CN102709683A - Pulse antenna with accessing delay line and gradual-change slot line in tree-form - Google Patents
Pulse antenna with accessing delay line and gradual-change slot line in tree-form Download PDFInfo
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- CN102709683A CN102709683A CN2011104425100A CN201110442510A CN102709683A CN 102709683 A CN102709683 A CN 102709683A CN 2011104425100 A CN2011104425100 A CN 2011104425100A CN 201110442510 A CN201110442510 A CN 201110442510A CN 102709683 A CN102709683 A CN 102709683A
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Abstract
The invention discloses a pulse antenna with accessing a delay line and a gradual-change slot line in a tree-form, which is a pulse antenna delaying a tailing pulse. An edge of a gap between two radiation pasters (1) is expanded to form a horn-shaped opening; the maximum position of a tail end opening of the radiation pasters (1) is an antenna radiation tail end (7), and the other end of the gap opening is an open circuit end of the slot line (8); one end of a microstrip (3) is a feed end (9), and the other end of the microstrip (3) is a transition section (10) from the microstrip to the slot line; an access line (4) and the delay line (5) are arranged in a back zone of a base board (2) of the two pasters (1); each branch of the zone access line (4) converges into a convergent point (12), tail ends of the branches pass through a metalized through-hole (13) and are connected with the antenna radiation tail end (7); and one end of the delay line (5) is connected with the convergent point (12), and the other end is the open circuit. According to the antenna, an arise time of the tailing pulse can be delayed in the condition of a small size.
Description
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Technical field
The present invention relates to a kind of pulse antenna, especially a kind of tree-like access delay line tapered slot pulse antenna belongs to the technical field that pulse antenna is made.
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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.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, known method is to adopt the amplitude of resistance Loading Method reduction tail pulse, to reduce its influence to echo signal.The subject matter of these loading methods is: the resistance of loading can cause the reduction of pulse antenna radiation efficiency, and the same day lineman do that frequency range is higher, the size of antenna hour, more be difficult to solve the tail pulse problem.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 access delay line tapered slot pulse antenna; This antenna is under the little situation of size; The time that tail pulse occurs in the delay pulse aerial radiation impulse waveform, avoid the interference of tail pulse to echo signal, and less to the influence of antenna radiation efficiency.
Technical scheme:Tree-like access delay line tapered slot pulse antenna of the present invention comprises a pair of tapered slot radiation patch, medium substrate, microstrip feed line, tree-like tie-in line and delay line; Two tapered slot radiation patch symmetry be positioned at medium substrate with one side, the conduction band of microstrip feed line, tree-like tie-in line and delay line are at the another side of medium substrate; The edge in slit opens the formation horn opening between two 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; The branch of tree-like tie-in line converges at convergent point and connects delay line, and the end of tree-like tie-in line branch other direction is connected with the radiation at the back side is terminal through the metallization via hole; Delay line one end is connected with convergent point, and the other end is an open circuit.
Described microstrip feed line is to the changeover portion of the line of rabbet joint open end near the line of rabbet joint.
Tree-like tie-in line and delay line are 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 the branch end of densely distributed metallization via hole and tree-like tie-in line, 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, the length direction of lead is parallel with the main radiation direction of antenna.
The length long enough of delay line is to guarantee that the propagation time of pulse energy on delay line is greater than the time of delay of needed tail pulse with respect to the primary radiation pulse.
Tree-like tie-in line and delay line constitute the additional current path of antenna.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 tree-like tie-in line and delay line through metallized via hole; Tree-like tie-in line and delay line are that the electric current of residual impulse energy provides additional current paths, have avoided the radiation terminal open circuit and make the residual impulse energy of radiation not return the radiating element of antenna, form radiation again and cause tail pulse.The densely distributed metallization via hole that links to each other with tree-like tie-in line makes 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.The length of tree-like tie-in line is much smaller than delay line because the direction of the most of line segment of delay line is parallel with the main radiation direction of tapered slot antenna, so on the delay line towards the energy of main radiation direction radiation seldom.And the radiation of hair clip shape adjacent segments has negative function; So the radiation when pulse signal passes through delay line is very little, has only to hairpin-shaped end, owing to the reason of line segment direction and the negative function that does not have adjacent segments; The radiation meeting is more intense, forms tail pulse.Because the delayed action of delay line, this tail pulse has had delay in time with respect to the primary radiation pulse of antenna.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.Owing to there not being loading resistor, also less simultaneously to the adverse effect of antenna radiation efficiency.Hairpin-shaped delay line can provide long as far as possible current path in less dimensional space, is particularly suitable for the high small size antenna of working frequency range.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.Thickness, the dielectric constant of medium substrate material and the length of magnetic permeability, tree-like tie-in line and delay line etc. of adjustment medium substrate can change the time of delay of tail pulse in the pulse signal.
Beneficial effect:The invention has the beneficial effects as follows; The tapered slot pulse antenna has been carried out tree-like access delay line to load; Make under small size antenna condition, can delay pulse aerial radiation impulse waveform in time of occurring of tail pulse, avoid the interference of tail pulse to echo signal; And the influence to antenna radiation efficiency is less, and delay line does not influence the normal radiation of antenna yet.
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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, tree-like tie-in line 4, delay line 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, tie-in line convergent point 12, metallization via hole 13.
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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 access delay line tapered slot pulse antenna is made up of a pair of tapered slot radiation patch, medium substrate, microstrip feed line, a pair of tree-like tie-in line and delay line; Wherein the tapered slot radiation patch is positioned at the one side of medium substrate, and the conduction band of microstrip feed line, tree-like tie-in line and delay line are positioned at the another side of medium substrate; 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 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 variation of paster gap 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 the medium substrate of the line of rabbet joint, is connected with another sheet tapered slot paster through the edge of short circuit hole in the slit then.Tree-like tie-in line and delay line are positioned at the zone at the medium substrate back side of tapered slot radiation patch.The medium substrate back side of each tapered slot radiation patch is distributed with a tree-like tie-in line and delay line, and the branch of tree-like tie-in line converges at a place radially, i.e. the convergent point of tie-in line.One end of delay line is connected with convergent point, and the other end is an open circuit, and the length long enough of delay line is to guarantee that the propagation time of pulse energy on delay line is greater than the time of delay of needed tail pulse with respect to the primary radiation pulse.Each tree-like tie-in line branch is terminal at its other direction, is connected with the radiation of antenna is terminal through metallized via hole, and the dense even distribution of via hole of metallizing is with the residual impulse energy of absorbed radiation end as far as possible.Tree-like tie-in line and delay line constitute the additional current path of antenna.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 tree-like tie-in line and delay line through the metallization via hole; Tie-in line and delay line be together for the electric current of residual impulse energy provides additional current paths, avoided the radiation terminal open circuit and make the residual impulse energy of radiation not return the radiating element of antenna, forms radiation again and cause tail pulse.Densely distributed metallization via hole makes the terminal residual impulse energy of tapered slot pulse antenna radiation can as often as possible get into current path, the more effective influence that reduces tail pulse.The shape of delay line is a straight line, or hair clip shape, and tree-like like this tie-in line and delay line can provide long as far as possible current path in less dimensional space, are particularly suitable for the high small size antenna of working frequency range.The length of tree-like tie-in line is much smaller than delay line because the direction of the most of line segment of delay line is parallel with the main radiation direction of tapered slot antenna, so on the delay line towards the energy of main radiation direction radiation seldom.And the radiation of hair clip shape adjacent segments has negative function; So the radiation when pulse signal passes through delay line is very little, has only to hairpin-shaped end, owing to the reason of line segment direction and the negative function that does not have adjacent segments; The radiation meeting is more intense, forms tail pulse.Because the delayed action of delay line, this tail pulse has had delay in time with respect to the primary radiation pulse of antenna.Owing to there not being loading resistor, also less simultaneously to the adverse effect of antenna radiation efficiency.And tree-like tie-in line 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.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.Thickness, the dielectric constant of medium substrate material and the length of magnetic permeability, tree-like tie-in line and delay line etc. of adjustment medium substrate can change the time of delay of tail pulse in the pulse signal.
Structurally; This tree-like access delay line tapered slot pulse antenna is made up of tapered slot radiation patch 1, medium substrate 2, microstrip feed line 3, tree-like tie-in line 4 and delay line 5, and wherein conduction band 6, tree-like tie-in line 4, the delay line 5 of tapered slot radiation patch 1 and microstrip feed line 3 lay respectively at the both sides of same medium substrate 2.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 is the radiation terminal 7 of antenna; One section of the direction end opposite with the radiation of antenna terminal 7, the edge in two tapered slot radiation patch slits is parallel, 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 8 is open circuits, the radiant section of another termination antenna of the line of rabbet joint 8; 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 10,6 of the microstrip feed line of microstrip feed line 3 strides across the slit above the line of rabbet joint 8 medium substrates 2, is connected with another sheet tapered slot paster 1 through the edge of short circuit hole 11 in the slit then.Tree-like tie-in line 4 and delay line 5 are positioned at the zone at 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 a tree-like tie-in line 4; Tree-like tie-in line 4 branches converge at tie-in line convergent point 12 radially; The branch of each tree-like tie-in line 4 is terminal at its other direction, is connected with the radiation terminal 7 of antenna through metallization via hole 13.One end of delay line 5 is connected with convergent point 12, and the other end is an open circuit, and the length long enough of delay line 5 is to guarantee that the propagation time of pulse energy on delay line is greater than the time of delay of needed tail pulse with respect to the primary radiation pulse.The shape of delay line 5 can be linear, also can be hair clip shape.Tree-like tie-in line and delay line printing or etching or stick on the medium substrate also can be suspended in the air.Short circuit hole 11 or metallization via hole 13 can be metal column or hollow metal via hole, and via hole 13 dense even distributions penetrate medium substrate 2, link to each other one by one with the branch end of each tree-like tie-in line 4.The current path that tree-like tie-in line 4 is additional with delay line 5 antennas.
On making, the manufacturing process of this tree-like access delay line tapered slot pulse antenna can adopt semiconductor technology, ceramic process, laser technology or printed circuit technology.This tree-like access delay line tapered slot pulse antenna is made up of tapered slot radiation patch 1, medium substrate 2, microstrip feed line 3, tree-like tie-in line 4 and 5 in delay line; 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.Tree-like tie-in line 4 and delay line 5 are produced on the opposite side of medium substrate 2; The length long enough of delay line 5; To guarantee that the propagation time of pulse energy on delay line 5 is greater than the time of delay of needed tail pulse with respect to the primary radiation pulse; Therefore the straight line that is shaped as of delay line 5 perhaps is made as hair clip shape, to guarantee that delay line 5 can long enough in the little dimensional space of antenna.
According to the above, just can realize the present invention.
Claims (6)
1. a tree-like access delay line tapered slot pulse antenna is characterized in that this tree-like access delay line tapered slot pulse antenna comprises a pair of tapered slot radiation patch (1), medium substrate (2), microstrip feed line (3), tree-like tie-in line (4) and delay line (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), tree-like tie-in line (4) and delay line (5) are at the another side of medium substrate (2); The edge in slit opens the formation horn opening between two 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 (3) is feed end (9), and inner microstrip feed line before this is connected microstrip feed line conduction band (6) by short circuit hole (11) to the changeover portion (10) of the line of rabbet joint then endways with the tapered slot radiation patch (1) of another side; The branch of tree-like tie-in line (4) converges at convergent point (12) and connects delay line (5), and the end of tree-like tie-in line (4) branch other direction is connected with the radiation terminal (7) at the back side through metallization via hole (13); Delay line (5) one ends are connected with convergent point (12), and the other end is an open circuit.
2. tree-like access delay line tapered slot pulse antenna according to claim 1 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. tree-like access delay line tapered slot pulse antenna according to claim 1 and 2; It is characterized in that tree-like tie-in line (4) and delay line (5) are printed, etching perhaps is placed on the medium substrate (2), or be suspended in the air above the medium substrate (2).
4. tree-like access delay line tapered slot pulse antenna according to claim 1; The radiation terminal (7) that it is characterized in that antenna is joined by the branch end of densely distributed metallization via hole (13) with tree-like tie-in line (4), makes the residual impulse energy of tapered slot pulse antenna radiation terminal (7) can as often as possible get into current path.
5. tree-like access delay line tapered slot pulse antenna according to claim 1 and 2, what it is characterized in that delay line (5) is shaped as back and forth reciprocally arrayed straight line or hair clip shape, and the length direction of lead is parallel with the main radiation direction of antenna.
6. tree-like access delay line tapered slot pulse antenna according to claim 1 and 2; The length long enough that it is characterized in that delay line (5) is to guarantee that the propagation time of pulse energy on delay line is greater than the time of delay of needed tail pulse with respect to the primary radiation pulse.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104425100A CN102709683B (en) | 2011-12-26 | 2011-12-26 | Pulse antenna with accessing delay line and gradual-change slot line in tree-form |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104425100A CN102709683B (en) | 2011-12-26 | 2011-12-26 | Pulse antenna with accessing delay line and gradual-change slot line in tree-form |
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| CN102709683A true CN102709683A (en) | 2012-10-03 |
| CN102709683B CN102709683B (en) | 2013-12-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230143858A1 (en) * | 2021-11-09 | 2023-05-11 | Pctel, Inc. | Thin metal vivaldi antenna systems |
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| US5189433A (en) * | 1991-10-09 | 1993-02-23 | The United States Of America As Represented By The Secretary Of The Army | Slotted microstrip electronic scan antenna |
| US6900770B2 (en) * | 2003-07-29 | 2005-05-31 | Bae Systems Information And Electronic Systems Integration Inc. | Combined ultra wideband Vivaldi notch/meander line loaded antenna |
| CN1697257A (en) * | 2005-06-15 | 2005-11-16 | 东南大学 | Delay line loaded impulse antenna |
| CN102157769A (en) * | 2011-03-25 | 2011-08-17 | 东南大学 | Microstrip line-slot line transition structure with stop band |
| CN202384496U (en) * | 2011-12-26 | 2012-08-15 | 南京邮电大学 | Tapered slot pulse antenna with tree-shaped access lines and delay lines |
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2011
- 2011-12-26 CN CN2011104425100A patent/CN102709683B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5189433A (en) * | 1991-10-09 | 1993-02-23 | The United States Of America As Represented By The Secretary Of The Army | Slotted microstrip electronic scan antenna |
| US6900770B2 (en) * | 2003-07-29 | 2005-05-31 | Bae Systems Information And Electronic Systems Integration Inc. | Combined ultra wideband Vivaldi notch/meander line loaded antenna |
| CN1697257A (en) * | 2005-06-15 | 2005-11-16 | 东南大学 | Delay line loaded impulse antenna |
| CN102157769A (en) * | 2011-03-25 | 2011-08-17 | 东南大学 | Microstrip line-slot line transition structure with stop band |
| CN202384496U (en) * | 2011-12-26 | 2012-08-15 | 南京邮电大学 | Tapered slot pulse antenna with tree-shaped access lines and delay lines |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230143858A1 (en) * | 2021-11-09 | 2023-05-11 | Pctel, Inc. | Thin metal vivaldi antenna systems |
| US11855345B2 (en) * | 2021-11-09 | 2023-12-26 | Pctel, Inc. | Thin metal Vivaldi antenna systems |
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