Space-fed high-gain end-fire array antenna based on electromagnetic surface technology

An electromagnetic surface, end-fire array technology, applied in space feed arrays, linear waveguide feed arrays, and individually energized antenna arrays, etc. Coupling limiting, increasing gain, low profile effects
CN109768389BActive Publication Date: 2021-01-22TSINGHUA UNIV
4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2021-01-22

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a space-fed high-gain end-fire array antenna based on electromagnetic surface technology, comprising: a primary feed source for transmitting and / or receiving electromagnetic waves; and a single-layer and / or multi-layer extremely thin The combined surface of dielectric and metal is used to convert the electromagnetic wave emitted by the primary feed into an end-fire focused beam, or to converge the space wave received in the end-fire direction into the primary feed. The antenna of the embodiment of the present invention has the following significant advantages: (1) It only needs an extremely thin electromagnetic surface, and has the advantages of light weight, extremely low profile, and low manufacturing cost. (2) The reflection beam and the transmission beam are integrated, which increases the utilization rate of the antenna, saves the space occupied by the antenna, and further reduces the weight of the antenna. (3) The antenna gain will increase with the increase of the aperture size.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of antennas, in particular to a space-fed high-gain end-fire array antenna based on electromagnetic surface technology. Background technique

[0002] The airborne radar system undertakes the task of air patrol and alert, makes up for the blind spots of ground radar, monitors, detects, tracks and identifies incoming air targets, and monitors the battlefield situation. In order to better accomplish its intended tasks, an ideal airborne radar should meet two conditions: one is that the beam covers a wide airspace and the radar blind area is small; capacity and mobility. In practical applications, these two conditions are difficult to be satisfied at the same time, because the principle of the side-fire phased array determines that to make the high-gain beam cover a certain airspace, the corresponding airborne phased array antenna must Have a correspondingly large enough caliber. To ensure that the scanning b...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More