CN112087271A - Antenna with radio frequency measuring device - Google Patents

Antenna with radio frequency measuring device Download PDF

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Publication number
CN112087271A
CN112087271A CN202011070675.5A CN202011070675A CN112087271A CN 112087271 A CN112087271 A CN 112087271A CN 202011070675 A CN202011070675 A CN 202011070675A CN 112087271 A CN112087271 A CN 112087271A
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China
Prior art keywords
module
radio frequency
frequency
antenna
output end
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CN202011070675.5A
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Chinese (zh)
Inventor
李楠
李军
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Guangzhou Changen Electronic Technology Co ltd
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Guangzhou Changen Electronic Technology Co ltd
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Priority to CN202011070675.5A priority Critical patent/CN112087271A/en
Publication of CN112087271A publication Critical patent/CN112087271A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/11—Monitoring; Testing of transmitters for calibration
    • H04B17/12—Monitoring; Testing of transmitters for calibration of transmit antennas, e.g. of the amplitude or phase
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

The invention provides an antenna with a radio frequency measuring device, which comprises an antenna and the radio frequency measuring device; the antenna comprises an antenna element, an element support and a signal wire; the radio frequency measuring device comprises a shielding shell, a balun, a preselector, a high-frequency amplification module, a frequency mixing module, a detection module, a data processing module, an optical fiber transceiving module and a power supply module; the balun, the preselector, the high-frequency amplification module, the frequency mixing module, the detection module, the data processing module, the optical fiber transceiving module and the power supply module are all arranged in the shielding shell; the antenna with the radio frequency measuring device provided by the invention eliminates cable loss caused by a radio frequency cable in a conventional test system and greatly reduces the influence of test uncertainty by adopting an integrated design, and can finish antenna calibration and receiver calibration at one time, so that the whole test is more convenient, and the test result is more accurate and reliable.

Description

Antenna with radio frequency measuring device
Technical Field
The invention relates to the field of electromagnetic compatibility testing, in particular to an antenna with a radio frequency measuring device.
Background
Electromagnetic Compatibility (EMC) refers to the ability of a device or system to function properly in its Electromagnetic environment without generating intolerable Electromagnetic interference to any device in the environment. On one hand, the electromagnetic compatibility means that the electromagnetic interference generated to the environment in the normal operation process of the equipment cannot exceed a certain limit value; another aspect is that the device has a degree of immunity to electromagnetic interference present in the environment in which it is located.
The existing electromagnetic compatibility testing system generally comprises an anechoic chamber, an antenna arranged inside the anechoic chamber, an amplifier arranged outside the anechoic chamber and a receiver. The antenna receives an electromagnetic signal sent by a test article and then sends the electromagnetic signal to a receiver through a radio frequency cable for reading; however, the conventional receiver needs to adapt to the test frequency bands of different antennas, so that the internal circuit of the receiver needs to satisfy a wide enough coverage frequency band range, so that the receiver has a large volume, and meanwhile, because the reading value and debugging requirements of a user on a detection signal need to be satisfied, a display screen, a key and other equipment need to be arranged, the electromagnetic compatibility of things per se is poor, and the receiver cannot be used in an anechoic chamber; if the radio frequency cable is arranged outside the anechoic chamber, the radio frequency cable is required to be connected with the antenna, however, the radio frequency cable has certain wire resistance, and the overlong radio frequency cable can attenuate signals received by the test antenna, so that the sensitivity and accuracy of test data are reduced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an antenna with a radio frequency measuring device, which adopts an integrated design, is directly connected with the radio frequency measuring device, avoids attenuation influence caused by a radio frequency cable, reduces the coverage frequency range of the radio frequency measuring device, eliminates the function which is useless for testing the frequency range and cancels part of peripheral equipment, reduces the volume of the radio frequency measuring device, and can be integrally arranged in a anechoic chamber or a shielding chamber for use.
The invention adopts the following technical scheme for realizing the purpose:
the invention provides an antenna with a radio frequency measuring device, which comprises an antenna and the radio frequency measuring device;
the antenna comprises an antenna element, an element support and a signal wire; the radio frequency measuring device comprises a shielding shell, a balun, a preselector, a high-frequency amplification module, a frequency mixing module, a detection module, a data processing module, an optical fiber transceiving module and a power supply module;
the balun, the preselector, the high-frequency amplification module, the frequency mixing module, the wave detection module, the data processing module, the optical fiber transceiving module and the power supply module are all arranged in the shielding shell; the antenna oscillator is fixed on the oscillator support, one end of the signal wire is connected with the antenna oscillator, and the other end of the signal wire is connected with the balun in the shielding shell; the shielding shell is fixedly connected with the oscillator bracket;
the shielding shell is also provided with a radio frequency signal output port and a radio frequency signal input port; the output end of the balun is connected with one end of the radio frequency signal output port, which is positioned in the shielding shell; one end of the radio frequency signal input port, which is positioned in the shielding shell, is connected with the input end of the preselector; the output end of the preselector is connected with the input end of the high-frequency amplification module, the output end of the high-frequency amplification module is connected with the input end of the frequency mixing module, the output end of the frequency mixing module is connected with the input end of the detection module, the output end of the detection module is connected with the input end of the data processing module, and the data processing module is further connected with the optical fiber transceiving module; an optical signal output interface is also arranged on the shielding shell, and the output end of the optical fiber transceiving module is connected with the optical signal output interface
The power supply module is used for supplying power to the balun, the preselector, the high-frequency amplification module, the frequency mixing module, the detection module, the data processing module and the optical fiber transceiving module;
and the coverage frequency band of the radio frequency measuring device is matched with the receiving frequency band of the antenna.
In an embodiment of the present invention, the antenna with the rf measuring device further includes an input attenuator;
the input end of the input attenuator is connected with one end of the radio-frequency signal output port, which is positioned outside the shielding shell, and the output end cable of the input attenuator is connected with one end of the radio-frequency signal input port, which is positioned outside the shielding shell.
In an embodiment of the present invention, the antenna with the rf measurement device further includes an input amplifier;
the input end of the input amplifier is connected with one end, located outside the shielding shell, of the radio-frequency signal output port, and the output end cable of the input amplifier is connected with one end, located outside the shielding shell, of the radio-frequency signal input port.
In an embodiment of the present invention, the mixing module includes a mixer, an oscillator, an intermediate frequency filter, an intermediate frequency attenuator, and an intermediate frequency amplifier;
the first input end of the frequency mixer is connected with the output end of the high-frequency amplification module, the second input end of the frequency mixer is connected with the oscillator, the output end of the frequency mixer is connected with the input end of the intermediate-frequency filter, the output end of the intermediate-frequency filter is connected with the input end of the intermediate-frequency attenuator, the output end of the intermediate-frequency attenuator is connected with the input end of the intermediate-frequency amplifier, and the output end of the intermediate-frequency amplifier is connected with the detection module.
In an embodiment of the present invention, the detection module includes a first radio frequency switch, a quasi-peak detector, an average detector, a peak detector, an effective value detector, a second radio frequency switch, and a low frequency amplifier;
the input end of the first radio frequency switch is connected with the output end of the frequency mixing module, and the first output end of the first radio frequency switch is connected with the input end of the quasi-peak detector; the second output end of the first radio frequency switch is connected with the input end of the average value detector; the third output end of the first radio frequency switch is connected with the input end of the peak detector; the fourth output end of the first radio frequency switch is connected with the input end of the effective value detector;
the output end of the quasi-peak detector is connected with the first input end of the second radio frequency switch; the output end of the average value detector is connected with the second input end of the second radio frequency switch; the output end of the peak detector is connected with the third input end of the second radio frequency switch; the output end of the effective value detector is connected with the fourth input end of the second radio frequency switch; the output end of the second radio frequency switch is connected with the input end of the low-frequency amplifier, and the output end of the low-frequency amplifier is connected with the data processing module;
and the control end of the first radio frequency switch and the control end of the second radio frequency switch are connected with the data processing module.
In an embodiment of the present invention, the shielding case is further provided with a data interface; the data interface is connected with the data processing module;
the data interface is used for enabling the data processing module to be in data communication with an upper computer.
In an embodiment of the present invention, at least one indicator light is further disposed on the shielding case;
the indicator light is connected with the data processing module; the data processing module is also used for controlling the working state of the indicator light.
In an embodiment of the present invention, the antenna with the radio frequency measurement device further includes a laser power supply module;
one end of the laser power supply module is connected with the laser generator, and the other end of the laser power supply module is connected with the power supply module.
Compared with the prior art, the invention has the beneficial effects that:
the antenna with the radio frequency measuring device provided by the invention eliminates cable loss caused by a radio frequency cable in a conventional test system and greatly reduces the influence of test uncertainty by adopting an integrated design, and can finish antenna calibration and receiver calibration at one time, so that the whole test is more convenient, and the test result is more accurate and reliable.
Drawings
Fig. 1 is a schematic structural diagram of an antenna with an rf measurement device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of the receiver according to an embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments, wherein the exemplary embodiments and descriptions are only used for explaining the present invention, but not for limiting the present invention.
It should be noted that, in the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The present invention provides an antenna with a radio frequency measuring device, as shown in fig. 1 and fig. 2, including an antenna 100 and a radio frequency measuring device 200;
the antenna 100 comprises an antenna 100 element, an element support and a signal wire; the radio frequency measuring device 200 comprises a shielding shell 210, a balun 220, a pre-selector 230, a high-frequency amplification module 240, a frequency mixing module 250, a wave detection module 260, a data processing module 270, an optical fiber transceiver module 280 and a power supply module 290;
the balun 220, the pre-selector 230, the high-frequency amplification module 240, the mixing module 250, the wave detection module 260, the data processing module 270, the fiber transceiver module 280 and the power supply module 290 are all disposed in the shielding shell 210; the antenna 100 oscillator is fixed on the oscillator bracket, one end of the signal wire is connected with the antenna 100 oscillator, and the other end of the signal wire is connected with the balun 220 in the shielding shell 210; the shielding shell 210 is fixedly connected with the oscillator bracket;
the shielding shell 210 is further provided with a radio frequency signal output port 211 and a radio frequency signal input port 212; the output end of the balun 220 is connected to one end of the radio frequency signal output port 211 located in the shielding shell 210; the radio frequency signal input port 212 is located in the shielding shell 210, and one end of the radio frequency signal input port is connected with the input end of the pre-selector 230; the output end of the pre-selector 230 is connected to the input end of the high-frequency amplification module 240, the output end of the high-frequency amplification module 240 is connected to the input end of the frequency mixing module 250, the output end of the frequency mixing module 250 is connected to the input end of the wave detection module 260, the output end of the wave detection module 260 is connected to the input end of the data processing module 270, and the data processing module 270 is further connected to the fiber transceiver module 280; the shielding case 210 is further provided with an optical signal output interface 213, and the output end of the optical fiber transceiver module 280 is connected to the optical signal output interface 213
The power module 290 is configured to supply power to the balun 220, the preselector 230, the high-frequency amplification module 240, the frequency mixing module 250, the detection module 260, the data processing module 270, and the optical fiber transceiver module 280;
the coverage frequency band of the rf measurement device 200 is matched with the receiving frequency band of the antenna 100;
the detection module 260 comprises a first rf switch 261, a quasi-peak detector 262, an average detector 263, a peak detector 264, an effective value detector 265, a second rf switch 266, and a low frequency amplifier 267;
specifically, an input end of the first radio frequency switch 261 is connected to an output end of the frequency mixing module, and a first output end of the first radio frequency switch 261 is connected to an input end of the quasi-peak detector 262; a second output terminal of the first rf switch 261 is connected to an input terminal of the average value detector 263; a third output terminal of the first rf switch 261 is connected to an input terminal of the peak detector 264; a fourth output terminal of the first rf switch 261 is connected to an input terminal of the effective value detector 265;
the output of the quasi-peak detector 262 is connected to a first input of the second rf switch 266; an output of the average detector 263 is connected to a second input of the second rf switch 266; an output of the peak detector 264 is connected to a third input of the second rf switch 266; an output of the valid detector 265 is connected to a fourth input of the second rf switch 266; the output end of the second radio frequency switch 266 is connected to the input end of the low frequency amplifier 267, and the output end of the low frequency amplifier 267 is connected to the data processing module;
the control end of the first rf switch 261 and the control end of the second rf switch 266 are both connected to the data processing module.
In an embodiment of the present invention, the antenna with the rf measuring device further includes an input attenuator;
the input end of the input attenuator is connected to one end of the rf signal output port 211 located outside the shielding case 210, and the output end cable of the input attenuator is connected to one end of the rf signal input port 212 located outside the shielding case 210.
In an embodiment of the present invention, the antenna with the rf measurement device further includes an input amplifier;
the input end of the input amplifier is connected to the end of the rf signal output port 211 located outside the shielding case 210, and the output end of the input amplifier is connected to the end of the rf signal input port 212 located outside the shielding case 210.
In an embodiment of the present invention, the shielding shell 210 is further provided with a data interface; the data interface is connected with the data processing module 270;
the data interface is used for enabling the data processing module 270 to perform data communication with an upper computer.
In an embodiment of the present invention, at least one indicator light is further disposed on the shielding shell 210;
the indicator light is connected with the data processing module 270; the data processing module 270 is further configured to control the operating state of the indicator light.
In an embodiment of the present invention, the antenna with the radio frequency measurement device further includes a laser power supply module;
one end of the laser power supply module is connected with the laser generator, and the other end of the laser power supply module is connected with the power supply module 290.
In a specific application scene of the invention, the antenna with the radio frequency measuring device is integrally arranged in an anechoic chamber or a shielding chamber for use, and is connected with an upper computer arranged outside the anechoic chamber or the shielding chamber through an optical fiber; a type-c data interface is also arranged on the shielding shell of the radio frequency measuring device, and a tester can carry out parameter setting or debugging and other work on the radio frequency measuring device through the data interface;
the antenna with the radio frequency measuring device provided by the invention adopts an integrated design, so that a tester does not need to debug again when in use, and can directly start testing; when the test is carried out, a tester selects whether to be externally connected with a pre-attenuator or a pre-amplifier according to the size of a signal to be tested, and when the pre-attenuator or the pre-amplifier is not required to be accessed, the tester directly connects a radio frequency signal output port on the shielding shell with a radio frequency signal input port by using a radio frequency cable; when the antenna 100 receives an electromagnetic signal, the radio frequency measurement device 200 performs corresponding filtering, amplification and signal processing on the received signal, and sends the signal to an upper computer outside the anechoic chamber through an optical fiber, and the upper computer converts the received optical signal into an electric signal again and displays related data of the received electromagnetic signal to a tester through a display screen; meanwhile, a tester can judge whether the working state of the radio frequency measuring device is normal or not by observing an indicator light signal on the radio frequency measuring device through an observation window of the anechoic chamber;
when a tester needs to calibrate or overhaul the antenna, the detection device can be connected with a radio frequency signal output port 211 on the radio frequency measurement device to obtain a received signal of the antenna and verify the working state of the antenna; when a tester needs to calibrate or overhaul the rf measurement device, the testing apparatus may be connected to the rf signal input port 212 of the rf measurement device to simulate signal input and verify the operating state of the rf measurement device.
According to the antenna with the radio frequency measuring device, firstly, the coverage frequency band of the radio frequency measuring device 200 is reduced, so that the antenna is only matched with the receiving frequency band of the antenna 100, the size of each part in a receiver is effectively reduced, traditional display and control equipment such as a display screen and a keyboard are removed, communication with an upper computer is changed through an optical fiber module, and therefore the functions of displaying the received signal of the receiver, adjusting the parameters of the receiver and the like are achieved, the radio frequency measuring device can be integrally arranged in a shielding shell, and the requirement of electromagnetic compatibility testing on auxiliary testing equipment is met; meanwhile, because the antenna 100 and the radio frequency measuring device 200 are directly connected, uncertainty caused by equipment such as a radio frequency cable, a radio frequency signal connector and the like in the traditional connection is avoided, and the accuracy of test data is further improved.
It should be understood that the above examples are only for clearly showing the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. It will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made herein without departing from the spirit and scope of the invention. Therefore, the protection scope of the present patent should be subject to the appended claims.

Claims (8)

1. An antenna with a radio frequency measuring device is characterized by comprising an antenna and the radio frequency measuring device;
the antenna comprises an antenna element, an element support and a signal wire; the radio frequency measuring device comprises a shielding shell, a balun, a preselector, a high-frequency amplification module, a frequency mixing module, a detection module, a data processing module, an optical fiber transceiving module and a power supply module;
the balun, the preselector, the high-frequency amplification module, the frequency mixing module, the detection module, the data processing module, the optical fiber transceiving module and the power supply module are all arranged in the shielding shell; the antenna oscillator is fixed on the oscillator support, one end of the signal wire is connected with the antenna oscillator, and the other end of the signal wire is connected with the balun in the shielding shell; the shielding shell is fixedly connected with the oscillator bracket;
the shielding shell is also provided with a radio frequency signal output port and a radio frequency signal input port; the output end of the balun is connected with one end of the radio frequency signal output port, which is positioned in the shielding shell; one end of the radio frequency signal input port, which is positioned in the shielding shell, is connected with the input end of the preselector; the output end of the preselector is connected with the input end of the high-frequency amplification module, the output end of the high-frequency amplification module is connected with the input end of the frequency mixing module, the output end of the frequency mixing module is connected with the input end of the detection module, the output end of the detection module is connected with the input end of the data processing module, and the data processing module is further connected with the optical fiber transceiving module; an optical signal output interface is also arranged on the shielding shell, and the output end of the optical fiber transceiving module is connected with the optical signal output interface
The power supply module is used for supplying power to the balun, the preselector, the high-frequency amplification module, the frequency mixing module, the detection module, the data processing module and the optical fiber transceiving module;
and the coverage frequency band of the radio frequency measuring device is matched with the receiving frequency band of the antenna.
2. The antenna with radio frequency measuring device of claim 1, further comprising an input attenuator;
the input end of the input attenuator is connected with one end of the radio-frequency signal output port, which is positioned outside the shielding shell, and the output end cable of the input attenuator is connected with one end of the radio-frequency signal input port, which is positioned outside the shielding shell.
3. The antenna with radio frequency measuring device of claim 1, further comprising an input amplifier;
the input end of the input amplifier is connected with one end, located outside the shielding shell, of the radio-frequency signal output port, and the output end cable of the input amplifier is connected with one end, located outside the shielding shell, of the radio-frequency signal input port.
4. The antenna with the radio frequency measuring device according to claim 1, wherein the mixing module comprises a mixer, an oscillator, an intermediate frequency filter, an intermediate frequency attenuator and an intermediate frequency amplifier;
the first input end of the frequency mixer is connected with the output end of the high-frequency amplification module, the second input end of the frequency mixer is connected with the oscillator, the output end of the frequency mixer is connected with the input end of the intermediate-frequency filter, the output end of the intermediate-frequency filter is connected with the input end of the intermediate-frequency attenuator, the output end of the intermediate-frequency attenuator is connected with the input end of the intermediate-frequency amplifier, and the output end of the intermediate-frequency amplifier is connected with the detection module.
5. The antenna with the radio frequency measuring device according to claim 1, wherein the detection module comprises a first radio frequency switch, a quasi-peak detector, an average detector, a peak detector, an effective value detector, a second radio frequency switch and a low frequency amplifier;
the input end of the first radio frequency switch is connected with the output end of the frequency mixing module, and the first output end of the first radio frequency switch is connected with the input end of the quasi-peak detector; the second output end of the first radio frequency switch is connected with the input end of the average value detector; the third output end of the first radio frequency switch is connected with the input end of the peak detector; the fourth output end of the first radio frequency switch is connected with the input end of the effective value detector;
the output end of the quasi-peak detector is connected with the first input end of the second radio frequency switch; the output end of the average value detector is connected with the second input end of the second radio frequency switch; the output end of the peak detector is connected with the third input end of the second radio frequency switch; the output end of the effective value detector is connected with the fourth input end of the second radio frequency switch; the output end of the second radio frequency switch is connected with the input end of the low-frequency amplifier, and the output end of the low-frequency amplifier is connected with the data processing module;
and the control end of the first radio frequency switch and the control end of the second radio frequency switch are connected with the data processing module.
6. The antenna with the radio frequency measuring device according to claim 1, wherein the shielding case is further provided with a data interface; the data interface is connected with the data processing module;
the data interface is used for enabling the data processing module to be in data communication with an upper computer.
7. The antenna with the radio frequency measuring device according to claim 1, wherein the shielding case is further provided with at least one indicator light;
the indicator light is connected with the data processing module; the data processing module is also used for controlling the working state of the indicator light.
8. The antenna with the radio frequency measuring device of claim 1, further comprising a laser power supply module;
one end of the laser power supply module is connected with the laser generator, and the other end of the laser power supply module is connected with the power supply module.
CN202011070675.5A 2020-10-09 2020-10-09 Antenna with radio frequency measuring device Pending CN112087271A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011070675.5A CN112087271A (en) 2020-10-09 2020-10-09 Antenna with radio frequency measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011070675.5A CN112087271A (en) 2020-10-09 2020-10-09 Antenna with radio frequency measuring device

Publications (1)

Publication Number Publication Date
CN112087271A true CN112087271A (en) 2020-12-15

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CN202011070675.5A Pending CN112087271A (en) 2020-10-09 2020-10-09 Antenna with radio frequency measuring device

Country Status (1)

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