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Linear polarization single pulse planar slot antenna

A slot antenna and monopulse technology, applied in slot antennas, antennas, antenna arrays, etc., can solve the problem of not being able to track high-speed aircraft, achieve stable radiation pattern, high antenna efficiency, and avoid the effect of feeding power division structure

Inactive Publication Date: 2018-07-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional sequential beam switching system and conical scanning system can no longer meet the requirements of tracking high-speed aircraft

Method used

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  • Linear polarization single pulse planar slot antenna
  • Linear polarization single pulse planar slot antenna
  • Linear polarization single pulse planar slot antenna

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Embodiment Construction

[0032] In traditional linearized RLSA, the slots on the radiating surface are arranged as figure 1 As shown, a linearly polarized radiating unit is composed of two adjacent slots (ie, slot pairs), and the radial distance between the two slots of each slot pair is half the guide wavelength λg / 2 and they are perpendicular to each other.

[0033] Combine below Figure 2 to Figure 5 The specific structure and implementation of the antenna of the present invention are described in detail. The flat panel slot antenna includes: a radial line waveguide 1 , a radiation slot array 2 , a coaxial probe 3 , a metal support plate 5 and a monopulse feeding network 6 . figure 2 It is a top view of the antenna structure of the present invention, the radial line waveguide 1 is fixed on the metal support plate 5 by 30 plastic screws 4, so that the radial line waveguide plays a supporting role and prevents the radial line waveguide from being deformed due to external force; The thickness of the...

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Abstract

The invention discloses a linear polarization single pulse planar slot antenna, and belongs to the antenna technical field; the antenna comprises a radiation slot feed layer and a single pulse feed network; the surface of a single layer radial line waveguide is provided with a radiation slot array; each ring of the radiation slot array is to arrange one slot to encircle the radial line waveguide center in one quadrant waveguide according to conventional linear polarization RLSA slot arrangement rules, and enables one slot to be symmetrical in up-down and left-right direction so as to obtain slots in four quadrant waveguides of the same ring, thus controlling the feed network to change feed phases, and realizing linear polarization and single pulse. The feed structure is simple in structure, can prevent a massive feed network structure, is small in loss, and high in antenna efficiency. Compared with a conventional linear polarization RLSA structure, the antenna can realize linear polarization and single pulse in the same time, and employs single slot to be a linear polarization radiation unit so as to improve the refection coefficient; the linear polarization single pulse planar slot antenna has a stable radiation pattern in a work frequency band, has an extreme low cross polarization level, and has an excellent return loss.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a linearly polarized monopulse flat panel slot antenna. Background technique [0002] In recent years, with the vigorous development of radar and satellite communication systems, the rapid progress of commercial civilian satellite TV reception, millimeter-wave radar collision avoidance systems, high-speed wireless local area networks, mobile connection base stations, and various millimeter-wave radio relay systems, antennas As the core component of sending and receiving electromagnetic waves, people's requirements for it are getting higher and higher. The flat panel array antenna is widely used in these fields because of its low profile and easy batch manufacturing. In the design process of the panel array antenna, the loss of the feeder determines the efficiency of the antenna, and the selection of the radiation element and the waveguide structure determines the cost of the an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q13/10H01Q21/00H01Q1/50
CPCH01Q1/50H01Q13/10H01Q21/00H01Q21/0006
Inventor 杨峰邵金维孙佳敏杨鹏刑志宇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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