Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Log-periodic dipole array antenna for feeding substrate integrated waveguide

A substrate-integrated waveguide and logarithmic period technology, which is applied to logarithmic period antennas, antennas, non-resonant long antennas, etc., can solve the problems of large size and difficult to use coaxial wire feeding, etc., and achieves good repeatability and convenience. Highly integrated, high-precision effects

Inactive Publication Date: 2009-12-30
SOUTHEAST UNIV
View PDF0 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Spatial logarithmic periodic array antennas are widely used in broadband communication systems. Due to their large size, they have gradually developed into printed logarithmic periodic array antennas. However, it is difficult for millimeter-wave printed logarithmic periodic array antennas to be fed by coaxial lines.

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Log-periodic dipole array antenna for feeding substrate integrated waveguide
  • Log-periodic dipole array antenna for feeding substrate integrated waveguide
  • Log-periodic dipole array antenna for feeding substrate integrated waveguide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1 Substrate Integrated Waveguide Feeding Logarithmic Periodic Dipole Array Antenna

[0025] The antenna structure is shown in Figure 4, and the dimensions are listed in Table I. Figure 5 is the measured antenna reflection coefficient, Figure 6-Figure 7 Indicates the pattern of the antenna at 20GHz and 35GHz, where Ex represents the main polarization pattern of the E plane; Hx represents the main polarization pattern of the H plane; ECo represents the cross polarization pattern of the E plane; Hco represents the cross polarization direction of the H plane picture.

[0026] Table I represents the dimensions of Example 1.

[0027] Table I

[0028] Antenna Geometry

[0029]

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

No PUM Login to View More

Abstract

The invention relates to a wideband log-periodic dipole array antenna for feeding a substrate integrated waveguide. An upper metal coating (2) is provided with an upper assembly line (5), upper feed source element antennae (7), an upper surface (9) of the substrate integrated waveguide, a microstrip taper transition line (6) and a 50-ohm output microstrip line (8) which are sequentially connected, wherein the upper assembly line (5) is connected with the upper surface (9) of the substrate integrated waveguide, the upper feed source element antennae (7) are respectively arranged at both sides of the upper assembly line (5); a lower metal coating (3) comprises a lower surface assembly line (11) of the log-periodic dipole array antenna, lower surface feed source element antennae (12), a lower surface (13) of the substrate integrated waveguide and a ground surface (14) of a microstrip line; the lower surface assembly line (11) of the log-periodic dipole array antenna is symmetric in parallel to the upper assembly line (5) of the log-periodic dipole array antenna, the lower surface feed source element antennae (12) are symmetric in cross to the upper feed source element antennae (7); and the lower surface (13) of the substrate integrated waveguide is symmetric to the upper surface (9) of the substrate integrated waveguide and is connected with the ground surface (14) of the microstrip line.

Description

technical field [0001] The invention is a logarithmic periodic dipole array antenna design technology based on a novel substrate integrated waveguide feeding structure. The designed antenna consists of logarithmic periodic dipole array antenna and substrate integrated waveguide structure. By cascading the substrate-integrated waveguide and the logarithmic periodic dipole array antenna, a broadband antenna with simple feeding structure, wide operating bandwidth and low loss is formed. The antenna design is based on planar printed circuit technology, which is small in size and suitable for planar high integration. Background technique [0002] With the rapid development of communication technology, broadband communication systems with many advantages such as low complexity, low cost, and wide operating bandwidth have been extensively researched and applied. Spatial log-periodic array antennas are widely used in broadband communication systems. Due to their large size, they h...

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
no application Login to View More
IPC IPC(8): H01Q11/10H01Q13/08
Inventor 翟国华洪伟蒯振起
Owner SOUTHEAST UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com