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Phased array antenna equivalent isolation degree testing method

A phased array antenna and array antenna technology, applied in directions such as antenna radiation patterns, can solve problems such as the inability to accurately reflect the true isolation result between the array antenna and the array antenna, the inability to characterize the radiation characteristics of the array antenna, the inconsistency of distance and directivity, etc. Achieve the effect of improving accuracy and test efficiency, improving test result accuracy, and improving test accuracy

Active Publication Date: 2013-07-24
SHAANXI AIRCRAFT CORPORATION
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Problems solved by technology

The disadvantage is that this test method is based on the isolation test method between the unit antennas. For phased array antennas, the beam radiation characteristics of the array antenna are mainly realized by phase synthesis, and the array unit antenna can no longer characterize the array antenna. Radiation characteristics, and the array antenna is composed of dozens or even hundreds of unit antennas. The distance and directionality of each unit array are inconsistent. The data obtained through the unit array antenna test cannot accurately reflect the phased array antenna and the unit antenna. The real isolation result between the antenna and the array antenna, the result deviation is too large, which does not meet the actual design situation, and the test cycle of the array subunits is long, and the engineering applicability is poor

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  • Phased array antenna equivalent isolation degree testing method

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the drawings, please refer to Figure 1 to Figure 3 .

[0025] Such as figure 1 Shown is a schematic diagram of the structure of the test system used in the present invention; the present invention uses a test system with a measurement and control computer as the core to collect the information of the phased array antenna and the coupling energy at the other end of the equivalent link 5. The test system consists of The measurement and control computer 12 and the vector network analyzer 11 are used to collect the angle 14, frequency 15 and amplitude 13 of the phased array antenna through the vector network analyzer 11, and send it to the measurement and control computer 12 for data processing and automatically draw the output angle 14 , Three-dimensional curve of frequency 15 and amplitude 13.

[0026] According to the working principle of the phased array antenna, analyze the influence of t...

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Abstract

The invention discloses a plane antenna engineering equivalent testing method and particularly relates to a phased array antenna equivalent isolation degree testing method. The array antenna isolation degree is calculated in the first place, an arbitrary unit array element of a phased array antenna is subsequently chosen as a testing reference point, and then a gain correction coefficient of the array antenna is calculated. The plane antenna engineering equivalent testing method can successfully solve engineering test deviation due to uncertainty of gain of an antenna main lobe and the antenna, wherein the uncertainty of the gain of the antenna main lobe and the antenna is caused by variation of array antenna phase synthesis. By introducing correction factors such as the gain after phase synthesis, an antenna array angle and beam width deviation, the phased array antenna is changed to be an equivalent unit antenna. The phased array antenna equivalent isolation degree testing method is suitable for isolation degree engineering tests between the phased array antenna and a unit antenna and between the array antennas and can be popularized and applied to array antenna isolation degree engineering tests on all sorts of weapon equipment platforms.

Description

Technical field [0001] The invention relates to the field of aircraft antenna testing, in particular to a method for testing the equivalent isolation between a phased array antenna and a unit antenna, and an array antenna and the array antenna. Background technique [0002] Antenna isolation testing is mainly used for aircraft antenna layout design, which is very important for the development of special aircraft. In the domestic phased array antenna isolation test method, each element of the array antenna is used as the test object, and the other related element antennas are tested one-to-one, and the isolation test based on the characteristics of the research element antenna object is carried out. Method research has achieved certain results. The current antenna isolation test method of aircraft is based on the energy transmission relationship between the unit antenna airborne transceiver equipment. The disadvantage is that this test method is based on the isolation test metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/10
Inventor 周继春杨智辉刘焱张秦洲石彩云苏陆锋李汉西高小红张青许晓岚
Owner SHAANXI AIRCRAFT CORPORATION
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