CN217010876U - Test device for multi-frequency-band interference signal - Google Patents
Test device for multi-frequency-band interference signal Download PDFInfo
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- CN217010876U CN217010876U CN202220569301.6U CN202220569301U CN217010876U CN 217010876 U CN217010876 U CN 217010876U CN 202220569301 U CN202220569301 U CN 202220569301U CN 217010876 U CN217010876 U CN 217010876U
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Abstract
The utility model discloses a test device of multi-band interference signals, wherein the multi-band comprises a GSM frequency band, a 3G frequency band and a 4G frequency band, and the test device comprises: the signal generating device is used for providing a GSM frequency band interference signal, a 3G frequency band interference signal and a 4G frequency band interference signal; the three transmitting antennas are connected to the signal generating device in parallel and are positioned in a shielding chamber; the three transmitting antennas comprise a first transmitting antenna used for transmitting GSM frequency band interference signals to an object to be detected, a second transmitting antenna used for transmitting 3G frequency band interference signals to the object to be detected, and a third transmitting antenna used for transmitting 4G frequency band interference signals to the object to be detected; and the monitoring device is positioned in the shielding chamber and is used for recording the state of the object to be tested in the testing process. The testing device can test the interference to surrounding electronic equipment under different communication systems, and has the advantages of simple structure, convenient connection and low cost.
Description
Technical Field
The present invention relates to a test for interference signals, and more particularly, to a test apparatus for multi-band interference signals.
Background
Along with the development of science and technology, smart devices are more and more favored by people, such as smart phones. When the mobile phone works, different frequency bands such as GSm, 3G, 4G and the like can be used. Therefore, it is indispensable to generate disturbance signals with different frequencies, which affect other electronic devices. In the existing testing device, there is no interference test for other electronic products by the interference signals generated by different communication frequency bands.
Disclosure of Invention
In order to overcome the defects in the prior art, the embodiment of the utility model provides a test device for multi-band interference signals, the test device can test the interference on surrounding electronic equipment under different communication systems, and the test device has the advantages of simple structure, convenience in connection and low cost.
In order to achieve the purpose, the utility model adopts the technical scheme that: a test device for multi-band interference signals, wherein the multi-band interference signals comprise a GSM frequency band, a 3G frequency band and a 4G frequency band, the test device comprises:
the signal generating device is used for providing a GSM frequency band interference signal, a 3G frequency band interference signal and a 4G frequency band interference signal;
the three transmitting antennas are connected to the signal generating device in parallel and are positioned in a shielding chamber; the three transmitting antennas comprise a first transmitting antenna used for transmitting GSM frequency band interference signals to the object to be detected, a second transmitting antenna used for transmitting 3G frequency band interference signals to the object to be detected, and a third transmitting antenna used for transmitting 4G frequency band interference signals to the object to be detected;
and the monitoring device is positioned in the shielding chamber and is used for recording the state of the object to be tested in the testing process.
Preferably, an amplifier is arranged in the transmitting antenna, and the amplifier is used for amplifying the signal received from the signal generating device.
Preferably, the transmitting antenna is a patch antenna.
Further preferably, the mobile device is further included, the mobile device can move around the object to be detected, a detection position and a plurality of placement positions are arranged on the mobile device, and the transmitting antenna is detachably arranged on the detection position or the placement positions.
In the above technical solution, the device further includes a receiving antenna, where the receiving antenna is used to replace the object to be measured and calibrate the interference signal emitted by the emitting antenna.
In the technical scheme, the device further comprises a monitoring device, wherein the monitoring device comprises a field intensity probe arranged in the shielding chamber and a power meter connected with the field intensity probe.
In the above technical solution, the signal generating device has a signal modulation module therein, and is configured to modulate a signal into a GSM frequency band interference signal, a 3G frequency band interference signal, or a 4G frequency band interference signal.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
1. according to the utility model, three transmitting antennas are arranged, so that the three transmitting antennas can respectively transmit GSM frequency band interference signals, 3G frequency band interference signals and 4G frequency band interference signals, and the test of interference on peripheral electronic equipment under different communication systems is met. And three transmitting antennas are connected in parallel to the signal generating device, so that each transmitting antenna can independently operate, and the interference condition under a certain communication mode can be independently tested.
2. The amplifier is arranged in the transmitting antenna, so that the interference signal can be conveniently amplified to the required strength, and the test requirement is met.
3. The mobile device is provided with a detection position and a plurality of placing positions, and when the mobile device is tested, the antenna corresponding to the interference signal to be tested is arranged at the detection position, so that the mobile paths of different transmitting antennas relative to the object to be tested in the test process can be ensured to be the same when the interference signals under different communication modes are tested, and the accuracy of the test result is ensured.
In order to make the aforementioned and other objects, features and advantages of the utility model comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a testing apparatus for multi-band interference signals according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a mobile device according to an embodiment of the utility model.
Reference numerals of the above figures: 1. a signal generating device; 2. a first transmitting antenna; 3. a second transmitting antenna; 4. a third transmitting antenna; 5. a monitoring device; 6. a mobile device; 61. detecting a bit; 62. placing a bit; 7. a power meter; 8. a field strength probe; 9. and (4) shielding the chamber.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows: referring to fig. 1-2, a multi-band interference signal testing apparatus, where the multi-band interference signal includes a GSM band, a 3G band, and a 4G band, the testing apparatus includes:
the signal generating device 1 is used for providing a GSM frequency band interference signal, a 3G frequency band interference signal and a 4G frequency band interference signal;
three transmitting antennas which are connected in parallel to the signal generating device 1 and are positioned in a shielding chamber 9; the three transmitting antennas comprise a first transmitting antenna 2 used for transmitting GSM frequency band interference signals to an object to be measured, a second transmitting antenna 3 used for transmitting 3G frequency band interference signals to the object to be measured, and a third transmitting antenna 4 used for transmitting 4G frequency band interference signals to the object to be measured;
and the monitoring device 5 is positioned in the shielding chamber 9 and is used for recording the state of the object to be tested in the testing process.
By arranging the three transmitting antennas, the three transmitting antennas can respectively transmit GSM frequency band interference signals, 3G frequency band interference signals and 4G frequency band interference signals, and the interference test of peripheral electronic equipment under different communication systems is met. And three transmitting antennas are connected in parallel to the signal generating device 1, so that each transmitting antenna can independently operate, and the interference condition under a certain communication mode can be independently tested.
During actual testing, the GSM frequency band interference signals are respectively transmitted to the object to be tested through the first transmitting antenna 2, and the change of the working state of the object to be tested under the action of the GSM frequency band interference signals is observed. And then the second transmitting antenna 3 transmits a 3G frequency band interference signal to the object to be measured, and the change of the working state of the object to be measured under the action of the 3G frequency band interference signal is observed. And finally, transmitting a 4G frequency band interference signal to the object to be detected through the third transmitting antenna 4, and observing the change of the working state of the object to be detected under the action of the 4G frequency band interference signal. And the working state of the object to be measured under the influence of the interference signal of each frequency band is obtained through the sequential action of the plurality of transmitting antennas.
In a preferred embodiment, an amplifier is disposed in the transmitting antenna, and the amplifier is used for amplifying the signal received from the signal generating device 1, so that the signal strength meets the requirement to be measured.
Wherein the transmitting antenna is a patch antenna. Preferably, a dipole-coax antenna with a short size, for example 500 × 20mm, is used to facilitate the holding and moving of the moving device 6. The transmitting antenna also needs to meet the requirements of each frequency band of a plurality of communication systems, and can stably output interference signals.
In an alternative embodiment, the signal generating device 1 comprises a signal generator, a power amplifier connected to the signal generator. The signal generator is internally provided with a signal modulation module so as to modulate a signal into a specific GSM frequency band interference signal or a 3G frequency band interference signal or a 4G frequency band interference signal. The signal generating device 1 provides a signal frequency range of about 885MHz to 1910 MHz.
In an alternative embodiment, in order to observe the state change of the object under the action of the same interference signal in all directions, a moving device 6 can be further arranged, and the moving device 6 can move around the object to be measured. Specifically, a moving path may be preset, so that the moving device 6 moves according to the preset moving path, and interference signals with the same effect may be transmitted to different objects to be measured. Preferably, in order to ensure that the interference signals of different frequency bands can interfere with the object to be measured with the same effect, a detection position 61 and a plurality of placement positions 62 are disposed on the mobile device 6, and the transmitting antenna is detachably disposed at the detection position 61 or the placement positions 62, as shown in fig. 2. That is, during testing, the transmitting antenna corresponding to the interference signal to be tested is set at the detection position 61, the other two transmitting antennas are set at the placement position 62, and when the interference signal is to be replaced, the positions of the transmitting antennas are replaced. The moving device 6 can also select a mechanical arm, and the transmitting antenna is clamped by the mechanical arm to move around the object to be measured in a preset path.
The object to be tested can be a notebook computer, a tablet and the like. The monitoring device 5 can select a monitoring camera, and the monitoring camera is used for recording screen display changes. The monitoring device 5 can also be a computer connected with the object to be detected, and data monitoring software is arranged in the computer to monitor the data change of the object to be detected.
During actual test, interference signals are respectively transmitted to an object to be tested through the first transmitting antenna 2, the second transmitting antenna 3 and the third transmitting antenna 4,
in a preferred embodiment, the device further comprises a receiving antenna, wherein the receiving antenna is used for replacing the object to be measured and calibrating the interference signal emitted by the transmitting antenna. That is, before the test, the receiving antenna is disposed at a fixed position of the object to be tested in the shielding chamber 9, and the receiving antenna is used to receive the interference signal transmitted by the transmitting antenna, so as to determine whether the interference signal is a signal within a preset frequency band.
Further preferably, the monitoring device comprises a field intensity probe 8 arranged in the shielding chamber 9 and a power meter 7 connected with the field intensity probe 8. Before each test, the power meter 7 is used for measuring whether the intensity of an interference signal sent by the transmitting antenna meets the specified intensity through the field intensity probe 8, so that the normal operation of the test device is ensured.
The principle and the implementation mode of the utility model are explained by applying specific embodiments in the utility model, and the description of the embodiments is only used for helping to understand the method and the core idea of the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (7)
1. A test device for multi-band interference signals, wherein the multi-band interference signals comprise a GSM frequency band, a 3G frequency band and a 4G frequency band, the test device comprises:
the signal generating device is used for providing a GSM frequency band interference signal, a 3G frequency band interference signal and a 4G frequency band interference signal;
the three transmitting antennas are connected to the signal generating device in parallel and are positioned in a shielding chamber; the three transmitting antennas comprise a first transmitting antenna used for transmitting GSM frequency band interference signals to an object to be detected, a second transmitting antenna used for transmitting 3G frequency band interference signals to the object to be detected, and a third transmitting antenna used for transmitting 4G frequency band interference signals to the object to be detected;
and the monitoring device is positioned in the shielding chamber and is used for recording the state of the object to be tested in the testing process.
2. The apparatus for testing multi-band interference signals according to claim 1, wherein: an amplifier is arranged in the transmitting antenna and used for amplifying the signals received from the signal generating device.
3. The apparatus for testing multiband interference signals according to claim 1, wherein: the transmitting antenna is a patch antenna.
4. The apparatus for testing multi-band interference signals according to claim 1, wherein: the mobile device can move around the object to be detected, a detection position and a plurality of placing positions are arranged on the mobile device, and the transmitting antenna can be detachably arranged on the detection position or the placing position.
5. The apparatus for testing multiband interference signals according to claim 1, wherein: the device also comprises a receiving antenna, wherein the receiving antenna is used for replacing the object to be measured and calibrating the interference signal transmitted by the transmitting antenna.
6. The apparatus for testing multiband interference signals according to claim 1, wherein: the monitoring device comprises a field intensity probe arranged in the shielding chamber and a power meter connected with the field intensity probe.
7. The apparatus for testing multi-band interference signals according to claim 1, wherein: the signal generating device is internally provided with a signal modulation module which is used for modulating a signal into a GSM frequency band interference signal or a 3G frequency band interference signal or a 4G frequency band interference signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220569301.6U CN217010876U (en) | 2022-03-16 | 2022-03-16 | Test device for multi-frequency-band interference signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220569301.6U CN217010876U (en) | 2022-03-16 | 2022-03-16 | Test device for multi-frequency-band interference signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217010876U true CN217010876U (en) | 2022-07-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220569301.6U Active CN217010876U (en) | 2022-03-16 | 2022-03-16 | Test device for multi-frequency-band interference signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217010876U (en) |
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2022
- 2022-03-16 CN CN202220569301.6U patent/CN217010876U/en active Active
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