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A Parasitic Coupling Feed Multiband Antenna

A multi-band antenna, parasitic coupling technology, applied in the direction of antenna, antenna grounding device, antenna grounding switch structure connection, etc., can solve problems such as unfavorable engineering debugging and system integration design, inflexible design, large size, etc. The effect of small size and low profile

Active Publication Date: 2021-02-12
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the antenna adopts a double-layer structure, which is large in size, which is not conducive to engineering debugging and system integration design
In addition, Andrea Michel et al. designed a new type of broadband microstrip antenna in 2016, printing multiple monopole antennas on the same compact dielectric substrate, using microstrip line feed, but its size is large , and cannot be flexibly designed according to requirements

Method used

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  • A Parasitic Coupling Feed Multiband Antenna
  • A Parasitic Coupling Feed Multiband Antenna
  • A Parasitic Coupling Feed Multiband Antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0021] Implementation Case 1: The designed antenna is as follows figure 1 with figure 2 As shown, the antenna of the present invention mainly includes a rectangular dielectric substrate 101, a microstrip feeder 102, a capacitively coupled feed structure 103, symmetrical parasitic elements 104 and 105 are respectively an inverted R-shaped structure and an R-shaped structure, and a brush-shaped resonant element 106, And part of the ground plane 107 printed under the rectangular dielectric substrate 101; by adjusting the gap between the capacitive feeding structure 103 and the element, the resonant frequency and bandwidth of the antenna can be effectively adjusted. The pair of parasitic elements 104 and 105 are mirror-symmetrical to the center line of the dielectric substrate, and the brush-shaped resonant element 106 adopts a tooth-shaped structure with unequal lengths. The microstrip feeder 102 is connected to the inner conductor of the SMA connector, and the SMA outer conduc...

Embodiment example 2

[0022] Implementation case two: the present invention is embodiment 2 such as image 3 As shown, the antenna designed in this implementation case mainly includes a rectangular dielectric substrate 201, a microstrip feeder 202, a capacitively coupled feeder structure 203, and symmetrical parasitic elements 204 and 205 are respectively an inverted L-shaped structure and an L-shaped structure, and an E-shaped resonance The element 206, and part of the ground plane printed under the rectangular dielectric substrate 201; by adjusting the gap between the capacitive feeding structure 203 and the element, the resonant frequency and bandwidth of the antenna can be effectively adjusted. The pair of parasitic elements 204 and 205 are mirror-symmetrical to the center line of the dielectric substrate, and the resonant frequency band and resonance bandwidth can be adjusted by adjusting the length and width of the L-shaped element. The E-shaped resonant element 206 adopts an E-shaped structu...

Embodiment example 3

[0023] Implementation case three: the present invention is embodiment 3 such as Figure 4 As shown, this implementation case uses L-shaped capacitive coupling feeding on the basis of implementation case 2. The designed antenna mainly includes a rectangular dielectric substrate 301, a microstrip feeding line 302, an L-shaped capacitive coupling feeding structure 303, and symmetrical parasitic Elements 304 and 305 are reverse L-shaped structures and L-shaped structures respectively, E-shaped resonant element 306, and a part of the ground plane printed under the rectangular dielectric substrate 301; microstrip feeder 302 and L-shaped capacitively coupled feeder structure 303 form a coupling The feeding structure, the strength of the coupling feeding can be realized by adjusting the length and width of the L-shaped capacitive coupling feeding structure 303 . In addition, the coupling gap between the L-shaped capacitive coupling feeding structure 303 and the symmetrical parasitic e...

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Abstract

The present invention provides a multi-band antenna with parasitic coupling feeding, which uses coupling capacitor feeding to feed three elements respectively, thereby forming a multi-band antenna or a broadband antenna; the antenna mainly includes a rectangular dielectric substrate, a microstrip feeder , capacitive coupling feeding structure, symmetrical parasitic element and brush-shaped resonant element, and part of the ground plane printed under the rectangular dielectric substrate; by adjusting the gap between the capacitive feeding structure and the element, better impedance matching is achieved, so that The designed antenna meets the requirements of multi-band and wide-band; a parasitic coupling-feed multi-band antenna designed in the present invention has a lower profile and a smaller size, and can be flexibly designed according to the requirements of the working frequency band, and can be installed in mobile In handheld devices, high-quality communication is realized.

Description

technical field [0001] The invention relates to an antenna, in particular to a parasitic coupling feeding multi-band antenna. Background technique [0002] With the rapid development of communication technology, mobile communication services have entered thousands of households, bringing great changes to people's lives, especially wireless personal voice and digital services, which have greatly changed people's lives. Therefore, people's demands on mobile communication devices are increasing day by day, and existing mobile terminals integrate various functions. In order to meet the functional requirements of the characteristics, an antenna is usually required as a conversion device for transmitting and receiving energy. Today's communication equipment integrates multiple communication systems, requiring multiple antennas to be integrated inside the equipment, which often increases the volume of the equipment, increases the cost of the equipment, and is not conducive to the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q23/00H01Q5/10H01Q5/50H01Q5/307H01Q1/38H01Q1/48H01Q1/50
CPCH01Q1/38H01Q1/48H01Q1/50H01Q23/00H01Q5/10H01Q5/307H01Q5/50
Inventor 李迎松赵宇婷焦天奇王燕燕
Owner HARBIN ENG UNIV