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

Radio frequency filter capable of automatically sensing and rapidly regulating frequency and bandwidth

A radio frequency filter and rapid adjustment technology, applied in waveguide-type devices, electrical components, circuits, etc., can solve the problem that the tunable speed is difficult to meet the requirements of fast tuning, and the tunable characteristics are general, and achieve fast tuning and good filtering characteristics. Effect

Inactive Publication Date: 2012-07-25
ZHEJIANG TEXTILE & FASHION COLLEGE
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the tunable filters currently proposed are comb-shaped and cochin-shaped structures, and a varactor diode is added at the open end. The tunable characteristics are general, and they belong to single-mode operation.
In addition, the tunable speed is also difficult to meet the requirements of fast tuning such as cognitive radio

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
  • Radio frequency filter capable of automatically sensing and rapidly regulating frequency and bandwidth
  • Radio frequency filter capable of automatically sensing and rapidly regulating frequency and bandwidth
  • Radio frequency filter capable of automatically sensing and rapidly regulating frequency and bandwidth

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0018] A radio frequency filter that can automatically sense and quickly adjust frequency and bandwidth, including a metal cavity 1, a first connector 2 and a second connector 3, the first connector 2 is set on one side of the metal cavity 1, the second The second connector 3 is arranged on the other side of the metal cavity 1. A dielectric substrate is arranged in the metal cavity 1. The bottom surface of the dielectric substrate is covered with copper and grounded. The front of the dielectric substrate is provided with a first feed unit 4 and a second Two feed units 5, the first feed unit 4 is connected to the first connector 2, the second feed unit 5 is connected to the second connector 3, and the first feed unit 4 and the second feed unit 5 are arranged There is a resonant unit combination, the resonant unit combination is coupled with the...

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 radio frequency filter capable of automatically sensing and rapidly regulating frequency and bandwidth, comprising a metal cavity, wherein a first connector is arranged at one side of the metal cavity; a second connector is arranged at the other side of the metal cavity; a medium substrate is arranged in the metal cavity; the bottom of the medium substrate is covered with copper and grounded; the front side of the medium substrate is provided with a first feed unit and a second feed unit; the first feed unit is connected to the first connector; the second feed unit is connected to the second connector; a resonant unit combination is arranged between the first feed unit and the second feed unit; the resonant unit combination is coupled with the first feed unit and the second feed unit; a variable capacitance diode combination is arranged on the resonant unit combination; and the variable capacitance diode combination is connected to a control unit. The radio frequency filter has the advantages of capabilities of realizing rapid tuning of a filter, dual-mode characteristic of a resonant unit and applying fewer resonant units to realize better filtering characteristics.

Description

technical field [0001] The invention relates to a radio frequency filter, in particular to a radio frequency filter which can automatically perceive and quickly adjust frequency and bandwidth. Background technique [0002] With the rapid development of mobile communication technology, there are more and more mobile communication systems. For example, the currently widely used wireless networks include GSM, CDMA1.X, DCS, CDMA2000, WCDMA, TD-SCDMA, WiMax and subsequent LTE networks. etc. Due to the different frequencies and standards used, new wireless access equipment must be re-planned and built every time a network is built, which greatly wastes equipment investment. Due to interference and other reasons, site selection is becoming more and more difficult. In order to save the operator's network coverage cost and construction time, software radio technology is proposed and applied to the current mobile communication field. Software radio can switch different communication ...

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): H01P1/208
Inventor 张海力陈罡沈博侃杨伟超
Owner ZHEJIANG TEXTILE & FASHION COLLEGE
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