CN206134898U - Compact ultra wide band microstrip filter - Google Patents
Compact ultra wide band microstrip filter Download PDFInfo
- Publication number
- CN206134898U CN206134898U CN201620357768.9U CN201620357768U CN206134898U CN 206134898 U CN206134898 U CN 206134898U CN 201620357768 U CN201620357768 U CN 201620357768U CN 206134898 U CN206134898 U CN 206134898U
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- CN
- China
- Prior art keywords
- transmission line
- wide band
- filter
- ultra wide
- band microstrip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model provides a compact ultra wide band microstrip filter is provided with left and right symmetrical patterns's metallic wiring on metal surface, this metallic wiring is provided with left and right symmetrical patterns's metallic wiring, and this metallic wiring includes " worker " type multi -mode transmission line of left and right symmetry and the loading transmission line of opening a way in the terminal, the source end and the load end loading transmission line that still include left and right symmetry. The utility model provides a bulky, stopband rejection is poor and the loss the is big shortcoming of traditional ultra wide band microstrip filter.
Description
Technical field
This utility model is related to a kind of low-loss micro-strip filter of compact conformation, specifically a kind of compact ultra-wide
Band microstrip filter.
Background technology
In ultra-wideband communication system, ultra-wide band filter for filter noise and out-of-band interference signal play it is indispensable
Effect.At present the method for designing of ultra-wide band filter is mainly based upon multimode resonator technology and is cascaded based on high-pass and low-pass filter
Two methods of technology.Based on the ultra-wide band filter compact conformation that multimode resonator is realized, but filter passband and stopband
Performance is not easy to adjust control.The ultra-wide band filter volume for cascading realization by high-pass and low-pass filter is larger, and structure is not tight enough
Gather.
The ultra-wide band filter that newest short-circuit minor matters line loading band filter is formed has bandwidth of operation width, structure letter
Single advantage.Can meet the demand of high selectivity by increasing short-circuit minor matters number, but this filter parasitic passband away from
Close to working band, and structure is not compact enough.
The content of the invention
The purpose of this utility model is to provide a kind of compact super wide band microstrip filter, with compact conformation, stopband
The characteristics of inhibition is good and consumes energy little.
This utility model includes the metal surface of wave filter and the dielectric layer of metal back layer and centre, the technology for being adopted
Scheme is：The metallic circuit of left and right symmetrical pattern is provided with metal surface, the metallic circuit is left and right right including one
Claim the multimode line of " work " type setting and the loaded transmission line of open-end；Also including the input and output side of two ends " one " type
Port transmission line and source and load end loaded transmission line.
The beneficial effects of the utility model are：Compared with existing ultra-wide band filter, wave filter of the present utility model
Structure is the mixed structure of multimode line and loaded transmission line.Due to the setting using such a population structure, formed
Resonant element constitute a resonant element with multiple modes of resonance, when using, by corresponding construction parameter, such as plus
Carry length, the adjustment of input source and load end loaded transmission line position etc. of transmission line, it is possible to achieve the wave filter of ultra broadband
Characteristic.Compared with prior art, with compact dimensions, the distinguishing feature that return loss is low, harmonic suppression effect is good.
Description of the drawings
With reference to the accompanying drawings and examples the utility model is described in further detail.
Fig. 1 is this utility model structural representation.
Fig. 2 is this utility model frequency characteristic schematic diagram.
In figure：1st, metal surface, 2, dielectric layer, 3, metal back layer, 4, input/output port, 5, source and load end loading
Transmission line, 6, multimode line, 7, loaded transmission line.
Specific embodiment
Fig. 1, shown in 2：The wave filter combined by the dielectric layer 2 of metal surface 1 and metal back layer 3 and centre,
The metallic circuit of left and right symmetrical pattern is provided with metal surface 1, the metallic circuit includes that left and right symmetrical " work " type is arranged
Multimode line 6 and open-end loaded transmission line 7；Also comprising source and load end loaded transmission line 5 and input and output
Port 4.
Shown in Fig. 2：It is shown that the S parameter of wave filter design of Simulation in figure.Find out there is a frequency model from S11 curves
The passband from 3.1GHz to 10.6GHz is enclosed, the return loss of passband reaches more than 15dB, illustrates wave filter reality in passband
Good matching properties are showed.Find out from S21 curves, stopband suppression level reaches more than 20dB, with preferably harmonics restraint
Characteristic.
In being embodied as, controlled by designing and adjusting the length of the length of coupling multimode transmission line 6 and loaded transmission line 7
The resonant frequency characteristic of wave filter processed；By control source and load end loaded transmission line 5 position and with input/output port 4
Spacing adjusting the power of energy coupling, the frequency characteristic being finally reached shown in Fig. 2.
Claims (1)
1. a kind of compact super wide band microstrip filter, including the metal surface of wave filter（1）And metal back layer（3）And it is middle
Dielectric layer（2）, it is characterised in that：In metal surface（1）On be provided with the metallic circuit of left and right symmetrical pattern, the metal wire
Road includes the multimode line that left and right symmetrical " work " type is arranged（6）With the loaded transmission line of open-end（7）And source and negative
Carry end loaded transmission line（5）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620357768.9U CN206134898U (en) | 2016-04-26 | 2016-04-26 | Compact ultra wide band microstrip filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620357768.9U CN206134898U (en) | 2016-04-26 | 2016-04-26 | Compact ultra wide band microstrip filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206134898U true CN206134898U (en) | 2017-04-26 |
Family
ID=58560530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620357768.9U Expired - Fee Related CN206134898U (en) | 2016-04-26 | 2016-04-26 | Compact ultra wide band microstrip filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206134898U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113300063A (en) * | 2021-06-29 | 2021-08-24 | 上海海事大学 | Four-passband filter topological structure based on transverse bow-shaped connection and interdigital coupling structure |
-
2016
- 2016-04-26 CN CN201620357768.9U patent/CN206134898U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113300063A (en) * | 2021-06-29 | 2021-08-24 | 上海海事大学 | Four-passband filter topological structure based on transverse bow-shaped connection and interdigital coupling structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170426 Termination date: 20180426 |