Square frame internal cross circular tri-band microstrip antenna
A technology of microstrip antenna and circular ring, which is applied to antennas, resonant antennas, and devices that enable antennas to work in different bands at the same time, and can solve the problems that cannot meet the requirements of practical applications, increase the physical space occupied by multiple antennas, and make it difficult to realize and other issues, to achieve the effect of light weight, simple structure, small size, and easy production
Inactive Publication Date: 2016-02-24
CHINA JILIANG UNIV
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Previous single-band communication systems have been unable to meet the requirements of practical applications
Overall, there are two ways to achieve multi-frequency: one is to use broadband or ultra-wideband antennas to cover all frequency bands, but this method has certain limitations and is only applicable when two or more operating frequency bands are compared In a similar situation, if the high and low frequency bands are far apart, it will become difficult to implement; another method is to let the antennas in the system cover these frequency bands independently. This method is more common in practical applications. For the second method , we can use multi-antenna system, multi-antenna system has many advantages, such as improving system capacity, realizing pattern, gain classification and other functions
But at the same time, there are many technical difficulties, such as mutual coupling and interference between antenna units, and the use of multiple antennas will definitely increase the physical space occupied
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
[0020] A cross-shaped circular tri-band microstrip antenna connected in a square frame:
[0021] A glass fiber epoxy resin material with a dielectric constant of 4.4 is selected to make a microstrip substrate with a thickness of 0.8 mm. The substrate has a length of 26 mm and a width of 37 mm. The outer rectangle of the rectangular frame patch has a length of 22mm and a width of 20mm; the metal width of the rectangular frame patch is 1mm. The circular patch has an outer radius of 3.5mm and an inner radius of 2.5mm. The total length of the cross-shaped patch is 7mm, and the total width is 8mm; the horizontal metal width of the cross-shaped patch is 1.2mm, and the vertical metal width is 1.6mm. The length of the rectangular connecting wire is 1.2mm and the width is 1.0mm. The impedance-matched input transmission line has a length of 12mm and a width of 2.5mm. The stepped metal grounding plate consists of two rectangles, the upper rectangle has a length of 12mm and a width of...
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
Login to View More Abstract
The invention discloses a circular three-frequency microstrip antenna connected with a cross in a square frame. It includes a substrate, a rectangular frame patch, a circular patch, a cross-shaped patch, a rectangular connecting line, an impedance matching input transmission line, and a stepped metal grounding plate; the upper surface of the substrate is provided with a rectangular frame patch, a circular patch Chip, cross-shaped patch, rectangular connecting line and impedance-matched input transmission line, the lower surface of the substrate is provided with a stepped metal grounding plate, the stepped metal grounding plate is provided with a circular slot, the circular patch and the cross-shaped patch The slice is located inside the rectangular frame patch, the circular patch is connected with the rectangular frame patch through a rectangular connection line, and the bottom end of the cross-shaped patch is connected with the circular patch. The invention has the advantages of good radiation characteristics, multiple frequency bands, simple and small structure, light weight, easy manufacture and integration.
Description
technical field [0001] The invention relates to antennas, in particular to a circular three-frequency microstrip antenna with a cross in a square frame. Background technique [0002] The rapid development of wireless communication technology brings the need to expand system capacity and realize multi-mode communication. Previous single-band communication systems have been unable to meet the requirements of practical applications. Overall, there are two ways to achieve multi-frequency: one is to use broadband or ultra-wideband antennas to cover all frequency bands, but this method has certain limitations and is only applicable when two or more operating frequency bands are compared In a similar situation, if the high and low frequency bands are far apart, it will become difficult to implement; another method is to let the antennas in the system cover these frequency bands independently. This method is more common in practical applications. For the second method , we can use...
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 Patent Type & Authority Patents(China)
IPC IPC(8): H01Q9/04H01Q13/08H01Q5/10
Inventor 李九生
Owner CHINA JILIANG UNIV