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

A Dual-Mode Balanced Filter Based on Microstrip Slotted Line Structure

A technology of balanced filters and filters, applied in waveguide devices, resonators, electrical components, etc., can solve problems such as suppressing common-mode signals and complex structures of balanced filters, and achieve simple circuit structure and high common-mode rejection characteristics , easy processing effect

Inactive Publication Date: 2016-08-24
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing balanced filter designs are mainly aimed at narrowband systems, because it is difficult to suppress common-mode signals in a wide frequency band, and balanced filters often have very complex structures

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
  • A Dual-Mode Balanced Filter Based on Microstrip Slotted Line Structure
  • A Dual-Mode Balanced Filter Based on Microstrip Slotted Line Structure
  • A Dual-Mode Balanced Filter Based on Microstrip Slotted Line Structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0033] The invention discloses a dual-mode balanced filter based on a microstrip slotted line structure, which includes a first filter and a second filter;

[0034] Both the first filter and the second filter include a microstrip line structure on the upper layer of the dielectric substrate and a slotted line structure on the lower layer of the dielectric substrate;

[0035] The microstrip line structure of the first filter includes a first feeder line, a second feeder line, a first resonator and a second resonator, and the slotted line structure of the first filter includes a first slotted line and a second Slotted line, the microstrip line structure of the second filter includes a third feeder line, a fourth feeder line, a third resonator and a fourth resonator, and the slotted line structure of the second filter includes a third slotted line str...

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 discloses a double-mode balance filter based on a micro-strip slotted line structure. The double-mode balance filter based on the micro-strip slotted line structure comprises a first filter and a second filter, wherein the first filter and the second filter are equal in size and symmetrical to each other. The first filter and the second filter respectively comprises a micro-strip line structure located on the upper layer of a dielectric substrate and a slotted line structure located on the lower layer of the dielectric substrate, wherein the micro-strip line structure of the first filter comprises a first feeder line, a second feeder line, a first harmonic oscillator and a second harmonic oscillator, and the slotted line structure of the first filter comprises a first slotted line and a second slotted line. The micro-strip line structure of the second filter comprises a third feeder line, a fourth feeder line, a third harmonic oscillator and a fourth harmonic oscillator, and the slotted line structure of the second filter comprises a third slotted line and a fourth slotted line. A bending structure is adopted by the first harmonic oscillator, the second harmonic oscillator, the third harmonic oscillator and the fourth harmonic oscillator, a part of each harmonic oscillator is located on the upper layer of the dielectric substrate, and the other part of each harmonic oscillator is located on the lower layer of the dielectric substrate. The double-mode balance filter based on the micro-strip slotted line structure has the advantages of being wide in frequency band and high in common-mode rejection, is simple in circuit structure and easy to manufacture, and has high practicability.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a dual-mode balanced filter based on a microstrip slotted line structure. Background technique [0002] In modern wireless communication systems, balanced devices have received more and more attention, because balanced devices can effectively suppress environmental noise and system internal noise. As an essential device in wireless communication systems, balanced filters have been extensively studied in recent years. The balanced filter has a filtering effect under the excitation of the differential mode signal, and can effectively suppress the noise generated in the environment and inside the system, so it is widely used in modern wireless communication circuits. Common-mode signals will reduce its signal-to-noise ratio, so in balanced circuit design, it is necessary to enhance the rejection level of common-mode signals as much as possible. [0003] Existing bal...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/203H01P7/08
Inventor 邓宏伟赵永久贺莹王洪李
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