CN201069814Y - S wave band belt linear filter - Google Patents
S wave band belt linear filter Download PDFInfo
- Publication number
- CN201069814Y CN201069814Y CNU2007200388065U CN200720038806U CN201069814Y CN 201069814 Y CN201069814 Y CN 201069814Y CN U2007200388065 U CNU2007200388065 U CN U2007200388065U CN 200720038806 U CN200720038806 U CN 200720038806U CN 201069814 Y CN201069814 Y CN 201069814Y
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- CN
- China
- Prior art keywords
- strip line
- line filter
- dielectric substrate
- substrate
- filter circuit
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a S-band strip-shaped line filter, which comprises a dielectric substrate printed with a strip-shaped line filter circuit. The utility model is characterized in that the upper surface of the dielectric substrate is pasted with a surface layer dielectric substrate; the output port of the strip-shaped line filter circuit is led-out from the side of the dielectric substrate or is led-out from a hole opened on the surface layer dielectric substrate. The utility model has the advantages of small volume, high integration degree, convenient use, good consistency and high reliability, thereby being favorably applied in the fields as communication, radar receivers, electronic countermeasures, electronic instruments, aerospace electronic products, etc.
Description
Technical field
The utility model belongs to a kind of microwave component, is specifically related to a kind of strip line filter.
Background technology
Existing strip line filter all is to print the strip line filter circuit on dielectric substrate, and integrated level is low, and this filter as a plurality of filters of needs, takes up an area of greatlyyer when using in its place in circuit, strengthen the volume of device, and is very inconvenient; Simultaneously, if a plurality of strip line filter is installed together, disturbs greatly each other, and be subject to external interference.
The utility model content
The purpose of this utility model provides a kind of S-band strip line filter, volume is little, in light weight, cost is low, easy to use, high conformity, high reliability features can be widely used in every field such as communication, radar reception, electronic countermeasures, electronic instrument, aerospace electron product.
The technical solution of the utility model is as follows:
The S-band strip line filter, include dielectric substrate, be printed with the strip line filter circuit on the dielectric substrate, it is characterized in that described dielectric substrate upper surface is pasted with the surface materials substrate, the output port of described strip line filter circuit is drawn from the side of dielectric substrate, and perhaps perforate is drawn on the surface materials substrate.
The strip line two ends of described strip line filter circuit have plated-through hole at interval and are used for ground connection, and the open end of its two ends resonator loads an electric capacity matrix respectively.
Be pasted with one or more layers dielectric substrate on the surface materials substrate again, have on these dielectric substrates/no printed circuit.
Described S-band strip line filter is characterized in that its side is coated with copper plate or Gold plated Layer.
Described dielectric substrate is the F4B-2 copper coated foil plate, and its relative dielectric constant is ε r=2.55, medium height h=0.78mm.
In the existing circuit topology form, input and output all are to draw in the middle of the strip line of two ends, and by solution port match problems such as adjusting feed placement, such regulating power is limited, has limited the development and the range of application of strip line.The utility model utilizes impedance matching and transformation theory, open end at the two ends of filter circuit resonator loads an electric capacity matrix, can regulate the port match performance of filter well, thereby improved the electrical property of strip line filter, improved the port standing-wave ratio of strip line filter, particularly outstanding in the advantage of high band.
With LC and cavity body filter relatively, the most outstanding advantage of the utility model is, with the system integration in, can on the dielectric substrate of the two sides of filter, print other microwave circuit.
The utility model is mainly used in the front end of miniaturization receiver.Through suitably changing, operating frequency range can expand to 9000MHz.
The utlity model has that volume is little, integrated level is high, easy to use, high conformity, high reliability features, can be widely used in every field such as communication, radar reception, electronic countermeasures, electronic instrument, aerospace electron product.
Description of drawings
Fig. 1 is topological circuit figure of the present utility model.
Fig. 2 is the utility model structural representation.
Embodiment
Referring to Fig. 1,2.
The S-band strip line filter, including relative dielectric constant is the F4B-2 copper coated foil plate dielectric substrate 1 of ε r=2.55, be printed with strip line filter circuit 2 on the dielectric substrate, dielectric substrate 1 upper surface is pasted with surface materials substrate 3, the strip line two ends of described strip line filter circuit 2 have plated-through hole 4 at interval and are used for ground connection, and the open end of its two ends resonator 5 loads an electric capacity matrix 6 respectively.The output port 7 of strip line filter circuit 2 gap on surface materials substrate 3 two ends is drawn.S-band strip line filter side is coated with copper plate or Gold plated Layer.
The key technical indexes
| Project | Technical indicator | Unit |
| 1. operating frequency | 3100-3400MHz | MHz |
| 2. insertion loss | -40～10℃≤3.5dB 10～35℃≤3.0dB 35～60℃≤3.5dB | dB |
| 3. ripple in being with | ≤1.0dB | dB |
| 4. port standing wave | ≤1.5 | - |
| 5. band is outer suppresses | ≥60dB@2700MHz ≥60dB@3800MHz | dB |
The little band plate crimp technology of multilayer has been adopted in the making of S-band strip line filter; promptly on the F4B-2 of ε r=2.55 dielectric substrate;---protection of prefabricated skin---terminal reservation---side copper facing Gold plated Layer becomes the enclosed box body order and makes, and becomes final products by the prefabricated internal layer of elder generation.
Claims (5)
1.S wave band strip line filter, include dielectric substrate, be printed with the strip line filter circuit on the dielectric substrate, it is characterized in that described dielectric substrate upper surface is pasted with the surface materials substrate, the output port of described strip line filter circuit is drawn from the side of dielectric substrate, and perhaps perforate is drawn on the surface materials substrate.
2. S-band strip line filter according to claim 1, the strip line two ends that it is characterized in that described strip line filter circuit have plated-through hole at interval and are used for ground connection, and the open end of its two ends resonator loads an electric capacity matrix respectively.
3. S-band strip line filter according to claim 1 is characterized in that being pasted with one or more layers dielectric substrate on the surface materials substrate again, has on these dielectric substrates/no printed circuit.
4. according to claim 1,2 or 3 described S-band strip line filters, it is characterized in that its side is coated with copper plate or Gold plated Layer.
5. S-band strip line filter according to claim 1 is characterized in that described dielectric substrate is the F4B-2 copper coated foil plate, and its relative dielectric constant is ε
r=2.55, medium height h=0.78mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200388065U CN201069814Y (en) | 2007-06-22 | 2007-06-22 | S wave band belt linear filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200388065U CN201069814Y (en) | 2007-06-22 | 2007-06-22 | S wave band belt linear filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201069814Y true CN201069814Y (en) | 2008-06-04 |
Family
ID=39491203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200388065U Expired - Lifetime CN201069814Y (en) | 2007-06-22 | 2007-06-22 | S wave band belt linear filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201069814Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680129A (en) * | 2016-04-14 | 2016-06-15 | 荆州南湖机械股份有限公司 | Laminated strip-line filter |
| CN106848503A (en) * | 2017-03-24 | 2017-06-13 | 中国振华集团云科电子有限公司 | Film filter and film filter manufacture method |
-
2007
- 2007-06-22 CN CNU2007200388065U patent/CN201069814Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680129A (en) * | 2016-04-14 | 2016-06-15 | 荆州南湖机械股份有限公司 | Laminated strip-line filter |
| CN105680129B (en) * | 2016-04-14 | 2018-07-10 | 航天南湖电子信息技术股份有限公司 | A kind of laminated strip line filter |
| CN106848503A (en) * | 2017-03-24 | 2017-06-13 | 中国振华集团云科电子有限公司 | Film filter and film filter manufacture method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080604 |