CN206498410U - PIM multiband test devices - Google Patents
PIM multiband test devices Download PDFInfo
- Publication number
- CN206498410U CN206498410U CN201720195676.XU CN201720195676U CN206498410U CN 206498410 U CN206498410 U CN 206498410U CN 201720195676 U CN201720195676 U CN 201720195676U CN 206498410 U CN206498410 U CN 206498410U
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- Prior art keywords
- switch
- signal source
- passive device
- pim
- multibands
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Abstract
The utility model discloses a kind of PIM multibands test device, including：Signal source, with different frequency range and multiple passive devices, controlling switch, switch control box and frequency spectrograph parallel with one another；Wherein, the signal source is in parallel two groups, and two groups of signal sources are sequentially connected in series with the passive device and frequency spectrograph；The controlling switch includes：Being arranged between the signal source and passive device is used to distribute first group of RF switch of signal source transmission path and be arranged between the passive device and the frequency spectrograph to be used for second group of RF switch of control signal transmission path, the switch control box controls cut-offfing for each group RF switch in the controlling switch, and product to be detected is connected to the passive device.The utility model can realize intermodulation testing to the product to be detected of different frequency range, efficiently solve because more than product frequency range, it is necessary to frequent switching test frequency range and caused by time more than, it is necessary to the problem of number of devices is more.
Description
Technical field
The utility model is related to testing field, more particularly to a kind of PIM multibands test device.
Background technology
Passive intermodulation (Passive Inter-Modulation, PIM) is the non-of the various passive devices in emission system
Caused by linear characteristic.In high-power, multichannel system, the non-linear of these passive devices can be produced relative to working frequency
Higher order harmonics, these harmonic waves are mixed with working frequency can produce one group of new frequency, and its final result is exactly to produce in the air
Raw one group of useless frequency spectrum is so as to influence normal communication.Therefore need to carry out intermodulation testing to product, with product test frequency
The increase of section, the product of different frequency range, which needs to change corresponding equipment, to be tested, and causes the cost of test equipment higher, simultaneously
It is cumbersome time-consuming because the frequency range of product test is more, easily there is maloperation, influence testing efficiency.
Utility model content
The utility model provides a kind of PIM multibands test device, is asked with solving above-mentioned technology present in prior art
Topic.
In order to solve the above technical problems, the utility model provides a kind of PIM multibands test device, including：Signal source, tool
There is different frequency range and multiple passive devices, controlling switch, switch control box and frequency spectrograph parallel with one another；Wherein, the letter
Number source is in parallel two groups, and two groups of signal sources are sequentially connected in series with the passive device and frequency spectrograph；The control
Switch includes：Being arranged on is used for first group of RF switch for distributing signal source transmission path between the signal source and passive device
And second group of RF switch between the passive device and the frequency spectrograph for control signal transmission path is arranged on, it is described
Switch control box controls cut-offfing for each group RF switch in the controlling switch, and product to be detected is connected to the passive device.
Preferably, also including multigroup power amplifier, the signal of the signal source is put through the power amplifier
Transmitted after big to the passive device.
Preferably, first group of RF switch includes：It is located at first between the signal source and power amplifier
Switch and second switch, and the 3rd switch being arranged between the power amplifier and the passive device and the 4th are opened
Close.
Preferably, first, second, third, fourth switch is single-pole double-throw switch (SPDT).
Preferably, second group of RF switch includes：Set between the frequency spectrograph and each passive device the 5th,
Six, the 7th switches.
Preferably, the five, the six, the 7th switch is single-pole double-throw switch (SPDT).
Preferably, the switch control box includes：Power module, Automatic level control plate and level driver plate, wherein, it is described
Power module is that the Automatic level control plate and level driver plate provide power supply, and the Automatic level control plate is real by being communicated with host computer
Now to the control of multigroup controlling switch, the level driver plate is arranged between Automatic level control plate and the controlling switch.
Preferably, the power module uses bright latitude power supply.
Compared with prior art, PIM multibands test device disclosed in the utility model, including：Signal source, with difference
Frequency range and multiple passive devices, controlling switch, switch control box and frequency spectrograph parallel with one another；Wherein, the signal source is
In parallel two groups, two groups of signal sources are sequentially connected in series with the passive device and frequency spectrograph；The controlling switch bag
Include：Being arranged on is used for the first group of RF switch and the setting that distribute signal source transmission path between the signal source and passive device
It is used for second group of RF switch of control signal transmission path, the switch control between the passive device and the frequency spectrograph
Box processed controls cut-offfing for each group RF switch in the controlling switch, and product to be detected is connected to the passive device.This practicality
It is new to realize intermodulation testing to the product to be detected of different frequency range, efficiently solve because more than product frequency range, it is necessary to frequently cut
The time changed test frequency range and caused is more, it is necessary to the problem of number of devices is more.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of PIM multiband test devices in the utility model；
Fig. 2 is the control principle drawing of switch control box in the utility model.
Shown in figure：100- signal sources, the signal sources of 110- first, 120- secondary signals source, 200- power amplifiers, 210
The power amplifier of~240- first~the 4th；300- passive devices, 400- frequency spectrographs, 500- switch control boxes, 510- power supply moulds
The switch of block, 520- Automatic level controls plate, 530- level drivers plate, 600- products to be detected, S1~S7- first~the 7th.
Embodiment
To enable above-mentioned purpose of the present utility model, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings to this
The embodiment of utility model is described in detail.It should be noted that, the utility model accompanying drawing is using simplified form
And non-accurately ratio is used, only to convenient, lucidly aid illustration the utility model embodiment purpose.
As depicted in figs. 1 and 2, the utility model provides a kind of PIM multibands test device, including：Signal source 100, work(
Rate amplifier 200, with different frequency range and multiple passive devices 300 parallel with one another, controlling switch, switch control box 500 with
And frequency spectrograph 400.
The signal source 100 includes the first signal source 110 and the secondary signal source 120 of parallel connection, first signal source 110
With after the parallel connection of secondary signal source 120, with the power amplifier 200, passive device 300 and the company of being sequentially connected in series of frequency spectrograph 400
Connect.
The controlling switch includes：Being arranged between the signal source 100 and passive device 300 is used to distribute signal source biography
First group of RF switch in defeated path and be arranged between the passive device 300 and the frequency spectrograph 400 be used for control signal
Second group of RF switch of transmission path.Specifically, first group of RF switch includes：It is located at the signal source 100 and work(
First switch S1 and second switch S2 between rate amplifier 200, and be arranged on the power amplifier 200 with it is described passive
The 3rd switch S3 and the 4th switch S4 between device 300.Second group of RF switch includes：The frequency spectrograph 400 is set
The five, the six, the 7th switch S6, S7, S8 between each passive device 300.Further, the first switch is opened to the 7th
It is single-pole double-throw switch (SPDT) to close S1~S7.
The switch control box 500 controls first switch cut-offfing to the 7th switch S1~S7 in the controlling switch, from
And the intermodulation testing to the product to be detected 600 of different frequency range is realized, product 600 to be detected is connected to the passive device 300.
Specifically, in the present embodiment, the first switch S1 and second switch S2 are mainly the two distribution transmission of signal source 100 roads
Footpath, the 3rd switch S3 and the 4th switch S4 mainly distribute transmission path, the 5th switch for low frequency signal (700Hz and 850Hz)
The signal distribution transmission path that S5, the 6th switch S6 and the 7th switch S7 are mainly to read from frequency spectrograph 400.Switch control
The function of box 500 is mainly control first switch to the 7th switch S1~S7, and then the power of signal source 100 is sent into a certain frequency
On the passive device 300 of section, and by the port of passive device 300 come readings, so, it is linkage to have some switches, such as the
One switch S1, the switch S6 of second switch S2 and the 6th are linkage, and the 3rd switch S3, the 4th switch S4 and the 5th switch S5 are connection
It is dynamic, and the 7th switch S7 prepares to read reflected signal and transmission signal.
Please emphasis reference picture 2, the switch control box 500 includes：Power module 510, Automatic level control plate 520 and level drive
Dynamic plate 530, wherein, the power module 510 uses bright latitude power supply, and input voltage is 220V, and output voltage is 5V and 24V.Its
The 5V voltages of middle output are used to power to Automatic level control plate 520 and level driver plate 530, and 24V voltages are mainly opened to the control
Close power supply；The Automatic level control plate 520 uses USBIO24R control panels, mainly passes through RS232 interfaces and host computer (computer)
Communicate with realizing the control of 5V low and high levels, that is, realize and control is cut-off to controlling switch.The USBIO24R control panels have 3 groups of ends
Mouthful, each 8 pins in port, each pin can realize input and output mode.The utility model is used in its port 0
Pin realizes the control to controlling switch；The level driver plate 530 uses ULN2803 driving plates, because USBIO24R is controlled
The high level driving force of the pin output of making sheet is weaker (typically smaller than 10mA), is not enough to directly drive controlling switch, described
ULN2803 driving plates are mainly used in amplifying electric current, and the driving force of enhancing Automatic level control plate 520 is switched with drive control.Should
ULN2803 driving plates have the input of 8 tunnels, the output of 8 tunnels.Input is connected on the port 0 of USBIO24R control panels, output end connection
To controlling switch.
With reference to Fig. 1 to Fig. 2, below using realized using two signal sources the tests of 3 frequency range PIM (passive intermodulation) as
Example, illustrates the course of work of the present utility model.Wherein, passive device 300 includes tri- frequency ranges of 700Hz, 850Hz and 1900Hz.
Power amplifier 200 includes the first~the 4th power amplifier 210~240.
The small-signal that first signal source 110 and secondary signal source 120 are simultaneously emitted by, passes through first switch S1 and second switch
S2 is transferred on the first power amplifier 210 and the second power amplifier 220, and small-signal is exaggerated, into 1900Hz frequency ranges
In passive device 300, two paths of signals can be sent in product 600 to be detected by the passive device 300, and product 600 to be detected is produced
Raw reflection inter-modulated signal can be by passive device 300, then via the 6th switch S6 and the 7th switch S7 switching, most believes at last
Number feeding frequency spectrograph 400 is measured；
The small-signal that first signal source 110 and secondary signal source 120 are simultaneously emitted by, passes through first switch S1 and second switch
S2 is transferred on the 3rd power amplifier 230 and the 4th power amplifier 240, and small-signal is exaggerated, and passes through the 3rd switch S3
With the 4th switch S4 switching, in the passive device 300 that signal is sent into 700Hz frequency ranges, the passive device 300 can believe two-way
Number it is sent in product 600 to be detected, the reflection inter-modulated signal that product 600 to be detected is produced can be by passive device 300, then passes through
By the 5th switch S5, the 6th switch S6 and the 7th switch S7 switching, most signal feeding frequency spectrograph 400 is measured at last；
The small-signal that first signal source 110 and secondary signal source 120 are simultaneously emitted by, passes through first switch S1 and second switch
S2 is transferred on the 3rd power amplifier 230 and the 4th power amplifier 240, and small-signal is exaggerated, and passes through the 3rd switch S3
With the 4th switch S4 switching, in the passive device 300 that signal is sent into 850Hz frequency ranges, the passive device 300 can believe two-way
Number it is sent in product 600 to be detected, the reflection inter-modulated signal that product 600 to be detected is produced can be by passive device 300, then passes through
By the 5th switch S5, the 6th switch S6 and the 7th switch S7 switching, most signal feeding frequency spectrograph 400 is measured at last；
As described above, by the switching to controlling switch, 700,850 or 1900Hz, tri- frequency ranges can be switched a signal into
On, so as to realize the measurement of the passive intermodulation of three frequency ranges.
In summary, the utility model discloses a kind of PIM multibands test device, including：Signal source 100, with not
With frequency range and multiple passive devices 300 parallel with one another, controlling switch, switch control box 500 and frequency spectrograph 400；Wherein, institute
It is in parallel two groups to state signal source 100, and two groups of signal sources 100 are gone here and there successively with the passive device 300 and frequency spectrograph 400
Connection connection；The controlling switch includes：Being arranged between the signal source 100 and passive device 300 is used to distribute signal source biography
First group of RF switch in defeated path and be arranged between the passive device 300 and the frequency spectrograph 400 be used for control signal
Second group of RF switch of transmission path, the switch control box 500 controls opening for each group RF switch in the controlling switch
Disconnected, product 600 to be detected is connected to the passive device 300.The utility model can be to the product to be detected 600 of different frequency range
Realize intermodulation testing, efficiently solve because more than product frequency range, it is necessary to frequent switching test frequency range and caused by time more than, it is necessary to set
The problem of standby quantity is more.The quantity of signal source 100 and frequency spectrograph 400 can also be saved, the switching time in test process is reduced,
Efficiency is improved, cost is reduced.
Obviously, those skilled in the art can be new without departing from this practicality to the various changes of utility model progress and modification
The spirit and scope of type.So, if these modifications and variations of the present utility model belong to the utility model claim and its
Within the scope of equivalent technologies, then the utility model is also intended to including these changes and modification.
Claims (8)
1. a kind of PIM multibands test device, it is characterised in that including：Signal source, with different frequency range and parallel with one another many
Individual passive device, controlling switch, switch control box and frequency spectrograph；Wherein, the signal source is in parallel two groups, described two groups
Signal source is sequentially connected in series with the passive device and frequency spectrograph；The controlling switch includes：It is arranged on the signal source
It is used to distribute first group of RF switch of signal source transmission path between passive device and is arranged on the passive device and institute
Stating is used for second group of RF switch of control signal transmission path between frequency spectrograph, and the switch control box control control is opened
Central Shanxi Plain each group RF switch cut-offs, and product to be detected is connected to the passive device.
2. PIM multibands test device as claimed in claim 1, it is characterised in that described also including multigroup power amplifier
The signal of signal source is transmitted after being amplified through the power amplifier to the passive device.
3. PIM multibands test device as claimed in claim 2, it is characterised in that first group of RF switch includes：If
First switch and second switch between the signal source and power amplifier, and it is arranged on the power amplifier and institute
State the 3rd switch and the 4th switch between passive device.
4. PIM multibands test device as claimed in claim 3, it is characterised in that described first, second, third, fourth opens
Pass is single-pole double-throw switch (SPDT).
5. PIM multibands test device as claimed in claim 1, it is characterised in that second group of RF switch includes：If
Put the five, the six, the 7th switches between the frequency spectrograph and each passive device.
6. PIM multibands test device as claimed in claim 5, it is characterised in that the five, the six, the 7th switch is equal
For single-pole double-throw switch (SPDT).
7. PIM multibands test device as claimed in claim 1, it is characterised in that the switch control box includes：Power supply mould
Block, Automatic level control plate and level driver plate, wherein, the power module is that the Automatic level control plate and level driver plate provide electricity
Source, the Automatic level control plate realizes the control to multigroup controlling switch by being communicated with host computer, and the level driver plate is set
Between Automatic level control plate and the controlling switch.
8. PIM multibands test device as claimed in claim 7, it is characterised in that the power module uses bright latitude power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720195676.XU CN206498410U (en) | 2017-03-02 | 2017-03-02 | PIM multiband test devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720195676.XU CN206498410U (en) | 2017-03-02 | 2017-03-02 | PIM multiband test devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206498410U true CN206498410U (en) | 2017-09-15 |
Family
ID=59805983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720195676.XU Expired - Fee Related CN206498410U (en) | 2017-03-02 | 2017-03-02 | PIM multiband test devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206498410U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111162814A (en) * | 2018-11-07 | 2020-05-15 | 比亚迪股份有限公司 | Impedance adjuster, radio frequency circuit and electronic equipment |
| CN113484735A (en) * | 2021-07-30 | 2021-10-08 | 锐石创芯（深圳）科技有限公司 | Chip test gating module and chip test system |
-
2017
- 2017-03-02 CN CN201720195676.XU patent/CN206498410U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111162814A (en) * | 2018-11-07 | 2020-05-15 | 比亚迪股份有限公司 | Impedance adjuster, radio frequency circuit and electronic equipment |
| CN111162814B (en) * | 2018-11-07 | 2021-01-19 | 比亚迪股份有限公司 | Impedance adjuster, radio frequency circuit and electronic equipment |
| CN113484735A (en) * | 2021-07-30 | 2021-10-08 | 锐石创芯（深圳）科技有限公司 | Chip test gating module and chip test system |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170915 Termination date: 20210302 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |