A Linearly Polarized Monopulse Flat Panel Slot Antenna

A slot antenna, 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, simple and lightweight antenna structure, and improve the effect of reflection coefficient

Inactive Publication Date: 2020-09-15
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • 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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  • A Linearly Polarized Monopulse Flat Panel Slot Antenna
  • A Linearly Polarized Monopulse Flat Panel Slot Antenna
  • A Linearly Polarized Monopulse Flat Panel 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 linearly polarized monopulse flat panel slot antenna, which belongs to the technical field of antennas. The antenna of the present invention includes a radiating slot feeding layer and a single pulse feeding network. The surface of the single-layer radial waveguide is provided with a radiating slot array, and each circle of the radiating slot array is formed by wrapping a slot around the radial line waveguide. The center of the circle is arranged in a quadrant waveguide according to the slot arrangement rule of the traditional linearly polarized RLSA, and then the slots in the four quadrant waveguides of the same circle are obtained symmetrically from top to bottom, left and right, and the line is realized by controlling the feed network to change the feed phase. polarized and monopulse. The present invention has a simple feeding structure, avoids a huge feeding network structure, has small loss, and has high antenna efficiency. Compared with the traditional linearly polarized RLSA structure, it can not only realize linear polarization, but also realize single pulse, Moreover, the use of a single slit as a linearly polarized radiation unit improves the reflection coefficient, and has a stable radiation pattern, extremely low cross-polarization level, and good return loss in the working frequency band.

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 Patents(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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