CN109633288A - Mechanism of High Power Microwave Pulse signal strength test macro and method in a kind of closed bin - Google Patents
Mechanism of High Power Microwave Pulse signal strength test macro and method in a kind of closed bin Download PDFInfo
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- CN109633288A CN109633288A CN201811597163.7A CN201811597163A CN109633288A CN 109633288 A CN109633288 A CN 109633288A CN 201811597163 A CN201811597163 A CN 201811597163A CN 109633288 A CN109633288 A CN 109633288A
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- 238000012986 modification Methods 0.000 description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
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Abstract
The invention proposes Mechanism of High Power Microwave Pulse signal strength test macro and methods in a kind of closed bin, receiving terminal of the gain directional antenna 1 as weak signal in closed bin, the interface of gain directional antenna 1 is connect with the input port of low-noise amplifier 3 again, 3 output port of low-noise amplifier is connect with 5 input port of high-speed microwave wave detector, and 5 output port of high-speed microwave wave detector is connect with 6 input port of oscillograph;Wherein, the working range that the small signal power that gain directional antenna 1 receives linearly is amplified to rear class high-speed microwave wave detector 5 is obtained narrow pulse signal by low-noise amplifier 3, and high-speed microwave wave detector 5 is converted narrow pulse signal power to after voltage signal and tested using oscillograph 7 it.The present invention efficiently solves when high power pulse signal carries out shield effectiveness detection to closed bin due to test problem caused by closed bin internal signal power is small, pulse is narrow.
Description
Technical Field
The invention belongs to the technical field of pulse signal field strength testing, and particularly relates to a system and a method for testing the field strength of a high-power microwave pulse signal in a closed bin.
Background
At present, with the development of high-power microwave technology, people put forward higher and higher requirements on high-power microwave measurement technology, especially in the field of high-power microwave protection. The high-power microwave pulse signal has the characteristics of low peak power, narrow pulse and the like after being shielded by the closed bin. Under these inherent characteristics, the conventional electromagnetic shielding testing method cannot be used, and therefore, a testing method different from the conventional electromagnetic shielding effectiveness is needed to detect the shielding effectiveness of various shielding devices and facilities.
Disclosure of Invention
The invention aims to solve the technical problem of providing a system and a method for testing the field intensity of a high-power microwave pulse signal in a closed bin.
In order to solve the technical problems, the technical solution adopted by the invention is as follows:
the invention provides a high-power microwave pulse space field strength test system in a closed bin, which comprises a high-gain directional antenna (1), a low-noise amplifier (3), a high-speed microwave detector (5) and an oscilloscope (7), and is characterized in that the high-gain directional antenna (1) is used as a receiving terminal of a weak signal in the closed bin, an interface of the high-gain directional antenna (1) is connected with an input port of the low-noise amplifier (3), an output port of the low-noise amplifier (3) is connected with an input port of the high-speed microwave detector (5), and an output port of the high-speed microwave detector (5) is connected with an input port of the oscilloscope (6); the low-noise amplifier (3) linearly amplifies a low-power pulse signal received by the high-gain directional antenna (1) to the working range of the rear-stage high-speed microwave detector (5) to obtain a narrow pulse signal, and the high-speed microwave detector (5) converts the power of the narrow pulse signal into a voltage signal and then uses the oscilloscope (7) to test the voltage signal.
The invention also provides a method for testing the high-power microwave pulse space field intensity in the closed bin, which is characterized in that a low-noise amplifier (3) linearly amplifies a low-power pulse signal received by a high-gain directional antenna (1) to the working range of a rear-stage high-speed microwave detector (5) to obtain a narrow pulse signal, and the high-speed microwave detector (5) converts the power of the narrow pulse signal into a voltage signal and then uses an oscilloscope (7) to test the voltage signal.
The invention achieves the following beneficial technical effects:
the high-gain directional antenna is used as a receiving terminal of a weak signal in the closed bin, so that a low-power signal of a high-power pulse signal after shielding can be better received in the closed bin. A low noise amplifier is adopted to linearly amplify the power of the received signal so as to meet the normal working requirement of the post detector. A microwave high-speed detector is adopted to meet the test requirement of narrow pulse of a received signal.
The invention effectively solves the testing problem caused by small signal power and narrow pulse in the closed bin when the high-power pulse signal is used for detecting the shielding effectiveness of the closed bin.
Drawings
FIG. 1 is a block diagram of a system for testing the spatial field strength of high-power microwave pulses in a closed bin according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments, but these examples are only illustrative and do not limit the scope of the present invention.
The system for testing the high-power microwave pulse space field intensity in the closed bin comprises a high-gain directional antenna 1, a low-noise amplifier 3, a high-speed microwave detector 5 and an oscilloscope 7.
The high-gain directional antenna 1 is used as a receiving terminal of weak signals in the closed bin, an interface of the high-gain directional antenna 1 is connected with an input port of the low-noise amplifier 3, an output port of the low-noise amplifier 3 is connected with an input port of the high-speed microwave detector 5, and an output port of the high-speed microwave detector 5 is connected with an input port of the oscilloscope 6.
After receiving the signal in the closed bin, the high-gain directional antenna 1 outputs a signal 2 to the input end of the low-noise amplifier 3, the low-noise amplifier outputs a signal 4 to the input end of the high-speed microwave detector 5, and the high-speed microwave detector outputs a signal 6 to the input end of the oscilloscope 7.
The low-noise amplifier 3 linearly amplifies the low-power pulse signal received by the high-gain directional antenna 1 to the working range of the rear-stage high-speed microwave detector 5 to obtain a narrow pulse signal, and the high-speed microwave detector 5 converts the power of the narrow pulse signal into a voltage signal and then uses the oscilloscope 7 to test the voltage signal.
The invention adopts a high-gain directional antenna as a receiving terminal of a weak signal in a closed bin, a low-noise amplifier linearly amplifies the power of a small signal received by the antenna to the working range of a post detector, and a high-speed microwave detector converts the power of a narrow pulse signal into a voltage signal and then uses an oscilloscope to test the voltage signal. The method effectively solves the test problem caused by small signal power and narrow pulse in the closed bin when the high-power pulse signal is used for detecting the shielding effectiveness of the closed bin.
While the invention has been described with reference to preferred embodiments, it is not intended to be limited thereto. It is obvious that not all embodiments need be, nor cannot be exhaustive here. Variations and modifications of the present invention can be made by those skilled in the art without departing from the spirit and scope of the present invention by using the design and content of the above disclosed embodiments, and therefore, any simple modification, parameter change and modification of the above embodiments based on the research essence of the present invention shall fall within the protection scope of the present invention.
Claims (2)
1. A high-power microwave pulse space field strength test system in a closed bin comprises a high-gain directional antenna (1), a low-noise amplifier (3), a high-speed microwave detector (5) and an oscilloscope (7), and is characterized in that,
the high-gain directional antenna (1) is used as a receiving terminal of weak signals in the closed bin, an interface of the high-gain directional antenna (1) is connected with an input port of the low-noise amplifier (3), an output port of the low-noise amplifier (3) is connected with an input port of the high-speed microwave detector (5), and an output port of the high-speed microwave detector (5) is connected with an input port of the oscilloscope (6); wherein,
the low-noise amplifier (3) linearly amplifies the low-power pulse signal received by the high-gain directional antenna (1) to the working range of the rear-stage high-speed microwave detector (5) to obtain a narrow pulse signal, and the high-speed microwave detector (5) converts the power of the narrow pulse signal into a voltage signal and then uses the oscilloscope (7) to test the voltage signal.
2. A high-power microwave pulse space field strength test method in a closed bin is characterized in that a low-noise amplifier (3) linearly amplifies a low-power pulse signal received by a high-gain directional antenna (1) to the working range of a rear-stage high-speed microwave detector (5) to obtain a narrow pulse signal, and the high-speed microwave detector (5) converts the power of the narrow pulse signal into a voltage signal and then uses an oscilloscope (7) to test the voltage signal.
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110266346A (en) * | 2019-07-05 | 2019-09-20 | 北京电子工程总体研究所 | Frequency agility signal Measurement of Hopping Time method and system |
CN110455829A (en) * | 2019-08-19 | 2019-11-15 | 电子科技大学 | High-Power Microwave is to the non-thermal influencing mechanism extraction system of dielectric substance and method |
CN113447742A (en) * | 2021-06-24 | 2021-09-28 | 中国舰船研究设计中心 | Wide spectrum/ultra-wide spectrum electromagnetic environment testing system |
CN115128361A (en) * | 2022-06-30 | 2022-09-30 | 电子科技大学 | System and method for testing pulse field strength in ultra-large dynamic range |
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CN110266346A (en) * | 2019-07-05 | 2019-09-20 | 北京电子工程总体研究所 | Frequency agility signal Measurement of Hopping Time method and system |
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CN115128361A (en) * | 2022-06-30 | 2022-09-30 | 电子科技大学 | System and method for testing pulse field strength in ultra-large dynamic range |
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Inventor after: Gao Feng Inventor after: Du Yong Inventor after: Hu Tiantao Inventor after: Wu Xiaosong Inventor before: Gao Feng |
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Application publication date: 20190416 |