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Low profile broadband medium back cavity four radiator antenna unit

A low-profile, radiator technology, applied in the direction of the radiating element structure, antenna, and antenna grounding switch structure connection, etc., can solve the problems of increasing the length of the coaxial line 10, increasing the volume and weight, and poor overall integration, and achieving the feedback Reduced electrical losses, reduced size and weight, and small feed losses

Active Publication Date: 2014-07-02
中国航空工业第六〇七研究所
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AI Technical Summary

Problems solved by technology

[0004] Its disadvantages are: first, large volume and weight
Since the connection between the microstrip line 12 and the stripline central conduction band 8 needs to run through the entire metal plate 3, the length of the coaxial line 10 is increased, which increases the feed loss; third, the overall integration is poor
The connection between the coaxial line 10 and the first metallized hole 11 and the second metallized hole 9 needs to use a coaxial connector, which makes the structure complicated, further increases the volume and weight, and increases the cost

Method used

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  • Low profile broadband medium back cavity four radiator antenna unit
  • Low profile broadband medium back cavity four radiator antenna unit
  • Low profile broadband medium back cavity four radiator antenna unit

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Embodiment Construction

[0014] The present invention will be described in further detail below. see Figure 4 to Figure 6 , a low-profile broadband dielectric cavity-backed four-radiator antenna unit, which includes a radiating dielectric plate 1, a microstrip feed dielectric plate 2, and a quarter power divider; on the upper surface of the radiating dielectric plate 1, there are four square components The radiation patch 13 arranged in a rectangle has four microstrip lines 12 on the upper surface of the microstrip feeding dielectric plate 2, and one end of each microstrip line forms a feeding coupling with a radiation patch 13, and the other end of each microstrip line One end is electrically connected to the upper end of a first metallized hole 11, and the lower surface of the radiation dielectric plate 1 is bonded as a whole with the upper surface of the microstrip feeding dielectric plate 2; The upper dielectric board 4, the lower dielectric board 5 of the power splitter and the SMA coaxial conn...

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Abstract

The invention belongs to a microwave antenna technology, and relates to the improvement of a broadband medium back cavity four radiator antenna unit. The low profile broadband medium back cavity four radiator antenna unit comprises a radiation medium plate (1), a microstrip feed medium plate (2) and a quartern power divider, and is characterized in that a medium back cavity is used to replace a metal back cavity. According to the invention, the volume and the weight are reduced; feed loss is reduced; the overall integration is improved; and the cost is reduced.

Description

technical field [0001] The invention belongs to microwave antenna technology, and relates to the improvement of a broadband dielectric back cavity four-radiator antenna unit. Background technique [0002] The phased array system, especially the active phased array system, enables the radar to have flexible electronic scanning, advanced power management and signal processing technology capabilities, and brings many excellent performances. Compared with ordinary airborne mechanical scanning fire control radars, airborne active phased array fire control radars not only have greatly improved performance in terms of operating range, anti-jamming capability, reliability, and antenna stealth design, but also have the ability to realize simultaneous multi- capabilities and capabilities such as multi-target attacks in the true sense. Dipole antennas and helical antennas have been successfully used in phased array systems, but the above-mentioned antennas have a high profile, resulti...

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/50H01Q13/08H01P5/12
Inventor 张兆成孙丹周丹晨
Owner 中国航空工业第六〇七研究所
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