CN205681454U - A kind of amplitude equalizer - Google Patents
A kind of amplitude equalizer Download PDFInfo
- Publication number
- CN205681454U CN205681454U CN201521066065.2U CN201521066065U CN205681454U CN 205681454 U CN205681454 U CN 205681454U CN 201521066065 U CN201521066065 U CN 201521066065U CN 205681454 U CN205681454 U CN 205681454U
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- China
- Prior art keywords
- resistance
- varactor
- amplitude equalizer
- inductance
- circuit
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
Abstract
This application provides a kind of amplitude equalizer, this amplitude equalizer includes resonance point adjustment module and VRM Voltage Regulator Module, wherein, resonance point adjustment module includes varactor, VRM Voltage Regulator Module is connected with resonance point adjustment module, regulation acts on the voltage on varactor, thus changes the electric capacity of varactor, the resonance point of further amplitude of accommodation equalizer.The amplitude equalizer that the application provides can be adjusted according to the requirement of different system, and need not greatly reduce R&D costs and research and development time for different system redesign amplitude equalizers.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of amplitude equalizer.
Background technology
Along with developing rapidly of communication electronic system, communication bandwidth improves constantly, the amplifier that current device manufacturer is done
Being mostly broadband amplifier, broadband amplifier has a common feature, and i.e. during frequency height, gain is low, and when frequency is low, gain is high.
For the transceiver channel of communication system, in order to realize launching the power amplification of signal and receive the low noise amplification of signal, it is both needed to
Want multistage amplifier to cascade, so can cause high band and low-frequency range after the amplitude-frequency characteristic superposition of the most all devices
Gain may difference 10dB.In order to realize the good gain flatness of passage, need to add in the channel amplitude equalizer, to solve
The problem that the link gain flatness that certainly amplifier cascade introduces is deteriorated.
Conventional amplitude equalizer presses working frequency range, operating power classification, can be divided into Wideband Equalizer and arrowband equalizer,
High-power equalizer and small-power equalizer.Inventor finds during realizing the invention: conventional amplitude equalization
Device is RLC framework, circuit once complete design, and flatness is definite value, unadjustable.Amplitude equalizer is put down by different systems
Smooth degree index demand is different, needs Amending design in different systems, therefore, adds research and development time and cost.
Summary of the invention
In view of this, the invention provides a kind of amplitude equalizer, in order to solve regular amplitude equalizer in prior art
Using RLC framework, circuit once complete design, flatness is definite value, uncontrollable problem, and its technical scheme is as follows:
A kind of amplitude equalizer, including: resonance point adjustment module and VRM Voltage Regulator Module, wherein, described resonance point regulates
Module includes varactor；
Described VRM Voltage Regulator Module is connected with described resonance point adjustment module, acts on described varactor for regulation
On voltage；
Described resonance point adjustment module, for changing described transfiguration two pole under the voltage-regulation of described VRM Voltage Regulator Module
The electric capacity of pipe is to regulate the resonance point of described amplitude equalizer.
Wherein, described VRM Voltage Regulator Module is adjustable potentiometer.
Wherein, described resonance point adjustment module includes: the first inductance, the first varactor, the second inductance, the second transfiguration
Diode, the first resistance, the second resistance, the 3rd resistance and the 4th resistance；
Described first inductance and described first varactor are composed in series the first circuit；
Described second inductance and described second varactor compose in parallel second circuit；
Second end of described second resistance is connected with the first end of described 3rd resistance；
First end of described first resistance, the first end of described first circuit, the first end of described second resistance connect to be made
It it is the first common port；
Second end of described first resistance, the second end of described first circuit, the second end of described second resistance connect to be made
It it is the second common port；
First end of described 4th resistance is connected with the second end of described second resistance, the second end of described 4th resistance with
First end of described second circuit connects, the second end ground connection of described second circuit；
Described adjustable potentiometer is connected with described first varactor and described second varactor respectively, by changing
The voltage becoming described first varactor and described second varactor two ends changes described first varactor and institute
State the electric capacity of the second varactor, make the resonant frequency of described first circuit and described second circuit change.
Wherein, the first inductance connect with described first varactor particularly as follows:
Second end of described first inductance is connected with the negative pole of described first varactor；
Described second inductance in parallel with described second varactor particularly as follows:
First end of described second inductance is connected with the second end of described 4th resistance, the second termination of described second inductance
Ground, the negative pole of described second varactor is connected with the second end of described 4th resistance, and described second varactor is just
Pole ground connection.
Wherein, the input of described amplitude equalizer is connected with described first common port through the first electric capacity, and described second is public
End is connected the outfan as described amplitude equalizer with the second electric capacity altogether.
Wherein, described amplitude equalizer also includes the 5th resistance and the 6th resistance；
First end of described adjustable potentiometer is connected with the first end of described 5th resistance, the second end of described 5th resistance
Ground connection；
3rd end of described adjustable potentiometer is connected with the first end of described 6th resistance, the second end of described 6th resistance
Connect voltage source；
Second end of described adjustable potentiometer and the three-terminal link of described adjustable potentiometer；
The negative pole of described first varactor is connected with the first end of described 5th resistance, described second varactor
Negative pole be connected with the first end of described five resistance.
Technique scheme has the advantages that
The amplitude equalizer that the present invention provides may utilize VRM Voltage Regulator Module regulation and makees in the voltage at varactor two ends,
Thus change the electric capacity of varactor, and then the resonance point of amplitude of accommodation equalizer, this makes the flatness of amplitude equalizer
Index is adjustable in set point.The amplitude equalizer that the present invention provides can be adjusted according to the requirement of different system, and not
With for different system redesign amplitude equalizers, greatly reduce R&D costs and research and development time.
Accompanying drawing explanation
The structural representation of the amplitude equalizer that Fig. 1 provides for the embodiment of the present invention；
The physical circuit figure of the amplitude equalizer that Fig. 2 provides for the embodiment of the present invention；
The ADS analogous diagram of the amplitude equalizer that Fig. 3 provides for the embodiment of the present invention；
The simulation result of the amplitude equalizer that Fig. 4 provides for the embodiment of the present invention；
The simulation result of the amplitude equalizer that Fig. 5 provides for the embodiment of the present invention；
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Embodiments providing a kind of amplitude equalizer, this amplitude equalizer utilizes the varactor that voltage is controlled
The resonance point of amplitude of accommodation equalizer, so that the flatness index of amplitude equalizer is adjustable in set point.
Refer to Fig. 1, it is shown that the structural representation of the amplitude equalizer that the embodiment of the present invention provides, the embodiment of the present invention
The amplitude equalizer provided includes resonance point adjustment module 101 and VRM Voltage Regulator Module 102.
Wherein, resonance point adjustment module 101 includes varactor.
VRM Voltage Regulator Module 102 is connected with resonance point adjustment module 101, acts on the electricity on varactor for regulation
Pressure.
Resonance point adjustment module 101, for changing the electricity of varactor under the voltage-regulation of VRM Voltage Regulator Module 102
Hold the resonance point with amplitude of accommodation equalizer.
The amplitude equalizer that the embodiment of the present invention provides may utilize VRM Voltage Regulator Module regulation and makees in varactor two ends
Voltage, thus change the electric capacity of varactor, and then the resonance point of amplitude of accommodation equalizer, this makes amplitude equalizer
Flatness index is adjustable in set point.The amplitude equalizer that the embodiment of the present invention provides can enter according to the requirement of different system
Row regulation, and R&D costs and research and development time need not be greatly reduced for different system redesign amplitude equalizers.
Refer to Fig. 2, it is shown that above-described embodiment provides the physical circuit figure of amplitude equalizer, VRM Voltage Regulator Module 102
It can be adjustable potentiometer.
Resonance point adjustment module 101 includes: the first inductance L1, the first varactor D1, the first resistance R1, the second resistance
R2, the 3rd resistance R3, the 4th resistance R4, the second inductance L2 and the second varactor D2.
First inductance L1 and the first varactor D1 is composed in series the first circuit C1.
Second inductance L2 and the second varactor D2 composes in parallel second circuit C2.
Second end of the second resistance R2 and first end of the 3rd resistance R3 connect.
First end of the first resistance R1, first end of the first circuit C1, first end of the second resistance R2 connect as first
Common port.Second end of the first resistance R1, second end of the first circuit C1, second end of the second resistance R2 connect as second public
End altogether.First end of the input RF_IN and electric capacity C1 of amplitude equalizer is connected, and second end of electric capacity C1 and the first common port are even
Connecing, the second common port is connected with first end of electric capacity C2, the outfan RF_OUT that the second end is amplitude equalizer of electric capacity C2.
First end of the 4th resistance R4 and second end of the second resistance R2 connect, second end of the 4th resistance R4 and the second electricity
First end of road C2 connects, the second end ground connection of second circuit C2.Concrete, second end of the first inductance L1 and the first transfiguration two
The negative pole of pole pipe D1 connects；First end of the second inductance L2 and second end of the 4th resistance R4 connect, the second of the second inductance L2
End ground connection, the negative pole of the second varactor D2 and second end of the 4th resistance R4 connect, the positive pole of the second varactor D2
Ground connection.
Adjustable potentiometer is connected with the first varactor D1 and the second varactor D2 respectively, by changing the first change
The voltage holding diode D1 and the second varactor D2 two ends changes the first varactor D1 and the second varactor D2
Electric capacity, make the first circuit C1 (the first inductance L1 and the series circuit of the first varactor D1) and second circuit C2 (second
Inductance L2 and the parallel circuit of the second varactor D2) resonant frequency change.
Amplitude equalizer also includes the 5th resistance R5 and the 6th resistance R6.
First end of adjustable potentiometer and first end of the 5th resistance R5 connect, the second end ground connection of the 5th resistance R5；Can
Adjusting the 3rd end of potentiometer and first end of the 6th resistance R6 to connect, second end of the 6th resistance R6 connects voltage source, this voltage
Source provides+12V voltage；Second end of adjustable potentiometer and the three-terminal link of adjustable potentiometer；First varactor D1's
First end of negative pole and the 5th resistance R5 connects, and the negative pole of the second varactor D2 and first end of the 5th resistance R5 connect.
The amplitude equalizer that the embodiment of the present invention provides changes the electricity at capister two ends by adjusting adjustable potentiometer
Press thus change the electric capacity of capister, make parallel circuit, capister and inductance that capister and inductance are constituted
The resonant frequency of the series circuit constituted changes, minimum at the amplitude fading of resonance point RF_IN to RF_OUT, is more remote from
The amplitude fading of resonance point RF_IN to RF_OUT is the biggest, thus realizes the function of circuit amplitude flatness regulation.
The present embodiment uses ADS software to emulate amplitude equalizer, and analogous diagram is as it is shown on figure 3, the amplitude of design is equal
Weighing apparatus is mainly used in 25MHz-300MHz, and the simulation result of concrete ADS is shown in accompanying drawing 4 and accompanying drawing 5.Accompanying drawing 4 and accompanying drawing 5 are attached
The simulation result of Fig. 2, from result, in 40MHz-140MHz, the maximal regulated scope of this amplitude equalizer is 7.254dB
(8.472dB-1.173dB=7.254dB), see accompanying drawing 4, change the control voltage of varactor, the width-adjustable that emulation obtains
The minimal adjustment scope of degree equalizer is 2.919dB (8.863dB-5.944dB=2.919dB), sees accompanying drawing 5.
Being tested accompanying drawing PCB material object, it is the vector network analyzer of Deco skill that instrument uses, test result be
In 40MHz-140MHz, the maximal regulated scope of this degree of amplitude modulation equalizer is 5.9dB (7.17dB-1.27dB=5.9dB), changes
Becoming the test voltage of varactor, the minimal adjustment scope of the degree of amplitude modulation equalizer of test is 2.27dB (7.36dB-
5.09dB=2.27dB), the simulation result with accompanying drawing 4 and accompanying drawing 5 coincide.
The amplitude equalizer that the present invention provides may utilize adjustable potentiometer regulation and makees in the first varactor D1 and second
The voltage at varactor D2 two ends, thus change the first varactor D1 and the electric capacity of the second varactor D2, and then
The first capister D1 and the first inductance is made to come series circuit, the second capister D2 and the second inductance L2 structure that L1 is constituted
The resonant frequency of the parallel circuit become changes, i.e. the resonance point of amplitude of accommodation equalizer, and this makes the flat of amplitude equalizer
Smooth degree index is adjustable in set point.The amplitude equalizer that the present invention provides can be adjusted according to the requirement of different system,
And R&D costs and research and development time need not be greatly reduced for different system redesign amplitude equalizers.
In this specification, each embodiment uses the mode gone forward one by one to describe, and what each embodiment stressed is and other
The difference of embodiment, between each embodiment, identical similar portion sees mutually.
Described above to the embodiment provided, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple amendment to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and principle provided in this article and features of novelty phase one
The widest scope caused.
Claims (6)
1. an amplitude equalizer, it is characterised in that including: resonance point adjustment module and VRM Voltage Regulator Module, wherein, described humorous
An adjustment module of shaking includes varactor；
Described VRM Voltage Regulator Module is connected with described resonance point adjustment module, acts on described varactor for regulation
Voltage；
Described resonance point adjustment module, for changing described varactor under the voltage-regulation of described VRM Voltage Regulator Module
Electric capacity is to regulate the resonance point of described amplitude equalizer.
Amplitude equalizer the most according to claim 1, it is characterised in that described VRM Voltage Regulator Module is adjustable potentiometer.
Amplitude equalizer the most according to claim 2, it is characterised in that described resonance point adjustment module includes: the first electricity
Sense, the first varactor, the second inductance, the second varactor, the first resistance, the second resistance, the 3rd resistance and the 4th electricity
Resistance；
Described first inductance and described first varactor are composed in series the first circuit；
Described second inductance and described second varactor compose in parallel second circuit；
Second end of described second resistance is connected with the first end of described 3rd resistance；
First end of described first resistance, the first end of described first circuit, the first end of described second resistance connect as the
One common port；
Second end of described first resistance, the second end of described first circuit, the second end of described second resistance connect as the
Two common ports；
First end of described 4th resistance is connected with the second end of described second resistance, and the second end of described 4th resistance is with described
First end of second circuit connects, the second end ground connection of described second circuit；
Described adjustable potentiometer is connected with described first varactor and described second varactor respectively, by changing institute
The voltage stating the first varactor and described second varactor two ends changes described first varactor and described the
The electric capacity of two varactors, makes the resonant frequency of described first circuit and described second circuit change.
Amplitude equalizer the most according to claim 3, it is characterised in that described first inductance and described first transfiguration two pole
Pipe series connection particularly as follows:
Second end of described first inductance is connected with the negative pole of described first varactor；
Described second inductance in parallel with described second varactor particularly as follows:
First end of described second inductance is connected with the second end of described 4th resistance, the second end ground connection of described second inductance,
The negative pole of described second varactor is connected with the second end of described 4th resistance, and the positive pole of described second varactor connects
Ground.
Amplitude equalizer the most according to claim 4, it is characterised in that the input of described amplitude equalizer is through the first electricity
Holding and be connected with described first common port, described second common port and the second electric capacity connect the output as described amplitude equalizer
End.
Amplitude equalizer the most according to claim 5, it is characterised in that described amplitude equalizer also include the 5th resistance and
6th resistance；
First end of described adjustable potentiometer is connected with the first end of described 5th resistance, the second termination of described 5th resistance
Ground；
3rd end of described adjustable potentiometer is connected with the first end of described 6th resistance, and the second end of described 6th resistance connects
Voltage source；
Second end of described adjustable potentiometer and the three-terminal link of described adjustable potentiometer；
The negative pole of described first varactor is connected with the first end of described 5th resistance, bearing of described second varactor
Pole is connected with the first end of described five resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521066065.2U CN205681454U (en) | 2015-12-18 | 2015-12-18 | A kind of amplitude equalizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521066065.2U CN205681454U (en) | 2015-12-18 | 2015-12-18 | A kind of amplitude equalizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205681454U true CN205681454U (en) | 2016-11-09 |
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ID=57437748
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521066065.2U Expired - Fee Related CN205681454U (en) | 2015-12-18 | 2015-12-18 | A kind of amplitude equalizer |
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| CN (1) | CN205681454U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105721362A (en) * | 2015-12-18 | 2016-06-29 | 航天恒星科技有限公司 | Amplitude equalizer |
| WO2020224771A1 (en) * | 2019-05-08 | 2020-11-12 | Telefonaktiebolaget Lm Ericsson (Publ) | Multi-band equalizers |
-
2015
- 2015-12-18 CN CN201521066065.2U patent/CN205681454U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105721362A (en) * | 2015-12-18 | 2016-06-29 | 航天恒星科技有限公司 | Amplitude equalizer |
| CN105721362B (en) * | 2015-12-18 | 2023-11-03 | 航天恒星科技有限公司 | Amplitude equalizer |
| WO2020224771A1 (en) * | 2019-05-08 | 2020-11-12 | Telefonaktiebolaget Lm Ericsson (Publ) | Multi-band equalizers |
| CN113796018A (en) * | 2019-05-08 | 2021-12-14 | 瑞典爱立信有限公司 | Multiband equalizer |
| CN113796018B (en) * | 2019-05-08 | 2023-02-21 | 瑞典爱立信有限公司 | Multiband equalizer |
| US11716108B2 (en) | 2019-05-08 | 2023-08-01 | Telefonaktiebolaget Lm Ericsson (Publ) | Multi-band equalizers |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161109 Termination date: 20191218 |
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| CF01 | Termination of patent right due to non-payment of annual fee |