Design method and circuit of a dual-band non-uniform transmission line impedance converter

A technology of impedance converter and design method, applied in the direction of impedance network, electrical components, multi-terminal pair network, etc., can solve the problems of large physical size, parasitic passband, large insertion loss, etc., and achieve small reflection coefficient, small physical size, Bandwidth effect

Active Publication Date: 2020-11-06
汪茂稳
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, dual-band impedance transformers based on uniform transmission lines often have defects such as parasitic passbands, large insertion loss, narrow bandwidth, and large physical size, which greatly restricts their applications.

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
  • Design method and circuit of a dual-band non-uniform transmission line impedance converter
  • Design method and circuit of a dual-band non-uniform transmission line impedance converter
  • Design method and circuit of a dual-band non-uniform transmission line impedance converter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. The following are only preferred embodiments and do not constitute a limitation to the protection scope of the present invention.

[0035] see figure 1 , is a flowchart of a design method for a dual-band non-uniform transmission line impedance transformer provided by the present invention. In this embodiment, the design method of a dual-band non-uniform transmission line impedance converter includes the following steps:

[0036] S1. Expand the characteristic impedance of each non-uniform transmission line of the impedance transformer with a truncated Fourier and obtain a normalized expression

[0037]

[0038] Among them, i is the distinguishing subscript of different circuits, A~E is the distinguishing subscript of each non-uniform transmission line in a circuit, Z 0 is t...

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 circuit and a design method for a dual-band non-uniform transmission line impedance converter. The method optimizes the structural size of an impedance converter by means of a mathematical optimization model, changes the corresponding transmission line of the impedance converter into a non-uniform transmission line, and causes the width of the transmission line to continuously change in a longitudinal direction, thereby realizing a smooth transmission of electromagnetic wave signals on the transmission line. The circuit comprises a T-type impedance converter, an n-type impedance converter and an H-type impedance converter. The impedance converter implemented by means of the design method has a small reflection coefficient, large harmonic suppression, small insertion loss, a large bandwidth, a physical size smaller than that of a conventional uniform transmission line impedance converter, and a more flexible design. Moreover, the impedance converter can be used for matching any plural number of terminal impedances without any centralized reactance element, and consumes few resources and is widely applicable.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a design method and circuit of a dual-band non-uniform transmission line impedance converter. Background technique [0002] Microwave technology is widely used in industry, agriculture, remote sensing, military and other industries. In order to meet the development requirements of civil communications, electronic detectives and electronic countermeasures, microwave communication systems are developing in the direction of high performance, miniaturization, broadband and multi-band. As a waveguide system for transmitting electromagnetic waves, the microwave transmission line has always been the most basic and important part of all microwave components. However, most of the current research focuses on the direction of the uniform transmission line, mainly because the characteristic parameters of the uniform transmission line can be determined by the corresponding These parame...

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): H03H7/38
CPCH03H7/38
Inventor 汪茂稳闵国新周新辉徐铭罗中良
Owner 汪茂稳
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap