CN105762452A - Improved multifunctional filter - Google Patents
Improved multifunctional filter Download PDFInfo
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- CN105762452A CN105762452A CN201410796933.6A CN201410796933A CN105762452A CN 105762452 A CN105762452 A CN 105762452A CN 201410796933 A CN201410796933 A CN 201410796933A CN 105762452 A CN105762452 A CN 105762452A
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- filter
- multifunctional filter
- improved multifunctional
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Abstract
The invention relates to an improved multifunctional filter. The improved multifunctional filter is characterized in that the filter includes a medium board (1), a metal micro-strip paster (2), a metal grounding board (3), a resonance cavity (4) and a fractal structure (5); the metal micro-strip paster (2) is disposed on the upper surface of the medium board (1); the metal grounding board (3) is disposed on the lower surface of the medium board (1); the fractal structure (5) is a nested structure composed of a rhombus and a square. According to the invention, the resonance characteristics of the annular resonance structure and the fractal structure are utilized, the comprehensive model designing an antenna and a filter integrally has characteristics of small size, compact structure, low cost and easy manufacture and the like. The improved multifunctional filter is expected to be applied widely in the technical field of wireless communication.
Description
Technical field
The present invention relates to the antenna technology in wireless communication technology field and wave filter technology, particularly a kind of volume is little, the multifunctional filter of the improvement of compact conformation, low cost.
Background technology
Traditional antenna and wave filter are independent design, and volume is big, cost is high, and easily cause mismatch between parts, and efficiency is low.Along with the fast development of Modern wireless communication technology, the requirement of radio and electronic message unit is constantly increased, performance requirement should be met, ensure that cost is low, volume is little again.
In recent years, though Chinese scholars proposes new mentality of designing at wireless communication technology field, but still multifunction and the miniature requirement of Modem radio equipment and electronic message unit can not be met, hinder the development process of radio communication technology to a certain extent.Such as, in October, 2002, on EuropeanMicrowaveConference (european microwave meeting), Queudet et al. proposes the thinking of wave filter Yu single-band antenna collaborative design in the same plane, but under this new approaches, antenna-filter apparatus still volume of design is relatively big, multifunction and degree of miniaturization not high.
Summary of the invention
It is an object of the invention to provide the multifunctional filter of a kind of low cost, high-performance, improvement that volume is little, this device utilizes the resonance characteristic of ring resonance structure and fractal structure so that it is have antenna performance and filter characteristic simultaneously.
The technical solution adopted in the present invention:
The multifunctional filter improved, it is characterized in that: include dielectric-slab (1), metal micro-strip paster (2), metal ground plate (3), resonator cavity (4) and fractal structure (5), metal micro-strip paster (2) is positioned at the upper surface of dielectric-slab (1), metal ground plate (3) is positioned at the lower surface of dielectric-slab (1), and fractal structure (5) is rhombus and foursquare nested structure.
The multifunctional filter of described improvement, is characterized in that: resonator cavity (4) includes rhombus and foursquare cavity body structure.
The multifunctional filter of described improvement, is characterized in that: in conjunction with antenna resonant cavity.
Present invention have an advantage that
(1) volume is little, compact conformation, cost are low, and is prone to processing.
(2) while the center frequency point of fixed filters passband, it is possible to launch frequency by changing fractal iteration number of times correction antenna.
(3) by changing rhombus and the size of square cavity body structure, or the size of the dielectric constant of dielectric-slab is changed, it is possible to adjust the size of the passband of antenna and the position of center frequency point.
(4) by changing circular resonant cavity, thus it is possible to vary antenna and filter characteristic.
Accompanying drawing explanation
Fig. 1 is the basic structure axonometric chart of the multifunctional filter of this improvement；
Fig. 2 is the basic structure front view of the multifunctional filter of this improvement；
Detailed description of the invention
The multifunctional filter improved, it it is the resonance characteristic utilizing ring resonance structure and fractal structure, by the aggregative model of antenna and wave filter collaborative design, have that volume is little, cost is low, be prone to processing and the feature such as applied widely, be expected to be widely used at wireless communication technology field.
The multifunctional filter of described improvement, its basic structure axonometric chart is as shown in Figure 1, including dielectric-slab (1), metal micro-strip paster (2), metal ground plate (3), resonator cavity (4) and fractal structure (5), metal micro-strip paster (2) is positioned at the upper surface of dielectric-slab (1), metal ground plate (3) is positioned at the lower surface of dielectric-slab (1), and fractal structure (5) is rhombus and foursquare nested structure.The radius of r1, r2 and r3 respectively three loop configuration from inside to outside, d1, d2, d3 are followed successively by the distance between annulus from inside to outside, d4 is outermost annulus distance separately, d5 is wave filter feed port length, d6 is antenna feed end microstrip line length, d7 is two-port coupled section length, and l1 is the length of side of rhombus, and l2 is the foursquare length of side.
The multifunctional filter of described improvement, its basic structure subjectivity figure is as in figure 2 it is shown, h1 is the thickness of medium, and h2 is the thickness on metal patch and floor.
The multifunctional filter of described improvement, its operation principle is basic antenna and Filter Principle, and the metal micro-strip paster (2) of dielectric-slab (1) upper surface is made up of resonator cavity (4) and fractal structure (5) two parts.That the multifunctional filter of this improvement connects is common driving source (50 Ω).
Claims (2)
1. the multifunctional filter improved, it is characterized in that: include dielectric-slab (1), metal micro-strip paster (2), metal ground plate (3), resonator cavity (4) and fractal structure (5), metal micro-strip paster (2) is positioned at the upper surface of dielectric-slab (1), metal ground plate (3) is positioned at the lower surface of dielectric-slab (1), and fractal structure (5) is rhombus and foursquare nested structure.
2. the multifunctional filter of improvement according to claim 1, is characterized in that: resonator cavity (4) includes rhombus and foursquare cavity body structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410796933.6A CN105762452A (en) | 2014-12-19 | 2014-12-19 | Improved multifunctional filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410796933.6A CN105762452A (en) | 2014-12-19 | 2014-12-19 | Improved multifunctional filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105762452A true CN105762452A (en) | 2016-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410796933.6A Pending CN105762452A (en) | 2014-12-19 | 2014-12-19 | Improved multifunctional filter |
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| CN (1) | CN105762452A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876899A (en) * | 2017-03-09 | 2017-06-20 | 厦门大学嘉庚学院 | Straight-flanked ring Cantor composite fractal antenna |
-
2014
- 2014-12-19 CN CN201410796933.6A patent/CN105762452A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876899A (en) * | 2017-03-09 | 2017-06-20 | 厦门大学嘉庚学院 | Straight-flanked ring Cantor composite fractal antenna |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160713 |