CN102509863A - Bowtie pulse antenna with resistively-loaded tree delay lines - Google Patents
Bowtie pulse antenna with resistively-loaded tree delay lines Download PDFInfo
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- CN102509863A CN102509863A CN2011103385905A CN201110338590A CN102509863A CN 102509863 A CN102509863 A CN 102509863A CN 2011103385905 A CN2011103385905 A CN 2011103385905A CN 201110338590 A CN201110338590 A CN 201110338590A CN 102509863 A CN102509863 A CN 102509863A
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Abstract
The invention discloses a bowtie pulse antenna with resistively-loaded tree delay lines. The antenna consists of bowtie radiation patches (1), a dielectric substrate (2), the tree delay lines (3) and loading resistors (4). The radiation patches, the tree delay lines and the loading resistors (4) distributed on the tree delay lines are positioned on the two sides of the dielectric substrate (2). The adjacent ends of the two radiation patches serve as the feed ends (5) of the antenna, and the other ends of the two radiation patches serve as the radiation tail ends (6) of the antenna. The tree delay lines are positioned in the back area of the dielectric substrate (2) with the two radiation patches (1), and are tree-like. The tail end of each tree branch of each delay line is connected with the radiation tail ends (6) of the antenna through a plated through hole (8). A plurality of branches of each delay line (3) are converged at a convergence point (7) and then extended, and a plurality of groups of branches also can be converged at another convergence point (7) and extended, and then form an open circuit or are converged with the other delay lines (3). By the antenna, the amplitude of tail pulses can be reduced, and adverse impact on the radiation efficiency of the antenna can be reduced.
Description
Technical field
The present invention relates to a kind of pulse antenna, especially a kind of tree-like delay line resistance loads the knot pulse antenna, belongs to the technical field that pulse antenna is made.
Background technology
During pulse antenna pulses of radiation signal; Pulse current flow to from antenna input antenna end during this period of time in; If pulse antenna can not all radiate electromagnetic energy, have the remaining pulse current that does not radiate at the aerial radiation end, the residual impulse electric current can return along original path in antenna; In process after this, continue the electromagnetic radiation energy, therefore can form tail pulse.When pulse antenna is used for GPR, these tail pulses with from the signal of target at the time domain overlaid, thereby target signal generating is disturbed, therefore to take measures to reduce the influence of tail pulse in the pulses of radiation waveform usually.The knot antenna is as a kind of pulse antenna, and it is wide to have a working band, makes advantages such as simple.The application of knot antenna is very extensive, and more application is also arranged in GPR, and its main radiation direction is the normal direction on plane, knot paster place.At present, for the knot pulse antenna, the method for reduction tail pulse influence commonly used is the resistance Loading Method.But adopt resistance to load the radiation efficiency that can reduce antenna.The relative feed end of knot pulse antenna radiation tip dimensions is bigger simultaneously; The scope that end current distributes is bigger; Simply place the resistance between feed end and the radiation end to load the residual impulse electric current that can not effectively absorb antenna end, thus limited to the improvement of tail pulse adverse effect.And the lineman makes frequency range when higher the same day, and the size of antenna is less, is difficult to be provided with many long lines.
Summary of the invention
Technical problem:The present invention seeks to propose a kind of tree-like delay line resistance and load the knot pulse antenna, under the little situation of antenna size, this antenna can effectively reduce the tail pulse amplitude, and is less to the influence of antenna radiation efficiency simultaneously.
Technical scheme:Tree-like delay line resistance of the present invention loads the knot pulse antenna and comprises a pair of knot radiation patch, medium substrate, tree-like delay line and loading resistor; Wherein the knot radiation patch is positioned at the one side of medium substrate, and tree-like delay line, loading resistor are positioned at the another side of medium substrate; Loading resistor is distributed on the tree-like delay line; The close the inner of two knot radiation patch is the feed end of knot pulse antenna, and the other end is that the radiation of knot pulse antenna is terminal; Tree-like delay line is positioned at the zone at the medium substrate back side that two knot radiation patch are comprised; The tree-like delay line in each zone is tree-shaped; The several branches of delay line converge at a convergent point and extend; Several groups of such branches also can converge at another convergent point again, and then extend the back or with open circuit finish, or and other delay line converge; The end of each branch of tree-like delay line, tree-like delay line is connected with the radiation of antenna is terminal through the metallization via hole.
Described knot radiation patch be shaped as triangle or fan-shaped.
Tree-like delay line is printed, etching perhaps is placed on the medium substrate, or is suspended in the air above the medium substrate.
Tree-like delay line is being dendritic some leads near the terminal end of the radiation of knot pulse antenna, is connected with the radiation end of antenna through the metallization via hole.
Tree-like delay line be shaped as straight line or hair clip shape, its length is half the greater than the high workload wavelength of antenna.
Loading resistor is the resistance of lumped parameter form or is the resistance of the distributed constant form of resistance with the loss of delay line itself.
There are some discontinuous places on each tree-like delay line, it are connected, constitute the current path that tree-like delay line resistance loads by loading resistor.Pulse signal is at first imported from the feed end of knot pulse antenna; The radiation that is transmitted to antenna is terminal; The radiation end of antenna not the residual impulse energy of radiation get into the tree-like delay line that resistance loads through the metallization via hole; Delay line is that the electric current of residual impulse energy provides additional current paths, and the residual impulse energy of radiation does not get into the tree-like delay line that resistance loads through metallized via hole, has avoided the tail pulse that causes because of the terminal reflection of aerial radiation; Loading resistor on the delay line will consume the residual impulse energy that gets into current path, make the tail pulse amplitude reduce greatly.The densely distributed metallization via hole that links to each other with tree-like delay line makes the terminal residual impulse energy of knot pulse antenna radiation can as often as possible get into delay line, the more effective influence that reduces tail pulse.Because delay line is at the back side of knot radiation patch main radiation direction, the energy emission on main radiation direction does not exert an influence delay line to the knot pulse antenna in the space that it occupies; And because the effect of blocking of knot paster, the residual impulse energy on delay line towards the energy of main radiation direction radiation seldom.Because loading resistor does not absorb the pulse current of knot radiation patch, this kind resistance load mode is also less to the adverse effect of antenna radiation efficiency simultaneously.The distribution mode of resistance on delay line of the resistance sum of adjustment loading resistor, adjustment loading resistor, the consistency of via hole, the length of delay line etc. can change the amplitude of tail pulse in the pulse signal.
Beneficial effect:The invention has the beneficial effects as follows that the resistance that the knot pulse antenna has been carried out tape tree shape delay line loads, and effectively reduces the amplitude of tail pulse in the radiation waveform, has reduced the adverse effect of loading resistor paired pulses antenna radiation efficiency.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Have among the figure: knot radiation patch 1, medium substrate 2, tree-like delay line 3, loading resistor 4, the feed end 5 of antenna, the radiation end 6 of antenna, the convergent point 7 of delay line, metallization via hole 8.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
The technical scheme that the present invention adopted is: tree-like delay line resistance loads the knot pulse antenna and is made up of knot radiation patch, medium substrate, tree-like delay line and loading resistor; Wherein the knot radiation patch is positioned at medium substrate one side, and tree-like delay line and distribution loading resistor on it are positioned at the opposite side of medium substrate.Two knot radiation patch are shaped as triangle or fan-shaped, are positioned at the same surface of medium substrate, and two close ends of knot radiation patch are feed ends of knot pulse antenna, and the other end is that the radiation of knot pulse antenna is terminal.The tree-like delay line of some branches is positioned at the zone at the medium substrate back side that two knot radiation patch are comprised, and makes the radiation of delay line on the antenna main radiation direction blocked by the knot radiation patch like this, thereby the radiation of antenna is not exerted an influence.Be distributed with one or the tree-like delay line of racemosus at the medium substrate back side of each knot radiation patch; The several branches of delay line converge at a convergent point and extend; Several groups of such branches also can converge at another convergent point again; And then extend the back or with open circuit finish, or and other delay line converge, just as tree structure; Each tree-like delay line is dendroid at its other direction end, is connected with the radiation of antenna is terminal respectively through metallized via hole, and the dense even distribution of via hole of metallizing, several are one group and link to each other one by one with the tree-like branch of a tree-like delay line.There are some discontinuous places on each tree-like delay line, it are connected, constitute the current path that tree-like delay line resistance loads by loading resistor.Pulse signal at first adds from the feed end of knot pulse antenna; The radiation that is transmitted to antenna is terminal; The radiation end of antenna not the residual impulse energy of radiation get into the tree-like delay line that resistance loads through the metallization via hole; Delay line is that the electric current of residual impulse energy provides additional current paths, and the loading resistor on the delay line will consume the residual impulse energy that gets into current path, make the tail pulse amplitude reduce greatly.The densely distributed metallization via hole that links to each other with tree-like delay line makes the terminal residual impulse energy of knot pulse antenna radiation can as often as possible get into current path, thereby can more effectively reduce the influence of tail pulse.Tree-like delay line printing or etching or stick on the medium substrate also can be suspended in the air.Because delay line is at the back side of knot radiation patch main radiation direction, the energy emission on main radiation direction does not exert an influence delay line to the knot pulse antenna in the space that it occupies; And because the effect of blocking of knot paster, the residual impulse energy on delay line towards the energy of main radiation direction radiation seldom.Simultaneously because the resistance pulse current of absorbed radiation not, this kind resistance loads also less to the adverse effect of antenna radiation efficiency.Whole in addition tree-like delay line all at the back side of the medium substrate of radiation patch, also makes the radiation of delay line to be blocked by radiation patch, avoids influencing the normal radiation of aerial radiation paster.The distribution mode of resistance on delay line of the resistance sum of adjustment loading resistor, adjustment loading resistor, the consistency of via hole, the length of delay line etc. can change the amplitude of tail pulse in the pulse signal.
Structurally; This tree-like delay line resistance loads the knot pulse antenna and is made up of knot radiation patch 1, medium substrate 2, tree-like delay line 3 and loading resistor 4; Wherein knot radiation patch 1 and tree-like delay line 3, loading resistor 4 lay respectively at the both sides of same medium substrate 2, and loading resistor 4 is distributed on the tree-like delay line 3.One end of knot radiation patch 1 is the feed end 5 of knot pulse antenna, and the other end is the radiation terminal 6 of knot pulse antenna.The tree-like delay line 3 of two or racemosus is positioned at the zone at two knot radiation patch, 1 pairing medium substrate, 2 back sides; Each knot radiation patch 1 right medium substrate 2 back sides be distributed with one or the tree-like delay line 3 of racemosus; Delay line 3 several branches converge at a convergent point 7 and extend; Several groups of such branches also can converge at another convergent point again, and then extend the back or with open circuit finish, or and other delay line converge; Each tree-like delay line 3 is dendroid at its other direction end, is connected with the radiation terminal 6 of antenna respectively through metallization via hole 8.Can be rectilinear wire between two ends of each tree-like delay line 3, also can be the hairpin lead, the length of delay line is half the or more greater than antenna maximum functional wavelength usually.The metallization via hole 8 that connects the radiation terminal 6 of tree-like delay line 3 and antenna can be metal column or hollow metal via hole, and the dense even distribution of via hole penetrates medium substrate 2, and several are one group and link to each other one by one with the tree-like radiation conductor of a tree-like delay line 3.Be distributed with loading resistor 4 on the tree-like delay line 3, loading resistor 4 can be the resistance of distributed constant form, and this moment, tree-like delay line 3 itself was a lossy transmission, and loading resistor 4 is provided by the loss of transmission line; Also can be the resistance of lumped parameter form, exist some discontinuous places on each tree-like delay line 3 this moment, by loading resistor 4 it is connected.Tree-like delay line 3 constitutes the current path that tree-like delay line resistance loads with loading resistor 4.
On making, the manufacturing process that this tree-like delay line resistance loads the knot pulse antenna can adopt semiconductor technology, ceramic process, laser technology or printed circuit technology.This tree-like delay line resistance loads the knot pulse antenna and is made up of knot radiation patch 1, medium substrate 2, tree-like delay line 3 and 4 of loading resistors; Wherein knot radiation patch 1 is made up of the good conductor material of electric conductivity; Shape can be triangle or fan-shaped; Be positioned at the same surface of medium substrate 2, medium substrate 2 is wanted the alap dielectric material of service wear.Tree-like delay line 3 is produced on the opposite side of medium substrate 2; The length of delay line is half the or more greater than antenna maximum functional wavelength usually; Therefore can be rectilinear wire between two ends of each tree-like delay line 3, perhaps be made as the hairpin lead to guarantee the delay line long enough.Be distributed with loading resistor 4 on the tree-like delay line 3, loading resistor 4 can be the resistance of surface mount resistor or band lead-in wire; Also can be with the bigger lead of resistance as delay line, at this moment can be less with or without loading resistor, the conductor resistance of delay line itself has just replaced the effect of loading resistor.
According to the above, just can realize the present invention.
Claims (6)
1. a tree-like delay line resistance loads the knot pulse antenna, it is characterized in that this tree-like delay line resistance loads the knot pulse antenna and comprises a pair of knot radiation patch (1), medium substrate (2), tree-like delay line (3) and loading resistor (4); Wherein knot radiation patch (1) is positioned at the one side of medium substrate (2), and tree-like delay line (3), loading resistor (4) are positioned at the another side of medium substrate (2); Loading resistor (4) is distributed on the tree-like delay line (3); The close the inner of two knot radiation patch (1) is the feed end (5) of knot pulse antenna, and the other end is the radiation terminal (6) of knot pulse antenna; Tree-like delay line (3) is positioned at the zone at the medium substrate back side that two knot radiation patch (1) are comprised; Tree-like delay line (3) is tree-shaped, and the end of each branch of delay line (3) all is connected with the radiation terminal (6) of antenna through metallization via hole (8); The several branches of delay line (3) converge at a convergent point (7) and extend, and several groups of such branches also can converge at another convergent point (7) again, and then extend back or open circuit, or and other delay line converge.
2. tree-like delay line resistance according to claim 1 loads the knot pulse antenna, and what it is characterized in that described knot radiation patch (1) is shaped as triangle or fan-shaped.
3. tree-like delay line resistance according to claim 1 loads the knot pulse antenna, it is characterized in that tree-like delay line (3) is printed, etching perhaps is placed on the medium substrate (2), or is suspended in the air above the medium substrate (2).
4. load the knot pulse antenna according to claim 1 or 3 described tree-like delay line resistance; It is characterized in that tree-like delay line (3) is dendritic some leads at the end near the radiation of knot pulse antenna terminal (6), be connected with the radiation end (6) of antenna through metallization via hole (8).
5. load the knot pulse antennas according to claim 1 or 3 described tree-like delay line resistance, what it is characterized in that tree-like delay line (3) is shaped as straight line or hair clip shape, and its length is half the greater than the high workload wavelength of antenna.
6. tree-like delay line resistance according to claim 1 loads the knot pulse antenna, it is characterized in that loading resistor (4) is the resistance of lumped parameter form or is the resistance of the distributed constant form of resistance with the loss of delay line itself.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110338590.5A CN102509863B (en) | 2011-11-01 | 2011-11-01 | Bowtie pulse antenna with resistively-loaded tree delay lines |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110338590.5A CN102509863B (en) | 2011-11-01 | 2011-11-01 | Bowtie pulse antenna with resistively-loaded tree delay lines |
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| Publication Number | Publication Date |
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| CN102509863A true CN102509863A (en) | 2012-06-20 |
| CN102509863B CN102509863B (en) | 2014-01-01 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0618650A (en) * | 1992-07-03 | 1994-01-28 | Tokyo Gas Co Ltd | Antenna for underground prospecting radar |
| CN1633108A (en) * | 2005-01-12 | 2005-06-29 | 北京理工大学 | Dynamic reconfigurable multi-granularity optical buffer for all-optical switching network |
| CN1697257A (en) * | 2005-06-15 | 2005-11-16 | 东南大学 | Delay line loaded impulse antenna |
| US20080252530A1 (en) * | 2007-04-16 | 2008-10-16 | Ki-Hyoung Bae | Multi-resonant broadband antenna |
| CN202405413U (en) * | 2011-11-01 | 2012-08-29 | 东南大学 | Tree-shaped delay line resistance loading tie pulse antenna |
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2011
- 2011-11-01 CN CN201110338590.5A patent/CN102509863B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0618650A (en) * | 1992-07-03 | 1994-01-28 | Tokyo Gas Co Ltd | Antenna for underground prospecting radar |
| CN1633108A (en) * | 2005-01-12 | 2005-06-29 | 北京理工大学 | Dynamic reconfigurable multi-granularity optical buffer for all-optical switching network |
| CN1697257A (en) * | 2005-06-15 | 2005-11-16 | 东南大学 | Delay line loaded impulse antenna |
| US20080252530A1 (en) * | 2007-04-16 | 2008-10-16 | Ki-Hyoung Bae | Multi-resonant broadband antenna |
| CN202405413U (en) * | 2011-11-01 | 2012-08-29 | 东南大学 | Tree-shaped delay line resistance loading tie pulse antenna |
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| CN102509863B (en) | 2014-01-01 |
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