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

Method for carrying out butler matrix

A matrix and network technology, applied in the field of Butler matrix beamforming network, which can solve problems such as difficulty and synthesis loss

Inactive Publication Date: 2008-07-23
TENXC WIRELESS
View PDF0 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] [5] In simply connecting the antenna elements to their respective beamforming networks there will be significant combining losses
[0033] [31] However, it is evident from Figure 2 that the introduction of combiners between beam ports B1 250 and B3 260 and between beam ports B2 255 and B4 265 would necessitate the use of long transmission lines and / or crossing points , this need will create additional difficulties
Also, it is evident from Figure 2 that introducing a connection between beam ports B1 250 and B4 265 would necessitate the use of long leads and / or crosspoints

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
  • Method for carrying out butler matrix
  • Method for carrying out butler matrix
  • Method for carrying out butler matrix

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] [45] Reference is now made to Fig. 3, which shows an example embodiment of the novel two-dimensional planar printed circuit board structure of the present invention for a 4×4 Butler matrix with the ability to synthesize beam port pairs.

[0048] [46] The figure includes: four unit ports marked E1 200, E2 205, E3 210 and E4 215, four beam ports marked B1 350, B2 355, B3 360 and B4 365, respectively marked Four mixing units H1 220, H2 225, H3 240 and H4 245, two 45° phase shifters denoted PS1 330 and PS2 335 respectively, and two connectors denoted 331 and 332 respectively.

[0049] [47] Electrically, the Butler matrix in Fig. 3 is identical to the Butler matrix in Fig. 2. The main difference is the inwardly facing positioning of the beam ports 350, 355, 360 and 365, and the resulting change in the length of the phase shifters 330, 335 and connectors 331, 332.

[0050] [48] ​​The inward-facing positioning of the beam ports enables beam port pairs B1 350 and B3 360 and B2...

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

A novel implementation of a planar 4x4 RF Butler matrix layout is disclosed that permits, by moving the beam ports to the interior of the layout, for combining beam ports that are not disposed on the same side of the layout without the imposition of long delay times or crossover points. The implementation admits of using microstrip and / or stripline technologies.

Description

technical field [0001] [1] The present invention relates to a Butler matrix beamforming network, and more specifically to an improved structure of a 4×4 Butler matrix. Background technique [0002] [2] In wireless communication systems, sector antennas are gradually replaced by phased array or beamforming antennas. Such an antenna comprises an array of fixed antenna elements connected by a beamforming network between the antenna elements and beam ports. The beam pattern of the antenna is determined by the phase and amplitude relationship of the beamforming network. The phase and magnitude relationship of the signals between the antenna elements and the beam ports can be adjusted to generate shaped beam patterns. So, for example, by simply adjusting the phase and amplitude of the antenna signal at different slots, a single antenna array will generate center, left and right beams of antenna energy. [0003] [3] Phase and amplitude adjustments are usually effected by a beamf...

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): H04B7/04H04L1/06H04B7/0408
CPCH01Q3/40H01Q25/00
Inventor 许玉峰
Owner TENXC WIRELESS
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