CN203466275U - 3dB electric bridge - Google Patents
3dB electric bridge Download PDFInfo
- Publication number
- CN203466275U CN203466275U CN201320512278.8U CN201320512278U CN203466275U CN 203466275 U CN203466275 U CN 203466275U CN 201320512278 U CN201320512278 U CN 201320512278U CN 203466275 U CN203466275 U CN 203466275U
- Authority
- CN
- China
- Prior art keywords
- pcb board
- electric bridge
- length
- coupling line
- utility
- 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
Links
Images
Landscapes
- Details Of Aerials (AREA)
Abstract
The utility model discloses a 3dB electric bridge which comprises a PCB board, a substrate, a cover plate, a cavity, and a connector. A plurality of quarter-wavelength coupling lines are distributed on the PCB board in a folding manner. According to the utility model, the plurality of quarter-wavelength coupling lines are distributed on the PCB board in the folding manner, so the electric bridge can greatly reduce the length of a product, and doesnot increase the width and height of the product. In addition, a designer can carry out various folding arrangements for the coupling lines according to the requirements of specific appearance. The length of the structure size of the electric bridge is shorter than the length of a straight type by more than a half. From the point of appearance, although the folding-type PCB board is more complex than a PCB board in conventional layout, the machining difficulty is not increased.
Description
Technical field
The utility model relates to a kind of 3dB electric bridge, and particularly a kind of 8GHz that is applicable to is with 90 degree 3dB electric bridges of lower frequency.
Background technology
The systems such as mainly, the distribution synthetic for power in fields such as microwave communication, electronic countermeasures, radar, navigation, thermometricallies of 90 degree 3dB electric bridges, antenna and feeder network.At present at home and in the world conventional design is mainly to adopt strip lines configuration, according to the difference of the frequency bandwidth of technical requirement, adopt the mode of the coupling line of 1 grade or N level λ/4 wavelength to design, this design feature is mainly that the coupling line of N level λ/4 wavelength is cascaded, if progression is the more, will be longer by volume length after conventional design layout.
In realizing process of the present utility model, inventor finds to exist in prior art following technical problem:
1, the coupling line of existing product λ/4 wavelength adopts linear pattern layout, and the length of product is longer, and meanwhile, the volume length of product can be along with the reduction of frequency or the increase of progression and length increases;
Transmission line impedance when 2, signal code is by linear transmission line is constant, be equivalent to the signal transmission passage that this is a standard, but when signal code passes through folding later transmission line, in folding place, there is slight variation in the impedance meeting of transmission line, correspondingly, the electric parameter of product can change.
3, the length increase of product will directly cause raw-material cost to increase;
4, the volume of product increases and will cause the increase of the weight of product own, such a field of microwave communication, will be directly to limit to product applied environment.
Summary of the invention
Given this, the utility model object is to provide that a kind of volume is little, the 3dB electric bridge of low cost of manufacture.
For solving above technical problem, the technical scheme that the utility model provides is, a kind of 3dB electric bridge is provided, and comprises pcb board, liner plate, cover plate, cavity and connector, is laid with the coupling line of λ/4 wavelength on pcb board, and described coupling line is collapsible layout.
Further, described coupling line is at least divided into three sections.
Further, described coupling line adjacent two sections mutually vertical.
Preferably, symmetric figure centered by the arranging graphic of described coupling line.
Preferably, described coupling line is divided into 13 sections.
Preferably, the length of described coupling line is 135mm.
Compared with prior art, one of them the technical scheme tool in technique scheme has the following advantages:
1, the utility model carries out collapsible layout by the coupling line of λ/4 wavelength, can significantly shorten the length of product, meanwhile, can not increase width and the height of product.In addition, designer can carry out various accordion structure arrangements to coupling line according to concrete shape requirement.
2, in the utility model, coupling line is divided into multistage, adjacent two sections mutually vertical between mutually vertical, can make parallel collapsible to collapsible, the parallel asymmetrical type of moulding, collapsible, the vertical asymmetrical type of vertical symmetry type is collapsible.
3, after transmission line folds, electric parameter can change, and the utility model makes the electric parameter of product meet all technical requirement by adjusting the length of transmission line.
4, the utility model folds coupling line, and the linear length of Length Ratio of the physical dimension of product can shorten more than 1/2.From the appearance, although collapsible pcb board, than the complexity of normal arrangement, does not increase the difficulty of processing.
5, the effect that contraction in length directly brings is the cost of material, and product weight alleviates.
Accompanying drawing explanation
Fig. 1 is the front view of pcb board in the utility model one preferred embodiment.
Fig. 2 is the structural representation of the utility model one preferred embodiment.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, describe.
Referring to Fig. 1 and 2.The described 3dB electric bridge of the present embodiment, is applicable to 0 ~ 8GHz with lower frequency.This 3dB electric bridge consists of pcb board 1, liner plate (upper liner plate 2a, lower liner plate 2b), cover plate 3, cavity 4 and connector 5.From top to bottom, cover plate 3, upper liner plate 2a, pcb board 1, lower liner plate 2b, cavity 4, and the mounting means of connector 5 is identical with mounting means of the prior art, in the present embodiment not tired stating.Unlike the prior art, the arrangement of the coupling line on pcb board.On pcb board 1, be laid with the coupling line 11 of λ/4 wavelength, described coupling line 11 is collapsible layout.In the utility model, be furnished with the pcb board of collapsible coupling line 11 referred to as collapsible pcb board.
As tell-tale, it is the 90 degree 3dB electric bridges of 0.25GHz-0.5GHz that the present embodiment provides a kind of frequency range.The technical requirement of this 3dB electric bridge is as follows:
Frequency range: 0.25-0.5GHz;
Insertion loss: 0.3dBmax;
Amplitude unevenness: ± 0.5dBmax;
Phase place unevenness: ± 2 ° of max;
Standing wave: 1.2max;
Isolation: 22dBmin;
According to specification requirement, determine λ/4 wavelength coupling progression: 1 grade.
In this 3dB electric bridge, coupling line 11 is divided into 13 sections, adjacent two sections mutually vertical, symmetric figure centered by its arranging graphic, as shown in Figure 1.The first horizontal section length is 5mm, the length of the first vertical section is 7mm, the length of the second horizontal segment is 25.6mm, the length of the second vertical section is 3.5mm, the length of the 3rd horizontal segment is 16.2mm, the length of the 3rd vertical section is 3.5mm, and the length of the 4th horizontal segment is 13.4mm, and the mid point of the 4th horizontal segment is the Central Symmetry point of coupling line arranging graphic.Arrange by the way, in the present embodiment, the * 2=135mm of the overall length of coupling line 11=(5+7+25.6+3.5+16.2+3.5+13.4/2).As a comparison, in the situation that every technical parameter is identical, when coupling line is linear pattern, the length 134.747mm of coupling line.The length of collapsible pcb board shortens to 60mm by the 152.5mm of former pcb board, and width remains on 25mm equally.Under the impact of shortening at collapsible pcb board, the length of upper liner plate 2a, lower liner plate 2b, cover plate 3 and cavity 4 also needs responsively to change.
The present embodiment all improves a lot at aspects such as cost control, overall volume, weight, the product that uses this improved structure layout with the product of normal arrangement design aspect competitiveness, be mathematical.
Below be only preferred implementation of the present utility model, it should be pointed out that above-mentioned preferred implementation should not be considered as restriction of the present utility model, protection range of the present utility model should be as the criterion with claim limited range.For those skilled in the art, within not departing from spirit and scope of the present utility model, can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (6)
1. a 3dB electric bridge, comprise pcb board (1), liner plate (2a, 2b), cover plate (3), cavity (4) and connector (5), the coupling line (11) that is laid with λ/4 wavelength on pcb board (1), is characterized in that, described coupling line (11) is collapsible layout.
2. 3dB electric bridge according to claim 1, is characterized in that, described coupling line (11) is at least divided into three sections.
3. 3dB electric bridge according to claim 2, is characterized in that, described coupling line (11) adjacent two sections mutually vertical.
4. 3dB electric bridge according to claim 2, is characterized in that, symmetric figure centered by the arranging graphic of described coupling line (11).
5. 3dB electric bridge according to claim 4, is characterized in that, described coupling line (11) is divided into 13 sections.
6. 3dB electric bridge according to claim 5, is characterized in that, the length of described coupling line (11) is 135mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320512278.8U CN203466275U (en) | 2013-08-21 | 2013-08-21 | 3dB electric bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320512278.8U CN203466275U (en) | 2013-08-21 | 2013-08-21 | 3dB electric bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203466275U true CN203466275U (en) | 2014-03-05 |
Family
ID=50178617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320512278.8U Expired - Fee Related CN203466275U (en) | 2013-08-21 | 2013-08-21 | 3dB electric bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203466275U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107623162A (en) * | 2015-08-20 | 2018-01-23 | 南安市鑫灿品牌运营有限公司 | A kind of 3dB electric bridges |
| CN110994103A (en) * | 2019-12-10 | 2020-04-10 | 斯必能通讯器材(上海)有限公司 | Three-in three-out coupling bridge |
-
2013
- 2013-08-21 CN CN201320512278.8U patent/CN203466275U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107623162A (en) * | 2015-08-20 | 2018-01-23 | 南安市鑫灿品牌运营有限公司 | A kind of 3dB electric bridges |
| CN110994103A (en) * | 2019-12-10 | 2020-04-10 | 斯必能通讯器材(上海)有限公司 | Three-in three-out coupling bridge |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103534869B (en) | Waveguide filter | |
| CN204243214U (en) | A kind of intelligent antenna equipment | |
| CN202888377U (en) | Five-stage microstrip line bridge | |
| CN202997022U (en) | Novel four-inlet and four-outlet bridge | |
| CN104900966A (en) | Five-stage microstrip line bridge | |
| CN104112895A (en) | Microwave-frequency-band adjustable microstrip directional coupler | |
| CN203466275U (en) | 3dB electric bridge | |
| CN104900961A (en) | Five-stage microstrip line bridge | |
| CN102394333B (en) | Filtering directional coupler with adjustable frequency | |
| CN105489995A (en) | Microstrip line bridge | |
| CN204206668U (en) | The regulator cubicle of electromagnetism interference | |
| CN104900965A (en) | Novel four-inlet and four-outlet bridge | |
| CN201222728Y (en) | Microstrip dual-frequency antenna mixer | |
| CN104900960A (en) | Four-inlet and four-outlet bridge | |
| CN103515678B (en) | A communication radio frequency device and a filter thereof | |
| CN102395245B (en) | U-shaped electromagnetic band gap circuit board with low-frequency simultaneous switching noise inhibiting function | |
| CN104821424A (en) | Five-stage microstrip line bridge | |
| CN104821423A (en) | Four-in four-out electric bridge | |
| CN202997015U (en) | Satellite antenna and waveguide filter | |
| CN201812917U (en) | Air stripline bridge | |
| CN205092304U (en) | Ware is divided to high reliability microstrip merit | |
| CN204334525U (en) | A kind of radio-frequency (RF) switch matrix of low cost | |
| CN204011661U (en) | A kind of C-band coupler with shielding conductor | |
| CN204011630U (en) | A kind of C-band coupler with rectangular indentation | |
| CN203071207U (en) | Miniature I type H-surface power divider |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20160821 |