CN201741785U - Improved strip line directional coupler - Google Patents
Improved strip line directional coupler Download PDFInfo
- Publication number
- CN201741785U CN201741785U CN2010200625556U CN201020062555U CN201741785U CN 201741785 U CN201741785 U CN 201741785U CN 2010200625556 U CN2010200625556 U CN 2010200625556U CN 201020062555 U CN201020062555 U CN 201020062555U CN 201741785 U CN201741785 U CN 201741785U
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- CN
- China
- Prior art keywords
- conduction band
- directional coupler
- strip line
- right angle
- length
- Prior art date
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Abstract
The utility model discloses an improved strip line directional coupler, which comprises a cavity body, a main line conduction band and a sub-line conduction band are disposed in the cavity body, and the main line conduction band is divided into two sections, and the utility model is characterized in that the sub-line conduction band is provided with a first section and a second section, and an orthogonal cut is arranged at the bending part connected with the first section and the second section of the sub-line conduction band. The utility model does not change the cavity body structure and the main line conduction band of the original 800-2500MHz strip line directional coupler, only the sub-line conduction band is modified slightly, and can be broadened to 680-2700MHz on the frequency band, and indexes of coupling degree fluctuation, return loss, directivity and the like are greatly improved.
Description
[technical field]
The utility model relates to a kind of coupler, relates in particular to a kind of improved strip line directional coupler.
[background technology]
The strip line directional coupler that existing known a kind of frequency bandwidth is 800-2500MHZ, comprise cavity, be provided with main line conduction band and by-pass conduction band in the cavity, the zone of main line conduction band and the coupling of by-pass conduction band is the coupled zone, main line conduction band and the shape of by-pass conduction band in the coupled zone are symmetrical, and cavity is symmetrical up and down with horizontal center line.Main line conduction band and by-pass conduction band are 2 joints.
[summary of the invention]
The technical problems to be solved in the utility model provide a kind of on the strip line directional coupler basis of 800-2500MHZ improved strip line directional coupler, the strip line directional coupler basically identical of its overall dimension and inside cavity structure and 800-2500MHZ, but frequency bandwidth can expand to 680-2700MHZ.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of improved strip line directional coupler, comprise cavity, main line conduction band and by-pass conduction band are housed in the cavity, the main line conduction band is 2 joints, described by-pass conduction band has the 1st joint and the 2nd joint, and the bending part that the 1st joint of by-pass conduction band connects the 2nd joint has a right angle incision.
More perfect is that described right angle incision is out on the hypotenuse of main line conduction band direction.
More perfect is that the length of described right angle incision is the length of side of right angle incision along by-pass conduction band length direction.
More perfect is that the length of described right angle incision is from 0.7 millimeter to 1.6 millimeters.
More perfect is that the length of described right angle incision is 0.8 millimeter to 1.2 millimeters.
More perfect is that the length of described right angle incision is 1.3 millimeters to 1.6 millimeters.
The effective effect of the utility model is:
1, slightly makes an amendment owing to the by-pass conduction band, influence to the close coupling place structural symmetry of 800-2500MHZ strip line directional coupler is little, broadening to some extent on frequency band simultaneously, and indexs such as degree of coupling fluctuating, return loss and directivity all obtain bigger improvement;
2, owing to do not change the cavity body structure and the main line conduction band of original 800-2500MHZ strip line directional coupler, only the by-pass conduction band is slightly made an amendment, and therefore can save the resources of production.
[description of drawings]
Below in conjunction with the drawings and specific embodiments the improved strip line directional coupler of the utility model is described in further detail.
Fig. 1 is the structural representation of the improved strip line directional coupler of the utility model embodiment.
Fig. 2 is the by-pass conduction band diagram of the improved strip line directional coupler of the utility model embodiment embodiment.
Fig. 3 is Figure 1A place partial enlarged drawing.
Fig. 4 is the structural representation of the strip line directional coupler before improving.
Fig. 5 is Fig. 4 B place partial enlarged drawing
Among Fig. 1, Fig. 4,1-main line conduction band, 2-by-pass conduction band, 3-cavity.
Fig. 2, among Fig. 3,5-by-pass conduction band the 1st joint, 6-by-pass conduction band the 2nd joint, 7-right angle incision, L-right angle incision length, the H-right angle incision degree of depth.
[embodiment]
In Fig. 1, the improved strip line directional coupler of the utility model embodiment shown in Figure 2, main line conduction band 1 and by-pass conduction band 2 are by being installed in symmetrically in the cavity 4 of coupler with the cavity center line, the main line conduction band is 2 joints, and the by-pass conduction band also is 2 joints, is respectively the 1st joint the 5 and the 2nd joint 6.Carry out the transition at the 1st joint 5 of by-pass conduction band on the hypotenuse of the 2nd joint 6 bending part and have a right angle incision 7, cut-out direction is towards the main line conduction band that is close to, right angle incision 7 is a length L along the length of side of by-pass conduction band length direction, is depth H perpendicular to the length of side of length direction.This right angle incision 7 has constituted a step on the hypotenuse of the bending part of by-pass conduction band the 1st joint 5 to the 2nd joints 6.This step can regard that the bending parts that carry out the transition to the 2nd joint 6 at the 1st joint 5 of 800-2500MHZ by-pass conduction band in the past add 1 joint conduction band as, on the basis of cavity body structure that does not change original 800-2500MHZ strip line directional coupler and main line conduction band, frequency bandwidth can be expanded to 680-2700MHZ like this.
For the degree of coupling of different decibels, the length L of the right angle incision on the by-pass conduction band can be from 0.7 millimeter to 1.6 millimeters.
Wherein, when the degree of coupling was 5 decibels to 7 decibels, the length range of right angle incision was the 0.8-1.2 millimeter, and the physical length in embodiment 1 is 1.0 millimeters; When the degree of coupling was 10 decibels to 40 decibels, the length range of right angle incision was 1.3 millimeters to 1.6 millimeters, and the physical length in embodiment 2 is 1.5 millimeters.
In coupling regime, because this joint size that the by-pass conduction band adds is little of ignoring, so main line conduction band and by-pass conduction band still can be regarded as symmetrical structure at the close coupling place, therefore the time power transformation DISTRIBUTION OF MAGNETIC FIELD that encourages in the time of guaranteeing by major-minor two conduction bands transmission microwave signal also is just the same, thereby the discontinuity of major-minor two conduction bands is consistent.
Claims (6)
1. an improved strip line directional coupler comprises cavity, and main line conduction band and by-pass conduction band are housed in the cavity, the main line conduction band is 2 joints, it is characterized in that described by-pass conduction band has the 1st joint and the 2nd joint, the bending part that the 1st joint of by-pass conduction band connects the 2nd joint has a right angle incision.
2. improved strip line directional coupler according to claim 1 is characterized in that described right angle incision is out on the hypotenuse of main line conduction band direction.
3. improved strip line directional coupler according to claim 1 is characterized in that, the length of described right angle incision is the length of side of right angle incision along by-pass conduction band length direction.
4. improved strip line directional coupler according to claim 3 is characterized in that the length of described right angle incision is from 0.7 millimeter to 1.6 millimeters.
5. improved strip line directional coupler according to claim 4 is characterized in that, the length of described right angle incision is 0.8 millimeter to 1.2 millimeters.
6. improved strip line directional coupler according to claim 4 is characterized in that, the length of described right angle incision is 1.3 millimeters to 1.6 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200625556U CN201741785U (en) | 2010-01-20 | 2010-01-20 | Improved strip line directional coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200625556U CN201741785U (en) | 2010-01-20 | 2010-01-20 | Improved strip line directional coupler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201741785U true CN201741785U (en) | 2011-02-09 |
Family
ID=43557062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200625556U Expired - Fee Related CN201741785U (en) | 2010-01-20 | 2010-01-20 | Improved strip line directional coupler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201741785U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151594A (en) * | 2013-03-26 | 2013-06-12 | 成都安擎微波科技有限责任公司 | Directional coupler |
| CN106207362A (en) * | 2016-08-12 | 2016-12-07 | 中国电子科技集团公司第四十研究所 | Miniaturization high power directional coupler |
-
2010
- 2010-01-20 CN CN2010200625556U patent/CN201741785U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151594A (en) * | 2013-03-26 | 2013-06-12 | 成都安擎微波科技有限责任公司 | Directional coupler |
| CN103151594B (en) * | 2013-03-26 | 2015-09-09 | 成都安擎微波科技有限责任公司 | A kind of directional coupler |
| CN106207362A (en) * | 2016-08-12 | 2016-12-07 | 中国电子科技集团公司第四十研究所 | Miniaturization high power directional coupler |
| CN106207362B (en) * | 2016-08-12 | 2019-04-09 | 中国电子科技集团公司第四十一研究所 | Minimize high power directional coupler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20110209 Termination date: 20130120 |