor R7 is also grounded through a twelfth capacitor C12.

In this embodiment, the sixth fixed capacitor C6 connected in parallel with the fourth fixed inductor L4 in the prior art is replaced by the varactor diode D1 with an adjustable capacitance value, and then the varactor diode D1 can output a variable capacitance value under the control of the main control module, so that the frequency response characteristics of the circuit can be changed in different frequency bands.

Example 3:

as shown in fig. 8, the sixth capacitor module and the seventh capacitor module are both modules with fixed capacitance values, the first inductor module is a module with fixed inductance value, the fourth inductor module is a module with variable inductance value, the sixth capacitor module is a sixth fixed capacitor C6, the seventh capacitor module is a seventh fixed capacitor C7, and the first inductor module is a first fixed inductor L1.

The fourth inductance module comprises a dual-way switch selection chip U2, a fourth inductance L4, a fifth inductance L5 and a sixth inductance L6, the fourth inductance L4, the fifth inductance L5 and the sixth inductance L6 are all fixed inductances, one ends of the fourth inductance L4, the fifth inductance L5 and the sixth inductance L6 are grounded, the other end of the fourth inductance L4 is electrically connected to a connection position of a third resistor R3 and a sixth capacitor C6, non-grounded ends of the main control module, the fifth inductance L5, the sixth inductance L6 and the fourth inductance L4 are all electrically connected with the dual-way switch selection chip U2, the main control module is used for controlling the dual-way switch selection chip U2 to gate one of the fifth inductance L5 and the sixth inductance L6 to be connected with the fourth inductance L4 in parallel, the fifth inductance L5 is different from the sixth inductance L6, and the dual-way switch selection chip U2 is a dual-way switch selection chip U001; the dual-way switch selection chip U2 is provided with two control ends, one control end of the dual-way switch selection chip U2 is connected with the other control end through the inverter U3 and is electrically connected with a pin REVSWISC1 of the main control module; the dual-way switch selection chip comprises a first inductor L9, a second inductor L18, a third capacitor C18, a fourth inductor L9 and a fourth capacitor C18, wherein two control ends of the dual-way switch selection chip U2 are electrically connected with a main control module through the first inductor L9 after being connected together, and are also grounded through the second capacitor C18 after being connected together; the circuit also comprises a fifteenth capacitor C15 and a sixteenth capacitor C16, wherein the non-grounded ends of the fifth inductor L5 and the sixth inductor L6 are electrically connected with the two-way switch selection chip U2 through the fifteenth capacitor C15 and the sixteenth capacitor C16 respectively; the inductor also comprises a seventeenth capacitor C17, and the non-grounded end of the fourth inductor L4 is electrically connected with the two-way switch selection chip U2 through the seventeenth capacitor C17.

In this embodiment, the inductance value of the circuit can be changed by replacing the fourth fixed inductor L4 connected in parallel with the sixth fixed capacitor C6 in the prior art with two different inductors switched and controlled by the two-way switch selection chip U2, so that the frequency response characteristic of the circuit can be changed at different frequency bands.

Example 4:

as shown in fig. 9, the sixth capacitor module and the seventh capacitor module are both modules with variable capacitance values, the first inductor module and the fourth inductor module are both modules with fixed inductance values, the first inductor module is a first fixed inductor L1, the fourth inductor module is a fourth fixed inductor L4, the seventh capacitor module includes a digitally-controlled adjustable capacitor U1, the sixth capacitor module includes a varactor diode D1, and both the digitally-controlled adjustable capacitor U1 and the varactor diode D1 are electrically connected to the main control module. The sixth capacitive module is the same as in embodiment 2, and the seventh capacitive module is the same as in embodiment 1.

In this embodiment, a seventh fixed capacitor C7 in a fourth branch in the prior art is replaced with a numerical control adjustable capacitor U1 with an adjustable capacitance value, a sixth fixed capacitor C6 connected in parallel with a fourth inductor L4 is replaced with a varactor diode D1 with an adjustable capacitance value, and then the numerical control adjustable capacitor U1 and the varactor diode D1 are controlled by a main control module to output variable capacitance values, so that the frequency response characteristics of the circuit can be changed in different frequency bands; numerical control adjustable capacitor U1 mainly adjusts the medium and high frequency, and accommodation range is wide, plays main regulatory action, and varactor D1 is better to the regulatory action of high frequency signal, plays the fine tuning effect, combines numerical control adjustable capacitor U1 and varactor D1 to have the frequency control wide range, and the signal waveform flatness that finally adjusts out is better, and the precision is higher.

Example 5:

as shown in fig. 10, the sixth and seventh capacitance modules are modules with variable capacitance values, the first inductance module is a module with fixed inductance value, the fourth inductance module is a module with variable inductance value, the first inductance module is a first fixed inductance L1, the seventh capacitance module includes a digitally controlled adjustable capacitance U1, the sixth capacitance module includes a varactor diode D1, the fourth inductance module includes a dual-way switch selection chip U2, a fourth inductance L4, a fifth inductance L5, a sixth inductance L6, and the digitally controlled adjustable capacitance U1, the varactor diode D1 and the dual-way switch selection chip U2 are all electrically connected with the main control module. The sixth capacitive module is the same as embodiment 2, the seventh capacitive module is the same as embodiment 1, and the fourth inductive module is the same as embodiment 3.

In this embodiment, a seventh fixed capacitor C7 in the fourth branch in the prior art is replaced with a numerical control adjustable capacitor U1 with an adjustable capacitance value, a sixth fixed capacitor C6 connected in parallel with a fourth inductor L4 is replaced with a varactor diode D1 with an adjustable capacitance value, and a fourth fixed inductor L4 is replaced with two inductors switched and controlled by a two-way switch selection chip U2, so that the flatness of a signal waveform is further improved compared with embodiment 4.

Example 6:

as shown in fig. 11, the sixth capacitor module and the seventh capacitor module are both modules with variable capacitance values, the first inductor module and the fourth inductor module are both modules with variable inductance values, the sixth capacitor module is the same as that in embodiment 2, the seventh capacitor module is the same as that in embodiment 1, the fourth inductor module is the same as that in embodiment 3, the first inductor module is similar to the fourth inductor module in design idea, but two-way switch selection chips U2 are adopted, so that the influence of unselected inductor branches on the overall frequency induction characteristic can be thoroughly avoided, and specific reference is made to the circuit of fig. 11, which is not repeated herein.

Claims

1. A multiband electronic control equalization compensation device comprises a main control module, a first resistor (R1), a second resistor (R2), a third resistor (R3), a first capacitor (C1), a second capacitor (C2), a third capacitor (C3), a fourth capacitor (C4), a fifth capacitor (C5), a second inductor (L2) and a third inductor (L3), wherein the first resistor (R1) and the second resistor (R2) are connected in series to form a first branch, the second capacitor (C2) and the second inductor (L2) are connected in series to form a second branch, the third capacitor (C3) and the third inductor (L3) are connected in series to form a third branch, the first capacitor (C1), the first branch, the second branch and the third branch are connected in parallel, an input signal (N) passes through the fourth capacitor (C4) and then is electrically connected with one end of the first capacitor (C1), and the other end of the first capacitor (RFIC 1) outputs a signal RFIC 5), the first resistor (R1), the second resistor (R2) and the third resistor (R3) are fixed resistors, the first capacitor (C1), the second capacitor (C2), the third capacitor (C3), the fourth capacitor (C4) and the fifth capacitor (C5) are fixed capacitors, and the second inductor (L2) and the third inductor (L3) are fixed inductors, wherein: the inductor comprises a first inductor module, a fourth inductor module, a sixth capacitor module and a seventh capacitor module, wherein the first inductor module and the seventh capacitor module are connected in series to form a fourth branch, the fourth branch is also connected in parallel with a first capacitor (C1), one end of the fourth inductor module is grounded after the fourth inductor module and the sixth capacitor module are connected in parallel, the other end of the fourth inductor module is connected in series with a third resistor (R3) and then is electrically connected to the connection position of a first resistor (R1) and a second resistor (R2), at least one of the first inductor module, the fourth inductor module, the sixth capacitor module and the seventh capacitor module is an inductance value or variable capacitance value module, the rest are modules with fixed inductance values or capacitance values, and the inductance value or variable capacitance value module is electrically connected with the main control module and is used for controlling the inductance value or the capacitance value of the corresponding module to change.

2. A multiband electronically controlled equalization compensation device according to claim 1, wherein: the sixth capacitor module and the seventh capacitor module are both modules with variable capacitance values, the seventh capacitor module comprises a numerical control adjustable capacitor (U1), the sixth capacitor module comprises a variable capacitance diode (D1), and the numerical control adjustable capacitor (U1) and the variable capacitance diode (D1) are both electrically connected with the main control module.

3. A multiband electronically controlled equalization compensation device according to claim 2, wherein: the model of the digitally controlled adjustable capacitor is PE64102, the seventh capacitor module further includes a fourth resistor (R4), a fifth resistor (R5), a sixth resistor (R6), a seventh capacitor (C7), an eighth capacitor (C8), a ninth capacitor (C9), a tenth capacitor (C10), and a seventh inductor (L7), where the fourth resistor (R4), the fifth resistor (R5), and the sixth resistor (R6) are all fixed resistors, the seventh capacitor (C7), the eighth capacitor (C8), the ninth capacitor (C9), and the tenth capacitor (C10) are all fixed capacitors, the seventh inductor (L7) is a fixed inductor, pins 2, 5, 8, 11, 13 of the digitally controlled adjustable capacitor (U1) are grounded, pins 6, 7 of the digitally controlled adjustable capacitor (U1) are electrically connected to be used for electrically connecting with one end of the first capacitor (C1) close to the input signal (C35n), and pins 6, 7 of the digitally controlled adjustable capacitor (U1) are electrically connected to the pin of the first capacitor (C369) The digital control adjustable capacitor (U1) is electrically connected with one end of a first inductor (L1), the other end of the first inductor (L1) is electrically connected with one end, close to an output signal (RFOUT), of a first capacitor (C1), pins 1, 3 and 12 of the digital control adjustable capacitor (U1) are electrically connected with a main control module through a fourth resistor (R4), a fifth resistor (R5) and a sixth resistor (R6), one ends, electrically connected with the main control module, of the fourth resistor (R4), the fifth resistor (R5) and the sixth resistor (R6) are further grounded through a seventh capacitor (C7), an eighth capacitor (C8) and a tenth capacitor (C10), one end, electrically connected with the main control module, of the digital control adjustable capacitor (U1) is further grounded after being sequentially connected with the seventh inductor (L7) and the ninth capacitor (C9) in series, and the connection position of the seventh inductor (L7) and the ninth capacitor (C9) is further electrically connected with a power supply VCC.

4. A multiband electronically controlled equalization compensation device according to claim 2, wherein: the varactor (D1) is a voltage-controlled varactor, the sixth capacitance module further includes a sixth capacitor (C6), a seventh resistor (R7), an eighth inductor (L8), an eleventh capacitor (C11), and a twelfth capacitor (C12), the sixth capacitor (C6), the eleventh capacitor (C11), and the twelfth capacitor (C12) are fixed capacitors, the seventh resistor (R7) is a fixed resistor, the eighth inductor (L8) is a fixed inductor, one end of the third resistor (R3) far from the connection of the first resistor (R1) and the second resistor (R2) is connected in series with the sixth capacitor (C6) and then grounded, the connection of the third resistor (R3) and the sixth capacitor (C6) is electrically connected to one end of the eleventh capacitor (C11), the other end of the eleventh capacitor (C11) is electrically connected to the cathode of the voltage-controlled varactor, and the anode of the voltage-controlled varactor is grounded, the cathode of the voltage-controlled variable capacitance diode is sequentially connected with an eighth inductor (L8) and a seventh resistor (R7) in series and then is electrically connected with the main control module through the A/D conversion module, and the connection part of the eighth inductor (L8) and the seventh resistor (R7) is grounded through a twelfth capacitor (C12).

5. A multiband electronically controlled equalization compensation device according to claim 1, wherein: the fourth inductance module is a module with variable inductance value, the fourth inductance module comprises a double-circuit switch selection chip (U2), a fourth inductance (L4), a fifth inductance (L5) and a sixth inductance (L6), the fourth inductance (L4), the fifth inductance (L5) and the sixth inductance (L6) are fixed inductances, one ends of the fourth inductance (L4), the fifth inductance (L5) and the sixth inductance (L6) are grounded, the other end of the fourth inductance (L4) is electrically connected to the connection position of a third resistor (R3) and a sixth capacitance (C6), the non-grounded ends of the main control module, the fifth inductance (L5), the sixth inductance (L6) and the fourth inductance (L4) are electrically connected with the double-circuit switch selection chip (U2) for controlling one of the fifth inductance (L5) and the sixth inductance (L6) to be connected with the fourth inductance (L4) in parallel through the main control module, the inductance values of the fifth inductor (L5) and the sixth inductor (L6) are different.

6. A multiband electronically controlled equalization compensation device according to claim 5, wherein: the dual-way switch selection chip comprises a dual-way switch selection chip (U2) and is characterized by further comprising an inverter (U3), wherein the dual-way switch selection chip (U2) is provided with two control ends, and one control end of the dual-way switch selection chip (U2) is connected with the other control end through the inverter (U3) and is electrically connected with the main control module.

7. A multiband electronically controlled equalization compensation device according to claim 5, wherein: still include ninth inductance (L9) and eighteenth electric capacity (C18), ninth inductance (L9) is fixed inductance, eighteenth electric capacity (C18) is fixed capacitance, two control terminals that double-circuit switch selected chip (U2) link together the back and be connected with the main control module electricity through ninth inductance (L9), still pass through eighteenth electric capacity (C18) ground connection after two control terminals link together.

8. A multiband electronically controlled equalization compensation device according to claim 5, wherein: the circuit also comprises a fifteenth capacitor (C15) and a sixteenth capacitor (C16), wherein the fifteenth capacitor (C15) and the sixteenth capacitor (C16) are both fixed capacitors, and the non-grounded ends of the fifth inductor (L5) and the sixth inductor (L6) are respectively and electrically connected with the two-way switch selection chip (U2) through the fifteenth capacitor (C15) and the sixteenth capacitor (C16).

9. A multiband electronically controlled equalization compensation device according to claim 5, wherein: the circuit also comprises a seventeenth capacitor (C17), wherein the seventeenth capacitor (C17) is a fixed capacitor, and the non-grounded end of the fourth inductor (L4) is electrically connected with the two-way switch selection chip (U2) through the seventeenth capacitor (C17).