CN102509864B - Resistor loading bowtie pulse antenna communicated with tree-form delay lines - Google Patents
Resistor loading bowtie pulse antenna communicated with tree-form delay lines Download PDFInfo
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- CN102509864B CN102509864B CN201110338597.7A CN201110338597A CN102509864B CN 102509864 B CN102509864 B CN 102509864B CN 201110338597 A CN201110338597 A CN 201110338597A CN 102509864 B CN102509864 B CN 102509864B
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Abstract
The invention relates to a resistor loading bowtie pulse antenna communicated with tree-form delay lines, in particular to a resistor loading pulse antenna. The resistor loading pulse antenna consists of bowtie radiation patches (1), a dielectric substrate (2), tree-form delay lines (3) and loading resistors (4), wherein the two radiation patches (1) are positioned on the same surface of the dielectric substrate (2), close ends of the two radiation patches (1) are feeding ends (5) of the bowtie pulse antenna, and the other ends of the two radiation patches (1) are radiation tail ends (6) of the bowtie pulse antenna; the tree-form delay lines (3) are positioned in the backside areas of the dielectric substrate of the two radiation patches, the delay lines in each area are distributed in a tree form, converged at a convergent point (7) of the delay lines and connected with one another through communicating wires (8); the other tail end of each tree-form delay line (3) is connected with radiation tail ends (6) of the antenna through a metallized through hole (9); and the loading resistors (4) are positioned on the delay lines (3). The resistor loading bowtie pulse antenna has the capabilities of reducing the amplitude of tail pulses, expanding the impedance bandwidth of the antenna, and reducing adverse effect on the radiation efficiency of the antenna.
Description
Technical field
The present invention relates to a kind of pulse antenna, especially a kind of resistor loading bowtie pulse antenna communicated with tree-form delay lines, belong to the technical field that pulse antenna is manufactured.
Background technology
During pulse antenna pulses of radiation signal, at pulse current, from antenna input, flow to antenna end during this period of time in, if pulse antenna can not all radiate electromagnetic energy, have the remaining pulse current do not radiate at the aerial radiation end, the residual impulse electric current can return along original path in antenna, continue the electromagnetic radiation energy in process after this, therefore can form tail pulse.At pulse antenna when the ground penetrating radar, these tail pulses with signal from target at the time domain overlaid, thereby target signal generating is disturbed, therefore usually to take measures to reduce the impact of tail pulse in the pulses of radiation waveform.Bow―tie antenna is as a kind of pulse antenna, has a working band wide, makes the advantages such as simple.The application of Bow―tie antenna is very extensive, and more application, the normal direction that its main radiation direction is plane, knot paster place are also arranged in ground penetrating radar.At present, for bow tie pulse antenna, the method for reduction tail pulse impact commonly used is the resistance Loading Method.But resistance loads the radiation efficiency that can reduce antenna.In addition, along with operating frequency reduces, the decline of antenna radiation capability, cause effectively radiation of low frequency energy, but from the feed end of antenna, antenna is opened a way, the impedance mismatch of antenna, low frequency energy reflects antenna, affects the work of transmitter, make the operating frequency of resistance loaded antenna be difficult to significantly lower, the impedance bandwidth of antenna is difficult to effective broadening.
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Summary of the invention
technical problem:the present invention seeks to propose a kind of resistor loading bowtie pulse antenna communicated with tree-form delay lines, this antenna can effectively reduce the tail pulse amplitude, simultaneously less on the impact of antenna radiation efficiency, and the effective impedance bandwidth of broadening antenna.
technical scheme:resistor loading bowtie pulse antenna communicated with tree-form delay lines of the present invention comprises a pair of knot radiation patch, medium substrate, tree-form delay line and loading resistor; Wherein the knot radiation patch is positioned at the one side of medium substrate, and tree-form delay line, loading resistor are positioned at the another side of medium substrate; Loading resistor is distributed on tree-form delay line; Two close the inners of knot radiation patch are feed ends of bow tie pulse antenna, and the other end is the radiation tail end of bow tie pulse antenna; Tree-form delay line is positioned at the zone at the medium substrate back side that two knot radiation patch comprise, each regional tree-form delay line 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 with other delay line, converge after extending, the tree-form delay line in two zones is connected through being communicated with line by convergent point, at the end of each branch of tree-form delay line, by the metallization via hole, with the radiation tail end of antenna, be connected.
Described knot radiation patch be shaped as triangle or fan-shaped.
Tree-form delay line printing, etching or be placed on medium substrate, or be suspended in the air above medium substrate.
Tree-form delay line is dendritic some wires at an end of the radiation tail end near bow tie pulse antenna, through the metallization via hole, with the radiation tail end of antenna, is connected.
Be communicated with by being communicated with line between the convergent point of two regional tree-form delay lines, be communicated with on line and be distributed with or without loading resistor.
Tree-form delay line be shaped as straight line or hair clip shape, its length is greater than half of the high workload wavelength of antenna.
Loading resistor is the resistance of the resistance of lumped parameter form or the loss of delay line itself of the take distributed constant form that is resistance.
There are some discontinuous places on each tree-form delay line, by loading resistor, it are connected, form the current path of the tree-form delay line resistance loading be communicated with.At first pulse signal is inputted from the feed end of bow tie pulse antenna, be transmitted to the radiation tail end of antenna, the radiation tail end of antenna not the residual impulse energy of radiation enter through the metallization via hole tree-form delay line that the resistance of connection loads, delay line provides additional current paths for the electric current of residual impulse energy, the residual impulse energy of radiation does not enter through metallized via hole the tree-form delay line that resistance loads, the tail pulse of having avoided the reflection because of the aerial radiation end to cause; Loading resistor on delay line enters consumption the residual impulse energy of current path, makes the tail pulse amplitude greatly reduce.In addition from feed end, antenna is no longer open circuit, and its loading resistor has determined the low frequency input impedance of antenna, selects applicable loading resistor, can reduce the reflection of low frequency energy, therefore greatly broadening the impedance bandwidth of antenna.The densely distributed metallization via hole be connected with tree-form delay line makes the residual impulse energy of bow tie pulse antenna radiation tail end can as often as possible enter delay line, the more effective impact that reduces tail pulse.Due to the back side of delay line in knot radiation patch main radiation direction, in the space that delay line occupies at it, to bow tie pulse antenna, the energy emission on main radiation direction does not exert an influence; And due to the effect of blocking of knot paster, the residual impulse energy on delay line towards the energy of main radiation direction radiation seldom.Do not absorb the pulse current of knot radiation patch due to loading resistor, this kind of resistance load mode is also less to the adverse effect of antenna radiation efficiency simultaneously.Adjust the amplitude that the resistance sum of loading resistor, the distribution mode of resistance on delay line of adjusting loading resistor, the consistency of via hole, the length of delay line etc. can change tail pulse in pulse signal.
beneficial effect:the invention has the beneficial effects as follows, the resistance that bow tie pulse antenna has been carried out to band connection tree-form delay line loads, effectively reduce the amplitude of tail pulse in radiation waveform, broadening the impedance bandwidth of antenna, reduced the adverse effect of loading resistor paired pulses antenna radiation efficiency.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure, have: knot radiation patch 1, medium substrate 2, tree-form delay line 3, loading resistor 4, the feed end 5 of antenna, the radiation tail end 6 of antenna, the convergent point 7 of delay line, be communicated with line 8, metallization via hole 9.
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Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
The technical solution adopted in the present invention is: resistor loading bowtie pulse antenna communicated with tree-form delay lines is comprised of knot radiation patch, medium substrate, tree-form delay line and loading resistor, wherein the knot radiation patch is positioned at medium substrate one side, and tree-form delay line and the loading resistor distributed thereon 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 bow tie pulse antenna, and the other end is the radiation tail end of bow tie pulse antenna.The tree-form delay line of the connection of two or racemosus is positioned at the zone at the medium substrate back side that two knot radiation patch comprise, make like this radiation of delay line on the antenna main radiation direction be blocked by the knot radiation patch, thereby the radiation of antenna is not exerted an influence.Be distributed with one or racemosus tree-form delay line at the medium substrate back side of each knot radiation patch, these tree-form delay lines are 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 with other delay line, converge after extending, the tree-form delay line in two zones is connected through being communicated with line by the convergent point of delay line, each tree-form delay line is dendroid at its other direction end, by metallized via hole, with the radiation tail end of antenna, be connected respectively, metallizing, via hole is dense to be uniformly distributed, several are one group and are connected one by one with the tree-like radiation conductor of a tree-form delay line.There are some discontinuous places on each tree-form delay line, by loading resistor, it are connected, form the current path of the tree-form delay line resistance loading be communicated with.At first pulse signal adds from the feed end of bow tie pulse antenna, be transmitted to the radiation tail end of antenna, the radiation tail end of antenna not the residual impulse energy of radiation enter through the metallization via hole tree-form delay line that the resistance of connection loads, delay line provides additional current paths for the electric current of residual impulse energy, the residual impulse energy of radiation does not enter through metallized via hole the delay line that resistance loads, the tail pulse of having avoided the reflection because of the aerial radiation end to cause; Loading resistor on delay line enters consumption the residual impulse energy of current path, makes the tail pulse amplitude greatly reduce.In addition from feed end, antenna is no longer open circuit, and its loading resistor has determined the low frequency input impedance of antenna, selects applicable loading resistor, can reduce the reflection of low frequency energy, therefore greatly broadening the impedance bandwidth of antenna.The densely distributed metallization via hole be connected with tree-form delay line makes the residual impulse energy of bow tie pulse antenna radiation tail end can as often as possible enter current path, thereby can more effectively reduce the impact of tail pulse.Tree-form delay line printing or the etching be communicated with or stick on medium substrate, also can be suspended in air.Due to the back side of delay line in knot radiation patch main radiation direction, in the space that delay line occupies at it, to bow tie pulse antenna, the energy emission on main radiation direction does not exert an influence; And due to the effect of blocking of knot paster, the residual impulse energy on delay line towards the energy of main radiation direction radiation seldom.Simultaneously, due to the resistance pulse current of radiation-absorbing not, this kind of resistance loads also less to the adverse effect of antenna radiation efficiency.Adjust the amplitude that the resistance sum of loading resistor, the distribution mode of resistance on delay line of adjusting loading resistor, the consistency of via hole, the length of delay line etc. can change tail pulse in pulse signal.
Structurally, this resistor loading bowtie pulse antenna communicated with tree-form delay lines is comprised of knot radiation patch 1, medium substrate 2, tree-form delay line 3 and loading resistor 4, wherein knot radiation patch 1 and tree-form delay line 3, loading resistor 4 lay respectively at the both sides of same medium substrate 2, and loading resistor 4 is distributed on tree-form delay line 3.The feed end 5 that one end of knot radiation patch 1 is bow tie pulse antenna, the radiation tail end 6 that the other end is bow tie pulse antenna.The tree-form delay line 3 of the connection of two or racemosus is positioned at the zone at two the corresponding medium substrate of knot radiation patch 12 back sides, medium substrate 2 back sides right in each knot radiation patch 1 are distributed with one or racemosus tree-form delay line 3, these tree-form delay lines 3 are tree-shaped, the several branches of delay line converge at a convergent point 7 and extend, several groups of such branches also can converge at another convergent point 7 again, and then with other delay line, converge after extending, the tree-form delay line 3 in two zones is connected through being communicated with line 8 by the convergent point 7 of delay line, each tree-form delay line 3 is dendroid at its other direction end, by metallization via hole 9, with the radiation tail end 6 of antenna, be connected respectively.Between two ends of each tree-form delay line 3, can be rectilinear wire, can be also the hairpin wire, and the length of delay line is greater than the half or more of antenna maximum functional wavelength usually.The metallization via hole 9 that connects the radiation tail end 6 of tree-form delay line 3 and antenna can be metal column or hollow metal via hole, and via hole is dense to be uniformly distributed, and penetrates medium substrate 2, with the branches end of each tree-form delay line 4, is connected one by one.Be distributed with loading resistor 4 on tree-form delay line 3, loading resistor 4 can be the resistance of distributed constant form, and now tree-form delay line 3 itself is lossy transmission, and loading resistor 4 is provided by the loss of transmission line; Can be also the resistance of lumped parameter form, now on each tree-form delay line 3, have some discontinuous places, by loading resistor 4, it is connected.Be communicated with on line 8 and can be distributed with loading resistor 4, also can not have.Tree-form delay line 3, loading resistor 4 and connection line 8 form the current path of the tree-form delay line resistance loading be communicated with.
On manufacturing, the manufacturing process of this resistor loading bowtie pulse antenna communicated with tree-form delay lines can adopt semiconductor technology, ceramic process, laser technology or printed circuit technology.This resistor loading bowtie pulse antenna communicated with tree-form delay lines is comprised of knot radiation patch 1, medium substrate 2, tree-form delay line 3 and loading resistor 4, wherein knot radiation patch 1 conductor material good by electric conductivity forms, 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-form delay line 3 is produced on the opposite side of medium substrate 2, the length of delay line is greater than the half or more of antenna maximum functional wavelength usually, therefore can be rectilinear wire between two ends of each tree-form delay line 3, or be made as the hairpin wire to guarantee the delay line long enough.Be distributed with loading resistor 4 on tree-form delay line 3, loading resistor 4 can be the resistance of surface mount resistor or band lead-in wire; Wire that also can be larger with resistance is 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 resistor loading bowtie pulse antenna communicated with tree-form delay lines, is characterized in that this resistor loading bowtie pulse antenna communicated with tree-form delay lines comprises a pair of knot radiation patch (1), medium substrate (2), tree-form delay line (3) and loading resistor (4); Wherein knot radiation patch (1) is positioned at the one side of medium substrate (2), and tree-form delay line (3), loading resistor (4) are positioned at the another side of medium substrate (2); Loading resistor (4) is distributed on tree-form delay line (3); Two close the inners of knot radiation patch (1) are feed ends (5) of bow tie pulse antenna, and the other end is the radiation tail end (6) of bow tie pulse antenna; Tree-form delay line (3) is positioned at the zone of the medium substrate that two knot radiation patch (1) comprise, each regional tree-form delay line (3) 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 with other delay line, converge after extending, the tree-form delay line in two zones (3) is connected through being communicated with line (8) by convergent point, and the end of each branch of tree-form delay line (3) is connected with the radiation tail end (6) of antenna by metallization via hole (9).
2. resistor loading bowtie pulse antenna communicated with tree-form delay lines according to claim 1, what it is characterized in that described knot radiation patch (1) is shaped as triangle or fan-shaped.
3. resistor loading bowtie pulse antenna communicated with tree-form delay lines according to claim 1, is characterized in that tree-form delay line (3) printing, etching or be placed on medium substrate (2).
4. according to the described resistor loading bowtie pulse antenna communicated with tree-form delay lines of claim 1 or 3, it is characterized in that tree-form delay line (3) is dendritic some wires at an end of the radiation tail end (6) near bow tie pulse antenna, is connected with the radiation tail end (6) of antenna through metallization via hole (9).
5. according to the described resistor loading bowtie pulse antenna communicated with tree-form delay lines of claim 1 or 3, what it is characterized in that tree-form delay line (3) is shaped as straight line or hair clip shape, and its length is greater than half of the high workload wavelength of antenna.
6. resistor loading bowtie pulse antenna communicated with tree-form delay lines according to claim 1, is characterized in that loading resistor (4) is the resistance of the resistance of lumped parameter form or the loss of delay line itself of the take distributed constant form that is resistance.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110338597.7A CN102509864B (en) | 2011-11-01 | 2011-11-01 | Resistor loading bowtie pulse antenna communicated with tree-form delay lines |
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| CN201110338597.7A CN102509864B (en) | 2011-11-01 | 2011-11-01 | Resistor loading bowtie pulse antenna communicated with tree-form delay lines |
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| CN102509864A CN102509864A (en) | 2012-06-20 |
| CN102509864B true CN102509864B (en) | 2014-01-01 |
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| CN111755825B (en) * | 2020-06-23 | 2021-10-26 | 电子科技大学 | Broadband wide-angle scanning phased array antenna based on stacked patch type matching layer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN202308296U (en) * | 2011-11-01 | 2012-07-04 | 东南大学 | Resistance loaded bow-tie pulse antenna for communicating with tree delay lines |
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| 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 |
| US8405552B2 (en) * | 2007-04-16 | 2013-03-26 | Samsung Thales Co., Ltd. | Multi-resonant broadband antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN202308296U (en) * | 2011-11-01 | 2012-07-04 | 东南大学 | Resistance loaded bow-tie pulse antenna for communicating with tree delay lines |
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