CN109818652A - A kind of micro high-power microwave link parameter conditioning instrument - Google Patents
A kind of micro high-power microwave link parameter conditioning instrument Download PDFInfo
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- CN109818652A CN109818652A CN201811618841.3A CN201811618841A CN109818652A CN 109818652 A CN109818652 A CN 109818652A CN 201811618841 A CN201811618841 A CN 201811618841A CN 109818652 A CN109818652 A CN 109818652A
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Abstract
The present invention provides a kind of micro high-power microwave link parameters to improve instrument, including electromagnetic shielding case, two or more microwave devices, temperature sampler, control circuit, coaxial cable, rf adapter and LCD MODULE；Each microwave device, coaxial cable and rf adapter connect and compose a microwave link, and microwave device, temperature sampler and liquid crystal display are controlled communication by control circuit, issue control command by control circuit, control corresponding microwave link work；The information that microwave device work state information and temperature in chassis collector acquire is passed to LCD MODULE by control circuit, and by the liquid crystal display real-time display on front panel；Microwave device is integrated into electromagnetic shielding case front panel by coaxial cable, and front panel is equipped with the rf adapter connected for microwave device.Integrated level of the present invention is high, convenient for the integrated application of integrated automated test system, can increase substantially testing efficiency.
Description
Technical field
The present invention relates to electronic information equipment comprehensive automated test technical fields, and in particular to a kind of micro high-power microwave
Link parameter improves instrument.
Background technique
To ensure that the test of the microwave signals performance tests such as Microwave radio frequency system, component in tested objective system needs
It asks, in conjunction with instrument resources such as system platform signal source, frequency spectrograph, power meter and all kinds of simulators, needs mating microwave link conditioning
Instrument come realize the resource expansion, high-power signal in radio-frequency measurement channel decaying conditioning, microwave power matching etc. functions.
Microwave current tests the matched HIGH-POWERED MICROWAVES attachment of link, such as attenuator, load, coupler, and volume is larger,
All collection is dispersed on the ground of test site, and performance maintenance is poor, and connects the microwave cable of microwave attachment and system testing instrument
Length is very long, and channel Insertion Loss is very big, is not implemented and is calibrated and compensated automatically, and RF switch, amplifier, programmable attenuator etc. need list
Solely control, thus the problems such as causing test macro complexity in disorder, inconvenient, testing efficiency is low.
Summary of the invention
In view of this, the present invention provides a kind of micro high-power microwave link parameters to improve instrument, integrated level is high, is convenient for
The integrated application of integrated automated test system, can increase substantially testing efficiency.
The technical solution adopted by the present invention is as follows:
A kind of micro high-power microwave link parameter improves instrument, the parameter conditioning instrument include electromagnetic shielding case,
Two or more microwave devices, temperature sampler, control circuit, coaxial cable, rf adapter, power module and liquid crystal display mode
Block；
Power module is microwave device, control circuit and LCD MODULE power supply；Each microwave device, coaxial cable
And rf adapter connects and composes a microwave link, microwave device, temperature sampler and liquid crystal display by control circuit Lai
Control communication, issues control command by control circuit, controls corresponding microwave link work；Control circuit is by microwave device work
The information for making status information and the acquisition of temperature in chassis collector passes to LCD MODULE, and by the liquid crystal on front panel
Display screen real-time display；
Two or more microwave devices are integrated into electromagnetic shielding case front panel by coaxial cable, and front panel is equipped with and supplies
The rf adapter of microwave device connection；Electromagnetic sealing is arranged at the electromagnetic shielding case gap to pad；Electromagnetic shielding case
Equipped with direct through type air flue, front panel and two side panels are equipped with ventilation opening, and fan exhausting is arranged in rear panel；The electromagnetic shielding
Power switch is additionally provided on cabinet.
Further, the microwave device includes microwave switch, fixed attenuator, programmable attenuator, coupler, detection
Device, load, circulator and amplifier；
Tail portion, proof load and attenuator is arranged in electromagnetic shielding case in load, fixed attenuator and programmable attenuator
Fin channels are consistent with electromagnetic shielding case air duct；Microwave switch, coupler, circulator are arranged in electromagnetic shielding case
Front, wave detector, amplifier are arranged in electromagnetic shielding case remaining space；
Power module is microwave switch, programmable attenuator and amplifier power supply, fixed attenuator, load, coupler and inspection
Wave device is passive device, is not necessarily to powered operation.
Further, the front panel provides the rf adapter port of externally test connection, the rf adapter end
Mouth is all made of the circle standby signal disengaging direction with disengaging arrow, and according to each microwave device working frequency range and power capacity
Warning indicators are arranged in port corresponding position in design requirement；
The rf adapter port is divided into five port areas, is respectively: circulator port area, coaxial coupler end
Mouth region, coaxial attenuator ports zone, amplifier/wave detector/load end mouth region and microwave switch ports zone；The microwave switch end
Mouth region includes four groups of SP6T microwave switch ports and two groups of SPDT microwave switch ports, and four groups of SP6T microwave switches port is adopted
Add a center com port distribution form with six port circle arrays.
Further, the power switch uses panel biswitch button, is located at rear panel and front panel；
Rear panel is " 0/1 " button, and electromagnetic shielding case is not powered when being located at " 0 ", and electromagnetic shielding case supplies when being located at " 1 "
Electric-opening；Front panel is switch button, micro- when " 0/1 " button of rear panel is located at the switch button unlatching of " 1 " and front panel
Wave device is in normal power-up condition；After the switch button of front panel is closed, microwave device is powered off, at this time " the 0/ of rear panel
1 " button is located at " 0 " and completes power operation.
Further, the power module takes intelligent control management, provides power supply electricity for the microwave device of assigned work
Pressure, control process are as follows: external host computer issues control instruction to control circuit, and control circuit exports TTL signal and controls power supply mould
Block is that the microwave device of assigned work is powered.
Further, the coaxial cable includes semi-rigid RF cable and flexible radio frequency cable.
Further, the complete machine microwave link parameter regulation means are as follows:
Vector network analyzer test interface parameter and S parameter test window are arranged according to debugged microwave link first,
After the completion of vector calibration, it is connected to debugged microwave link, the microwave property index of debugged microwave link microwave device is carried out
Test, if performance indicator is qualified, coaxial cable is without adjustment；It is that semi-rigid is penetrated according to coaxial cable if performance indicator is unqualified
Frequency cable or flexible radio frequency cable redesign respectively；If semi-rigid RF cable, saves arrow net test result and be loaded into three
It ties up in electromagnetic simulation software, carries out joint Electromagnetic Simulation in conjunction with semi-rigid RF cable structure, semi-rigid is optimized according to simulation result and is penetrated
Frequency cable structure parameter, until debugged microwave link meets microwave property index request；If flexible radio frequency cable, then directly
Cascade microwave device and panel adapter are surveyed, unqualified, make line again, until debugged microwave link meets microwave
Performance indicator requirement.
The utility model has the advantages that
1, the present invention is internally integrated a variety of microwave attachmentes, compares traditional approach, integrated level is high and realizes automation control, just
In the integrated application of integrated automated test system, testing efficiency can be increased substantially.Secondly, by the present invention with signal source, frequency spectrograph,
When the instrumentation systems such as vector network analyzer are used in combination, every test radio frequency can be saved by executing autotest program
The frequency point in channel-Insertion Loss information realizes radio-frequency channel compensation for calibrating errors by testing load data next time；Furthermore instrument internal is set
Microwave switch is set, it can be achieved that switching between the independent microwave link of multichannel, convenient for the extension of microwave link.
2, the present invention is integrated with a variety of microwave devices such as attenuator, coupler, wave detector, load, and a variety of function may be implemented
Energy: the fixation of radio-frequency signal output power or stepped attenuation conditioning in test may be implemented in attenuator, improves driving source and bears
Power match function between load, while can realize the power attenuation of 1dB~100dB power bracket 1dB stepping；Measured piece is exported
Prevention at radio-frequency port provides 250W high power load, and in the measurement of high power amplifier or transmitter, load can be used to replace
Antenna all absorbs carrier frequency power, reduces radiation effect；It, can be to reception by coupler if measurand is receiver
Machine injects a monkey chatter signal, then anti-interference come test receiver by connecing comprehensive tester at the straight-through end of coupler
Performance；If measurand is transmitter, tester is connect by coupler or frequency spectrograph can be used for sample of signal and monitoring；It puts
When big device intermodulation testing, coupler can be used for the synthesis of two-way power signal, the power source as intermodulation measurement；Wave detector is used
In detecting former modulated signal from high-frequency am signal, modulated signal is analyzed；
Secondly, rational deployment of the microwave device in cabinet, machine is reduced in the case where meeting cooling requirements as far as possible
Case volume, while saving length of cable.
3, the present invention requires the rf adapter port on front panel being divided into five according to microwave device type and quantity
A port areas, port is clearly bright and clear, user-friendly.
4, the present invention uses two kinds of cables of half steel RF cable and flexible radio frequency cable, for the not high device of power requirement
Using half steel RF cable, and half steel RF cable antidetonation, stability are good；For power requirement height, more structure constraints are bent
Device is targetedly arranged using the lower flexible radio frequency cable of stress, copes with complicated use environment.
5, complete machine microwave link microwave parameters adjustment method of the present invention can adjust half steel coaxial line by joint Electromagnetic Simulation
The structural parameters of cable guarantee the performance parameter index of microwave link, can satisfy multi-parameter, the requirement of high performance microwave system.
6, power supply biswitch button control of the present invention, prevents maloperation, highly-safe.
7, power module of the present invention uses intelligent control management, and specified required microwave device works, and prevents power from putting
The devices such as big device are constantly in power supply state, highly-safe.
Detailed description of the invention
Fig. 1 is the principle of the present invention figure；
Fig. 2 is that the present invention is electromagnetically shielded miniature case front panel layout；
Fig. 3 is complete machine microwave link microwave parameters adjustment method of the present invention；
Fig. 4 is the functional block diagram of master board of the present invention；
Fig. 5 is the schematic illustration of power module of the present invention.
Wherein, 1- product LOGO, model regions module, 2- liquid crystal display area module, 3- microwave function regions module, 4-
Power switch regions module, 5- vent region module.
Specific embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
Present embodiments provide a kind of micro high-power microwave link parameter conditioning instrument, including four groups of SP6T (hilted broadswords six
Throw) it is microwave switch, two groups of SPDT (single-pole double throw) microwave switches, fixed attenuator, programmable attenuator, coupler, wave detector, same
Axle load, circulator, amplifier, temperature sampler, control circuit, LCD MODULE, rf adapter, power module and electricity
Magnetic screen cabinet.Fixed attenuator, programmable attenuator, coupler, wave detector, coaxial load, circulator and amplifier are microwave
Device.
As shown in Figure 1, SP6T microwave switch, SPDT microwave switch, temperature sampler, programmable attenuator and liquid crystal display
Module is controlled communication by control circuit, and microwave switch switching channel number is arranged by external host computer and programmable attenuator is decayed
Amount, then by lan network port in slave computer downlink switching control order and programmable attenuator attenuation communication instruction, from
And realize the selection of different microwave links and the setting of programmable attenuator differential declines amount；Control circuit is by microwave device simultaneously
Work state information and LCD MODULE is passed to the collected operating temperature of temperature in chassis collector, by front panel
Liquid crystal display real-time display.
Power module is microwave switch, programmable attenuator and amplifier power supply, fixed attenuator, load, coupler and inspection
Wave device is passive device, is not necessarily to powered operation.
Miniature cabinet is electromagnetically shielded using standard 5U structure, cabinet depth is 700mm, and electromagnetism is added at entire cabinet gap
Sealing gasket keeps the conducting continuity at gap, avoids electromagnetic-wave leakage.Duct design be through type, front side and two sides into
Correspondingly ventilation opening is arranged in wind, rear side exhausting on front panel and two side panels, fan exhausting, ventilation opening face is arranged in rear panel
Product is sufficient, and vent design takes into account heat dissipation and EMC Requirements.Fan type selecting is taken into account heat dissipation and is wanted with Human-computer Interactive Design
Seek such as noise, by the way of three axial flow blower parallel connection air blast, outer dimension be 120mm × 120mm × 38mm, complete machine by
Three fan radiatings, are controlled using PWM.Fan Selection is 120 blowers: 9G1212P1G091 (SAN ACE).The most strong wind of blower
Measure 136CFM, maximum wind pressure 135Pa.The air quantity 105CFM of each blower operating point, wind pressure 47Pa.
As shown in Fig. 2, electromagnetic shielding case front panel includes five functional modules: 1. product LOGO, model regions module
1；2. liquid crystal display area module 2；3. microwave function regions module 3；4. power switch regions module 4；5. vent region mould
Block 5.
Wherein, 1. product LOGO, LOGO, model identification be arranged using laser carving method in model regions module 1；
2. liquid crystal display area module 2 installs liquid crystal display；
3. microwave function regions module 3 is equipped with the rf adapter connected for microwave device, rf adapter offer pair
The port of outer connection is divided into five port areas, is respectively as follows: circulator area, coaxial coupler area, coaxial attenuator area and puts
Big device/wave detector/load region and microwave switch area, circulator are connect by coaxial cable with the rf adapter in circulator area,
Coaxial coupler connect by coaxial cable with the rf adapter in coaxial coupler area, coaxial attenuator pass through coaxial cable and
The rf adapter in coaxial attenuator area connects, amplifier, wave detector and load by coaxial cable and amplifier/wave detector/
The rf adapter of load region connects, and rf adapter port is all made of the small circle standby signal disengaging side with disengaging arrow
To avoiding maloperation；SPDT microwave switch is integrated into microwave switch port by coaxial cable；SP6T microwave switch directly docks
Microwave switch port, and four groups of SP6T microwave switches add center com port point using six port circle arrays to external port
Cloth form；
According to design requirements such as each microwave device working frequency range and power capacities, plate corresponding position is made warning and is mentioned in front
Show, prevents user misoperation.
4. power switch is arranged in power switch regions module 4.
This parameter improves the 220V/50Hz power supply power supply that instrument passes through cabinet rear panel.Power switch is opened using panel is double
Button is closed, rear panel and front panel are located at, rear panel is " 0/1 " button, and electromagnetic shielding case is not powered when being located at " 0 ",
Electromagnetic shielding case is for electric-opening when positioned at " 1 "；Front panel is switch button, when " 0/1 " button of rear panel is positioned at " 1 " and preceding
When the switch button of panel is opened, microwave device is in normal power-up condition；After the switch button of front panel is closed, microwave device
It powers off, " 0/1 " button of rear panel is located at " 0 " completion power operation at this time.
5. ventilation opening is arranged in vent region module 5.
Consider that the cooling requirements of high power device are needed close to subsequent air inlet duct, so load, fixed attenuator and journey
It controls attenuator and tail portion, proof load and attenuator fin channels and electromagnetic shielding case air duct is set in electromagnetic shielding case
It is consistent；The passive devices such as coupler, circulator are more demanding to Insertion Loss and standing wave, then put in cabinet front design structure part
It puts, saves space and length of cable；Wave detector, amplifier are arranged in electromagnetic shielding case remaining space.
Coaxial radio frequency cable uses two kinds of cables of half steel RF cable and flexible radio frequency cable, the not high device of power requirement
The device of more structure constraints is bent, using the lower flexible radio frequency line of stress to power requirement height using half steel RF cable
Cable.After microwave device layout and coaxial radio-frequency cable install, since the index requests such as Insertion Loss, standing-wave ratio are very high, need collecting
Reach manufacture claim by replacing cable repeatedly in test.
Each microwave device, coaxial cable and rf adapter connect and compose a microwave link, microwave link it is micro-
Wave parameter is codetermined by microwave device, coaxial cable, the microwave property of rf adapter three and its matching cascade system, can
To adjust the structural parameters of coaxial cable by test microwave link, so as to improve whole link microwave property parameter, such as Fig. 3
Shown, the structural parameters method of adjustment of coaxial cable is as follows:
First according to be debugged microwave link setting vector network analyzer test interface parameter (including test frequency range, survey
Pilot number, output power and IF BW etc.) and S parameter (including S11-SWR, S21-SWR and S21-LOG MAG etc.) test window,
After the completion of vector calibration, debugged microwave link input, output port are connected, after microwave link conducting, to debugged microwave
The performance indicator of link microwave device is tested, if microwave property qualified, coaxial cable is without adjustment；If performance indicator
It is unqualified, then it is that half steel RF cable or flexible radio frequency cable redesign respectively according to coaxial cable；If half steel radio frequency line
Cable saves arrow net test result XX.scv file and is loaded into 3 D electromagnetic simulation software, in conjunction with half steel RF cable structure
Joint Electromagnetic Simulation is carried out, half steel RF cable structural parameters are optimized according to simulation result, until meeting microwave property index；If
It is flexible radio frequency cable, then directly cascade microwave device actual measurement, unqualified, line is made again, until meeting microwave property index.
As shown in figure 4, master board mainly includes main process task ARM and peripheral circuit, control circuit module, power supply and voltage
Monitoring module, each connector and port module, the present embodiment use a microprocessor TM4C1294NCPDTI3 of TI, place
Reason device provides outside port abundant and can communicate with PC, thus by flexible control application.In addition there is I/O control terminal abundant
Mouth can carry out state switching to active device in case by control circuit.Screen display function then carries out human oriented design, side
Just the working condition of each device is observed.Port module then not only provides front panel port abundant, further includes and other equipment
The 100M network interface and USB for doing communication control flexibly use.
As shown in figure 5, power module includes EMI filter circuit, current rectifying and wave filtering circuit, input protection circuit, DC/DC conversion
Circuit, output filter circuit and control circuit.
A) EMI filter circuit: being mainly used to be filtered alternating current 220V AC 50Hz input voltage, inhibits conduction
And radiation interference；On the other hand the noise for inhibiting power supply itself to generate meets wanting for Electro Magnetic Compatibility not toward power supply external radiation
It asks；
B) current rectifying and wave filtering circuit: including rectification circuit and filter circuit, the effect of rectification circuit is to select suitable rectification
Device rectifies the alternating current of input.The present embodiment selects single-phase rectification bridge to rectify the 220VAC of input, exports
300V DC high voltage；Filter circuit is filtered to direct current 300V high voltage unstable after rectification, and a stabilization is obtained
Filtered voltage, be supplied to DC/DC converter use；
C) input protection circuit: input protection circuit includes input soft-start circuit and input over under-voltage protection circuit.It is defeated
Enter soft-start circuit to be mainly used to effectively inhibit inrush current；Input over under-voltage protection circuit is monitored power supply, defeated
Enter voltage.When the overtension that is inputted after rectification circuit or it is too low when, close power supply output, power supply and rear end electricity consumption set
It is standby to be protected；
D) current rectifying and wave filtering circuit output 300V DC high voltage DC/DC conversion circuit: is generated into institute by DC/DC converter
+ 12V/8A ,+28V/2A ,+15V/2A and the+5V_SB/2A needed the stable DC output voltage in totally four roads, while utilizing DC/
Output overvoltage, overcurrent, the short-circuit protection function of DC converter itself, protect power supply；
E) output filter circuit: being filtered four road low-voltage dc voltages of output, reduce output voltage ripple and
Noise jamming meets the requirement of output ripple index；
F) control circuit: power supply+12V/8A ,+28V/2A ,+15V/2A on-off are controlled by TTL signal (3.3V): working as TTL
When signal is high level (2V~4V), the conducting of antilogical optocoupler, the DC/DC converter of+12V/8A ,+28V/2A ,+15V/2A
Control pin PC is hanging, and power supply+12V/8A ,+28V/2A ,+15V/2A have output；When TTL signal be low level (0~0.8V) or
When hanging, the cut-off of antilogical optocoupler ,+12V/8A ,+28V/2A ,+15V/2A the control pin PC of DC/DC converter be pulled low,
Power supply+12V/8A ,+28V/2A ,+15V/2A are without output.
Power module takes intelligent control management, and specified required microwave device works, control process are as follows: external upper
Machine issues control instruction to control circuit, and output TTL signal control power module is microwave device confession after control circuit response
Electricity prevents the devices such as power amplifier to be constantly in power supply state, highly-safe.Cabinet tail portion fan is three DC12V power supplies
Fan is transformed into 12V by the supply voltage of 220V and is powered to it, independently separates work with remaining microwave device module.
After the completion of aforementioned cabinet power-up work, fan is started to work, and after cabinet power-off, fan stops working.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (7)
1. a kind of micro high-power microwave link parameter improves instrument, which is characterized in that the parameter conditioning instrument includes electromagnetism
Shielding case, two or more microwave devices, temperature sampler, control circuit, coaxial cable, rf adapter, power module and
LCD MODULE；
Power module is microwave device, control circuit and LCD MODULE power supply；It each microwave device, coaxial cable and penetrates
Frequency adapter connects and composes a microwave link, and microwave device, temperature sampler and liquid crystal display are controlled by control circuit
Communication, issues control command by control circuit, controls corresponding microwave link work；Control circuit works microwave device shape
State information and the information of temperature in chassis collector acquisition pass to LCD MODULE, and by the liquid crystal display on front panel
Real-time display；
Two or more microwave devices are integrated into electromagnetic shielding case front panel by coaxial cable, and front panel is equipped with for microwave
The rf adapter of device connection；Electromagnetic sealing is arranged at the electromagnetic shielding case gap to pad；Electromagnetic shielding case is equipped with
Direct through type air flue, front panel and two side panels are equipped with ventilation opening, and fan exhausting is arranged in rear panel；The electromagnetic shielding case
On be additionally provided with power switch.
2. micro high-power microwave link parameter as described in claim 1 improves instrument, which is characterized in that the microwave device
Including microwave switch, fixed attenuator, programmable attenuator, coupler, wave detector, load, circulator and amplifier；
Tail portion, proof load and attenuator heat dissipation is arranged in electromagnetic shielding case in load, fixed attenuator and programmable attenuator
Piece channel is consistent with electromagnetic shielding case air duct；Microwave switch, coupler, circulator are arranged before electromagnetic shielding case
Portion, wave detector, amplifier are arranged in electromagnetic shielding case remaining space；
Power module is microwave switch, programmable attenuator and amplifier power supply, fixed attenuator, load, coupler and wave detector
For passive device, it is not necessarily to powered operation.
3. micro high-power microwave link parameter as claimed in claim 2 improves instrument, which is characterized in that the front panel mentions
For externally testing the rf adapter port of connection, the rf adapter port is all made of the circle prompt with disengaging arrow
Signal passes in and out direction, and according to each microwave device working frequency range and power capacity design requirement, is arranged in port corresponding position and warns
Show prompt；
The rf adapter port is divided into five port areas, is respectively: circulator port area, coaxial coupler port
Area, coaxial attenuator ports zone, amplifier/wave detector/load end mouth region and microwave switch ports zone；The microwave switch port
Area includes four groups of SP6T microwave switch ports and two groups of SPDT microwave switch ports, and four groups of SP6T microwave switch ports use
Six port circle arrays add a center com port distribution form.
4. micro high-power microwave link parameter as described in claim 1 improves instrument, which is characterized in that the power switch
Using panel biswitch button, it is located at rear panel and front panel；
Rear panel is " 0/1 " button, and electromagnetic shielding case is not powered when being located at " 0 ", and electromagnetic shielding case is for establishing by cable when being located at " 1 "
It opens；Front panel is switch button, when " 0/1 " button of rear panel is located at the switch button unlatching of " 1 " and front panel, microwave device
Part is in normal power-up condition；After the switch button of front panel is closed, microwave device is powered off, and " 0/1 " of rear panel is pressed at this time
Button is located at " 0 " and completes power operation.
5. micro high-power microwave link parameter as described in claim 1 improves instrument, which is characterized in that the power module
Intelligent control management is taken, provides supply voltage, control process for the microwave device of assigned work are as follows: external host computer issues control
To control circuit, control circuit exports the microwave device that TTL signal control power module is assigned work and powers for system instruction.
6. micro high-power microwave link parameter as described in claim 1 improves instrument, which is characterized in that the coaxial cable
Including semi-rigid RF cable and flexible radio frequency cable.
7. micro high-power microwave link parameter as claimed in claim 6 improves instrument, which is characterized in that the complete machine microwave
Link parameter method of adjustment is as follows:
First according to debugged microwave link setting vector network analyzer test interface parameter and S parameter test window, vector
After the completion of calibration, it is connected to debugged microwave link, the microwave property index of debugged microwave link microwave device is tested,
If performance indicator is qualified, coaxial cable is without adjustment；It is semi-rigid RF cable according to coaxial cable if performance indicator is unqualified
Or flexible radio frequency cable redesigns respectively；If semi-rigid RF cable, saves arrow net test result and be loaded into 3 D electromagnetic
In simulation software, joint Electromagnetic Simulation is carried out in conjunction with semi-rigid RF cable structure, semi-rigid RF cable is optimized according to simulation result
Structural parameters, until debugged microwave link meets microwave property index request；If flexible radio frequency cable, then directly cascade micro-
Wave device and panel adapter are surveyed, unqualified, make line again, until debugged microwave link meets microwave property and refers to
Mark requires.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112841842A (en) * | 2021-02-24 | 2021-05-28 | 河南民生特种装备有限公司 | Electromagnetic shielding method and assembly for hair drier and hair drier |
| CN113504425A (en) * | 2021-09-08 | 2021-10-15 | 上海豪承信息技术有限公司 | System, method and device for testing coaxial cable assembly and storage medium thereof |
| CN114698219A (en) * | 2020-12-25 | 2022-07-01 | 上海光链电子科技有限公司 | Ionization source device for hydrogen atom exciter and hydrogen atom exciter |
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