CN102361169B - Non-coplanar delay line resistance loading antipodal Vivaldi pulse antenna - Google Patents
Non-coplanar delay line resistance loading antipodal Vivaldi pulse antenna Download PDFInfo
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- CN102361169B CN102361169B CN201110318941.6A CN201110318941A CN102361169B CN 102361169 B CN102361169 B CN 102361169B CN 201110318941 A CN201110318941 A CN 201110318941A CN 102361169 B CN102361169 B CN 102361169B
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Abstract
The invention discloses a non-coplanar delay line resistance loading antipodal Vivaldi pulse antenna, which consists of antipodal radiation patches (1), a micro-strip feeder line (2), delay lines (3), loading resistors (4) and a medium substrate (5), wherein two antipodal Vivaldi radiation patches (1) are arranged on the two faces of the medium substrate (5); opposite edges (6) of the two patches (1) stretch to form a tapered opening; positions at the tail ends of the radiation patches (1) where the opening is largest serve as antenna radiation tail ends (7); an antenna transmission section (8) is formed in the other direction of the opening; one end of the micro-strip feeder line (2) serves as a feed end (11), and the other end of the micro-strip feeder line (2) is connected with the antenna transmission section (8) from a side edge; each antipodal radiation patch (1) is provided with a plurality of delay lines (3) on the back face of the medium substrate (5) respectively; one end of each delay line (3) is connected with the radiation tail ends (7) through metallized via holes (11), and the other end of each delay line (3) is open-circuited; and the loading resistors (4) are distributed on the delay lines (3). By adopting the antenna, the amplitude of a tail pulse can be lowered effectively.
Description
Technical field
Patent of the present invention relates to a kind of pulse antenna, especially a kind of non-coplanar delay line resistance loading antipodal Vivaldi pulse antenna, the manufacture field of genus pulse antenna.
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, in antenna end, just have remaining pulse current.In process after this, residual impulse electric current can return along original path and continue electromagnetic radiation energy in antenna, just has tail pulse like this in the pulses of radiation waveform of antenna.These tail pulses can be overlapping in time with the signal from target, thereby can echo signal be formed and be disturbed.Therefore conventionally need to take corresponding measure to reduce the amplitude of tail pulse in these waveforms.At present, known pulse antenna is to adopt loading method to reduce the amplitude of tail pulse mostly.Anti-pode Vivaldi antenna, as a kind of pulse antenna, has working band wide, high-gain, and the advantages such as linear polarization, apply very extensively, also have more application in ground penetrating radar.For pulse antenna, the method for conventional reduction tail pulse amplitude is resistance Loading Method.But common resistance loads and makes the radiation efficiency of anti-pode Vivaldi antenna lower.Anti-pode Vivaldi antenna radiation tail end size is relatively large simultaneously, end current distribution is larger, a small amount of resistance being placed between distributing point and radiation tail end loads the residual impulse electric current that can not effectively absorb antenna end, thereby limited to the improvement of tail pulse adverse effect.
Summary of the invention
technical problem:the object of the invention is to propose a kind of non-coplanar delay line resistance loading antipodal Vivaldi pulse antenna, this antenna can effectively reduce tail pulse amplitude, and also smaller on the impact of antenna radiation efficiency.
technical scheme:non-coplanar delay line resistance loading antipodal Vivaldi pulse antenna of the present invention is consisted of anti-pode radiation patch, microstrip feed line, delay line, loading resistor and medium substrate, two anti-pode radiation patch lay respectively at medium substrate two sides, two two relative edges of paster open formation horn opening, and anti-pode radiation patch end openings maximum is aerial radiation end; The other direction contrary with opening is the span line of antenna; Microstrip feed line one end is antenna feed end, and the other end is connected with antenna transmission section from side; Each anti-pode radiation patch has respectively several delay lines at its medium substrate back side; Delay line one end is connected with radiation tail end through metallization via hole, other end open circuit; Loading resistor is distributed on delay line.
Delay line is printed, is etched on medium substrate, or is placed on medium substrate or is suspended in air.
One end of the span line of antenna is connected with the radiant section of antenna, and the other end is connected with microstrip feed line.
The length of delay line is greater than half of the high workload wavelength of antenna, and the length direction of delay line is parallel with the main radiation direction of antenna.
To antenna, the radiation formation in main radiation direction does not block in the position of delay line.
Loading resistor is the resistance of lumped parameter form or realizes with the resistance of delay line itself.
Loading resistor is distributed on a segment of delay line or the delay line of several segments, also can on a segment delay line, be connected to a plurality of loading resistors.
Wherein anti-pode radiation patch, microstrip feed line, delay line and loading resistor are all on same medium substrate.Two anti-pode radiation patch lay respectively at the two sides of medium substrate, only have the region overlaid of small part across two pasters of medium substrate, two relative edges of two anti-pode radiation patch are parallel and then open and form flaring opening before this, and the position of two anti-pode radiation patch end openings maximums, is the radiation tail end of antenna, one section of the direction end contrary with radiation tail end, the edge of two anti-pode radiation patch is parallel, the span line that this section is antenna, one section that between span line and radiation tail end, patch edges dehisces to change is the radiant section of antenna, at span line, across medium substrate, some is overlapping for upper and lower two anti-pode radiation patch, its edge is parallel, therefore the span line of antenna can be regarded staggered Plate-Transmission-Line as, one end of span line is connected with the radiant section of antenna, the other end of span line is connected with microstrip feed line, conduction band one end of microstrip feed line is from the side edge of a slice anti-pode radiation patch of side and the same face, in a slice anti-pode radiation patch of medium substrate another side as the ground plane of microstrip feed line, therefore one end of microstrip feed line is connected with the span line of antenna from side, the other end of microstrip feed line is the feed end of antenna, each anti-pode radiation patch has respectively a plurality of delay lines at the back side of its medium substrate, one end of delay line is connected with the radiation tail end of antenna by metallization via hole, the other end of extended line is open circuit, and the length of delay line is greater than the over half of antenna maximum functional wavelength, loading resistor is positioned on delay line.
Delay line printing, etching or be placed on medium substrate, or be suspended in the air above medium substrate.
The shape of delay line is straight line, or hair clip shape is so that under small size antenna condition, delay line has enough length, and the length direction of delay line is parallel with the main radiation direction of antenna.
Loading resistor is the resistance of lumped parameter form, or take the resistance of the distributed constant form that the loss of delay line itself is resistance.
On delay line, there are some discontinuous places, by loading resistor, be connected, form the current path that delay line resistor loads.First pulse signal from the feed end input of anti-pode Vivaldi antenna, then arrives the span line of antenna, then starts the direction towards radiation tail end to radiant section, while transmit emittance to the radiation tail end of antenna through microstrip feed line; Radiation tail end at antenna, 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, avoided making at radiation tail end open circuit the residual impulse energy of not radiation to return to the radiating element of antenna, formed radiation again and cause tail pulse; Loading resistor on delay line enters consumption the residual impulse energy of current path, and tail pulse amplitude is reduced greatly.Many delay line makes the residual impulse energy of anti-pode Vivaldi antenna radiation tail end can as often as possible enter delay line, the more effective impact that reduces tail pulse.Because the direction of the most of line segment of delay line is parallel with the main radiation direction of anti-pode Vivaldi antenna, thus on delay line towards the energy of main radiation direction radiation seldom.And in the space that occupies at it of delay line, to anti-pode Vivaldi antenna, the energy emission in main radiation direction does not exert an influence.Due to loading resistor, do not absorb the pulse current of anti-pode Vivaldi antenna radiation patch, this kind of resistance load mode is also less to the adverse effect of antenna radiation efficiency simultaneously.Delay line open circuit also makes delay line away from the gap between anti-pode Vivaldi antenna radiation patch in addition, avoids affecting the normal radiation of anti-pode Vivaldi antenna radiation patch.Adjust the resistance sum of loading resistor, distribution mode, the number of delay line and the length of delay line etc. of the resistance of adjustment loading resistor on delay line can change the amplitude of tail pulse in pulse signal.
beneficial effect:the invention has the beneficial effects as follows, the resistance that anti-pode Vivaldi antenna has been carried out to delay line loads, effectively reduce the amplitude of tail pulse in radiation waveform, reduce the adverse effect of loading resistor to anti-pode Vivaldi antenna radiation efficiency, delay line does not affect the normal radiation of antenna yet.
Accompanying drawing explanation
Fig. 1 is the structural representation of antenna of the present invention lower floor.
Fig. 2 is the structural representation on antenna of the present invention upper strata.
In figure, there is anti-pode radiation patch 1, microstrip feed line 2, delay line 3, loading resistor 4, medium substrate 5, the edge 6 of anti-pode radiation patch, radiation tail end 7, span line 8, radiant section 9, the conduction band 10 of microstrip feed line, the feed end 11 of anti-pode Vivaldi antenna, metallization via hole 12.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
The technical solution adopted in the present invention is: this non-coplanar delay line resistance loading antipodal Vivaldi pulse antenna is consisted of anti-pode radiation patch, microstrip feed line, delay line, loading resistor and medium substrate, and wherein anti-pode radiation patch, microstrip feed line, delay line and loading resistor are all on same medium substrate.Two anti-pode radiation patch lay respectively at the two sides of medium substrate, only have the region overlaid of small part across two pasters of medium substrate, two two relative edges of anti-pode radiation patch open and form flaring opening, and the position of two anti-pode radiation patch end openings maximums, is the radiation tail end of antenna, one section of the direction end contrary with radiation tail end, the edge of two anti-pode radiation patch is parallel, this section is the span line of antenna, one section that between span line and radiation tail end, dehisce to change in edge is the radiant section of antenna, at radiant section, the pattern curve at the edge of anti-pode radiation patch refers to number form, can be also straight line, at span line, across medium substrate, some is overlapping for upper and lower two anti-pode radiation patch, its edge is parallel, therefore the span line of antenna can be regarded staggered Plate-Transmission-Line as, one end of span line is connected with the radiant section of antenna, the other end of span line is connected with microstrip feed line, conduction band one end of microstrip feed line is from the side edge of a slice anti-pode radiation patch of side and the same face, in a slice anti-pode radiation patch of medium substrate another side as the ground plane of microstrip feed line, therefore one end of microstrip feed line is connected with the span line of antenna from side, the other end of microstrip feed line is the feed end of antenna, each anti-pode radiation patch has respectively several delay lines at the back side of its medium substrate, one end of delay line is connected with the radiation tail end of antenna by metallization via hole, the other end of delay line is open circuit, and the length of delay line is greater than the over half of antenna maximum functional wavelength, the shape of delay line is straight line, or hair clip shape is so that under small size antenna condition, delay line has enough length, loading resistor is positioned on delay line, has some discontinuous places on delay line, by loading resistor, is connected, and forms the current path that delay line resistor loads.First pulse signal from the feed end input of anti-pode Vivaldi antenna, then arrives the span line of anti-pode radiation patch, then starts the direction towards radiation tail end to radiant section, while transmit emittance to the radiation tail end of antenna through microstrip feed line; At the radiation tail end of antenna, delay line provides additional current paths for the electric current of residual impulse energy, and 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 aerial radiation end to cause; Loading resistor on delay line enters consumption the residual impulse energy of current path, and tail pulse amplitude is reduced greatly.Many delay line makes the residual impulse energy of anti-pode Vivaldi antenna radiation tail end can as often as possible enter delay line, the more effective impact that reduces tail pulse.Because the direction of the most of line segment of delay line is parallel with the main radiation direction of anti-pode Vivaldi antenna, thus the electric current that carries residual impulse energy on delay line towards the energy of main radiation direction radiation seldom.And in the space that occupies at it of delay line, to anti-pode Vivaldi antenna, the energy emission in main radiation direction does not exert an influence.Due to loading resistor, do not absorb the pulse current of anti-pode Vivaldi antenna radiation patch, this kind of resistance load mode is also less to the adverse effect of antenna radiation efficiency simultaneously.Delay line open circuit also makes delay line away from the gap between anti-pode Vivaldi antenna radiation patch in addition, avoids affecting the normal radiation of anti-pode Vivaldi antenna radiation patch.Adjust the resistance sum of loading resistor, distribution mode, the number of delay line and the length of delay line etc. of the resistance of adjustment loading resistor on delay line can change the amplitude of tail pulse in pulse signal.
Structurally, this non-coplanar delay line resistance loading antipodal Vivaldi pulse antenna is consisted of anti-pode radiation patch 1, microstrip feed line 2, delay line 3, loading resistor 4 and medium substrate 5, and wherein anti-pode radiation patch 1, microstrip feed line 2, delay line 3 and loading resistor 4 are all on same medium substrate 5.Two anti-pode radiation patch 1 are all metal patches, lay respectively at the two sides of medium substrate 5, only have the region overlaid of small part across 5 two radiation patch 1 of medium substrate, two two relative edges 6 of radiation patch 1 open and form flaring opening, and the position of anti-pode radiation patch 1 end openings maximum, is the radiation tail end 7 of antenna, one section of the direction end contrary with radiation tail end 7, the edge 6 of two anti-pode radiation patch 1 is parallel, the span line 8 that this section is antenna, one section that between span line 8 and radiation tail end 7, patch edges 6 dehisces to change is the radiant section 9 of antenna, at span line 8, across medium substrate 5, some is overlapping for upper and lower two anti-pode radiation patch 1, its edge 6 is parallel, therefore the span line 8 of antenna can be regarded staggered Plate-Transmission-Line as, one end of span line is connected with the radiant section of antenna 9, the other end of span line is connected with microstrip feed line 2, one end of the conduction band 10 of microstrip feed line joins from the edge 6 of a slice anti-pode radiation patch 1 of side and the same face, a slice anti-pode radiation patch 1 of medium substrate 5 another sides conduct be the ground plane of microstrip feed line 2, therefore microstrip feed line 2 one end are connected from the side of antenna and the span line of antenna 8, the other end of microstrip feed line is exactly the feed end 11 of antenna, each anti-pode radiation patch 1 is distinguished several delay lines 3 at the back side of its medium substrate 5, one end of delay line 3 is connected with the radiation tail end 7 of antenna by metallization via hole 12, the other end of delay line 3 is open circuits, and the length of delay line 3 is greater than the over half of antenna maximum functional wavelength, the shape of delay line 3 is straight lines, or hair clip shape, loading resistor 4 is positioned on delay line 3, has some discontinuous places on delay line 3, by loading resistor 4, is connected, and forms the current path that delay line resistor loads.
On manufacturing: the manufacturing process of this non-coplanar delay line resistance loading antipodal Vivaldi pulse antenna can adopt semiconductor technology, ceramic process, laser technology or printed circuit technology.Anti-pode radiation patch 1 consists of the conductor material conducting electricity very well, and medium substrate 5 is wanted the alap dielectric material of service wear.Delay line 3 printings, etching or be placed on medium substrate 5, or be suspended in medium substrate 5 air above.Delay line 3 adopts hair clip shape so that delay line 3 has enough length; Delay line 3 also can adopt other wiring form, as long as the length long enough of delay line 3; The hairpin-shaped long line segment direction of delay line 3 is consistent with antenna main radiation direction, the impact with the radiation that reduces hair clip shape delay line 3 on antenna; It is smaller to guarantee that delay line 3 has enough length that line-spacing between the adjacent segment of hair clip shape delay line 3 is also wanted.Loading resistor 4 is the resistance of lumped parameter form, or take the resistance of the distributed constant form that the losses of delay line 3 itself are resistance; Loading resistor 4 can be the resistance of surface mount resistor or band lead-in wire, also can be with the larger wire of resistance as delay line 3, at this moment can be less with or without loading resistor 4, the conductor resistances of delay line 3 itself have just replaced the effect of loading resistor 4.
According to the above, just can realize the present invention.
Claims (5)
1. a non-coplanar delay line resistance loading antipodal Vivaldi pulse antenna, it is characterized in that this antenna is consisted of anti-pode radiation patch (1), microstrip feed line (2), delay line (3), loading resistor (4) and medium substrate (5), two anti-pode radiation patch (1) lay respectively at medium substrate (5) two sides, two edges (6) that two pasters (1) are relative open formation horn opening, and anti-pode radiation patch (1) end openings maximum is aerial radiation end (7), one section of the direction end contrary with radiation tail end (7), the edge (6) of two anti-pode radiation patch (1) is parallel, the span line that this section is antenna (8), one section that between span line (8) and radiation tail end (7), patch edges dehisces to change is the radiant section of antenna (9), in span line (8), across medium substrate (5), some is overlapping for upper and lower two anti-pode radiation patch (1), its edge (6) is parallel, therefore the span line of antenna can be regarded staggered Plate-Transmission-Line as, one end of span line (8) is connected with the radiant section (9) of antenna, the other end of span line (8) is connected with microstrip feed line (2), microstrip feed line (2) one end is antenna feed end (11), the other end is connected with antenna transmission section (8) from side, conduction band (10) one end of microstrip feed line (2) is from the side edge of a slice anti-pode radiation patch (1) of side and the same face, in a slice anti-pode radiation patch (1) of medium substrate another side as the ground plane of microstrip feed line (2), each anti-pode radiation patch (1) has respectively several delay lines (3) at its medium substrate (5) back side, and to antenna, the radiation formation in main radiation direction does not block in the position of delay line (3), delay line (3) one end is connected with radiation tail end (7) through metallization via hole (12), other end open circuit, loading resistor (4) is distributed on delay line (3).
2. non-coplanar delay line resistance loading antipodal Vivaldi pulse antenna according to claim 1, is characterized in that delay line (3) prints, is etched on medium substrate (5).
3. non-coplanar delay line resistance loading antipodal Vivaldi pulse antenna according to claim 1 and 2, the length that it is characterized in that delay line (3) is greater than half of the high workload wavelength of antenna, and the length direction of delay line (3) is parallel with the main radiation direction of antenna.
4. non-coplanar delay line resistance loading antipodal Vivaldi pulse antenna according to claim 1 and 2, is characterized in that loading resistor (4) is the resistance of lumped parameter form or realizes with the resistance of delay line (3) itself.
5. according to the non-coplanar delay line resistance loading antipodal Vivaldi pulse antenna described in claim 1 or 4, it is characterized in that loading resistor (4) is distributed in a segment of delay line (3) or the delay line (3) of several segments is upper, also can on a segment delay line (3), be connected to a plurality of loading resistors (4).
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| CN201110318941.6A CN102361169B (en) | 2011-10-20 | 2011-10-20 | Non-coplanar delay line resistance loading antipodal Vivaldi pulse antenna |
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| CN201110318941.6A CN102361169B (en) | 2011-10-20 | 2011-10-20 | Non-coplanar delay line resistance loading antipodal Vivaldi pulse antenna |
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| CN102361169B true CN102361169B (en) | 2014-08-13 |
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| CN106025538A (en) * | 2016-07-29 | 2016-10-12 | 中国人民武装警察部队工程大学 | Small side-feed antipodal Vivaldi antenna with resistor loading |
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| CN1330052C (en) * | 2005-06-15 | 2007-08-01 | 东南大学 | Delay line loaded impulse antenna |
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| CN101895011B (en) * | 2010-06-13 | 2013-04-10 | 南京邮电大学 | Wideband printing antenna with symmetrical dipole-antipodal slot line composite structure |
| CN102157769B (en) * | 2011-03-25 | 2013-11-06 | 东南大学 | Microstrip line-slot line transition structure with stop band |
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