Low-pass band-pass five-duplex based on novel frequency separation structure

A technology of frequency separation and pentplexer, applied in waveguide devices, electrical components, circuits, etc., can solve problems such as lack of performance, lack of passband characteristics of duplexers, etc., to improve stopband suppression and widen stopband range , The effect of center frequency controllable

Inactive Publication Date: 2016-04-20
SOUTH CHINA UNIV OF TECH
View PDF6 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing low-pass-band-pass multiplexers only contain two channels, and are still lacking in performance.
[0005] The data shows that in 2002, Yo-ShenLin et al. published an article entitled "Lumped-ElementCoplanar-WaveguideDiplexer" at

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
  • Low-pass band-pass five-duplex based on novel frequency separation structure
  • Low-pass band-pass five-duplex based on novel frequency separation structure
  • Low-pass band-pass five-duplex based on novel frequency separation structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0042] A multiplexer is a radio frequency device that can divide one signal into multiple signals with different frequencies, or combine multiple signals with different frequencies into one signal. It mainly works on the radio frequency front end of the communication system, and is used to separate or synthesize signals of a specific frequency for processing, and to filter out interference signals of other frequencies. In some mixed-frequency communication systems, it is usually necessary to separate the intermediate frequency and local oscillator frequency, so the multiplexer with low-pass channel has important research significance. At present, there are very few studies on planar microstrip low-pass-band-pass multiplexers. The difficulty of the research is that a wide-band open-circuit condition must be achieved, that is, the band-pass must be guaranteed within the range from zero frequency to approximately the cut-off frequency of the low-pass filter. The channel is approx...

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 low-pass band-pass five-duplex based on a novel frequency separation structure, which achieves through a microstrip circuit, and comprises a low-pass wave filter (T1) and four different center frequencies of band-pass wave filters (T2,T3,T4 and T5). The low-pass band-pass five-duplex based on the novel frequency separation structure can adjust a transmission zero on a band-pass side of the low-pass wave filter in a certain range by leading in a stepped impedance side line, thereby improving selectivity. The low-pass band-pass five-duplex based on the novel frequency separation structure can generate attenuation poles outside a low-pass wave filter band pass by leading in a defected ground structure, and greatly enlarges a stopband suppression range of a wave filter. The low-pass band-pass five-duplex based on the novel frequency separation structure can conveniently increase the channel number of multiple duplexes by using the novel frequency separation structure, and can control the center frequency of the band-pass channels. The low-pass band-pass five-duplex based on the novel frequency separation structure greatly reduces the effect of mutual interference between various channels by being excellently matched with the network, and enables various ports to have excellent isolation. The low-pass band-pass five-duplex based on the novel frequency separation structure has the advantages that the low-pass band-pass five-duplex based on the novel frequency separation structure is excellent in frequency selectivity, high out-of-band rejection, high isolation, small volume and simple and reliable structure and the like.

Description

technical field [0001] The invention relates to the technical field of planar microstrip filters, in particular to a low-pass-band-pass quinteplexer based on a novel frequency separation structure. Background technique [0002] In recent years, the communication industry has developed more and more rapidly. Various communication innovation technologies are widely used in military or civilian fields, such as satellite communication, mobile communication, etc., which provide great convenience for our life. With the emergence of various communication standards, such as GSM, CDMA, WCDMA, TD-LTE, WiFi, WiMAX, etc., people need to divide more and more frequency bands and finer and finer. With the continuous increase of communication frequency bands, the sensitivity requirements of receivers are also getting higher and higher. Therefore, how to make the signals between channels not interfere with each other has become a key technical issue in the design of the communication syste...

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 陈付昌陈健锋
Owner SOUTH CHINA UNIV OF TECH
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