CN107425240A - A kind of wave filter with multiple loop configuration - Google Patents
A kind of wave filter with multiple loop configuration Download PDFInfo
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- CN107425240A CN107425240A CN201710470104.2A CN201710470104A CN107425240A CN 107425240 A CN107425240 A CN 107425240A CN 201710470104 A CN201710470104 A CN 201710470104A CN 107425240 A CN107425240 A CN 107425240A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
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Abstract
The invention discloses a kind of wave filter with multiple loop configuration, including two and above resonator are set between input and output end, including input and output end；The quantity of resonator is even number；Resonator includes the first high impedance section, the first Low ESR section, the second high impedance section, the second Low ESR section and the 3rd high impedance section being sequentially connected；First high impedance section, the first Low ESR section, the second high impedance section, the second Low ESR section and the 3rd high impedance section form the loop configuration with an opening, and opening, between the first high impedance section and the 3rd high impedance section, the first high impedance section, the first Low ESR section, the second high impedance section, the total length of the second Low ESR section and the 3rd high impedance section use microwave wavelength.A kind of wave filter with multiple loop configuration of the present invention, makes said structure by resonator, realizes and do not need ground hole, while coupling effect is fabulous, and then forms and be easily integrated and the wave filter of high out-of-side rejection.
Description
Technical field
The present invention relates to field of microwave communication, and in particular to a kind of wave filter with multiple loop configuration.
Background technology
Microwave filter, for filtering or separating the element of different microwave frequency signals.Microwave filter divides low pass, height
Logical, band logical and with four types of resistance (high pass commonly uses wide band bandpass filter replacement), their structure, parameter and design side
Method has marked difference because of indexs such as different working frequencies, frequency bandwidth, power capacities.In microwave circuit system, filtering
The performance of device has a great impact to the performance indications of circuit, therefore how to design one and have high performance wave filter, right
Design microwave circuit system tool has very important significance.Microstrip circuit has a small volume, many advantages, such as in light weight, bandwidth,
Be widely used in recent years in microwave circuit system, wherein with micro-strip do wave filter be its mainly using one of.
But existing microstrip filter, when using ground hole, micro-strip cabling is unfavorable for integrating, without using ground hole
When, coupling effect is very poor, so as to cause Out-of-band rejection effect bad.
The content of the invention
The technical problems to be solved by the invention are existing microstrip filters, and when using ground hole, micro-strip cabling is not
Beneficial to integrated, during without using ground hole, coupling effect is very poor, so as to causing Out-of-band rejection effect bad, and it is an object of the present invention to provide
A kind of wave filter with multiple loop configuration, solves the above problems.
The present invention is achieved through the following technical solutions：
A kind of wave filter with multiple loop configuration, including input and output end, it is described including input and output
Two and above resonator are set between end；The quantity of the resonator is even number；The resonator includes the be sequentially connected
One high impedance section, the first Low ESR section, the second high impedance section, the second Low ESR section and the 3rd high impedance section；First high resistant
Anti- section, the first Low ESR section, the second high impedance section, the second Low ESR section and the 3rd high impedance section form the ring with an opening
Shape structure, and be open between the first high impedance section and the 3rd high impedance section, the first high impedance section, the first Low ESR
The total length of section, the second high impedance section, the second Low ESR section and the 3rd high impedance section uses microwave wavelength.
In the prior art, microstrip filter, when using ground hole, micro-strip cabling is unfavorable for integrating, without using ground connection
Kong Shi, coupling effect is very poor, so as to cause Out-of-band rejection effect bad.During present invention application, the first high impedance section, the first low-resistance
Anti- section, the second high impedance section, the second Low ESR section and the 3rd high impedance section constitute an all-wave length step electric impedance resonator, from
Coupling can be achieved without ground hole, and the coupling effect between adjacent resonator has significantly than common resonator
Lifting, and due to being open on the resonator, other theoretical according to quasi-elliptic function, not adjacent with resonator resonators
It can also realize and couple with the resonator, and limit is formed at each resonator, so as to further increase coupling effect, enter
And improve Out-of-band rejection.Resonator is made said structure by the present invention, is realized and is not needed ground hole, while coupling effect
It is fabulous, and then form and be easily integrated and the wave filter of high out-of-side rejection.
Further, the loop configuration of the adjacent resonator, opening direction are opposite；Between the adjacent resonator
Distance be 0.3~0.4mm.
During present invention application, inventor has found that by the loop configuration of adjacent resonator opening direction is on the contrary, and will be adjacent
The distance between resonator when being 0.3~0.4mm, wave filter reaches highest Out-of-band rejection.
Further, the width of the first high impedance section, the second high impedance section and the 3rd high impedance section is equal, and is
0.1~0.3mm.
Further, the width of the first Low ESR section and the second Low ESR section is equal, and is 0.6~0.8mm.
Further, the input is connected to the resonator nearest with input；The output end is connected to and exported
Hold nearest resonator.
The present invention compared with prior art, has the following advantages and advantages：
A kind of wave filter with multiple loop configuration of the present invention, makes said structure by resonator, realizes and be not required to
Ground hole is wanted, while coupling effect is fabulous, and then form and be easily integrated and the wave filter of high out-of-side rejection.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is schematic structural view of the invention.
Mark and corresponding parts title in accompanying drawing：
1- inputs, 2- output ends, 3- resonators, 31- the first high impedance sections, 32- the first Low ESR sections, 33- second are high
Impedance section, 34- the second Low ESR sections, the high impedance sections of 35- the 3rd.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment
As shown in figure 1, a kind of wave filter with multiple loop configuration of the present invention, including input 1 and output end 2, institute
State including setting two and above resonator 3 between input 1 and output end 2；The quantity of the resonator 3 is even number；It is described
Resonator 3 include be sequentially connected the first high impedance section 31, the first Low ESR section 32, the second high impedance section 33, the second Low ESR
The high impedance section 35 of section 34 and the 3rd；The first high impedance section 31, the first Low ESR section 32, the second high impedance section 33, second are low
The high impedance section 35 of impedance section 34 and the 3rd forms the loop configuration with an opening, and opening is located at the He of the first high impedance section 31
Between 3rd high impedance section 35；The first high impedance section 31, the first Low ESR section 32, the second high impedance section 33, the second low-resistance
The total length of anti-section 34 and the 3rd high impedance section 35 uses microwave wavelength.The loop configuration of the adjacent resonator 3, openings
To opposite；The distance between described adjacent resonator 3 is 0.3~0.4mm.The first high impedance section 31, the second high impedance
The width of the high impedance section 35 of section 33 and the 3rd is equal, and is 0.1~0.3mm.The first Low ESR section 32 and the second low-resistance
Anti- section 34 of width is equal, and is 0.6~0.8mm.The input 1 is connected to the resonator 3 nearest with input 1；It is described
Output end 2 is connected to the resonator 3 nearest with output end 2.
When the present embodiment is implemented, the first high impedance section 31, the first Low ESR section 32, the second high impedance section 33, the second low-resistance
Anti- section 34 and the 3rd high impedance section 35 constitute an all-wave length step electric impedance resonator, can be achieved without ground hole
Coupling, and the coupling effect between adjacent resonator 3 is substantially improved than common resonator, and due to the resonator 3
On be open, theoretical according to quasi-elliptic function, other not adjacent with the resonator 3 resonators 3 can also be with the resonator 3
Coupling is realized, and limit is formed at each resonator 3, so as to further increase coupling effect, and then is improved with outer suppression
System.Resonator is made said structure by the present invention, is realized and is not needed ground hole, while coupling effect is fabulous, and then is formed
It is easily integrated and the wave filter of high out-of-side rejection.Inventor is had found the loop configuration of adjacent resonator 3, opening direction
On the contrary, and when being 0.3~0.4mm by the distance between adjacent resonator 3, wave filter reaches highest Out-of-band rejection.
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further
Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include
Within protection scope of the present invention.
Claims (5)
1. a kind of wave filter with multiple loop configuration, including input (1) and output end (2), it is characterised in that the bag
Include two and above resonator (3) of setting between input (1) and output end (2)；The quantity of the resonator (3) is even number；
The resonator (3) includes the first high impedance section (31), the first Low ESR section (32), the second high impedance section being sequentially connected
(33), the second Low ESR section (34) and the 3rd high impedance section (35)；The first high impedance section (31), the first Low ESR section
(32), the second high impedance section (33), the second Low ESR section (34) and the 3rd high impedance section (35) form the ring with an opening
Shape structure, and be open between the first high impedance section (31) and the 3rd high impedance section (35)；The first high impedance section (31),
First Low ESR section (32), the second high impedance section (33), the total length of the second Low ESR section (34) and the 3rd high impedance section (35)
Using microwave wavelength.
2. a kind of wave filter with multiple loop configuration according to claim 1, it is characterised in that described adjacent humorous
Shake the loop configuration of device (3), opening direction is opposite；The distance between described adjacent resonator (3) is 0.3~0.4mm.
A kind of 3. wave filter with multiple loop configuration according to claim 1, it is characterised in that first high resistant
The width of anti-section (31), the second high impedance section (33) and the 3rd high impedance section (35) is equal, and is 0.1~0.3mm.
A kind of 4. wave filter with multiple loop configuration according to claim 1, it is characterised in that first low-resistance
The width of anti-section (32) and the second Low ESR section (34) is equal, and is 0.6~0.8mm.
A kind of 5. wave filter with multiple loop configuration according to claim 1, it is characterised in that the input
(1) it is connected to and the nearest resonator (3) of input (1)；The output end (2) is connected to and the nearest resonance of output end (2)
Device (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710470104.2A CN107425240A (en) | 2017-06-20 | 2017-06-20 | A kind of wave filter with multiple loop configuration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710470104.2A CN107425240A (en) | 2017-06-20 | 2017-06-20 | A kind of wave filter with multiple loop configuration |
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| Publication Number | Publication Date |
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| CN107425240A true CN107425240A (en) | 2017-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710470104.2A Pending CN107425240A (en) | 2017-06-20 | 2017-06-20 | A kind of wave filter with multiple loop configuration |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5485165A (en) * | 1994-08-15 | 1996-01-16 | The United States Of America As Represented By The Secretary Of The Army | Broadband high efficiency full wave open coaxial stub loop antenna |
| CN1523780A (en) * | 2003-02-21 | 2004-08-25 | 清华大学 | Coupling structure of high-temperature superconductive filter for adjusting-free satellite communication and making process |
| CN202094255U (en) * | 2011-06-10 | 2011-12-28 | 河海大学常州校区 | Triple-band band-pass filter based on hairpin resonator |
| TW201639228A (en) * | 2015-04-15 | 2016-11-01 | Univ Kun Shan | Miniaturized dual-band duplexer |
| CN205680768U (en) * | 2016-06-27 | 2016-11-09 | 成都信息工程大学 | Micro-strip open loop wave filter |
-
2017
- 2017-06-20 CN CN201710470104.2A patent/CN107425240A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5485165A (en) * | 1994-08-15 | 1996-01-16 | The United States Of America As Represented By The Secretary Of The Army | Broadband high efficiency full wave open coaxial stub loop antenna |
| CN1523780A (en) * | 2003-02-21 | 2004-08-25 | 清华大学 | Coupling structure of high-temperature superconductive filter for adjusting-free satellite communication and making process |
| CN202094255U (en) * | 2011-06-10 | 2011-12-28 | 河海大学常州校区 | Triple-band band-pass filter based on hairpin resonator |
| TW201639228A (en) * | 2015-04-15 | 2016-11-01 | Univ Kun Shan | Miniaturized dual-band duplexer |
| CN205680768U (en) * | 2016-06-27 | 2016-11-09 | 成都信息工程大学 | Micro-strip open loop wave filter |
Non-Patent Citations (2)
| Title |
|---|
| ELENA A. SEMOUCHKINA: "FDTD Study of Resonance Processes in Metamaterials", 《IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES》 * |
| 李家林: "Ka频段新型带通滤波器的设计", 《全国微波毫米波会议》 * |
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Application publication date: 20171201 |
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