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

Multiple-zero miniaturized inlaid dual-bandpass filter

A dual-pass band filter and resonator technology, applied in waveguide-type devices, electrical components, circuits, etc., can solve the problems of complex overall structure, and achieve the effect of effective system out-of-band noise and filtering out system out-of-band noise.

Inactive Publication Date: 2018-06-29
NANJING PANDA ELECTRONICS +1
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Multi-passband system filtering can be realized with a single-passband filter, but the overall structure of the circuit is much more complicated than that of dual-passband and multi-passband filters

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
  • Multiple-zero miniaturized inlaid dual-bandpass filter
  • Multiple-zero miniaturized inlaid dual-bandpass filter
  • Multiple-zero miniaturized inlaid dual-bandpass filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] like figure 1 It is a schematic diagram of the structure of a miniaturized mosaic double-passband filter. Due to the high operating frequency of the filter, the filter is implemented on Rogers R4350 with a thickness of 0.508mm, a dielectric constant of 3.66, and a tangent loss of 0.002 as the substrate material. . The front side is the filter circuit, and the back side is the copper-clad ground plane.

[0026] The circuit network of the dual-passband filter includes an input transmission line, an output transmission line, two 1 / 4 ring stepped impedance resonators (ie Resonator1, Resonator2) and two traditional 1 / 4 stepped impedance resonators (ie Resonator3, Resonator4) .

[0027] like figure 1 As shown in , Resonator1 and Resonator2 have the same shape and size, which can be specifically designed to form a rectangular ring by hollowing out the center of the low-impedance line (that is, the low-impedance transmission line) in the traditional 1 / 4SIR structure (stepped...

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 multiple-zero miniaturized inlaid dual-bandpass filter. A third harmonic oscillator and a fourth harmonic oscillator adopt 1 / 4 of an SIR structure, and each of the third harmonic oscillator and a fourth harmonic oscillator comprises a low impedance line part and a high impedance line part; a first harmonic oscillator and a second harmonic oscillator adopt 1 / 4 of the annular SIR structure, each of the first harmonic oscillator and the second harmonic oscillator comprises a rectangular ring part and a linear part, the ground terminals of the linear parts of the first harmonic oscillator and the second harmonic oscillator are connected with each other and share a first ground connection through hole, and the other end points of the linear parts are connected with thetop points of the rectangular ring parts respectively; a third harmonic oscillator and a fourth harmonic oscillator are arranged inside the rectangular rings of the first harmonic oscillator and thesecond harmonic oscillator, and the ground terminals of the high impedance lines are connected to a second ground connection through hole and a third ground connection through hole respectively; and an input terminal transmission line and an output terminal transmission line are positioned on the outer side of the first harmonic oscillator and the outer side of the second harmonic oscillator. A plurality of transmission zeros can be introduced into the filter, and then the positions of the zeros of the filter can be changed according to different adjusting filtering parameters of the item.

Description

technical field [0001] The invention relates to a miniaturized mosaic microstrip double-passband filter with compact structure, multiple transmission zero points outside the band and adjustable zero point positions, and belongs to the technical field of microwave communication microstrip line filters. Background technique [0002] The quality of the filter is related to the performance of the entire radio system. The filter can split and recombine the frequency; it can reduce the crosstalk between different functional circuits; and there are also networks like filters in circuits designed for impedance matching, phase characteristic conversion, and equalizing the output power of a certain network . [0003] In order to make full and effective use of spectrum resources, multi-passband systems are widely used in signal transmitting and receiving systems, such as WLAN dual-mode transceiver components and WCDMA / GSM dual-mode RF front-ends. Multi-passband system filtering can b...

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 Applications(China)
IPC IPC(8): H01P1/203
CPCH01P1/20381
Inventor 张鸣霞
Owner NANJING PANDA ELECTRONICS
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