CN207218677U - Radiating circuit for the measurement of S-band precipitation particles scattering experiment - Google Patents
Radiating circuit for the measurement of S-band precipitation particles scattering experiment Download PDFInfo
- Publication number
- CN207218677U CN207218677U CN201720918953.5U CN201720918953U CN207218677U CN 207218677 U CN207218677 U CN 207218677U CN 201720918953 U CN201720918953 U CN 201720918953U CN 207218677 U CN207218677 U CN 207218677U
- Authority
- CN
- China
- Prior art keywords
- electric capacity
- circuit
- phase
- resistance
- radio frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of radiating circuit for the measurement of S-band precipitation particles scattering experiment, including direct current regulation circuit, crystal oscillator reference circuit, the first phase-locked loop circuit, the second phase-locked loop circuit, the first radio frequency amplifier, the first low-pass filter circuit, bandpass filter, the second radio frequency amplifier, the 3rd radio frequency amplifier and the second low-pass filter circuit；Crystal oscillator reference circuit is connected with the first phase-locked loop circuit and the second phase-locked loop circuit, first phase-locked loop circuit is connected with the first radio frequency amplifier, first radio frequency amplifier successively with the first low-pass filter circuit, bandpass filter connection connects with the second radio frequency amplifier, second phase-locked loop circuit is connected with the 3rd radio frequency amplifier, 3rd radio frequency amplifier is connected with the second low-pass filter circuit, the utility model produces the radiofrequency signal of stable frequency by the first phase-locked loop circuit, the mixing local oscillation signal of stable frequency is produced by the second phase-locked loop circuit, meet measurement request, stable output signal.
Description
Technical field
Radar detection field is the utility model is related to, more particularly to a kind of S-band precipitation particles scattering experiment that is used for measures
Radiating circuit.
Background technology
Conventional centimeter wave radar quantitative measurement of rainfall technology plays in weather forecast, particularly flood forecast work
Particularly important effect.Radar electromagnetic wave can be scattered by the influence of cloud and precipitation, inhaled when propagating in an atmosphere
Phenomena such as receiving and decaying, this not only leverages the remote sensing capability of normal radar, while also affects and utilize radar data essence
The microphysics parameter of true retrieving precipitation.Therefore scattering properties of the precipitation particles in superhigh frequency band is studied for Atmospheric Survey, gas
Waiting the fields such as remote sensing has highly important meaning.In order to better profit from S-band meteorological radar sounding and retrieving precipitation particle,
It is badly in need of a kind of radio frequency transmitter circuitry of transmitting 3GHz frequency electromagnetics at present, the radiating circuit can launch electromagnetism letter in laboratory
Number, provide support for the scattering properties research of precipitation particles.
Utility model content
Technical problem to be solved in the utility model is to provide one kind for above-mentioned the deficiencies in the prior art to be used for S-band
The radiating circuit of precipitation particles scattering experiment measurement, this radiating circuit for being used for the measurement of S-band precipitation particles scattering experiment can lead to
The radiofrequency signal that the first phase-locked loop circuit produces stable frequency is crossed, the mixing sheet of stable frequency is produced by the second phase-locked loop circuit
Shake signal, meets measurement request, stable output signal.
To realize above-mentioned technical purpose, the technical scheme that the utility model is taken is：
A kind of radiating circuit for the measurement of S-band precipitation particles scattering experiment, including the reference of direct current regulation circuit, crystal oscillator
Circuit, the first phase-locked loop circuit, the second phase-locked loop circuit, the first radio frequency amplifier, the first low-pass filter circuit, bandpass filtering
Device, the second radio frequency amplifier, the 3rd radio frequency amplifier, the second low-pass filter circuit and transmitting antenna；The crystal oscillator reference circuit
Be connected respectively with the first phase-locked loop circuit and the second phase-locked loop circuit by crystal oscillator power-devided circuit, first phase-locked loop circuit with
First radio frequency amplifier is connected, and first radio frequency amplifier is connected with the first low-pass filter circuit, first LPF
Circuit is connected with bandpass filter, and the bandpass filter is connected with the second radio frequency amplifier, second radio frequency amplifier with
Transmitting antenna is connected, and second phase-locked loop circuit is connected with the 3rd radio frequency amplifier, the 3rd radio frequency amplifier and second
Low-pass filter circuit connects, and second low-pass filter circuit is connected with SMA connectors；The direct current regulation circuit respectively with crystalline substance
Shake reference circuit, the first phase-locked loop circuit, the second phase-locked loop circuit, the first radio frequency amplifier, the second radio frequency amplifier and the 3rd
Radio frequency amplifier connects.
As the further improved technical scheme of the utility model, first phase-locked loop circuit include the first phase discriminator,
First loop filter circuit, the first voltage controlled oscillator, first resistor power splitter and the first attenuator, first phase discriminator and
One loop filter circuit is connected, and first loop filter circuit is connected with the first voltage controlled oscillator, first VCO
Device is connected with first resistor power splitter, and the first resistor power splitter connects with the first attenuator and the first radio frequency amplifier respectively
Connect, first attenuator is connected with the first phase discriminator.
As the further improved technical scheme of the utility model, second phase-locked loop circuit include the second phase discriminator,
Second loop filter circuit, the second voltage controlled oscillator, second resistance power splitter and the second attenuator, second phase discriminator and
Second Ring Road filter circuit is connected, and second loop filter circuit is connected with the second voltage controlled oscillator, second VCO
Device is connected with second resistance power splitter, and the second resistance power splitter connects with the second attenuator and the 3rd radio frequency amplifier respectively
Connect, second attenuator is connected with the second phase discriminator.
As the further improved technical scheme of the utility model, in addition to PCB, the direct current regulation circuit,
Crystal oscillator reference circuit, the first phase-locked loop circuit, the second phase-locked loop circuit, the first radio frequency amplifier, the first low-pass filter circuit, band
Bandpass filter, the second radio frequency amplifier, the 3rd radio frequency amplifier, the second low-pass filter circuit, transmitting antenna and SMA connectors are equal
It is arranged in PCB, the PCB is double-clad board, and the size of PCB is 205.3mm*247.1mm,
The sheet material of PCB is FR4 sheet materials, and the thickness of slab of PCB is 1mm, and the relative dielectric constant of PCB is 4.3.
As the further improved technical scheme of the utility model, the crystal oscillator reference circuit includes constant-temperature crystal oscillator Y1, electricity
It is brilliant to hinder R1, variable resistor R2, electrochemical capacitor C1, electrochemical capacitor C2, electric capacity C3, electric capacity C4, electric capacity C5 and electric capacity C6, the constant temperature
The Y1 pin 1 of shaking is connected with variable resistor R2 sliding end, one end connection ground wire and the other end and electricity of the variable resistor R2
Hinder R1 one end connection, the other end of the resistance R1, electrochemical capacitor C1 positive pole, electric capacity C3 one end and electric capacity C4 one end
It is connected with direct current regulation circuit, the negative pole of the electrochemical capacitor C1, the electric capacity C3 other end connect ground with the electric capacity C4 other end
Line, the pin 5 of the constant-temperature crystal oscillator Y1 connect ground wire, the pin 3 of the constant-temperature crystal oscillator Y1, electrochemical capacitor C2 positive pole, electric capacity
C5 one end and electric capacity C6 one end are connected with direct current regulation circuit, negative pole, the electric capacity C5 other end of the electrochemical capacitor C2
Ground wire is connected with the electric capacity C6 other end.
As the further improved technical scheme of the utility model, the crystal oscillator power-devided circuit include resistance R3, resistance R4,
Resistance R5, electric capacity C7 and electric capacity C8, one end of the resistance R3 are connected with constant-temperature crystal oscillator Y1 pin 4, and the resistance R3's is another
One end is connected with resistance R4 one end and resistance R5 one end respectively, and the other end of the resistance R4 is locked by electric capacity C7 and first
Phase loop circuit is connected, and the other end of the resistance R5 is connected by electric capacity C8 with the second phase-locked loop circuit.
As the further improved technical scheme of the utility model, first loop filter circuit and the second loop filtering
Circuit includes electric capacity C9, electric capacity C10, electric capacity C11, electric capacity C12, electric capacity C13, resistance R6, resistance R7 and resistance R8, the electricity
Appearance C9 one end, resistance R6 one end, resistance R7 one end are connected with the first phase discriminator or the second phase discriminator, the resistance R7
The other end be connected respectively with electric capacity C10 one end and resistance R8 one end, the other end of the resistance R8, the one of electric capacity C11
End and electric capacity C12 one end are connected with the first voltage controlled oscillator or the second voltage controlled oscillator, the other end of the resistance R6 and
Electric capacity C13 one end connection, the other end, the electric capacity C13 other end, the electric capacity C10 other end, the electric capacity C11 of the electric capacity C9
The other end and the electric capacity C12 other end be all connected with ground wire.
As the further improved technical scheme of the utility model, first low-pass filter circuit and the second LPF
Circuit includes inductance L1, inductance L2, inductance L3, electric capacity C17, electric capacity C14, electric capacity C15 and electric capacity C16, the inductance L1's
One end and electric capacity C17 one end are connected with the first radio frequency amplifier or the 3rd radio frequency amplifier, the other end of the inductance L1
Be connected respectively with electric capacity C14 one end and inductance L2 one end, the other end of the inductance L2 respectively with electric capacity C15 one end and
Inductance L3 one end connection, the other end of the inductance L3 and electric capacity C16 one end connect with bandpass filter or SMA connectors
Connect, the other end of the electric capacity C17, the electric capacity C14 other end, the electric capacity C15 other end and electric capacity the C16 other end are all connected with
Ground wire.
The utility model can export 3.000GHz radiofrequency signal by the first phase-locked loop circuit, can pass through the second lock
The structure of phase loop circuit output 3.002GHz radiofrequency signal, the first phase-locked loop circuit and the second phase-locked loop circuit is identical.It is logical
Crossing the single-chip microcomputer of external circuit can control whole phaselocked loop to produce constant frequency to the corresponding data of phase-locked loop chip write-in
Radiofrequency signal, the first phase-locked loop circuit produce the signal that frequency is 3.000GHz, and transmitting antenna is connected by its spoke by coaxial line
It is incident upon in space；Second phase-locked loop circuit produces 3.002GHz signals, receiving circuit is connected to by coaxial line, as mixing
Reference signal.The utility model circuit is simple, and cost is cheap.The output of single-frequency can be realized, output frequency is controllable, can be defeated
It is 2880MHz ~ 3340MHz to go out frequency range, high-power output, and its feature is as follows:First, signal quality is high and stably, frequency can
Control, stable output signal, the frequency of output can be accurate to 1MHz；Second, the high-power of transmitting adds transmission range, make measurement
Apart from farther.
Brief description of the drawings
Fig. 1 is circuit theory schematic diagram of the present utility model.
Fig. 2 is the circuit diagram of crystal oscillator reference circuit of the present utility model.
Fig. 3 is the circuit diagram of crystal oscillator power-devided circuit of the present utility model.
Fig. 4 is the circuit diagram of the first loop filter circuit of the present utility model or the second loop filter circuit.
Fig. 5 is the circuit diagram of the first low-pass filter circuit of the present utility model or the second low-pass filter circuit.
Fig. 6 is the first phase-locked loop circuit output frequency of the present utility model and the curve map of time.
Fig. 7 is the output spectrum of radio frequency signals that frequency spectrograph of the present utility model measures.
Embodiment
Specific embodiment of the present utility model is further illustrated below according to Fig. 1 to Fig. 7：
Referring to Fig. 1, a kind of radiating circuit for the measurement of S-band precipitation particles scattering experiment, including direct current regulation circuit
1st, crystal oscillator reference circuit 2, the first phase-locked loop circuit, the second phase-locked loop circuit, the first radio frequency amplifier 9, the first LPF electricity
Road 10, bandpass filter 11, the second radio frequency amplifier 12, the 3rd radio frequency amplifier 19, the second low-pass filter circuit 20 and transmitting
Antenna 13；The crystal oscillator reference circuit 2 by crystal oscillator power-devided circuit 3 respectively with the first phase-locked loop circuit and the second phase-locked loop circuit
Connection, first phase-locked loop circuit are connected with the first radio frequency amplifier 9, the low pass filtered of the first radio frequency amplifier 9 and first
Wave circuit 10 is connected, and first low-pass filter circuit 10 is connected with bandpass filter 11, the bandpass filter 11 and second
Radio frequency amplifier 12 is connected, and second radio frequency amplifier 12 is connected with transmitting antenna 13, second phase-locked loop circuit and
Three radio frequency amplifiers 19 are connected, and the 3rd radio frequency amplifier 19 is connected with the second low-pass filter circuit 20, second low pass
Filter circuit 20 is connected with SMA connectors；The direct current regulation circuit 1 is electric with crystal oscillator reference circuit 2, the first phaselocked loop respectively
Road, the second phase-locked loop circuit, the first radio frequency amplifier 9, the second radio frequency amplifier 12 and the 3rd radio frequency amplifier 19 connect.
Further, referring to Fig. 1, first phase-locked loop circuit include the first phase discriminator 4, the first loop filter circuit 5,
First voltage controlled oscillator 6, the attenuator 8 of first resistor power splitter 7 and first, the loop filtering of the first phase discriminator 4 and first electricity
Road 5 is connected, and first loop filter circuit 5 is connected with the first voltage controlled oscillator 6, first voltage controlled oscillator 6 and first
Resistive power splitter 7 is connected, and the first resistor power splitter 7 is connected with the first attenuator 8 and the first radio frequency amplifier 9 respectively, institute
The first attenuator 8 is stated to be connected with the first phase discriminator 4.
Further, the second phase discriminator 14, the second loop filter circuit are included referring to Fig. 1, second phase-locked loop circuit
15th, the second voltage controlled oscillator 16, the attenuator 18 of second resistance power splitter 17 and second, the loop of the second phase discriminator 14 and second
Filter circuit 15 is connected, and second loop filter circuit 15 is connected with the second voltage controlled oscillator 16, second VCO
Device 16 is connected with second resistance power splitter 17, and the second resistance power splitter 17 is put with the second attenuator 18 and the 3rd radio frequency respectively
Big device 19 is connected, and second attenuator 18 is connected with the second phase discriminator 14.
Further, in addition to PCB, the direct current regulation circuit 1, crystal oscillator reference circuit 2, the first phaselocked loop are electric
Road, the second phase-locked loop circuit, the first radio frequency amplifier 9, the first low-pass filter circuit 10, bandpass filter 11, the second radio frequency are put
Big device 12, the 3rd radio frequency amplifier 19, the second low-pass filter circuit 20, transmitting antenna 13 and SMA connectors are arranged at PCB electricity
On the plate of road, the PCB is double-clad board, and the size of PCB is 205.3mm*247.1mm, PCB
Sheet material is FR4 sheet materials, and the thickness of slab of PCB is 1mm, and the relative dielectric constant of PCB is 4.3.
Further, constant-temperature crystal oscillator Y1, resistance R1, variable resistor R2, electricity are included referring to Fig. 2, the crystal oscillator reference circuit 2
Solve electric capacity C1, electrochemical capacitor C2, electric capacity C3, electric capacity C4, electric capacity C5 and electric capacity C6, the pin 1 of the constant-temperature crystal oscillator Y1 with it is variable
Resistance R2 sliding end connection, one end connection ground wire and the other end of the variable resistor R2 are connected with resistance R1 one end, institute
State the resistance R1 other end, electrochemical capacitor C1 positive pole, electric capacity C3 one end and electric capacity C4 one end and direct current regulation circuit 1 connects
Connect, the negative pole of the electrochemical capacitor C1, the electric capacity C3 other end connect ground wire, the constant-temperature crystal oscillator Y1 with the electric capacity C4 other end
Pin 5 connect ground wire, the pin 3 of the constant-temperature crystal oscillator Y1, electrochemical capacitor C2 positive pole, electric capacity C5 one end and electric capacity C6
One end is connected with direct current regulation circuit 1, and the other end of the negative pole of the electrochemical capacitor C2, the electric capacity C5 other end and electric capacity C6 connects
Ground wire.Constant-temperature crystal oscillator Y1 uses chip CO27VS05DE-02-10.000.The purpose of crystal oscillator reference circuit 2 is to produce 10MHz
Signal.
Further, resistance R3, resistance R4, resistance R5, electric capacity C7 and electricity are included referring to Fig. 3, the crystal oscillator power-devided circuit 3
Hold C8, one end of the resistance R3 is connected with constant-temperature crystal oscillator Y1 pin 4, and the other end of the resistance R3 is respectively with resistance R4's
One end is connected with resistance R5 one end, and the other end of the resistance R4 is connected by electric capacity C7 with the first phase-locked loop circuit, described
The resistance R5 other end is connected by electric capacity C8 with the second phase-locked loop circuit.The crystal oscillator power-devided circuit 3 is by resistance, capacitance group
Into constant-temperature crystal oscillator is produced into accurate 10MHz square-wave signals and is supplied to the phase discriminators of two phaselocked loops as reference.
Further, electric capacity is included referring to Fig. 4, the loop filter circuit 15 of the first loop filter circuit 5 and second
C9, electric capacity C10, electric capacity C11, electric capacity C12, electric capacity C13, resistance R6, resistance R7 and resistance R8, one end of the electric capacity C9, electricity
Resistance R6 one end, resistance R7 one end is connected with the first phase discriminator or the second phase discriminator, the other end difference of the resistance R7
It is connected with electric capacity C10 one end and resistance R8 one end, the other end of the resistance R8, electric capacity C11 one end and electric capacity C12
One end is connected with the first voltage controlled oscillator or the second voltage controlled oscillator, the other end of the resistance R6 and electric capacity C13 one end
Connection, the other end, the electric capacity C13 other end, the electric capacity C10 other end, electric capacity the C11 other end and electric capacity of the electric capacity C9
The C12 other end is all connected with ground wire.
Further, inductance is included referring to Fig. 5, the low-pass filter circuit 20 of the first low-pass filter circuit 10 and second
L1, inductance L2, inductance L3, electric capacity C17, electric capacity C14, electric capacity C15 and electric capacity C16, the inductance L1 one end and electric capacity C17
One end is connected with the first radio frequency amplifier 9 or the 3rd radio frequency amplifier 19, the other end of the inductance L1 respectively with electric capacity C14
One end connected with inductance L2 one end, the other end of the inductance L2 respectively with electric capacity C15 one end and inductance L3 one end
Connection, the other end of the inductance L3 and electric capacity C16 one end are connected with bandpass filter 11 or SMA connectors, the electricity
The other end for holding the C17 other end, the electric capacity C14 other end, the electric capacity C15 other end and electric capacity C16 is all connected with ground wire.It is described
The first low-pass filter circuit 10 and the second low-pass filter circuit 20 be to filter out harmonic signal and other interference signals, obtain
Useful signal.
The crystal oscillator reference circuit 2 of the present embodiment produces accurate 10MHz square-wave signals and divides two-way by crystal oscillator power-devided circuit 3
The first phase discriminator 4 of the first phase-locked loop circuit is respectively supplied to as reference signal and the second phase discriminator of the second phase-locked loop circuit
14 (notes：Practical devices are phase-locked loop chips, and its inside is integrated with phase discriminator, also frequency divider（By oscillator feedback signal point
Frequently）Deng phase discriminator will export bias voltage after two signal phase demodulations after chip internal is handled) as reference signal, first
The signal that voltage controlled oscillator 6 exports feeds back to the first phase discriminator 4, feeds back the first voltage controlled oscillator 6 inside the first phase discriminator 4
Phase demodulation is carried out after signal frequency split with reference signal, and exports a bias voltage, exchange is filtered out by the first loop filter circuit 5
Component obtains DC offset voltage, and DC offset voltage controls the first voltage controlled oscillator 6, exports the first voltage controlled oscillator 6 pre-
If 3.000GHz frequencies, predeterminated frequency is single-chip microcomputer writes data so as to frequency by data wire to special phase-locked loop chip
Rate is controlled, and user can change this frequency values by keyboard.The signal of first phase-locked loop circuit output is put by the first radio frequency
After the big amplification of device 9 and the first low-pass filter circuit 10 and the filtering clutter of bandpass filter 11, then by the second radio frequency amplifier 12
Amplification, obtain final 3GHz frequency signals and export what is launched to transmitting antenna 13.Similarly, the second voltage controlled oscillator 16 exports
Feed back to the second phase discriminator 14, the signal frequency split for the second voltage controlled oscillator 16 being fed back inside the second phase discriminator 14 after signal frequency split
Phase demodulation is carried out with reference signal afterwards, and exports a bias voltage, bias voltage obtains surely by the second loop filter circuit 15
Fixed DC offset voltage controls the second voltage controlled oscillator 16, so as to export default 3.002GHz frequencies.Second phaselocked loop electricity
The signal of road output obtains final by the amplification of the 3rd radio frequency amplifier 19 and the filtering clutter of the second low-pass filter circuit 20
3.002GHz frequency signals are exported to receiving circuit, and receiving circuit is connected to by coaxial line, the local oscillation signal as mixing.
（Note：The power-devided circuit that resistive power splitter is made up of resistance, power is divided equally to two-way.）
Fig. 6 gives the first phase-locked loop circuit output signal frequency and the curve of time, it can be seen that the first phaselocked loop electricity
The Lu Suoxiang times are 20us.Fig. 7 is the output spectrum of radio frequency signals measured with Agilent frequency spectrograph, it can be seen that signal is
3.000GHz, power 14.29dBm, remaining is noise signal.Applicability of the present utility model is known by Fig. 7 measured results.
The scope of protection of the utility model includes but is not limited to embodiment of above, and the scope of protection of the utility model is to weigh
Sharp claim is defined, and any replacement being readily apparent that to those skilled in the art that this technology is made, deformation, improvement are each fallen within
The scope of protection of the utility model.
Claims (8)
- A kind of 1. radiating circuit for the measurement of S-band precipitation particles scattering experiment, it is characterised in that：Including DC voltage-stabilizing electricity Road, crystal oscillator reference circuit, the first phase-locked loop circuit, the second phase-locked loop circuit, the first radio frequency amplifier, the first LPF electricity Road, bandpass filter, the second radio frequency amplifier, the 3rd radio frequency amplifier, the second low-pass filter circuit and transmitting antenna；The crystalline substance The reference circuit that shakes is connected with the first phase-locked loop circuit and the second phase-locked loop circuit respectively by crystal oscillator power-devided circuit, first lock Phase loop circuit is connected with the first radio frequency amplifier, and first radio frequency amplifier is connected with the first low-pass filter circuit, and described One low-pass filter circuit is connected with bandpass filter, and the bandpass filter is connected with the second radio frequency amplifier, and described second penetrates Audio amplifier is connected with transmitting antenna, and second phase-locked loop circuit is connected with the 3rd radio frequency amplifier, and the 3rd radio frequency is put Big device is connected with the second low-pass filter circuit, and second low-pass filter circuit is connected with SMA connectors；The DC voltage-stabilizing electricity Put respectively with crystal oscillator reference circuit, the first phase-locked loop circuit, the second phase-locked loop circuit, the first radio frequency amplifier, the second radio frequency on road Big device and the 3rd radio frequency amplifier connection.
- 2. the radiating circuit according to claim 1 for the measurement of S-band precipitation particles scattering experiment, it is characterised in that： First phase-locked loop circuit includes the first phase discriminator, the first loop filter circuit, the first voltage controlled oscillator, first resistor work(point Device and the first attenuator, first phase discriminator are connected with the first loop filter circuit, first loop filter circuit and One voltage controlled oscillator is connected, and first voltage controlled oscillator is connected with first resistor power splitter, the first resistor power splitter point It is not connected with the first attenuator and the first radio frequency amplifier, first attenuator is connected with the first phase discriminator.
- 3. the radiating circuit according to claim 2 for the measurement of S-band precipitation particles scattering experiment, it is characterised in that： Second phase-locked loop circuit includes the second phase discriminator, the second loop filter circuit, the second voltage controlled oscillator, second resistance work(point Device and the second attenuator, second phase discriminator are connected with the second loop filter circuit, second loop filter circuit and Two voltage controlled oscillators are connected, and second voltage controlled oscillator is connected with second resistance power splitter, the second resistance power splitter point It is not connected with the second attenuator and the 3rd radio frequency amplifier, second attenuator is connected with the second phase discriminator.
- 4. the radiating circuit according to claim 1 for the measurement of S-band precipitation particles scattering experiment, it is characterised in that： Also include PCB, the direct current regulation circuit, crystal oscillator reference circuit, the first phase-locked loop circuit, the second phase-locked loop circuit, First radio frequency amplifier, the first low-pass filter circuit, bandpass filter, the second radio frequency amplifier, the 3rd radio frequency amplifier, second Low-pass filter circuit, transmitting antenna and SMA connectors are arranged in PCB, and the PCB is double-sided printing Plate, the size of PCB are 205.3mm*247.1mm, and the sheet material of PCB is FR4 sheet materials, the thickness of slab of PCB For 1mm, the relative dielectric constant of PCB is 4.3.
- 5. the radiating circuit according to claim 1 for the measurement of S-band precipitation particles scattering experiment, it is characterised in that： The crystal oscillator reference circuit includes constant-temperature crystal oscillator Y1, resistance R1, variable resistor R2, electrochemical capacitor C1, electrochemical capacitor C2, electric capacity C3, electric capacity C4, electric capacity C5 and electric capacity C6, the pin 1 of the constant-temperature crystal oscillator Y1 are connected with variable resistor R2 sliding end, it is described can One end connection ground wire and the other end for becoming resistance R2 are connected with resistance R1 one end, the other end, the electrochemical capacitor of the resistance R1 One end of C1 positive pole, electric capacity C3 one end and electric capacity C4 is connected with direct current regulation circuit, negative pole, the electricity of the electrochemical capacitor C1 The other end for holding C3 connects ground wire with the electric capacity C4 other end, and the pin 5 of the constant-temperature crystal oscillator Y1 connects ground wire, and the constant temperature is brilliant Shake Y1 pin 3, electrochemical capacitor C2 positive pole, electric capacity C5 one end and electric capacity C6 one end is connected with direct current regulation circuit, institute State electrochemical capacitor C2 negative pole, the electric capacity C5 other end connects ground wire with the electric capacity C6 other end.
- 6. the radiating circuit according to claim 5 for the measurement of S-band precipitation particles scattering experiment, it is characterised in that： The crystal oscillator power-devided circuit includes resistance R3, resistance R4, resistance R5, electric capacity C7 and electric capacity C8, the resistance R3 one end and perseverance Warm crystal oscillator Y1 pin 4 is connected, and the other end of the resistance R3 is connected with resistance R4 one end and resistance R5 one end respectively, institute The other end for stating resistance R4 is connected by electric capacity C7 with the first phase-locked loop circuit, the other end of the resistance R5 by electric capacity C8 with Second phase-locked loop circuit connects.
- 7. the radiating circuit according to claim 3 for the measurement of S-band precipitation particles scattering experiment, it is characterised in that： First loop filter circuit and the second loop filter circuit include electric capacity C9, electric capacity C10, electric capacity C11, electric capacity C12, electricity Hold C13, resistance R6, resistance R7 and resistance R8, one end of the electric capacity C9, resistance R6 one end, resistance R7 one end are with the One phase discriminator or the connection of the second phase discriminator, the other end of the resistance R7 respectively with electric capacity C10 one end and resistance R8 one end Connection, one end of the other end of the resistance R8, electric capacity C11 one end and electric capacity C12 with the first voltage controlled oscillator or second Voltage controlled oscillator is connected, and the other end of the resistance R6 is connected with electric capacity C13 one end, the other end, the electric capacity of the electric capacity C9 The C13 other end, the electric capacity C10 other end, the electric capacity C11 other end and electric capacity the C12 other end are all connected with ground wire.
- 8. the radiating circuit according to claim 7 for the measurement of S-band precipitation particles scattering experiment, it is characterised in that： First low-pass filter circuit and the second low-pass filter circuit include inductance L1, inductance L2, inductance L3, electric capacity C17, electric capacity C14, electric capacity C15 and electric capacity C16, one end of the inductance L1 and electric capacity C17 one end with the first radio frequency amplifier or the 3rd Radio frequency amplifier is connected, and the other end of the inductance L1 is connected with electric capacity C14 one end and inductance L2 one end respectively, the electricity The sense L2 other end is connected with electric capacity C15 one end and inductance L3 one end respectively, the other end and electric capacity C16 of the inductance L3 One end be connected with bandpass filter or SMA connectors, the other end of the electric capacity C17, electric capacity the C14 other end, electric capacity The C15 other end and the electric capacity C16 other end are all connected with ground wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720918953.5U CN207218677U (en) | 2017-07-27 | 2017-07-27 | Radiating circuit for the measurement of S-band precipitation particles scattering experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720918953.5U CN207218677U (en) | 2017-07-27 | 2017-07-27 | Radiating circuit for the measurement of S-band precipitation particles scattering experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207218677U true CN207218677U (en) | 2018-04-10 |
Family
ID=61814056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720918953.5U Expired - Fee Related CN207218677U (en) | 2017-07-27 | 2017-07-27 | Radiating circuit for the measurement of S-band precipitation particles scattering experiment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207218677U (en) |
-
2017
- 2017-07-27 CN CN201720918953.5U patent/CN207218677U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101662078B (en) | Small shielding body electromagnetic shielding performance testing device, system and method therefor | |
| Huntoon et al. | Synchronization of oscillators | |
| CN105071804B (en) | A kind of Low phase noise broadband microwave local oscillator source circuit and its implementation method | |
| CN109031310A (en) | S-band precipitation particles scatterometry instrument, measuring system and measurement method | |
| CN107329121A (en) | The radiating circuit measured for S-band precipitation particles scattering experiment | |
| CN110350932A (en) | A kind of high-frequency wideband receiver and signal processing method | |
| CN102955175A (en) | Self-adaption signal conditioning and sending device and method of wireless underground tunnel scenograph | |
| CN207218677U (en) | Radiating circuit for the measurement of S-band precipitation particles scattering experiment | |
| CN101178433B (en) | Ultra-wideband quick frequency conversion source | |
| Liu et al. | Preparation and characterizations of active carbon/barium ferrite/polypyrrole composites | |
| CN107085201A (en) | Transceiver Doppler radar front-end module | |
| CN206459717U (en) | A kind of Modulation Continuous Wave Radar water level telemetering device | |
| Zhang et al. | A simple system for measuring antenna radiation patterns in the Wi-Fi band | |
| CN102928887A (en) | Integrated signal receiving device of radio trench scenograph | |
| CN103326718B (en) | A kind of rf chain of rubidium frequency standard | |
| CN109525259B (en) | Frequency modulation transmitting device | |
| CN106771686A (en) | The local oscillator generating means and method of a kind of Noise Factor Analyzer spread spectrum module | |
| CN208689159U (en) | S-band precipitation particles scatterometry instrument and measuring system | |
| CN202679345U (en) | Ku-band ultra-low phase noise frequency source component | |
| CN201536156U (en) | Electromagnetic shielding efficiency test device of small shielding body and radio-frequency antenna and dot frequency radiation source therein | |
| CN204362031U (en) | The fast frequency-hopped local vibration source of L-band | |
| CN209299257U (en) | A kind of 225MHz~630MHz wide-band numerical-control frequency hopping filter | |
| CN206450763U (en) | A kind of single port vector network analyzer | |
| Jiang et al. | Design of low phase noise broadband frequency source based on pll | |
| CN207753701U (en) | A kind of X-band Low phase noise frequency source |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180410 Termination date: 20190727 |