CN110176916A - A kind of numerical control attenuation circuit of super big dynamic range - Google Patents
A kind of numerical control attenuation circuit of super big dynamic range Download PDFInfo
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- CN110176916A CN110176916A CN201910585643.XA CN201910585643A CN110176916A CN 110176916 A CN110176916 A CN 110176916A CN 201910585643 A CN201910585643 A CN 201910585643A CN 110176916 A CN110176916 A CN 110176916A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/24—Frequency-independent attenuators
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Abstract
The invention discloses a kind of numerical control attenuation circuits of super big dynamic range, are related to technical field of micro communication, select a switch including numerical-control attenuator, either-or switch, amplifier, the coupling circuit on three tunnels, five；The output of numerical-control attenuator is connect with either-or switch；The output all the way of either-or switch is connect with amplifier, and another output is connect with coupling circuit；Five select a switch include amplifier channel, put-through channel, first coupling branched bottom, second coupling branched bottom, third coupling branched bottom；Amplifier channel is connect with amplifier；Put-through channel and the first coupling branched bottom are coupled by the first via of coupling circuit, and the first coupling branched bottom and the second coupling branched bottom are coupled by the second tunnel of coupling circuit；Second coupling branched bottom and third coupling branched bottom are coupled by the third road of coupling circuit.The attenuation function of final super large dynamic, small stepping is realized using big stepping decaying and small stepping decaying combination.
Description
Technical field
The present invention relates to technical field of micro communication, especially a kind of numerical control attenuation circuit of super big dynamic range.
Background technique
Dynamic range is to measure the important indicator of receive-transmit system performance, and dynamic range is to refer to examine reception signal
The magnitude range for receiving the distortionless input signal of signal is surveyed and made, power magnitude is referred generally to.If receiving signal amplitude mistake
Greatly, then it can cause the distortion of amplifier and introduce noise, and signal amplitude is too small, then signal can not be detected.
The multiple numerical-control attenuators of traditional Larger Dynamic attenuator circuit or variable gain amplifier cascaded design, due to
Matching and space isolation between cascade, it usually needs isolation of amplifier and need the design of point chamber etc., difficulty is larger, attenuation accuracy compared with
Difference, higher cost.
Summary of the invention
The present invention regarding to the issue above and technical need, proposes a kind of numerical control attenuation circuit of super big dynamic range.
Technical scheme is as follows:
A kind of numerical control attenuation circuit of super big dynamic range, comprising: numerical-control attenuator, either-or switch, amplifier, three tunnels
Coupling circuit, five select a switch；
The input connection of the numerical-control attenuator receives signal, and the output of the numerical-control attenuator and either-or switch connect
It connects；
The output all the way of the either-or switch is connect with the amplifier, and another output and the coupling circuit connect
It connects；
Described five to select a switch include that amplifier channel, put-through channel, the first coupling branched bottom, the second coupling branch are logical
Road, third coupling five tunnel of branched bottom input；
The amplifier channel is connect with the amplifier；
The put-through channel and the first coupling branched bottom are by the coupling of the first via of the coupling circuit, and described the
One coupling branched bottom and the second coupling branched bottom are coupled by the second tunnel of the coupling circuit；Second coupling
Branched bottom and third coupling branched bottom are coupled by the third road of the coupling circuit.
Its further technical solution are as follows: the numerical-control attenuator, the either-or switch, the amplifier, described five
A switch is selected to be connected separately with corresponding driver, driver driving element work under the control of corresponding control signal
Make.
Its further technical solution are as follows: the numerical-control attenuator realizes that 0.5~31.5dB, minimum step 0.5dB decline
Subtract.
Its further technical solution are as follows: the amplifier channel switches to the put-through channel and the amplifier breaks
Electricity realizes the decaying of 25dB；
The put-through channel switches to the decaying that the first via coupling branched bottom realizes 25dB；
First via coupling branch switches to the decaying that the second tunnel coupling branched bottom realizes 25dB；
Second tunnel coupling branch switches to the decaying that the third road coupling branched bottom realizes 25dB；
Numerical control attenuation circuit has the super big dynamic range for realizing 131.5dB altogether.
Its further technical solution are as follows: the either-or switch includes first capacitor, the first inductance, first resistor,
Two capacitors, first diode, the second diode, the second inductance, third capacitor, the 4th capacitor, third inductance, the 5th capacitor,
Six capacitors；One end of the first capacitor is connect with one end of the numerical-control attenuator, the other end respectively with first inductance
One end, the anode of the first diode, second diode anode connection, the other end difference of first inductance
Connect with one end of one end of the first resistor and second capacitor, the first resistor and second capacitor it is another
End ground connection, the cathode of the first diode are connect with one end of one end of second inductance and the 4th capacitor respectively,
The other end of second inductance is separately connected one end and the power supply of the third capacitor, another termination of the third capacitor
The other end on ground, the 4th capacitor is connect with the input of the amplifier, the cathode of second diode respectively with it is described
One end of third inductance is connected with one end of the 6th capacitor, and the other end of the 6th capacitor connects the put-through channel,
The other end of the third inductance is separately connected one end and the power supply of the 5th capacitor, the other end ground connection of the 5th capacitor；
The amplifier channel includes the 7th capacitor, the 8th capacitor, the 9th capacitor, the tenth capacitor, the 4th inductance, the 5th electricity
Sense, third diode, the 4th diode, the 5th diode, the 6th diode, the 7th diode, the 8th diode, the 9th 2 pole
Pipe；One end of 7th inductance is connect with the output end of the amplifier, the other end respectively with one end of the 4th inductance,
One end connection of the anode of the third diode, the 8th capacitor, the other end of the 4th inductance are separately connected the 9th
One end of capacitor and power supply, the other end ground connection of the 9th capacitor, the other end of the 8th capacitor are separately connected described the
It is one end of five inductance, the 4th diode, the 5th diode, the 6th diode, the 7th diode, described
The other end of the cathode of the anode of 8th diode and the 9th diode, the 5th inductance is separately connected the tenth capacitor
One end and power supply, the tenth capacitor the other end ground connection, the cathode of the third diode respectively with the 4th diode,
The cathode connect and ground of 5th diode, the 6th diode, the 7th diode, the 8th diode；
The put-through channel include the 11st capacitor, the 12nd capacitor, the 13rd capacitor, the 14th capacitor, the 6th inductance,
7th inductance, the tenth diode, the 11st diode, the 12nd diode, the 13rd diode, the 14th diode, the tenth
Five diodes, the 16th diode；One end of 11st capacitor respectively with one end of the 12nd capacitor, the described 6th
The anode connection of one end of inductance, the tenth diode, the other end of the 6th inductance are separately connected the 13rd electricity
One end of appearance and power supply, the other end ground connection of the 13rd capacitor, the other end of the 12nd capacitor is separately connected described
One end of 7th inductance, the 11st diode, the 12nd diode, the 13rd diode, the described 14th
The cathode of diode, the anode of the 15th diode and the 16th diode；The other end of 7th inductance point
Not Lian Jie the 14th capacitor one end and power supply, the 14th capacitor the other end ground connection, the cathode of the tenth diode
Be separately connected the 11st diode, the 12nd diode, the 13rd diode, the 14th diode,
The cathode of 15th diode and ground connection；
It is described first coupling branched bottom include the 15th capacitor, the 16th capacitor, the 17th capacitor, the 18th capacitor,
8th inductance, the 9th inductance, the 17th diode, the 18th diode, the 19th diode, the 20th diode, the 20th
One diode, the 22nd diode；One end of 15th capacitor is separately connected one end, described of the 16th capacitor
One end of 8th inductance, the 17th diode anode, the other end of the 8th inductance is separately connected the described 17th
One end of capacitor and power supply, the other end ground connection of the 17th capacitor, the 16th capacitor are separately connected the 9th electricity
One end of sense, the 18th diode, the 19th diode, the 20th diode, the 21st pole
The cathode of the cathode of the anode of pipe and the 22nd diode, the 17th diode is separately connected the described 18th
Pole pipe, the 19th diode, the 20th diode, the cathode of the 21st diode and ground connection；
The second coupling branched bottom includes the 19th capacitor, the 20th capacitor, the 21st capacitor, the 22nd electricity
Hold, the tenth inductance, the 11st inductance, the 23rd diode, the 24th diode, the 25th diode, the 26th
Diode；One end of 19th capacitor be separately connected one end of the 20th capacitor, the tenth inductance one end and
The anode of 23rd diode, the other end of the tenth inductance be separately connected the 21st capacitor one end and
Power supply, the other end ground connection of the 21st capacitor, the other end of the 20th capacitor are separately connected the 11st electricity
One end of sense, the 24th diode, the anode of the 25th diode and the yin of the 26th diode
Pole；The cathode of 23rd diode is separately connected the yin of the 24th diode and the 25th diode
Pole is simultaneously grounded；
The third coupling branched bottom includes the 23rd capacitor, the 24th capacitor, the 25th capacitor, the 20th
Six capacitors, the 12nd inductance, the 13rd inductance, the 27th diode, the 28th diode, the 29th diode；Institute
The one end for stating the 23rd capacitor is separately connected one end, described of one end of the 24th capacitor, the 12nd inductance
The other end of the anode of 27th diode, the 12nd inductance is separately connected one end and the electricity of the 25th capacitor
Source, the other end ground connection of the 25th capacitor, the other end of the 24th capacitor are separately connected the 13rd electricity
One end of sense, the anode of the 28th diode and the 29th diode cathode, the 27th pole
The cathode connect and ground of the cathode of pipe and the 28th diode；
The other end of 11st capacitor is coupled with the other end of the 15th capacitor by the first microstrip coupled line,
The other end of 15th capacitor and the other end of the 19th capacitor are coupled by the second microstrip coupled line, and the described tenth
The other end of the other end of nine capacitors and the 23rd capacitor passes through the microstrip coupled line coupling of third；
Described five to select a switch further include the 27th capacitor, the 28th capacitor, the 14th inductance, second resistance；Institute
State the 27th capacitor respectively with the 9th diode, the 16th diode, the 22nd diode, described
26 diodes, the 29th diode anode connected with one end of the 14th inductance, the described 27th
The other end output signal of capacitor, the other end of the 14th inductance are separately connected one end and described of the second resistance
The other end of one end of 28 capacitors, the other end of the second resistance and the 28th capacitor is grounded.
The method have the benefit that:
Opposite big stepping attenuation function is realized using the bypass measure of amplifier, is reached using coupler and is declined with big stepping
Subtract equivalent function, the decaying function of final super large dynamic, small stepping is realized using big stepping decaying and small stepping decaying combination
Can, it is combined, is avoided because of pure numerical-control attenuator and variable gain amplifier cascade using multiple functions such as amplification, coupling, switches
Matching is difficult and influences attenuation range and attenuation accuracy.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the numerical control attenuation circuit for the super big dynamic range that the application one embodiment provides.
Fig. 2 is the circuit diagram of the numerical control attenuation circuit for the super big dynamic range that the application one embodiment provides.
Specific embodiment
The following further describes the specific embodiments of the present invention with reference to the drawings.
The application realized by way of multiple-path coupler, amplifier and PIN switch combination multiselect one Larger Dynamic range,
High-precision big stepping numerical control attenuation circuit is combined into super large dynamically small stepping in conjunction with one small stepping numerical-control attenuator
High-precision numerical control attenuation circuit.
Fig. 1 is the structural schematic diagram of the numerical control attenuation circuit for the super big dynamic range that the application one embodiment provides, such as
Shown in Fig. 1, the numerical control attenuation circuit include: numerical-control attenuator 1, either-or switch 2, amplifier 3, three tunnels coupling circuit 4, five
Select a switch 5.
The input connection of numerical-control attenuator 1 receives signal, and the output of numerical-control attenuator 1 is connect with either-or switch 2.Two choosings
The output all the way of one switch 2 is connect with amplifier 3, and another output is connect with coupling circuit 4.Five select a switch 5 to include amplification
Device channel, put-through channel, the first coupling branched bottom, the second coupling branched bottom, third coupling five tunnel of branched bottom input.It puts
Big device channel is connect with amplifier 3；Put-through channel and the first coupling branched bottom are coupled by the first via of coupling circuit 4, the
One coupling branched bottom and the second coupling branched bottom are coupled by the second tunnel of coupling circuit 4；Second coupling branched bottom and
Third couples branched bottom and is coupled by the third road of coupling circuit 4.By numerical-control attenuator, multiple-path coupler, amplifier with
And the mode of PIN switch combination multiselect one, the control to gain is realized instead of pure numerical-control attenuator and variable gain amplifier, it can
To guarantee super big dynamic range and higher precision.
Optionally, as shown in Figure 1, numerical-control attenuator 1, either-or switch 2, amplifier 3, five select a switch 5 to be separately connected
There is corresponding driver, driver driving element under the control of corresponding control signal works.
Optionally, numerical-control attenuator 1 realizes the decaying of 0.5~31.5dB, minimum step 0.5dB.
Optionally, amplifier channel switches to put-through channel and amplifier 3 is powered off to the decaying for realizing 25dB；Put-through channel
Switch to the decaying that first via coupling branched bottom realizes 25dB；First via coupling branch switches to the second tunnel coupling branched bottom
Realize the decaying of 25dB；Second tunnel coupling branch switches to the decaying that third road coupling branched bottom realizes 25dB；Numerical control attenuation
Circuit has the super big dynamic range for realizing 131.5dB altogether.
In conjunction with reference Fig. 1, when numerical control attenuation circuit is at 0 state (i.e. default conditions), switching gate amplifier channel, numerical control
Attenuator 1 realizes the decaying of 0.5~31.5dB, the decaying of minimum step 0.5dB；Switching gate put-through channel, and by amplifier 3
Power off the decaying that 25dB can be achieved；Switching gate couples branch 1 (i.e. the first via couples branch), can be on the basis of put-through channel
Further realize the decaying of 25dB；It couples branch successively and the attenuation range of 75dB can be achieved altogether, therefore, entire numerical control attenuation electricity
Road has the dynamic range of maximum achievable 31.5+25+75=131.5dB altogether.And in practical application, due to attenuation accuracy, decaying
The demand of the indexs such as flatness will need the decaying state to numerical-control attenuator to redistribute, therefore reality at least can be real
The super big dynamic range of existing 125dB, switching channels select and the corresponding relationship of dynamic range can be realized referring to table 1:
Table 1
In conjunction with reference Fig. 2, it illustrates the circuit diagrams of numerical control attenuation circuit, wherein either-or switch 2 includes first
Capacitor C1, the first inductance L1, first resistor R1, the second capacitor C2, first diode D1, the second diode D2, the second inductance L2,
Third capacitor C3, the 4th capacitor C4, third inductance L3, the 5th capacitor C5, the 6th capacitor C6；One end of first capacitor C1 and numerical control
One end of attenuator 1 connects, the other end respectively with one end of the first inductance L1, the anode of first diode D1, the second diode
The anode of D2 connects, and the other end of the first inductance L1 is connect with one end of one end of first resistor R1 and the second capacitor C2 respectively,
The other end of first resistor R1 and the second capacitor C2 ground connection, the cathode of first diode D1 respectively with one end of the second inductance L2 and
One end of 4th capacitor C4 connects, and the other end of the second inductance L2 is separately connected one end and the power supply of third capacitor C3, third electricity
Hold the other end ground connection of C3, the other end of the 4th capacitor C4 is connect with the input of amplifier 3, the cathode difference of the second diode D2
It is connect with one end of one end of third inductance L3 and the 6th capacitor C6, the other end of the 6th capacitor C6 connects put-through channel, third
The other end of inductance L3 is separately connected one end and the power supply of the 5th capacitor C5, the other end ground connection of the 5th capacitor C5；Amplifier is logical
Road includes the 7th capacitor C7, the 8th capacitor C8, the 9th capacitor C9, the tenth capacitor C10, the 4th inductance L4, the 5th inductance L5, third
Diode D3, the 4th diode D4, the 5th diode D5, the 6th diode D6, the 7th diode D7, the 8th diode D8,
Nine diode D9；One end of 7th inductance L7 is connect with the output end of amplifier 3, the other end respectively with the 4th inductance L4 one
One end connection at end, the anode of third diode D3, the 8th capacitor C8, the other end of the 4th inductance L4 are separately connected the 9th capacitor
One end of C9 and power supply, the other end ground connection of the 9th capacitor C9, the other end of the 8th capacitor C8 are separately connected the 5th inductance L5's
One end, the 4th diode D4, the 5th diode D5, the 6th diode D6, the 7th diode D7, the 8th diode D8 anode and
The cathode of 9th diode D9, the other end of the 5th inductance L5 are separately connected one end and the power supply of the tenth capacitor C10, the tenth capacitor
The other end of C10 is grounded, the cathode of third diode D3 respectively with the 4th diode D4, the 5th diode D5, the 6th diode
The cathode connect and ground of D6, the 7th diode D7, the 8th diode D8；Put-through channel includes the 11st capacitor C11, the 12nd
Capacitor C12, the 13rd capacitor C13, the 14th capacitor C14, the 6th inductance L6, the 7th inductance L7, the tenth diode D10, the tenth
One diode D11, the 12nd diode D12, the 13rd diode D13, the 14th diode D14, the 15th diode D15,
16th diode D16；One end of 11st capacitor C11 respectively with one end of the 12nd capacitor C12, the 6th inductance L6 one
The anode connection at end, the tenth diode D10, the other end of the 6th inductance L6 are separately connected one end and the electricity of the 13rd capacitor C13
Source, the other end ground connection of the 13rd capacitor C13, the other end of the 12nd capacitor C12 are separately connected one end of the 7th inductance L7, the
11 diode D11, the 12nd diode D12, the 13rd diode D13, the 14th diode D14, the 15th diode D15
Anode and the 16th diode D16 cathode；The other end of 7th inductance L7 be separately connected the 14th capacitor C14 one end and
Power supply, the other end ground connection of the 14th capacitor C14, the cathode of the tenth diode D10 are separately connected the 11st diode D11, the
12 diode D12, the 13rd diode D13, the 14th diode D14, the cathode of the 15th diode D15 and ground connection；The
One coupling branched bottom includes the 15th capacitor C15, the 16th capacitor C16, the 17th capacitor C17, the 18th capacitor C18, the
Eight inductance L8, the 9th inductance L9, the 17th diode D17, the 18th diode D18, the 19th diode D19, the 22nd
Pole pipe D20, the 21st diode D21, the 22nd diode D22；One end of 15th capacitor C15 is separately connected the 16th
One end of capacitor C16, one end of the 8th inductance L8, the 17th diode D17 anode, the other end of the 8th inductance L8 connects respectively
Connect one end and the power supply of the 17th capacitor C17, the other end ground connection of the 17th capacitor C17, the 16th capacitor C16 is separately connected the
One end of nine inductance L9, the 18th diode D18, the 19th diode D19, the 20th diode D20, the 21st diode
The cathode of the cathode of the anode of D21 and the 22nd diode D22, the 17th diode D17 is separately connected the 18th diode
D18, the 19th diode D19, the 20th diode D20, the cathode of the 21st diode D21 and ground connection；Second coupling point
Subchannel includes the 19th capacitor C19, the 20th capacitor C20, the 21st capacitor C21, the 22nd capacitor C22, the tenth electricity
Feel L10, the 11st inductance L11, the 23rd diode D23, the 24th diode D24, the 25th diode D25, the
26 diode D26；One end of 19th capacitor C19 is separately connected one end of the 20th capacitor C20, the tenth inductance L10
The other end of the anode of one end and the 23rd diode D23, the tenth inductance L10 is separately connected the one of the 21st capacitor C21
End and power supply, the other end ground connection of the 21st capacitor C21, the other end of the 20th capacitor C20 are separately connected the 11st inductance
One end of L11, the 24th diode D24, the anode of the 25th diode D25 and the cathode of the 26th diode D26；
The cathode of 23rd diode D23 is separately connected the cathode of the 24th diode D24 and the 25th diode D25 and connects
Ground；It includes the 23rd capacitor C23, the 24th capacitor C24, the 25th capacitor C25, the 20th that third, which couples branched bottom,
Six capacitor C26, the 12nd inductance L12, the 13rd inductance L13, the 27th diode D27, the 28th diode D28,
29 diode D29；One end of 23rd capacitor C23 is separately connected one end of the 24th capacitor C24, the 12nd inductance
One end of L12, the 27th diode D27 anode, the other end of the 12nd inductance L12 is separately connected the 25th capacitor
One end of C25 and power supply, the other end ground connection of the 25th capacitor C25, the other end of the 24th capacitor C24 are separately connected the
One end, the anode of the 28th diode D28 and the cathode of the 29th diode D29 of 13 inductance L13, the 27th
The cathode connect and ground of the cathode of pole pipe D27 and the 28th diode D28；The other end and the tenth of 11st capacitor C11
The other end of five capacitor C15 passes through the first microstrip coupled line coupling, the other end and the 19th capacitor C19 of the 15th capacitor C15
The other end pass through the second microstrip coupled line coupling, the other end of the 19th capacitor C19 and the other end of the 23rd capacitor C23
Pass through the microstrip coupled line coupling of third；Five to select a switch further include the 27th capacitor C27, the 28th capacitor C28, the 14th
Inductance L14, second resistance R2；27th capacitor C27 respectively with the 9th diode D9, the 16th diode D16, the 22nd
One end connection of diode D22, the 26th diode D26, the anode of the 29th diode D29 and the 14th inductance L14,
The other end of the other end output signal of 27th capacitor C27, the 14th inductance L14 is separately connected one end of second resistance R2
With one end of the 28th capacitor C28, the other end of the other end of second resistance R2 and the 28th capacitor C28 are grounded.
Above-described is only preferred embodiments of the invention, and present invention is not limited to the above embodiments.It is appreciated that this
The other improvements and change that field technical staff directly exports or associates without departing from the spirit and concept in the present invention
Change, is considered as being included within protection scope of the present invention.
Claims (5)
1. a kind of numerical control attenuation circuit of super big dynamic range characterized by comprising numerical-control attenuator, is put either-or switch
Big device, the coupling circuit on three tunnels, five select a switch；
The input connection of the numerical-control attenuator receives signal, and the output of the numerical-control attenuator is connect with either-or switch；
The output all the way of the either-or switch is connect with the amplifier, and another output is connect with the coupling circuit；
Described five select a switch include amplifier channel, put-through channel, first coupling branched bottom, second coupling branched bottom,
Third couples the input of five tunnel of branched bottom；
The amplifier channel is connect with the amplifier；
The put-through channel and the first coupling branched bottom are coupled by the first via of the coupling circuit, first coupling
It closes branched bottom and the second coupling branched bottom is coupled by the second tunnel of the coupling circuit；Second coupling branch
Channel and third coupling branched bottom are coupled by the third road of the coupling circuit.
2. the numerical control attenuation circuit of super big dynamic range according to claim 1, which is characterized in that the numerical control attenuation
Device, the either-or switch, the amplifier, described five select a switch to be connected separately with corresponding driver, the driver
Driving element works under the control of corresponding control signal.
3. the numerical control attenuation circuit of super big dynamic range according to claim 1, which is characterized in that the numerical-control attenuator
Realize the decaying of 0.5~31.5dB, minimum step 0.5dB.
4. the numerical control attenuation circuit of super big dynamic range according to claim 1, which is characterized in that the amplifier channel
It switches to the put-through channel and the amplifier is powered off to the decaying for realizing 25dB；
The put-through channel switches to the decaying that the first via coupling branched bottom realizes 25dB；
First via coupling branch switches to the decaying that the second tunnel coupling branched bottom realizes 25dB；
Second tunnel coupling branch switches to the decaying that the third road coupling branched bottom realizes 25dB；
Numerical control attenuation circuit has the super big dynamic range for realizing 131.5dB altogether.
5. the numerical control attenuation circuit of super big dynamic range according to any one of claims 1 to 4, which is characterized in that described two
Selecting a switch includes first capacitor, the first inductance, first resistor, the second capacitor, first diode, the second diode, the second electricity
Sense, third capacitor, the 4th capacitor, third inductance, the 5th capacitor, the 6th capacitor；One end of the first capacitor and the numerical control
One end of attenuator connects, the other end respectively with one end of first inductance, the anode of the first diode, described second
The anode of diode connects, the other end of first inductance respectively with one end of the first resistor and second capacitor
One end connection, the other end ground connection of the first resistor and second capacitor, the cathode of the first diode respectively with institute
The one end for stating the second inductance is connected with one end of the 4th capacitor, and the other end of second inductance is separately connected the third
One end of capacitor and power supply, the other end ground connection of the third capacitor, the other end and the amplifier of the 4th capacitor
Input connection, the cathode of second diode connect with one end of the third inductance and one end of the 6th capacitor respectively
It connects, the other end of the 6th capacitor connects the put-through channel, and the other end of the third inductance is separately connected the 5th capacitor
One end and power supply, the 5th capacitor the other end ground connection；
The amplifier channel include the 7th capacitor, the 8th capacitor, the 9th capacitor, the tenth capacitor, the 4th inductance, the 5th inductance,
Third diode, the 4th diode, the 5th diode, the 6th diode, the 7th diode, the 8th diode, the 9th diode；
One end of 7th inductance is connect with the output end of the amplifier, the other end respectively with one end of the 4th inductance, institute
One end connection of the anode, the 8th capacitor of third diode is stated, the other end of the 4th inductance is separately connected the 9th electricity
One end of appearance and power supply, the other end ground connection of the 9th capacitor, the other end of the 8th capacitor are separately connected the described 5th
One end of inductance, the 4th diode, the 5th diode, the 6th diode, the 7th diode, described
The other end of the cathode of the anode of eight diodes and the 9th diode, the 5th inductance is separately connected the one of the tenth capacitor
End and power supply, the tenth capacitor the other end ground connection, the cathode of the third diode respectively with the 4th diode, institute
State the cathode connect and ground of the 5th diode, the 6th diode, the 7th diode, the 8th diode；
The put-through channel includes the 11st capacitor, the 12nd capacitor, the 13rd capacitor, the 14th capacitor, the 6th inductance, the 7th
Inductance, the tenth diode, the 11st diode, the 12nd diode, the 13rd diode, the 14th diode, the 15th
Pole pipe, the 16th diode；One end of 11st capacitor respectively with one end of the 12nd capacitor, the 6th inductance
One end, the tenth diode anode connection, the other end of the 6th inductance is separately connected the 13rd capacitor
One end and power supply, the other end ground connection of the 13rd capacitor, the other end of the 12nd capacitor are separately connected the described 7th
One end of inductance, the 11st diode, the 12nd diode, the 13rd diode, the 14th pole
The cathode of pipe, the anode of the 15th diode and the 16th diode；The other end of 7th inductance connects respectively
Connect one end and the power supply of the 14th capacitor, the other end ground connection of the 14th capacitor, the cathode difference of the tenth diode
Connect the 11st diode, the 12nd diode, the 13rd diode, the 14th diode, described
The cathode of 15th diode and ground connection；
The first coupling branched bottom includes the 15th capacitor, the 16th capacitor, the 17th capacitor, the 18th capacitor, the 8th
Inductance, the 9th inductance, the 17th diode, the 18th diode, the 19th diode, the 20th diode, the 21st
Pole pipe, the 22nd diode；One end of 15th capacitor is separately connected one end of the 16th capacitor, the described 8th
One end of inductance, the 17th diode anode, the other end of the 8th inductance is separately connected the 17th capacitor
One end and power supply, the other end ground connection of the 17th capacitor, the 16th capacitor is separately connected the 9th inductance
One end, the 18th diode, the 19th diode, the 20th diode, the 21st diode
The cathode of the cathode of anode and the 22nd diode, the 17th diode is separately connected the 18th pole
Pipe, the 19th diode, the 20th diode, the cathode of the 21st diode and ground connection；
It is described second coupling branched bottom include the 19th capacitor, the 20th capacitor, the 21st capacitor, the 22nd capacitor,
Tenth inductance, the 11st inductance, the 23rd diode, the 24th diode, the 25th diode, the 26th pole
Pipe；One end of 19th capacitor is separately connected one end of the 20th capacitor, one end of the tenth inductance and described
The other end of the anode of 23rd diode, the tenth inductance is separately connected one end and the electricity of the 21st capacitor
Source, the other end ground connection of the 21st capacitor, the other end of the 20th capacitor are separately connected the 11st inductance
One end, the 24th diode, the anode of the 25th diode and the cathode of the 26th diode；
The cathode of 23rd diode is separately connected the cathode of the 24th diode and the 25th diode
And it is grounded；
The third coupling branched bottom includes the 23rd capacitor, the 24th capacitor, the 25th capacitor, the 26th electricity
Hold, the 12nd inductance, the 13rd inductance, the 27th diode, the 28th diode, the 29th diode；Described
One end of 23 capacitors is separately connected one end of the 24th capacitor, one end of the 12nd inductance, described second
The other end of the anode of 17 diodes, the 12nd inductance is separately connected one end and the power supply of the 25th capacitor,
The other end of 25th capacitor is grounded, and the other end of the 24th capacitor is separately connected the 13rd inductance
One end, the anode of the 28th diode and the 29th diode cathode, the 27th diode
The cathode connect and ground of cathode and the 28th diode；
The other end of 11st capacitor is coupled with the other end of the 15th capacitor by the first microstrip coupled line, described
The other end of the other end of 15th capacitor and the 19th capacitor passes through the second microstrip coupled line coupling, the 19th electricity
The other end of the other end of appearance and the 23rd capacitor passes through the microstrip coupled line coupling of third；
Described five to select a switch further include the 27th capacitor, the 28th capacitor, the 14th inductance, second resistance；Described
27 capacitors respectively with the 9th diode, the 16th diode, the 22nd diode, the described 20th
Six diodes, the 29th diode anode connected with one end of the 14th inductance, the 27th capacitor
Other end output signal, the other end of the 14th inductance is separately connected one end and the described 20th of the second resistance
The other end of one end of eight capacitors, the other end of the second resistance and the 28th capacitor is grounded.
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| CN201910585643.XA CN110176916A (en) | 2019-07-01 | 2019-07-01 | A kind of numerical control attenuation circuit of super big dynamic range |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111049499A (en) * | 2019-11-24 | 2020-04-21 | 扬州海科电子科技有限公司 | Ultra-wideband low-insertion-loss large-attenuation numerical control attenuation circuit |
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2019
- 2019-07-01 CN CN201910585643.XA patent/CN110176916A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111049499A (en) * | 2019-11-24 | 2020-04-21 | 扬州海科电子科技有限公司 | Ultra-wideband low-insertion-loss large-attenuation numerical control attenuation circuit |
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