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

Ultra wide band filter

A technology of ultra-wideband filters and resonators, which is applied in waveguide devices, electrical components, circuits, etc., can solve the problems of large size and achieve the effects of small size, reduced size, and high frequency selection performance

Inactive Publication Date: 2012-07-25
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF2 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After that, many other structures of multimode ultra-wideband filters were proposed [8-11] , but the resonance modes of the above-mentioned stepped impedance multimode resonators are difficult to be reasonably distributed in the required frequency band, and the size is large, so it is necessary to further study the new high-performance, miniaturized multimode microstrip bandpass with easy adjustment of the mode resonance mode filter

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
  • Ultra wide band filter
  • Ultra wide band filter
  • Ultra wide band filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] specific implementation plan

[0038] Below in conjunction with accompanying drawing, the implementation of technical scheme is described in further detail:

[0039] Such as figure 1 As shown, the first metal patch 1 of the ultra-wideband filter of the present invention includes a five-mode ladder impedance resonator 4 , an input coupling feeder 5 and an output coupling feeder 6 . The five-mode ladder impedance resonator 4 is composed of a low-resistance line 7, an open-circuit stub 8 and two short-circuit stubs 9, 10, the open-circuit stub 8 is loaded in the middle of the low-resistance line 7, and two sections The short-circuit stubs 9 , 10 are loaded symmetrically on both sides of the bottom line of the low-resistance line 7 .

[0040] The open line 8 is a ladder impedance open circuit structure, which is formed by connecting a section of low resistance line to a section of high resistance line.

[0041] Metallized through-holes 11 and 12 are respectively arranged...

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 provides an ultra wide band filter which comprises a first metal patch (1), a second metal patch (2) and a dielectric substrate (3), wherein the two metal patches are respectively coated on the upper surface and the lower surface of the dielectric substrate, the first metal patch comprises a five-mode step impedance resonator (4), an input coupling feed line (5) and an output coupling feed line (6); the five-mode step impedance resonator (4) comprises one section of low-resistivity line (7), one sections of open-circuit stub lines (8) and two sections of open-circuit stub lines; tail ends of the two sections of open-circuit stub lines are respectively provided with metallization through holes; and the second metal patch is provided with metallization through holes corresponding to those of the first metal patch and is connected with the first metal patch through the metallization through holes. The novel ultra wide band micro-strip band pass filter is realized by adopting a stub line loaded five-mode resonator, and has the characteristics of novel structure, high frequency selectivity, easy regulation of resonance mode, small size and low cost.

Description

technical field [0001] The invention relates to a five-mode ultra-broadband microstrip bandpass filter loaded by a stub, which belongs to the design field of millimeter wave and microwave devices. Background technique [0002] Ultra-wideband technology has broad application prospects in many fields such as radio communication, radar, tracking, precise positioning, imaging, and weapon control. [1] . The concept of "ultra-wideband-UWB" was first proposed by the US military in 1990, and its definition is any waveform whose relative bandwidth of the signal is greater than 25%. Since the U.S. Federal Communications Commission (FCC) allowed the commercial application of the UWB technology in 2002, the UWB technology has attracted widespread attention. Compared with other wireless technologies, UWB technology has the advantages of frequency bandwidth, low power consumption, fast transmission speed, good concealment, strong multipath resolution ability, large system capacity, and ...

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): H01P1/20H01P1/203
Inventor 陈雯赵永久邓宏伟谢中山
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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