CN102361161A - Pulse antenna for communicating delay lines and gradient slot line by tree access - Google Patents
Pulse antenna for communicating delay lines and gradient slot line by tree access Download PDFInfo
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- CN102361161A CN102361161A CN2011102654181A CN201110265418A CN102361161A CN 102361161 A CN102361161 A CN 102361161A CN 2011102654181 A CN2011102654181 A CN 2011102654181A CN 201110265418 A CN201110265418 A CN 201110265418A CN 102361161 A CN102361161 A CN 102361161A
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Abstract
The invention relates to a pulse antenna for communicating delay lines and a gradient slot line by tree access. The pulse antenna comprises gradient slot line radiating patches (1), medium substrates (2), a microstrip feeder line (3), tree access lines (4) and communicating delay lines (5), wherein the edge of a gap between two gradient slot line radiating patches (1) is opened to form a flared opening; the largest opened positions at the tail ends of the gradient slot line radiating patches (1) are radiating tail ends (7) of the antenna; the other end of the opening of the gap is an open end of a slot line (8); one end of the microstrip feeder line (3) is a feed end (9), and the other end of the microstrip feeder line (3) is a transition section (10) from a microstrip to the slot line; the tree access lines (4) and the communicating delay lines (5) are positioned at the areas of the back surfaces of the medium substrates (2) of the two patches; the branch of the tree access line (4) at each area converges into a convergent point (12); the two convergent points (12) are connected by the communicating delay lines (5); and the tail ends of the branches of the tree access line (4) are connected with the radiating tail ends (7) of the antenna by metallized via holes (13). In the antenna, the occurrence time of tailing pulse can be delayed under the small-sized condition.
Description
Technical field
The present invention relates to a kind of pulse antenna, especially a kind of tree-like access is communicated with delay line 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, so can produce tail pulse in the aerial radiation waveform.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 resistance to load the amplitude that reduces 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.See from the feed end of antenna that in addition antenna is an open circuit, is unfavorable for the radiation of transient impulse energy.
Summary of the invention
Technical problem:The present invention seeks to propose a kind of tree-like access and be communicated with delay line tapered slot pulse antenna; This antenna can be under the little condition 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 of the present invention is communicated with delay line tapered slot pulse antenna and comprises a pair of tapered slot radiation patch, medium substrate, microstrip feed line, tree-like tie-in line and be communicated with 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 be communicated with the another side of delay line at 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 the logical in succession delay line of convergent point, 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; Be communicated with delay line one end and be connected with convergent point, the other end with about the connection of two sections connection delay lines.
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 is printed with the connection delay line, 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.
What be communicated with delay line 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.
The length long enough that is communicated with 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.
Be communicated with delay line and tree-like tie-in line and constituted the current path that is communicated with.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.Radiation at antenna is terminal; Tie-in line is that the electric current of the residual impulse energy of radiation does not provide additional current paths with being communicated with delay line; Avoided the radiation terminal open circuit and made the residual impulse energy of radiation not return the radiating element of antenna, formed radiation again and cause tail pulse.The residual impulse energy gets into tree-like tie-in line and is communicated with delay line through metallized via hole.The length of tree-like tie-in line is much smaller than the connection delay line, and the direction of the most of line segment of connection delay line is parallel to the main radiation direction of antenna, and it is less therefore to be communicated with the radiation of delay line on main radiation direction; And the radiation of hair clip shape adjacent segments has negative function; So the radiation when pulse signal passes through to be communicated with 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 be communicated with the delayed action of delay line, this tail pulse has had delay in time with respect to the primary radiation pulse of antenna.And tree-like tie-in line does not influence the energy emission of antenna in main radiation direction with the connection delay line in its occupied space yet.See from feed end that in addition the current path of connection more helps the radiation of pulse energy.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 appearance of more effective delay tail pulse.Owing to there not being loading resistor, also less simultaneously to the adverse effect of antenna radiation efficiency.Tree-like tie-in line can provide long as far as possible current path in less dimensional space with the connection delay line, is particularly suitable for the high small size antenna of working frequency range.Thickness, the dielectric constant of medium substrate material and the length of magnetic permeability, tie-in line and connection 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 connection delay line that the tapered slot pulse antenna has been carried out tree-like tie-in line loads; Make under small size antenna condition; The time that tail pulse occurs in can delay pulse aerial radiation impulse waveform, avoid the interference of tail pulse to echo signal, and less to the influence of antenna radiation efficiency.
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; Be communicated with delay line 5, the conduction band 6 of microstrip feed line, the radiation of antenna terminal 7; 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.
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 is communicated with delay line tapered slot pulse antenna and is made up of a pair of tapered slot radiation patch, medium substrate, microstrip feed line, a pair of tree-like tie-in line, connection 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, connection 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 connection delay line are positioned at the zone at two the pairing medium substrate of tapered slot radiation patch back sides.Be distributed with a tree-like tie-in line at the medium substrate back side of each tapered slot radiation patch, the branch of tree-like tie-in line converges at a place radially, i.e. the convergent point of tie-in line.The tree-like tie-in line in two zones links to each other through being communicated with delay line through the convergent point of tie-in line.The length long enough that is communicated with delay line is being communicated with propagation time on the delay line greater than the time of delay of needed tail pulse with respect to the primary radiation pulse to guarantee pulse energy.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.Be communicated with delay line and tree-like tie-in line and constituted the current path that is communicated with.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.Radiation at antenna is terminal; Tie-in line is that the electric current of the residual impulse energy of radiation does not provide additional current paths with being communicated with delay line; Avoided the radiation terminal open circuit and made the residual impulse energy of radiation not return the radiating element of antenna, formed radiation again and cause tail pulse.The residual impulse energy gets into tree-like tie-in line and is communicated with delay line through metallized via hole; The length of tree-like tie-in line is much smaller than the connection delay line, and the direction of the most of line segment of hairpin-shaped connection delay line is parallel to the main radiation direction of antenna, and it is less therefore to be communicated with the radiation of delay line on main radiation direction; And the radiation of hair clip shape adjacent segments has negative function; So the radiation of pulse signal when being communicated with delay line is very little, have only to hairpin-shaped end, owing to the reason of line segment direction with there is not the negative function of adjacent segments; The radiation meeting is more intense, forms tail pulse.Because be communicated with the delayed action of delay line, this tail pulse has had delay in time with respect to the primary radiation pulse of antenna.And the connection delay line does not influence the energy emission of antenna in main radiation direction in its occupied space yet.See from feed end that in addition the current path of connection more helps the radiation of pulse energy.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.Tree-like tie-in line can provide long as far as possible current path in less dimensional space with the connection delay line, is particularly suitable for the high small size antenna of working frequency range.Thickness, the dielectric constant of medium substrate material and the length of magnetic permeability, tie-in line and connection 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 is communicated with delay line tapered slot pulse antenna and is made up of tapered slot radiation patch 1, medium substrate 2, microstrip feed line 3, tree-like tie-in line 4 and connection delay line 5, and wherein the conduction band 6 of the microstrip feed line of tapered slot radiation patch 1 and microstrip feed line 3, tree-like tie-in line 4, connection delay line 5 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 radiation 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 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; Little open end that takes the changeover portion 10 of the line of rabbet joint near the line of rabbet joint 8 to; At little changeover portion that takes the line of rabbet joint to; The conduction band 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, be 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 connection 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 tree-like tie-in line 4 in two zones links to each other through being communicated with delay line 5 through tie-in line convergent point 12; 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 respectively through metallization via hole 13.Be communicated with delay line 5 shapes and can be hair clip shape, its length long enough is being communicated with propagation time on the delay line greater than the time of delay of needed tail pulse with respect to the primary radiation pulse to guarantee pulse energy.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.Tree-like tie-in line 4 and the current path that is communicated with delay line 5 formation connections.
On making, the manufacturing process that this tree-like access is communicated with delay line tapered slot pulse antenna can adopt semiconductor technology, ceramic process, laser technology or printed circuit technology.This tree-like access is communicated with delay line tapered slot pulse antenna and is made up of tapered slot radiation patch 1, medium substrate 2, microstrip feed line 3, tree-like tie-in line 4,5 in delay line of connection; 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 connection delay line 5 are produced on the opposite side of medium substrate 2; The length long enough that is communicated with delay line 5; To guarantee that pulse energy is being communicated with propagation time on the delay line greater than the time of delay of needed tail pulse with respect to the primary radiation pulse; Therefore the shape that is communicated with delay line 5 is made as hair clip shape, can long enough to guarantee in the little dimensional space of antenna, being communicated with delay line 5.
According to the above, just can realize the present invention.
Claims (6)
1. a tree-like access is communicated with delay line tapered slot pulse antenna, it 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 is communicated with 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 connection 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 the logical in succession delay line (5) of convergent point (12), 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); Be communicated with delay line (5) one ends and be connected with convergent point (12), the other end with about the connection of two sections connection delay lines.
2. tree-like access according to claim 1 is communicated with delay line 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. 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 connection delay line (5) are printed, etching perhaps is placed on the medium substrate (2), or is suspended in the air above the medium substrate (2).
4. tree-like access according to claim 1 is communicated with delay line tapered slot pulse antenna; 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 according to claim 1 and 2 is communicated with delay line tapered slot pulse antenna, and what it is characterized in that being communicated with 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 according to claim 1 and 2 is communicated with delay line tapered slot pulse antenna; It is characterized in that being communicated with the length long enough of delay line (5), 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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| CN201110265418.1A CN102361161B (en) | 2011-09-08 | 2011-09-08 | Pulse antenna for communicating delay lines and gradient slot line by tree access |
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| CN201110265418.1A CN102361161B (en) | 2011-09-08 | 2011-09-08 | Pulse antenna for communicating delay lines and gradient slot line by tree access |
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| CN102361161A true CN102361161A (en) | 2012-02-22 |
| CN102361161B CN102361161B (en) | 2014-01-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305057A (en) * | 2015-11-27 | 2016-02-03 | 哈尔滨工业大学 | Feed structure of air integrated waveguide |
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| 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 |
| CN1697256A (en) * | 2005-06-15 | 2005-11-16 | 东南大学 | Impulse antenna of having delay line |
| US20080252530A1 (en) * | 2007-04-16 | 2008-10-16 | Ki-Hyoung Bae | Multi-resonant broadband antenna |
| CN202217788U (en) * | 2011-09-08 | 2012-05-09 | 东南大学 | Tree-shaped access connected delay line tapered slot line pulse antenna |
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2011
- 2011-09-08 CN CN201110265418.1A patent/CN102361161B/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 |
| CN1697256A (en) * | 2005-06-15 | 2005-11-16 | 东南大学 | Impulse antenna of having delay line |
| US20080252530A1 (en) * | 2007-04-16 | 2008-10-16 | Ki-Hyoung Bae | Multi-resonant broadband antenna |
| CN202217788U (en) * | 2011-09-08 | 2012-05-09 | 东南大学 | Tree-shaped access connected delay line tapered slot line pulse antenna |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105305057A (en) * | 2015-11-27 | 2016-02-03 | 哈尔滨工业大学 | Feed structure of air integrated waveguide |
| CN105305057B (en) * | 2015-11-27 | 2018-10-09 | 哈尔滨工业大学 | A kind of feed structure of air integrated waveguide |
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Granted publication date: 20140101 Termination date: 20170908 |