CN202231130U - Microstrip DC break - Google Patents
Microstrip DC break Download PDFInfo
- Publication number
- CN202231130U CN202231130U CN2011203783791U CN201120378379U CN202231130U CN 202231130 U CN202231130 U CN 202231130U CN 2011203783791 U CN2011203783791 U CN 2011203783791U CN 201120378379 U CN201120378379 U CN 201120378379U CN 202231130 U CN202231130 U CN 202231130U
- Authority
- CN
- China
- Prior art keywords
- microstrip
- shielding cavity
- printed board
- little band
- cover plate
- 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 - Fee Related
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model discloses a microstrip DC break which includes a cover plate (1), a shielding cavity (2), a microstrip printed board (3), and SMA connectors (4). The microstrip printed board (3) is arranged on the bottom of the shielding cavity (2). The number of the SMA connectors (4) is two, and the two SMA connectors (4) are arranged on the two ends of the shielding cavity (2). Probes of the SMA connectors (4) are connected with a printed line of the microstrip printed board (3). The cover plate (1) is arranged on the top of the shielding cavity (2). The microstrip DC break has the advantages of high voltage-resistant value, wide frequency band, small insertion loss, low standing wave, and the like, and can be applied to input and output terminals of a microwave instrument so as to protect the instrument.
Description
Technical field
The utility model belongs to field of mobile communication, is specifically related to a kind of little band block isolating device, is applicable to the input and output protection of microwave instrument.
Background technology
At present, block isolating device generally adopts electric capacity at a distance from straight pattern, but owing to the raising along with operating frequency, the loss of electric capacity block isolating device also increases thereupon, and when 15GHz, inserting loss just has 1～2dB; And the withstand voltage of existing block isolating device is generally about 50V, when direct voltage is excessive in the circuit, thereby might cause the breakdown instrument and meter that causes of capacitance to damage.
Summary of the invention
In order to protect the microwave instrument, the utility model proposes a kind of little band block isolating device, solves the existing not high problem of block isolating device withstand voltage, has that cost is low, a bandwidth, Insertion Loss is little, standing wave is low characteristics.
The concrete scheme that purpose adopted that realizes the utility model is following:
A kind of little band block isolating device; Comprise cover plate, shielding cavity, little band printed board and SMA connector; Wherein said little band printed board is installed in the bottom of shielding cavity, and said SMA connector is two, is installed in the two ends of shielding cavity respectively; The probe of said SMA connector links to each other with the track of little band printed board, and said cover plate is installed in the top of shielding cavity.
Further, said little band printed board is provided with two microstrip capacitors of mutual series connection, is parallel with shorting stub between these two microstrip capacitors, and this shorting stub is through ground hole ground connection.
Microstrip capacitor is through the transmission of microstrip coupled line realization microwave signal, and input cuts off with output physics, and therefore single microstrip capacitor itself just has very high withstand voltage.Simultaneously; In order to guarantee the reliability of block isolating device, the new structure that adopts two microstrip capacitors series connection of this practicality, in the middle of two microstrip capacitors again one section of parallel connection to direct-current short circuit and to the shorting stub of microwave signal open circuit to ground (ground hole); As long as there is any one microstrip capacitor to be punctured by too high direct voltage; Direct voltage will shorted to earth, even if therefore too high direct voltage input is arranged, also can guarantee the safety of microwave instrument.
Advantage such as the utlity model has withstand voltage height, bandwidth, Insertion Loss is little, standing wave is low can be used for input, the output protection instrument of microwave instrument.
Description of drawings
Fig. 1 is the structural representation of little band block isolating device of the utility model.Wherein, 1 is cover plate, and 2 is shielding cavity, and 3 is that little band printed board, 4 is the SMA connector, and 5 is microstrip capacitor, and 6 are shorting stub, and 7 is ground hole.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further explain.
A kind of little band block isolating device of the utility model comprises cover plate 1, shielding cavity 2, little band printed board 3 and SMA connector 4; Wherein said little band printed board 3 is installed in the bottom of shielding cavity 2; Said SMA connector 4 is two; Be installed in the two ends of shielding cavity 2 respectively, the probe of said SMA connector 4 links to each other with the track of little band printed board 3, and said cover plate 1 is installed in the top of shielding cavity 2.
The utility model can also adopt the structure of two microstrip capacitors 5 series connection, in the middle of two microstrip capacitors 5 again one section of parallel connection to direct-current short circuit and to the shorting stub 6 of microwave signal open circuit to ground hole 7, thereby be grounded.As long as there is any one microstrip capacitor 5 to be punctured by too high direct voltage, direct voltage will shorted to earth, even if therefore too high direct voltage input is arranged, also can guarantee the safety of microwave instrument.
Advantage such as the utlity model has withstand voltage height, bandwidth, Insertion Loss is little, standing wave is low has obtained utilization on the microwave instrument of a plurality of models.Utilization the utility model can prevent effectively that the microwave instrument from being damaged by direct voltage, and the failure rate that the microwave instrument is damaged by direct voltage drops to 0% by original 10%.
Claims (2)
1. little band block isolating device; It is characterized in that comprise cover plate (1), shielding cavity (2), little band printed board (3) and SMA connector (4), wherein said little band printed board (3) is installed in the bottom of shielding cavity (2); Said SMA connector (4) is two; Be installed in the two ends of shielding cavity (2) respectively, the probe of said SMA connector (4) links to each other with the track of little band printed board (3), and said cover plate (1) is installed in the top of shielding cavity (2).
2. little band block isolating device according to claim 1; It is characterized in that; Said little band printed board (3) is provided with two microstrip capacitors (5) of mutual series connection, is parallel with shorting stub (6) between these two microstrip capacitors (5), and this shorting stub (6) is through ground hole (7) ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203783791U CN202231130U (en) | 2011-09-28 | 2011-09-28 | Microstrip DC break |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203783791U CN202231130U (en) | 2011-09-28 | 2011-09-28 | Microstrip DC break |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202231130U true CN202231130U (en) | 2012-05-23 |
Family
ID=46081707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203783791U Expired - Fee Related CN202231130U (en) | 2011-09-28 | 2011-09-28 | Microstrip DC break |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202231130U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004893A (en) * | 2015-08-04 | 2015-10-28 | 中国电子科技集团公司第十三研究所 | Special test fixture for microwave device with micro-strip port |
-
2011
- 2011-09-28 CN CN2011203783791U patent/CN202231130U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105004893A (en) * | 2015-08-04 | 2015-10-28 | 中国电子科技集团公司第十三研究所 | Special test fixture for microwave device with micro-strip port |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hubei Sanjiang Space Chuhang Electronic Technology Co., Ltd. Assignor: Hubei Sanjiang Space Xianfeng Electronic Information Co., Ltd. Contract record no.: 2012420000151 Denomination of utility model: Microstrip DC break Granted publication date: 20120523 License type: Exclusive License Record date: 20120926 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20140928 |
|
| EXPY | Termination of patent right or utility model |