S-shaped three-frequency small coplane antenna
A mobile phone antenna, small-scale technology, applied in antennas, resonant antennas, devices that enable antennas to work in different bands at the same time, can solve the problems of large radiation damage and easy damage of antennas, and achieve small size, easy manufacture, and good radiation characteristics Effect
Inactive Publication Date: 2014-02-12
CHINA JILIANG UNIV
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The external antenna is easily damaged if it is placed outside the body. When the antenna is close to the human body, it is easy to affect the signal receiving performance. The radiation damage of the antenna to the human body is relatively large. Different matching circuits are used when receiving and sending signals.
Method used
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
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0019] Choose a glass fiber epoxy resin material with a dielectric constant of 4.4 to make the substrate, with a thickness of 1.0mm. The substrate has a length of 120 mm and a width of 60 mm. The length of the impedance-matched input transmission line is 5mm, and the width is 1mm; the length of the first rectangular radiation patch is 18mm, and the width is 5mm. The length of the impedance matching short circuit is 2 mm, and the width is 1 mm; the length of the second rectangular radiation patch is 14 mm, and the width is 1 mm. The length of the upper base of the first right-angled trapezoidal radiation patch is 2mm, the length of the lower base is 4mm, and the length of the right-angled side is 2mm. The U-shaped radiation patch is formed by connecting the upper rectangular metal sheet, the left rectangular metal sheet and the lower rectangular metal sheet. The length of the upper rectangular metal sheet is 12mm, the width of the upper rectangular metal sheet is 0.5mm, and th...
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 PUM
| Property | Measurement | Unit |
|---|---|---|
| Length | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses an S-shaped three-frequency small coplane antenna which comprises a substrate, an impedance matching input transmission line, a first rectangular radiating patch, an impedance matching short circuit line, a second rectangular radiating patch, a first right-angle trapezoid radiating patch, a U-shaped radiating patch, a second right-angle trapezoid radiating patch, a third rectangular radiating patch and a metal ground connection plate. The impedance matching input transmission line, the first rectangular radiating patch, the impedance matching short circuit line, the second rectangular radiating patch, the first right-angle trapezoid radiating patch, the U-shaped radiating patch, the second right-angle trapezoid radiating patch, the third rectangular radiating patch and the metal ground connection plate are arranged on the upper surface of the substrate. The left end of the impedance matching input transmission line, the left end of the first rectangular radiating patch and the left end of the third rectangular radiating patch are all connected with the left end of the substrate. The bottom end of the metal ground connection plate is connected with the bottom end of the substrate. The S-shaped three-frequency small coplane antenna has the advantages of being low in loss, good in radiating characteristic, small in size, light in weight, easy to manufacture, convenient to integrate and the like.
Description
technical field [0001] The invention relates to antennas, in particular to an S-shaped tri-frequency small coplanar mobile phone antenna. Background technique [0002] Due to its convenience and quickness, mobile phones have become the most important means for people to maintain long-distance contact and communication. In a mobile communication system, whether it is a base station device or a mobile terminal device, the antenna is an essential component. As an important part of transmitting and receiving signals, the antenna plays an important role in ensuring the quality of calls and realizing instant communication. Therefore, the research of mobile phone antenna is one of the hot spots in the field of mobile communication. [0003] The earliest mobile phone antenna is an external antenna, which includes monopole antenna, helical antenna and PCB printed helical antenna. The external antenna is easily damaged if it is placed outside the body. When the antenna is close to ...
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 Application Information
Patent Timeline
Login to View More IPC IPC(8): H01Q9/04H01Q5/01H01Q5/10
Inventor 李九生
Owner CHINA JILIANG UNIV