CN206059602U - A kind of millimeter waveguide high pass filter - Google Patents
A kind of millimeter waveguide high pass filter Download PDFInfo
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- CN206059602U CN206059602U CN201621015858.6U CN201621015858U CN206059602U CN 206059602 U CN206059602 U CN 206059602U CN 201621015858 U CN201621015858 U CN 201621015858U CN 206059602 U CN206059602 U CN 206059602U
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- waveguide
- pass filter
- high pass
- millimeter
- shaped
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Abstract
This utility model discloses a kind of millimeter waveguide high pass filter, it is characterised in that：Which includes two rectangular waveguides positioned at two ends, and positioned at middle S-shaped waveguide；The rectangular waveguide and S-shaped waveguide are connected by transition structure, and turning structure of the transition structure for zigzag, the turning structure vertical direction have multiple steps；The rectangular waveguide port cross-sectional product is more than S-shaped waveguide port sectional area.Rectangular waveguide of this utility model input and output for standard, middle to realize ending low end frequency signal by the waveguide of one section of S-shaped, high-side signal passes through.As the high pass filter does not have the cavity resonator structure of normal bandpass filters, therefore very little is lost, and requirement on machining accuracy is low.And size is little, simple structure is easily worked, and is adapted to be widely used in the front end of millimeter wave electronic system.
Description
Technical field
This utility model belongs to electronic communication technology field, and more particularly to a kind of waveguide for working in millimeter wave frequency band is high
Bandpass filter.
Background technology
High pass filter is that a kind of frequency response is low cut, and the high-end wave filter by form widely applies to
In various communications or radar system.In millimeter wave frequency band, the high pass filter of waveguide form is widely applied to low local oscillator
Electronic system front end, for filtering the reradiation of local oscillation signal and the suppression to image frequency signal.Because wave filter should
For front end, it is desirable to the wave filter preferably suppress having while, especially emphasize the requirement of filter with low insertion loss.
High pass filter typically adopts the comb line filter form of suspended stripline filter form or ultra broadband at present
Design, but the high pass filter of both forms is all suitable only for compared with low-frequency range.In millimeter wave frequency band, above two method is all
It is inapplicable, because on the one hand small-sized, process extremely difficult；Another aspect Insertion Loss is big, it is impossible to meet wanting for millimeter-wave systems
Ask.In millimeter wave frequency band, high pass filter is substituted using the waveguide bandpass filter of ultra broadband typically all.But ultra broadband
If the no zero point of waveguide bandpass filter, Out-of-band rejection are not good enough；If using band zero point design, broadband filter band
Inside it is easy to understand the performance of severe exacerbation system because higher mode produces resonance at resonance.Other waveguide bandpass filter pair
Processing dimension requirement is higher, thus cost is also of a relatively high.
The content of the invention
This utility model purpose is the defect for existing high pass filter, there is provided a kind of filter with low insertion loss, and machining accuracy will
Ask low, the waveguide high pass filter for working in millimeter wave frequency band of Out-of-band rejection.
This utility model for achieving the above object, is adopted the following technical scheme that：
A kind of millimeter waveguide high pass filter, it is characterised in that：Which includes two rectangular waveguides positioned at two ends, and position
In middle S-shaped waveguide；The rectangular waveguide and S-shaped waveguide are connected by transition structure, the transition structure turning for zigzag
Kinking structure, the turning structure vertical direction have multiple steps；The rectangular waveguide port cross-sectional product is more than S-shaped waveguide port
Sectional area.
Which is further characterized by：The S-shaped waveguide include by it is multiple turn through 180 degree structure connection multiple square waves
Lead.
Preferably：The S-shaped waveguide includes 5 rectangular waveguides, turns through 180 degree structure by 4 and is connected with each other.
For the ease of processing, the turning structure of the zigzag and structure of turning through 180 degree carry chamfering.
The millimeter waveguide high pass filter is the centrosymmetric structure with central point as axle center.
Rectangular waveguide of this utility model input and output for standard, it is middle to be realized to low side frequency by the waveguide of one section of S-shaped
Rate signal ends, and high-side signal passes through.Because there is no the cavity resonator structure of normal bandpass filters in the high pass filter, therefore
Loss very little, and requirement on machining accuracy is low.And size is little, simple structure is easily worked, and is adapted to be widely used in millimeter wave electronics
The front end of system.
Description of the drawings
Fig. 1 is this utility model structural representation.
Fig. 2 is frequency response curve of the present utility model.
Specific embodiment
A kind of millimeter waveguide high pass filter interior three-dimensional structure, including the input of high pass filter as shown in Figure 1
Mouth 1, the output port 2 of high pass filter, and S-shaped waveguide 4.The input port 1 and output port 2 are all standard rectangular waveguides
Input/output port.The rectangular waveguide and S-shaped waveguide 4 are connected by transition structure 3, and the transition structure 3 is zigzag
Turning structure, 3 vertical direction of the turning structure have multiple steps, and the transition structure 3 at input and output is completely the same.Institute
State S-shaped waveguide 4 include by 4 turn through 180 degree structure connection 5 rectangular waveguides.The S-shaped waveguide strobes, its length
Degree determines Out-of-band rejection degree, and the length of this section of waveguide is longer, then Out-of-band rejection is better.The rectangle of input port 1, output port 2
Waveguide port sectional area is accumulated more than 4 port cross-sectional of S-shaped waveguide.For the ease of processing, the turning structure and 180 degree of the zigzag
Turning structure carries chamfering.The millimeter waveguide high pass filter is the centrosymmetric structure with central point as axle center.
Fig. 2 is the frequency response curve of this utility model millimeter waveguide high pass filter, as seen from the figure, the millimeter wave ripple
Leading high pass filter has good Out-of-band rejection pair outside band, has preferable echo with interior.And size is little, simple structure, easily
Processing, is adapted to be widely used in the front end of millimeter wave electronic system.
Claims (5)
1. a kind of millimeter waveguide high pass filter, it is characterised in that：Which includes two rectangular waveguides positioned at two ends, and is located at
Middle S-shaped waveguide；The rectangular waveguide and S-shaped waveguide are connected by transition structure, turning of the transition structure for zigzag
Structure, the turning structure vertical direction have multiple steps；The rectangular waveguide port cross-sectional product is cut more than S-shaped waveguide port
Area.
2. millimeter waveguide high pass filter according to claim 1, it is characterised in that：The S-shaped waveguide is included by many
It is individual turn through 180 degree structure connection multiple rectangular waveguides.
3. millimeter waveguide high pass filter according to claim 2, it is characterised in that：The S-shaped waveguide includes 5 squares
Shape waveguide, turns through 180 degree structure by 4 and is connected with each other.
4. the millimeter waveguide high pass filter according to any one of claim 1-3, it is characterised in that：The zigzag
Turning structure and structure of turning through 180 degree carry chamfering.
5. millimeter waveguide high pass filter according to claim 4, it is characterised in that：The millimeter waveguide high pass filter
Ripple device is the centrosymmetric structure with central point as axle center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621015858.6U CN206059602U (en) | 2016-08-30 | 2016-08-30 | A kind of millimeter waveguide high pass filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621015858.6U CN206059602U (en) | 2016-08-30 | 2016-08-30 | A kind of millimeter waveguide high pass filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206059602U true CN206059602U (en) | 2017-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621015858.6U Active CN206059602U (en) | 2016-08-30 | 2016-08-30 | A kind of millimeter waveguide high pass filter |
Country Status (1)
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| CN (1) | CN206059602U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129552A (en) * | 2016-08-30 | 2016-11-16 | 江苏贝孚德通讯科技股份有限公司 | A kind of millimeter waveguide high pass filter |
-
2016
- 2016-08-30 CN CN201621015858.6U patent/CN206059602U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129552A (en) * | 2016-08-30 | 2016-11-16 | 江苏贝孚德通讯科技股份有限公司 | A kind of millimeter waveguide high pass filter |
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