Unlock instant, AI-driven research and patent intelligence for your innovation.

Left-right-hand structure-based miniaturized high-performance microstrip filter

A technology of left and right hands and filters, applied in waveguide devices, circuits, electrical components, etc., can solve the problems of poor upper stop band suppression, filter performance degradation, unfavorable engineering applications, etc., and achieve light weight, easy processing, and low cost low effect

Inactive Publication Date: 2017-03-29
NANJING UNIV OF SCI & TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these filters sacrifice other performance while achieving miniaturization, such as high loss, poor matching, or poor upper stopband rejection
[0004] It can be seen from the above that the existing conventional microstrip filter area is too large, even if it is miniaturized, the performance of the filter will decrease, which is not conducive to practical engineering applications and increases the cost

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
  • Left-right-hand structure-based miniaturized high-performance microstrip filter
  • Left-right-hand structure-based miniaturized high-performance microstrip filter
  • Left-right-hand structure-based miniaturized high-performance microstrip filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] combine figure 1 , the miniaturized high-performance microstrip filter of the left and right hand structure provided by the present invention has two identical left and right hand resonant units 1, two identical port feeders 4, a dielectric substrate 5 and a metal floor 6, and the two port feeders 4 and the two Both left and right hand resonant units 1 are printed on the upper surface of the dielectric substrate 5, and a metal floor 6 is arranged under the dielectric substrate 5. The two port feeders 4 can be located on the left side of the left and right hand resonant unit 1, and are symmetrically distributed along the y-axis. , the two left and right hand resonant units 1 are distributed axially symmetrically along the y-axis, wherein the upper left and right hand resonant units are connected to the upper port feeder, and the lower left and right hand resonant units are connected to the lower port feeder. Where two of the same port feeder 4 line width W f 2.365mm, tw...

Embodiment 2

[0025] combine image 3 , the miniaturized high-performance microstrip filter of the left and right hand structure provided by the present invention has two identical left and right hand resonant units 1, two identical port feeders 4, a dielectric substrate 5 and a metal floor 6, and the two port feeders 4 and the two Both left and right hand resonant units 1 are printed on the upper surface of the dielectric substrate 5, and a metal floor 6 is arranged under the dielectric substrate 5. The two port feeders 4 can be located on the left side of the left and right hand resonant unit 1, and are symmetrically distributed along the y-axis. , the two left and right hand resonant units 1 are distributed axially symmetrically along the y-axis, wherein the upper left and right hand resonant units are connected to the upper port feeder, and the lower left and right hand resonant units are connected to the lower port feeder. Where two of the same port feeder 4 line width W f 2.365mm, tw...

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

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Gapaaaaaaaaaa
Widthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a left-right-hand structure-based miniaturized high-performance microstrip filter. The microstrip filter is based on a left-right-hand transmission line structure, and consists of interdigital type capacitors and high-impedance line inductors. By adoption of the filter provided by the invention, high-performance upper stop band suppression, high-performance selectivity and low-loss characteristics are ensured while remarkable area miniaturization is realized; compared with other filter of the same working frequency and the same processing technique, the area of the microstrip filter disclosed by the invention is reduced by at least 75%; and in addition, the bandwidth of the microstrip filter is controllable, and 3-dB relative bandwidth can be changed from 10% to 30%. The microstrip filter adopts a two-sided microwave dielectric plate, so that the microstrip filter is simple in structure, easy to process, low in cost, light in weight and capable of realizing large-scale production.

Description

technical field [0001] The invention relates to a microstrip filter, in particular to a miniaturized high-performance microstrip filter based on a left-handed structure. Background technique [0002] In microwave and integrated circuit systems, microstrip filter is an important component, and microwave filter is a device used to separate microwave signals of different frequencies. Its main function is to suppress unwanted signals so that they cannot pass through the filter and only allow the required signals to pass. In the microwave circuit system, the performance of the filter has a great influence on the performance index of the circuit, so how to design a filter with high performance is of great significance to the design of the microwave circuit system. [0003] The currently realized miniaturized filters are mainly through the use of strongly coupled resonant units. The literature that can be referred to is: [1] H.-W.Wu, G.-S.Chen and Y.-W.Chen, “New compact triple -...

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): H01P1/20
CPCH01P1/2002
Inventor 车文荃沈光煦冯文杰杨琬琛
Owner NANJING UNIV OF SCI & TECH