CN207528844U - A kind of microwave camera bellows space attenuation calibrating installation - Google Patents
A kind of microwave camera bellows space attenuation calibrating installation Download PDFInfo
- Publication number
- CN207528844U CN207528844U CN201721746329.8U CN201721746329U CN207528844U CN 207528844 U CN207528844 U CN 207528844U CN 201721746329 U CN201721746329 U CN 201721746329U CN 207528844 U CN207528844 U CN 207528844U
- Authority
- CN
- China
- Prior art keywords
- microwave
- camera bellows
- face
- signal
- space attenuation
- 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.)
- Active
Links
Landscapes
- Studio Devices (AREA)
Abstract
The utility model discloses a kind of microwave camera bellows space attenuation calibrating installations,There is signal input part face on microwave camera bellows,Signal output end face and space attenuation area,Transmitting radiating guide is equipped at the inside axle center in signal input part face,Transmitting radiating guide is connect by being arranged on the microwave input cable on the outside of signal input part face with microwave signal generator,Opening is provided at the axle center in signal output end face,Standard gain antenna is extended to by the opening inside microwave camera bellows,And the axial line of standard gain antenna is overlapped with the center line in space attenuation area,The reception end face of standard gain antenna is parallel with camera bellows output end face,The output terminal of standard gain antenna is connected by the input terminal of microwave output cord and measuring receiver,The utility model can solve the usage time increase with microwave camera bellows,The performance of microwave camera bellows necessarily changes and its space attenuation parameter can not know specific variable quantity,The problems such as so as to make a big impact to test result.
Description
Technical field
The utility model is related to a kind of microwave camera bellows space attenuation calibrating installations, belong to microwave camera bellows calibration field.
Background technology
Microwave camera bellows refers to by certain geometric modeling, in operating frequency range, by the microwave absorption material of superior performance
Material is laid with the free space simulation case of inner wall.Microwave camera bellows is widely used in the aircraft such as aircraft, rocket, guided missile, spaceship
Radio navigation device experiment, antenna parameter test and electromagnetic compatibility Journal of Sex Research.Compared with microwave dark room, advantage is machine
It is dynamic flexible, it is cheap, harm of the microwave to health can be avoided, it can be with rapid deployment and for on-the-spot test.Microwave
Camera bellows type is more, usually there is rectangle, cylinder, pyramid type etc..
To ensure that the parameter testings processes such as certain model target seeker sensitivity are not interfered by external electromagnetic, when test, need to be placed on
It is carried out in microwave camera bellows.According to target seeker test philosophy, the parameter testings such as target seeker reception antenna sensitivity need microwave camera bellows
Space attenuation value be modified.At present, the space attenuation parameter value used during the test, being should by user's foundation
The parameters such as shape, size dimension, absorbing material performance, the working frequency of microwave camera bellows are calculated by theoretical simulation, but by
In these parameters be all theoretical value or single component parameter, while error caused by installation process can not know, and with micro-
Inevitably factors such as various abrasions, the performance degradation of absorbing material during the increase and use of wave camera bellows usage time,
Its space attenuation parameter value certainly will change, so by the use of design and simulation calculated value as correction value to actual test result certainty
Relatively large deviation is caused, therefore the space attenuation parameter of microwave camera bellows need to be calibrated, but there is presently no relevant calibration cartridges
It puts and calibration method.
Utility model content
The technical problems to be solved in the utility model is：A kind of microwave camera bellows space attenuation calibrating installation is provided, to solve
Increase with the usage time of microwave camera bellows, the performance of microwave camera bellows necessarily changes and its space attenuation parameter can not know
Specific variable quantity, thus the problems such as making a big impact to test result.
The technical solution of the utility model is：A kind of microwave camera bellows space attenuation calibrating installation occurs including microwave signal
Device, measuring receiver, standard gain antenna and case material are the microwave camera bellows of metal, have on microwave camera bellows and symmetrically set
The both ends of the surface put and be mutually parallel, one end be signal input part face, the other end be signal output end face, signal input part face with
There is space attenuation area, internal face is coated with absorbing material floor in space attenuation area, is inputted in signal between signal output end face
Transmitting radiating guide is equipped at the inside axle center of end face, transmitting radiating guide passes through the microwave that is arranged on the outside of signal input part face
Input cable is connect with microwave signal generator, and opening is provided at the axle center in signal output end face, and standard gain antenna leads to
It crosses the opening to extend to inside microwave camera bellows, and the axial line of standard gain antenna is overlapped with the center line in space attenuation area, mark
The reception end face of quasi- gain antenna is parallel with camera bellows output end face, the output terminal of standard gain antenna by microwave output cord with
The input terminal connection of measuring receiver.
The standard gain antenna is tubaeform, and working frequency meets 8GHz~12GHz, gain >=20dB.
The output signal of the microwave signal generator is analog signal, and frequency meets 8GHz~12GHz, output power >=
0dBm。
The measuring receiver measurement frequency range meets 8GHz~12GHz, dynamic range >=90dB.
The standard gain antenna is mounted on adjustable stent.
The microwave camera bellows is rectangle, cylinder or pyramid.
The beneficial effects of the utility model：This calibrating installation is simple in structure, easy to operate, sets up convenient and efficient, stability
Height, uncertainty of measurement is small, and measurement result is coincide with calculated value.Using general microwave signal generator and survey during calibration
Amount receiver can set up realization, can effectively save hardware cost.This calibrating installation simulates actually making for microwave camera bellows completely
With state, accurately and reliably, consistency is good for test data, can solve microwave camera bellows because of usage time increase, abrasion, absorbing material
The factors such as performance degradation caused by space attenuation parameter value variation, the problem of so as to make a big impact to test result.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the diagrammatic cross-section of the utility model；
In figure, 1, microwave camera bellows, 2, microwave signal generator, 3, measuring receiver, 4, microwave input cable, 5, transmitted wave
Lead antenna, 6, standard gain antenna, 7, stent, 8, microwave output cord, 9, to set a distance, 10, space attenuation area.
Specific embodiment
Below in conjunction with the accompanying drawings and utility model is described further in specific embodiment：
As depicted in figs. 1 and 2, a kind of microwave camera bellows space attenuation calibrating installation of the present embodiment occurs including microwave signal
Device 2, measuring receiver 3, standard gain antenna 6, the housing of microwave camera bellows 1 are made of metal material, had on microwave camera bellows 1
The both ends of the surface for being symmetrical arranged and being mutually parallel, one end are signal input part face, and the other end is signal output end face, and signal inputs
There is space attenuation area 10 between end face and signal output end face, in space attenuation area, 10 internal face is coated with absorbing material floor,
Transmitting radiating guide 5 is installed at the inside axle center in signal input part face, transmitting radiating guide 5 is with being arranged on signal input part
Microwave input cable 4 on the outside of face connects, and the other end of microwave input cable 4 is connect with microwave signal generator 2, defeated in signal
Go out at the axle center of end face to be provided with circular opening, standard gain antenna 6 is dark by microwave is extended to set a distance 9 by the opening
Inside case 1, when calibration, makes the axial line of standard gain antenna 6 be overlapped with the center line in space attenuation area 10, standard gain antenna 6
Reception end face it is parallel with camera bellows output end face, the output terminal of standard gain antenna 6 is connect with microwave output cord 8, and microwave is defeated
The other end for going out cable 8 is connect with the input terminal of measuring receiver 3.
The output signal of microwave signal generator 2 is analog signal, and frequency meets 8GHz~12GHz, output power >=
0dBm；Standard gain antenna 6 is tubaeform, and working frequency meets 8GHz~12GHz, gain >=20dB；Measuring receiver 3 measures
Frequency range meets 8GHz~12GHz, dynamic range >=90dB.
Standard gain antenna 6 is mounted on adjustable stent 7, and stent 7 is using the structure shape with three axis locomotive functions
Formula, have thereon can fixed standard gain antenna 6 sliding block, can by adjusting antenna holder 7, realize sliding block up and down, it is left and right, preceding
Movement afterwards.
Included the following steps using above device to calibrate the method for 1 space attenuation of microwave camera bellows：
（1）Start microwave signal generator 2, signal is input to transmitting radiating guide 5, record by microwave input cable 4
Signal power P1,1 >=0dBm of power P.
（2）Signal is received, and will by the reception end face for the standard gain antenna 6 being mounted on to set a distance 9 in microwave camera bellows 1
Signal is transferred to measuring receiver 3 by microwave output cord 8, and measuring receiver 3 reads the performance number P2 of current Received Signal.
（3）The pad value IL of 6 position of Current standards gain antenna is calculated, formula is：
IL= P1- P2-A+Gr
In formula, the pad value in 1 space attenuation area 10 of IL --- microwave camera bellows, unit dB；
P1 --- the power of microwave generator output, unit dBm；
The power that P2 --- measuring receiver 3 measures, unit dBm；
The sum of pad value of A --- input microwave cable and output microwave cable 8, unit dB；
Gr --- the gain of standard gain antenna 6, unit dB；
Cable attenuation value and 6 yield value of standard gain antenna can be obtained by its technical specification.
By the pad value IL of calculating compared with standard value, you can obtain the error of microwave camera bellows 1, and then carry out correlometer again
Accurate measured value can obtain by conversion during calculation.
This calibrating installation is suitble to the calibration of the microwaves such as rectangle, cylinder or pyramid camera bellows 1 to calculate.Use this calibrating installation
When being calibrated to 1 space attenuation of microwave camera bellows, device the operation is stable, methodological science is reasonable, simulates microwave camera bellows 1 completely
Real use state, accurately and reliably, consistency is good for test data.
The above content is combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that the specific implementation of the utility model is confined to these explanations.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, several simple deduction or replace can also be made, should all be regarded
To belong to the scope of protection of the utility model.
Claims (6)
1. a kind of microwave camera bellows space attenuation calibrating installation, including microwave signal generator（2）, measuring receiver（3）, standard increase
Beneficial antenna（6）And the microwave camera bellows that case material is metal（1）, it is characterised in that：Microwave camera bellows（1）Above have and symmetrically set
The both ends of the surface put and be mutually parallel, one end be signal input part face, the other end be signal output end face, signal input part face with
There is space attenuation area between signal output end face（10）, in space attenuation area（10）Internal face is coated with absorbing material layer,
Transmitting radiating guide is equipped at the inside axle center in signal input part face（5）, emit radiating guide（5）It is inputted by being arranged on signal
Microwave input cable on the outside of end face（4）With microwave signal generator（2）Connection, is provided at the axle center in signal output end face
Opening, standard gain antenna（6）Microwave camera bellows is extended to by the opening（1）Inside, and standard gain antenna（6）Axial line
With space attenuation area（10）Center line overlap, standard gain antenna（6）Reception end face it is parallel with camera bellows output end face, standard
Gain antenna（6）Output terminal pass through microwave output cord（8）With measuring receiver（3）Input terminal connection.
2. microwave camera bellows space attenuation calibrating installation according to claim 1, it is characterised in that：The standard gain antenna
（6）To be tubaeform, working frequency meets 8GHz~12GHz, gain >=20dB.
3. microwave camera bellows space attenuation calibrating installation according to claim 1, it is characterised in that：The microwave signal occurs
Device（2）Output signal for analog signal, frequency meets 8GHz~12GHz, output power >=0dBm.
4. microwave camera bellows space attenuation calibrating installation according to claim 1, it is characterised in that：The measuring receiver
（3）Measurement frequency range meets 8GHz~12GHz, dynamic range >=90dB.
5. microwave camera bellows space attenuation calibrating installation according to claim 1, it is characterised in that：The standard gain antenna
（6）Mounted on adjustable stent（7）On.
6. microwave camera bellows space attenuation calibrating installation according to claim 1, it is characterised in that：The microwave camera bellows（1）
For rectangle, cylinder or pyramid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721746329.8U CN207528844U (en) | 2017-12-14 | 2017-12-14 | A kind of microwave camera bellows space attenuation calibrating installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721746329.8U CN207528844U (en) | 2017-12-14 | 2017-12-14 | A kind of microwave camera bellows space attenuation calibrating installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207528844U true CN207528844U (en) | 2018-06-22 |
Family
ID=62578429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721746329.8U Active CN207528844U (en) | 2017-12-14 | 2017-12-14 | A kind of microwave camera bellows space attenuation calibrating installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207528844U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884655A (en) * | 2017-12-14 | 2018-04-06 | 贵州航天计量测试技术研究所 | A kind of microwave camera bellows space attenuation calibrating installation and calibration method |
| CN109633630A (en) * | 2018-10-31 | 2019-04-16 | 上海无线电设备研究所 | A kind of E wave band millimeter wave imaging safety check radar system |
| CN107884655B (en) * | 2017-12-14 | 2024-06-21 | 贵州航天计量测试技术研究所 | Device and method for calibrating spatial attenuation of microwave camera bellows |
-
2017
- 2017-12-14 CN CN201721746329.8U patent/CN207528844U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884655A (en) * | 2017-12-14 | 2018-04-06 | 贵州航天计量测试技术研究所 | A kind of microwave camera bellows space attenuation calibrating installation and calibration method |
| CN107884655B (en) * | 2017-12-14 | 2024-06-21 | 贵州航天计量测试技术研究所 | Device and method for calibrating spatial attenuation of microwave camera bellows |
| CN109633630A (en) * | 2018-10-31 | 2019-04-16 | 上海无线电设备研究所 | A kind of E wave band millimeter wave imaging safety check radar system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108152772B (en) | High-amplitude field intensity sensor calibration method based on microwave darkroom | |
| CN205608094U (en) | Semi -anechoic chamber field uniformity testing arrangement | |
| CN102594961B (en) | Test system of mobile phone antenna | |
| CN102944780A (en) | Testing method for shielding effectiveness of small-size shielding cavity | |
| CN102857310A (en) | Test method and device for wireless indexes of active antenna system | |
| CN105973943B (en) | A kind of absorbing material traveling wave rejection test device and method | |
| CN102955077B (en) | Anti-interference measuring system and method for space distribution of environmental-electromagnetic radiation of mobile communication base station | |
| CN207528844U (en) | A kind of microwave camera bellows space attenuation calibrating installation | |
| CN105116249A (en) | Broadband shielding effectiveness test device of small shielding chassis and method | |
| CN104849592A (en) | Radio telescope broadband electromagnetic shielding effectiveness detection system and detection method thereof | |
| CN113109771B (en) | Calibration device for calibration instrument and true value calibration method for weather radar echo intensity | |
| CN105785114B (en) | Double load power sensors | |
| CN207399220U (en) | The rapid diagnosis system of wireless terminal | |
| CN106017317B (en) | A kind of airborne antenna installation accuracy detection method and detection device | |
| CN109669080B (en) | Spatial electric field intensity measuring device and method | |
| CN107884655A (en) | A kind of microwave camera bellows space attenuation calibrating installation and calibration method | |
| CN203164295U (en) | Apparatus for measuring input impedance and resonant frequency of power transmission line iron tower | |
| CN107884655B (en) | Device and method for calibrating spatial attenuation of microwave camera bellows | |
| CN205506954U (en) | 5m method anechoic chamber | |
| CN203164312U (en) | Testing system for measuring directional diagram of iron tower of power transmission line | |
| CN209764954U (en) | Space electric field intensity measuring device | |
| CN111212177B (en) | Test system of wireless terminal | |
| CN207424114U (en) | A kind of system for progress multichannel power frequency electric field measurement under high humidity conditions | |
| CN102916726A (en) | UWB (ultra-wide bandwidth) ranging based anchoring device for transformer substation | |
| CN113281710A (en) | Darkroom calibration device and method for measuring radar scattering cross section parameters |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |