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Miniaturized quasi Yagi-Uda antenna based on reflector deformed structure

A technology of deformation structure and reflector, which is applied in the structural form of radiating elements, antennas, antenna grounding devices, etc., can solve the problems of large antenna structure and loose layout, achieve compact antenna structure, reduce lateral length, and realize miniaturization Effect

Active Publication Date: 2017-05-31
HUAQIAO UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With this vertical layout, a considerable part of the vertical length of the antenna is occupied by the balance balun, which makes the overall structure of the quasi-Yagi antenna relatively loose, and the entire antenna structure appears to be larger

Method used

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  • Miniaturized quasi Yagi-Uda antenna based on reflector deformed structure
  • Miniaturized quasi Yagi-Uda antenna based on reflector deformed structure
  • Miniaturized quasi Yagi-Uda antenna based on reflector deformed structure

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Embodiment Construction

[0032] The present invention will be further described below through specific embodiments.

[0033] refer to Figure 3 to Figure 6 , a quasi-Yagi antenna based on a deformed reflector structure, comprising a dielectric substrate 10, an antenna feeder 70 arranged on the front of the dielectric substrate 10, a balanced balun 60, a differential mode feed circuit 50, a coplanar strip line 40, and a feed source The vibrator 30, the director 20, and the ground plate 11 arranged on the reverse side of the dielectric substrate 10, the length of the dielectric substrate is 0.40λ-0.42λ, the width is 0.37λ-0.40λ, and the range of the relative dielectric constant of the dielectric substrate is 3-6.5. The antenna feeder 70 is a microstrip line, one end of which is connected to the antenna port, and the other end is connected to one end of the balanced balun 60 . The balanced balun 60 is a microstrip line, the other end of which is connected to one end of the differential mode feed circui...

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Abstract

The invention provides a miniaturized quasi Yagi-Uda antenna based on a reflector deformed structure. The miniaturized quasi Yagi-Uda antenna comprises a dielectric substrate, an antenna feed line, a balancer, a differential mode feed circuit, a coplanar strip line, a feed source vibrator, a director and a ground strap, wherein one end of the antenna feed line is connected with an antenna port, and the other end is connected with one end of the balancer; the other end of the balancer is connected with one end of the differential mode feed circuit; the antenna feed line and the balancer are horizontally arranged on one side of one end of the dielectric substrate side by side; the other end of the differential mode feed circuit is connected with one end of the coplanar strip line; the feed source vibrator is horizontally arranged at the middle part of the dielectric substrate, and a source end of the feed source vibrator is connected with the other end of the coplanar strip line; the director is horizontally arranged at the other end of the dielectric substrate; and a first metal strip and a second metal strip are connected to two sides of the ground strap respectively. According to the miniaturized quasi Yagi-Uda antenna provided by the invention, the longitudinal and transverse lengths are reduced, so that miniaturization of the quasi Yagi-Uda antenna is realized, the structure of the antenna is more compact, and good electric property characteristics are ensured.

Description

technical field [0001] The invention relates to the field of Yagi antennas, in particular to a miniaturized quasi-Yagi antenna based on a reflector deformation structure. Background technique [0002] Yagi antenna (Yagi-Uda Antenna) is a conventional antenna. It has good directivity and higher gain than dipole antenna. It can be used in direction finding, long-distance communication and other fields. However, because the traditional Yagi antenna is a three-dimensional antenna, it is relatively bulky and difficult to integrate with microwave circuits. In 1998, the research team led by Professor Itoh of the University of California, Los Angeles cleverly applied the Yagi antenna technology to the printed circuit board (PCB), and realized the functions of the director, the feeding oscillator and the reflector by using the printed oscillator and the ground plate. , reducing the size of the traditional Yagi antenna. At the same time, 1 / 4 wavelength converter, balanced balun, dif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q19/30H01Q23/00H01Q1/36H01Q1/48H01Q1/50
CPCH01Q1/36H01Q1/48H01Q1/50H01Q19/30H01Q23/00
Inventor 汤炜
Owner HUAQIAO UNIVERSITY
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