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Broadband polarization reconfigurable antenna based on cross dipole and parasitic unit

A technology of crossed dipoles and parasitic elements, applied in the field of broadband polarization reconfigurable antennas, can solve problems such as wireless communication multipath interference, communication quality degradation, multipath fading, etc., and achieve improved axial ratio bandwidth, low production cost, Effect of Impedance Bandwidth Improvement

Pending Publication Date: 2019-12-20
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In addition, with the development of wireless communication, wireless applications are becoming more and more complex and diverse, resulting in an increasingly complex wireless communication environment. The challenges brought to wireless communication are serious multi-path interference and multi-path fading, communication quality decline

Method used

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  • Broadband polarization reconfigurable antenna based on cross dipole and parasitic unit
  • Broadband polarization reconfigurable antenna based on cross dipole and parasitic unit
  • Broadband polarization reconfigurable antenna based on cross dipole and parasitic unit

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Embodiment Construction

[0059] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0060] Such as figure 1 and Figure 2a As shown, a broadband polarization reconfigurable antenna based on crossed dipoles and parasitic elements, including crossed dipole radiating elements 1, parasitic radiating elements 2, chip capacitors 3, 3 / 4 feeding square loops 4, Insulation support column 5 , coaxial feeder unit 6 , reflection plate 7 , PIN diode switch 8 , microstrip line feeder unit 9 , and dielectric substrate 10 .

[0061] The microstrip line feed unit 9 includes a first microstrip line feed unit 91 and a second microstrip line feed unit 92; the first microstrip line feed unit 91 is etched on the front side of the dielectric substrate 10; the The second microstrip line feeding unit 92 is etched on the back of the dielectric substrate 10 . The insulating su...

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Abstract

The invention discloses a broadband polarization reconfigurable antenna based on a cross dipole and a parasitic unit. The antenna comprises a cross dipole radiation unit, a parasitic radiation unit, achip capacitor, a 3 / 4 feed square ring, an insulating support column, a coaxial feed line unit, a reflecting plate, a PIN diode switch, a microstrip line feed unit and a dielectric substrate; the cross dipole radiation unit, the parasitic radiation unit, the microstrip line feed unit, the embedded PIN diode switch and the chip capacitor are etched on the dielectric substrate. A basic unit of thecross dipole is a butterfly-shaped unit with two orthogonal arms, and the two arms of the butterfly-shaped unit are connected through the 3 / 4 feed square ring; slits are formed in the outer sides of the joints of the feed square ring and the arms; and the PIN diode switch is arranged between the microstrip line feed unit and the cross dipole unit. The antenna has the advantages of small size, light weight, simple structure, wide ultra-wideband and the like, and three working modes can be achieved by controlling on-off of the two PIN diode switches.

Description

technical field [0001] The invention relates to the research field of mobile communication, in particular to a broadband polarization reconfigurable antenna based on crossed dipoles and parasitic elements. Background technique [0002] The antenna is an indispensable part of the wireless communication system. With the rapid development of information technology and wireless communication technology, the antenna technology is also developing rapidly. In order to improve the communication quality of the wireless communication system and reduce the cost of the wireless communication system, multi-functional Miniaturization, planarization, and ultra-wide bandwidth have become the mainstream trends in antenna design. In order to realize the multi-function of wireless communication antenna system, reconfigurable antenna technology has become one of the key technologies of modern wireless communication antenna, and it is also a research hotspot in the field of antenna theory and de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q5/20H01Q5/307H01Q5/50H01Q19/10H01Q23/00
CPCH01Q23/00H01Q5/20H01Q5/307H01Q5/50H01Q19/108H01Q1/50H01Q1/38Y02D30/70
Inventor 靳贵平李龙廖绍伟
Owner SOUTH CHINA UNIV OF TECH