CN102361165A - Delay line resistor loading gradual change grooved wire pulse antenna - Google Patents
Delay line resistor loading gradual change grooved wire pulse antenna Download PDFInfo
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- CN102361165A CN102361165A CN2011102661768A CN201110266176A CN102361165A CN 102361165 A CN102361165 A CN 102361165A CN 2011102661768 A CN2011102661768 A CN 2011102661768A CN 201110266176 A CN201110266176 A CN 201110266176A CN 102361165 A CN102361165 A CN 102361165A
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Abstract
The invention provides a delay line resistor loading gradual change grooved wire pulse antenna, especially relating to a resistor loading pulse antenna. The antenna is composed of gradual change grooved wire radiation patches (1), a medium substrate (2), a microstrip feed line (3), a delay line (4) and a loading resistor (5). An edge of gap between the two radiation patches opens to form a trumpet opening. A largest position of an end opening of the radiation patches is a radiation end (7) of the antenna. Another end of the opening is an open end of a grooved wire (8). One end of the microstrip feed line (3) is a feed terminal, and the other end of the microstrip feed line (3) is a transition section from the microstrip feed line to the grooved wire. The delay line (4) is on a back side of a substrate (2) of the two patches (1). The loading resistor (5) is distributed on the delay line (4). One end of each area of the delay line (4) goes through a metallization through hole (12) to connect with the radiation end (7), and another end is open-circuit. The antenna can reduce amplitude of a trailing pulse.
Description
Technical field
The present invention relates to a kind of pulse antenna, especially a kind of delay line resistance loads the tapered slot 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 in radiation waveform, 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.Tapered slot 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 tapered slot antenna is very extensive, and more application is also arranged in GPR.At present, for the tapered slot pulse antenna, the method for reduction tail pulse influence commonly used is the resistance Loading Method.It all is distributed load that existing resistance loads major part; This moment, resistance was between the feed end and radiation end of antenna; Loading resistor also can absorb the pulse energy that originally can radiate simultaneously at the residual impulse energy that absorbs the aerial radiation end, therefore adopts the loading of this kind resistance can reduce the radiation efficiency of antenna.The tip dimensions of tapered slot pulse antenna radiation simultaneously is relatively large; The end current distribution is bigger; A spot ofly place the resistance between feed end and the radiation end to load the residual impulse electric current can not effectively absorb antenna end, thus limited to the improvement of tail pulse adverse effect.
Summary of the invention
Technical problem:The present invention seeks to propose a kind of delay line resistance and load the tapered slot pulse antenna, this antenna can effectively reduce the tail pulse amplitude, and is less to the influence of antenna radiation efficiency simultaneously.
Technical scheme:Delay line resistance of the present invention loads the tapered slot pulse antenna and comprises a pair of tapered slot radiation patch, medium substrate, microstrip feed line, delay line and loading resistor; Two tapered slot radiation patch symmetry be positioned at medium substrate with one side, the conduction band of microstrip feed line, delay line and loading resistor are at the another side of medium substrate; The edge in slit opens the formation horn opening between two tapered slot radiation patch, and tapered slot radiation patch end openings maximum position is that aerial radiation is terminal, and the other end relative with horn opening is line of rabbet joint open end; The outer end of microstrip feed line is the feed end of antenna, and inner microstrip feed line before this is connected with the tapered slot radiation patch of another side by the conduction band of short circuit hole with microstrip feed line to the changeover portion of the line of rabbet joint then endways; Delay line is positioned at the zone at the medium substrate back side that two tapered slot radiation patch are comprised, and the outer end of each bar delay line is connected with the aerial radiation at the back side is terminal through the metallization via hole, opens a way in the inner; Loading resistor is distributed on each delay line.
Described microstrip feed line is to the changeover portion of the line of rabbet joint open end near the line of rabbet joint.
Delay line is printed, etching perhaps is placed on the medium substrate, or is suspended in the air above the medium substrate.
The radiation end of antenna is joined by densely distributed metallization via hole and delay line end, makes the terminal residual impulse energy of tapered slot pulse antenna radiation can as often as possible get into current path.
Delay line be shaped as back and forth reciprocally arrayed straight line or hair clip shape, its length is half the greater than the high workload wavelength of antenna, the length direction of lead is parallel with the main radiation direction of antenna.
Described delay line has many, is connected with the radiation end of antenna through the metallization via hole.
There are some discontinuous places on the delay line, it are connected, constitute the additional current paths that delay line resistance loads by loading resistor.At first from the feed end input of tapered slot pulse antenna, through microstrip feed line, little changeover portion that takes the line of rabbet joint to propagates on the line of rabbet joint pulse signal.Propagate into radiant section through the line of rabbet joint again; The radiation of radiation to antenna is terminal while propagating; The radiation end of antenna not the residual impulse energy of radiation get into the delay line that resistance loads through metallized via hole; Avoided at the radiation terminal open circuit and make the residual impulse energy of radiation not return the radiating element of antenna, formed radiation again and cause tail pulse; 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.Many delay line can make the terminal residual impulse energy of tapered slot pulse antenna radiation can as often as possible get into delay line, the more effective influence that reduces tail pulse.Because the direction of the most of line segment of delay line is parallel with the main radiation direction of tapered slot pulse antenna, thus on the delay line towards the energy of main radiation direction radiation seldom.And delay line the energy emission on main radiation direction does not exert an influence to the tapered slot pulse antenna in the space that it occupies.Because loading resistor does not absorb the pulse current of tapered slot radiation patch, this kind resistance load mode is also less to the adverse effect of antenna radiation efficiency simultaneously.The delay line open circuit also makes delay line need not cross over the slit between the paster in addition, 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 bar number of delay line, 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; The resistance that the tapered slot pulse antenna has been carried out delay line loads; Effectively reduce the amplitude of tail pulse in the radiation waveform, reduced the adverse effect of loading resistor paired pulses antenna radiation efficiency, delay line does not influence the normal radiation of antenna yet.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Have among the figure: tapered slot radiation patch 1, medium substrate 2, microstrip feed line 3, delay line 4; Loading resistor 5, the conduction band 6 of microstrip feed line, the radiation end 7 of antenna, the line of rabbet joint 8; The feed end 9 of antenna, little changeover portion 10 that takes the line of rabbet joint to, short circuit hole 11, metallization via hole 12.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
The technical scheme that the present invention adopted is: delay line resistance loads the tapered slot pulse antenna and is made up of a pair of tapered slot radiation patch, medium substrate, microstrip feed line, delay line and loading resistor; Wherein the tapered slot radiation patch is positioned at the one side of medium substrate, and the conduction band of microstrip feed line, delay line and loading resistor are positioned at the another side of medium substrate.Loading resistor is on delay line.Two tapered slot radiation patch are positioned at the same surface of medium substrate, and the edge in slit opens and forms flaring opening between two tapered slot radiation patch, and the position that the radiation patch end openings is maximum also is that the radiation of antenna is terminal.One section of the other direction end of gap opening, the edge in slit is parallel between two tapered slot radiation patch, forms the line of rabbet joint, and one section of the paster change width is the radiant section of antenna between the line of rabbet joint and the radiation end; One end of the line of rabbet joint is an open circuit, the radiant section of another termination antenna of the line of rabbet joint.The ground plane of microstrip feed line is exactly a slice tapered slot radiation patch, and an end of microstrip feed line is the feed end of antenna, and the other end of microstrip feed line is little changeover portion that takes the line of rabbet joint to; Changeover portion is near the open end of the line of rabbet joint, and at changeover portion, the conduction band of little band strides across the slit above line of rabbet joint medium substrate, is connected with another sheet tapered slot paster through the edge of short circuit hole in the slit then.Delay line is positioned at the zone at the medium substrate back side of two tapered slot radiation patch.The medium substrate back side in each tapered slot radiation patch is distributed with many delay lines, and an end of every delay line is connected with the radiation of antenna is terminal through metallized via hole, and the other end of delay line is an open circuit.There are some discontinuous places on the delay line, it are connected, constitute the additional current paths that delay line resistance loads by loading resistor.Pulse signal at first adds from the feed end of tapered slot pulse antenna, and through microstrip feed line, little changeover portion that takes the line of rabbet joint to propagates on the line of rabbet joint.Propagate into radiant section through the line of rabbet joint again; The radiation of radiation to antenna is terminal while propagating; The radiation end of antenna not the residual impulse energy of radiation get into the delay line that resistance loads through the metallization via hole; Avoided at the radiation terminal open circuit and make the residual impulse energy of radiation not return the radiating element of antenna, formed radiation again and cause tail pulse; 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.Many delay line makes the terminal residual impulse energy of tapered slot pulse antenna radiation can as often as possible get into current path, thereby can more effectively reduce the influence of tail pulse.Delay line printing or etching or stick on the medium substrate also can be suspended in the air.Because the direction of the most of line segment of delay line is parallel with the main radiation direction of tapered slot pulse antenna, thus on the delay line towards the energy of main radiation direction radiation seldom.And delay line the energy emission on main radiation direction does not exert an influence to the tapered slot pulse antenna in the space that it occupies.Because resistance does not absorb the pulse current on the aerial radiation paster, this kind resistance loads also less to the adverse effect of antenna radiation efficiency simultaneously.The delay line open circuit also makes delay line need not cross over the slit between the paster in addition, 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 bar number of delay line, the length of delay line etc. can change the amplitude of tail pulse in the pulse signal.
Structurally; This delay line resistance loads the tapered slot pulse antenna and is made up of tapered slot radiation patch 1, medium substrate 2, microstrip feed line 3, delay line 4 and loading resistor 5; Wherein conduction band 6, delay line 4, the loading resistor 5 of tapered slot radiation patch 1 and microstrip feed line 3 lay respectively at the both sides of same medium substrate 2, and loading resistor 5 is distributed on the delay line 4.The edge in slit opens and forms flaring opening between two tapered slot radiation patch 1, and the position that radiation patch 1 end openings is maximum also is the radiation terminal 7 of antenna; The edge in slit is parallel between one section of the direction end opposite with radiation terminal 7, two tapered slot radiation patch, forms the line of rabbet joint 8, and one section of the variation of paster gap width is the radiant section of antenna between the line of rabbet joint 8 and the radiation terminal 7; One end of the line of rabbet joint is an open circuit, the radiant section of another termination antenna of the line of rabbet joint; The ground plane of microstrip feed line 3 is exactly a slice tapered slot radiation patch 1, and an end of microstrip feed line 3 is feed ends 9 of antenna, and the other end of microstrip feed line 3 is little changeover portions 10 that take the line of rabbet joint to; Changeover portion 10 is near the open end of the line of rabbet joint 8, and at changeover portion 10, little conduction band 6 with 3 strides across the slit above the medium substrate 2 of the line of rabbet joint 8, is connected with another sheet tapered slot paster 1 through the edge of short circuit hole 11 in the slit then.Delay line 4 is positioned at the zone at two tapered slot radiation patch, 1 pairing medium substrate, 2 back sides; Each tapered slot radiation patch 1 right medium substrate 2 back sides be distributed with many delay lines 4; One end of these delay lines 4 is connected with the radiation terminal 7 of antenna through metallization via hole 12, and the other end of delay line 4 is open circuits.Delay line 4 can be rectilinear wire, also can be the hairpin lead, and the length of delay line 4 is half the or more greater than antenna maximum functional wavelength usually.Short circuit hole 11 or metallization via hole 12 can be metal column or hollow metal via hole.Be distributed with loading resistor 5 on the delay line 4, loading resistor 5 can be the resistance of distributed constant form, and this moment, delay line 4 itself was a lossy transmission, and loading resistor 5 is provided by the loss of transmission line; Also can be the resistance of lumped parameter form.There are some discontinuous places on the delay line 4, it are connected by loading resistor 5.Delay line 4 constitutes the additional current paths that delay line resistance loads with loading resistor 5.
On making, the manufacturing process that this delay line resistance loads the tapered slot pulse antenna can adopt semiconductor technology, ceramic process, laser technology or printed circuit technology.This delay line resistance loads the tapered slot pulse antenna and is made up of tapered slot radiation patch 1, medium substrate 2, microstrip feed line 3, delay line 4 and 5 of loading resistors; Wherein tapered slot radiation patch 1 is made up of the good conductor material of electric conductivity; Be positioned at the same surface of medium substrate 2, medium substrate 2 is wanted the alap dielectric material of service wear.Delay line 4 is produced on the opposite side of medium substrate 2, and the length of delay line 4 is half the or more greater than antenna maximum functional wavelength usually, so each bar delay line 4 can be rectilinear wire, perhaps is made as the hairpin lead to guarantee the delay line long enough.Be distributed with loading resistor 5 on the delay line 4, loading resistor 5 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 4, at this moment can be less with or without loading resistor 5, the conductor resistances of delay line 4 itself have just replaced the effect of loading resistor 5.
According to the above, just can realize the present invention.
Claims (7)
1. a delay line resistance loads the tapered slot pulse antenna, it is characterized in that this antenna comprises a pair of tapered slot radiation patch (1), medium substrate (2), microstrip feed line (3), delay line (4) and loading resistor (5); What two tapered slot radiation patch (1) were symmetrical is positioned at medium substrate (2) with one side, and the conduction band of microstrip feed line (6), delay line (4) and loading resistor (5) are at the another side of medium substrate (2); The edge in slit opens the formation horn opening between two tapered slot radiation patch (1), and tapered slot radiation patch (1) end openings maximum position is aerial radiation terminal (7), and the other end relative with horn opening is the line of rabbet joint (8) open end; The outer end of microstrip feed line (2) is the feed end (9) of antenna, and inner microstrip feed line before this is connected with the tapered slot radiation patch (1) of another side by short circuit hole (11) conduction band (6) with microstrip feed line to the changeover portion (10) of the line of rabbet joint then endways; Delay line (4) is positioned at the zone at medium substrate (2) back side that two tapered slot radiation patch (1) are comprised, and the outer end of each bar delay line (4) is connected with the aerial radiation terminal (7) at the back side through metallization via hole (12), opens a way in the inner; Loading resistor (5) is distributed on each delay line (4).
2. delay line resistance according to claim 1 loads the tapered slot pulse antenna, it is characterized in that described microstrip feed line (3) arrives the open end of the changeover portion (10) of the line of rabbet joint (8) near the line of rabbet joint (8).
3. delay line resistance according to claim 1 and 2 loads the tapered slot pulse antenna, it is characterized in that delay line (4) is printed, etching perhaps is placed on the medium substrate (2), or is suspended in the air above the medium substrate (2).
4. delay line resistance according to claim 1 loads the tapered slot pulse antenna; The radiation terminal (7) that it is characterized in that antenna is joined by densely distributed metallization via hole (12) and delay line (4) end, makes the residual impulse energy of tapered slot pulse antenna radiation terminal (7) can as often as possible get into current path.
5. delay line resistance according to claim 1 and 2 loads the tapered slot pulse antenna; What it is characterized in that delay line (4) is shaped as back and forth reciprocally arrayed straight line or hair clip shape; Its length is half the greater than the high workload wavelength of antenna, and the length direction of lead is parallel with the main radiation direction of antenna.
6. delay line resistance according to claim 1 loads the tapered slot pulse antenna, it is characterized in that loading resistor (5) is the resistance of lumped parameter form or is the resistance of the distributed constant form of resistance with the loss of delay line (4) itself.
7. delay line resistance according to claim 1 and 2 loads the tapered slot pulse antenna, it is characterized in that described delay line (4) has many, is connected with the radiation terminal (7) of antenna through metallization via hole (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110266176.8A CN102361165B (en) | 2011-09-09 | 2011-09-09 | Delay line resistor loading gradual change grooved wire pulse antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110266176.8A CN102361165B (en) | 2011-09-09 | 2011-09-09 | Delay line resistor loading gradual change grooved wire pulse antenna |
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| Publication Number | Publication Date |
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| CN102361165A true CN102361165A (en) | 2012-02-22 |
| CN102361165B CN102361165B (en) | 2014-08-13 |
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Citations (6)
| 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 |
| CN1697256A (en) * | 2005-06-15 | 2005-11-16 | 东南大学 | Impulse antenna of having delay line |
| CN1697257A (en) * | 2005-06-15 | 2005-11-16 | 东南大学 | Delay line loaded impulse antenna |
| CN101710653A (en) * | 2009-12-16 | 2010-05-19 | 电子科技大学 | Time domain pulse antenna with metallic back cavity having gradually changing type side wall |
| CN101895011A (en) * | 2010-06-13 | 2010-11-24 | 南京邮电大学 | Wideband printing antenna with symmetrical dipole-antipodal slot line composite structure |
| CN202217789U (en) * | 2011-09-09 | 2012-05-09 | 东南大学 | Delay line resistor loaded tapered slot line pulse antenna |
-
2011
- 2011-09-09 CN CN201110266176.8A patent/CN102361165B/en not_active Expired - Fee Related
Patent Citations (6)
| 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 |
| CN1697256A (en) * | 2005-06-15 | 2005-11-16 | 东南大学 | Impulse antenna of having delay line |
| CN1697257A (en) * | 2005-06-15 | 2005-11-16 | 东南大学 | Delay line loaded impulse antenna |
| CN101710653A (en) * | 2009-12-16 | 2010-05-19 | 电子科技大学 | Time domain pulse antenna with metallic back cavity having gradually changing type side wall |
| CN101895011A (en) * | 2010-06-13 | 2010-11-24 | 南京邮电大学 | Wideband printing antenna with symmetrical dipole-antipodal slot line composite structure |
| CN202217789U (en) * | 2011-09-09 | 2012-05-09 | 东南大学 | Delay line resistor loaded tapered slot line pulse antenna |
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| CN102361165B (en) | 2014-08-13 |
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Granted publication date: 20140813 Termination date: 20170909 |