CN104979607A - Microstrip filter designed on the basis of a symmetric double-T-shaped microstrip resonator - Google Patents
Microstrip filter designed on the basis of a symmetric double-T-shaped microstrip resonator Download PDFInfo
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- CN104979607A CN104979607A CN201310617599.9A CN201310617599A CN104979607A CN 104979607 A CN104979607 A CN 104979607A CN 201310617599 A CN201310617599 A CN 201310617599A CN 104979607 A CN104979607 A CN 104979607A
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- microstrip
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Abstract
The invention discloses a microstrip filter designed on the basis of a symmetric double-T-shaped microstrip resonator. The microstrip filter is characterized by comprising a metallic microstrip chip (2) formed in the top surface of a dielectric board (1), and a metallic grounding plate (3) formed in the bottom surface of the dielectric board (1). The metallic microstrip chip mainly comprises a resonant cavity (4). The microstrip filter is designed on the basis of the characteristic of the double-T-shaped resonator, may separate signals in different frequencies, and is compact in structure, easy to process, wide in application range, low in cost, high in performance, and expected to be used in microstrip communication.
Description
Technical field
The present invention designs a kind of filter, the microstrip filter that the micro-strip resonantor specifically formed based on symmetrical double-T designs.
Background technology
Be epoch for communication now, flourish along with wireless communication system and mobile phone telephony, wireless telecommunications contact the life of these people closely, affect the life of these people.The fast development of wireless communication technique, wireless device is to miniaturization.
But due to antenna in traditional sense and filter be separately design, which increase system bulk and design cost, easily cause the mismatch between parts simultaneously, reduce the efficiency of system.
Micro-strip resonantor plays a very important role in microwave system, and it is the important component part of microstrip filter and microstrip antenna.The advantage of microstrip filter has band wide, decay large and parasitic passband etc.
Summary of the invention
The present invention utilizes the resonance characteristic of fractal structure, its objective is to design a kind of microstrip filter can isolating different frequency microwave signal.
The technical solution adopted in the present invention:
Based on the microstrip filter of the micro-strip resonantor design that symmetrical double-T is formed, it is characterized in that, comprise the metal micro-strip paster (2) and metal ground plate (3) that are formed at dielectric-slab (1) upper and lower surface, the top of dielectric-slab (1) is metal micro-strip paster (2), the below of dielectric-slab (1) is metal ground plate (3), and described metal micro-strip paster mainly comprises resonant cavity (4).
The microstrip filter of the described micro-strip resonantor design formed based on symmetrical double-T, is characterized in that two symmetrical T-shaped.
Described microstrip filter, is characterized in that the shape-designing of microband paste.
Described novel microstrip filter, is characterized in that, the design of resonant cavity.
The present invention has following advantage and characteristic relative to prior art:
(1) compact conformation, size are little, are easy to processing, and make low price.
(2) by changing the width of paster, resonance frequency can be changed.
(3) by changing T-shaped width, the quality index of micro-strip resonantor can be changed.
(4) filter characteristic is changed by changing T-shaped resonant cavity.
Accompanying drawing explanation
Fig. 1 is the basic structure stereogram of inventive antenna filter;
Fig. 2 is the basic structure front view of inventive antenna filter;
Fig. 3 is the basic structure end view of inventive antenna filter;
Embodiment
In recent years, a variety of to being designed with of filter, the effect of microstrip filter suppresses unwanted signal, makes it not by filter, only allow useful signal pass through.Microstrip filter based on micro-strip resonantor has features such as being with wide and high decay, and is easy to processing, and applied widely, performance is high.
Below in conjunction with accompanying drawing, concrete structure of the present invention is further described.
As shown in Figure 1, microstrip filter of the present invention.Wherein, dielectric-slab upper surface is metal micro-strip paster 2, the lower surface ground plate 3 of dielectric-slab.Described metal micro-strip paster 2 comprises multimode cavity 4, and its resonant cavity T-shapedly to form by two.
Fig. 2 and Fig. 3 is the side view of microstrip filter.
The operation principle of this filter is basic micro-strip resonantor and Filter Principle, metal micro-strip paster 2 resonant cavity 4(two T-type structure two parts compositions of dielectric-slab upper surface).That this filter connects is common driving source (50 Ω).
Arrange by this structure different parameters the characteristic realizing antenna and filter, along with the change of some structural parameters (length of side of T structure) of filter, the frequency of resonator is in change, and the quality index of resonator is also in change.
Claims (2)
1. the microstrip filter that the micro-strip resonantor formed based on symmetrical double-T designs, it is characterized in that, comprise the metal micro-strip paster (2) and metal ground plate (3) that are formed at dielectric-slab (1) upper and lower surface, the top of dielectric-slab (1) is metal micro-strip paster (2), the below of dielectric-slab (1) is metal ground plate (3), and described metal micro-strip paster mainly comprises resonant cavity (4).
2. the microstrip filter of the micro-strip resonantor design formed based on symmetrical double-T according to claim 1, is characterized in that two symmetrical T-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310617599.9A CN104979607A (en) | 2014-04-07 | 2014-04-07 | Microstrip filter designed on the basis of a symmetric double-T-shaped microstrip resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310617599.9A CN104979607A (en) | 2014-04-07 | 2014-04-07 | Microstrip filter designed on the basis of a symmetric double-T-shaped microstrip resonator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104979607A true CN104979607A (en) | 2015-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310617599.9A Pending CN104979607A (en) | 2014-04-07 | 2014-04-07 | Microstrip filter designed on the basis of a symmetric double-T-shaped microstrip resonator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104979607A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299561A (en) * | 2016-09-12 | 2017-01-04 | 电子科技大学 | A kind of low pass filter utilizing split ring |
| CN106912192A (en) * | 2017-03-31 | 2017-06-30 | 南京信息工程大学 | A kind of microwave absorber of frequency-adjustable |
-
2014
- 2014-04-07 CN CN201310617599.9A patent/CN104979607A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299561A (en) * | 2016-09-12 | 2017-01-04 | 电子科技大学 | A kind of low pass filter utilizing split ring |
| CN106912192A (en) * | 2017-03-31 | 2017-06-30 | 南京信息工程大学 | A kind of microwave absorber of frequency-adjustable |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151014 |