CN102820530A - Digital-feed ultra-wideband antenna - Google Patents
Digital-feed ultra-wideband antenna Download PDFInfo
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- CN102820530A CN102820530A CN2012103161896A CN201210316189A CN102820530A CN 102820530 A CN102820530 A CN 102820530A CN 2012103161896 A CN2012103161896 A CN 2012103161896A CN 201210316189 A CN201210316189 A CN 201210316189A CN 102820530 A CN102820530 A CN 102820530A
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Abstract
The invention discloses a digital-feed ultra-wideband antenna, belongs to the field of digital wireless communication and relates to non-modulation digital signal sending antennas. The digital-feed ultra-wideband antenna comprises a digital signal input port (1), a digitally-driven SRD (step recovery diode) narrow pulse signal generator (2) and a bow-tie slot radiating unit (3) which are in coplanar waveguide series connection, wherein the digital signal input port (1) is an SMA (sub-miniature-A) connector for feed-in of digital signals; the digitally-driven SRD narrow pulse signal generator (2) comprises a coupling circuit, a resonance matching circuit, a pulse forming circuit and a pulse shaping circuit; and the bow-tie slot radiating unit is used for radiating pulse signals. The digital-signal-driven pulse generator is used for generating pulse, and the pulse is radiated by the ultra-wideband bow-tie antenna, so that direct sending and wireless transmission of the digital signals can be achieved without pre-modulating the digital signals, and a sender structure of a digital wireless communication system can be greatly simplified. Additionally, digital information is transmitted by the ultra-wideband pulse, so that information transmission rate is increased beneficially, and channel interference is reduced.
Description
Technical field
The invention belongs to the digital wireless communication field, relate to a kind of wireless communications method of non-modulation digital signal, particularly the ultra broadband transmitting antenna of non-modulation digital signal technology.
Background technology
In digital wireless communication, can't grow Distance Transmission at wireless channel, this is because digital baseband signal is a low frequency signal, is difficult to launched efficiently by conventional antenna.Therefore,, must carry out carrier modulation,, the frequency spectrum shift of baseband signal could be launched by antenna to high frequency, and then carry out wireless transmission the radiofrequency signal that is modulated to of digital baseband signal to digital signal at transmitting end.
Yet but there are several limitation inevitably in the digital wireless communication technology of this routine: at first the introducing of modulation technique brings complicated structure and huge volume certainly will for the digital communication system transmitting end; Secondly owing to radio-frequency modulator limited bandwidth property, the transmission capacity of channel is difficult to improve; Existing in addition digital modulation technique still is difficult to solve problems such as the availability of frequency spectrum is low, anti-multipath decline ability, the power spectrum decay is slow, out-of-band radiation is serious.Along with the development of Communications Market, people have proposed new requirements such as two-forty, ultra broadband, anti-interference and miniaturization to digital communication.And because the limitation of present digital wireless communication technology causes this market-oriented demand to be difficult to be met.
In recent years, there is the researcher to attempt the digital signal modulation technique is combined with transmitting antenna, proposes a kind of novel modulation concept that is used for digital wireless communication, promptly directly modulate antenna (DirectAntenna Modulation).Like document " Electromagnetic Modeling and Simulation of a Directly Modulated Patch Antenna " (Steven D.Keller; W.Devereux Palmer; And William T.Joines; IEEE Antennas and Wireless Propagation Letters, Vol.9,2010).This technology is through insertion switch diode on microstrip antenna, in order to the conducting and the disconnection of control microstrip antenna radiant body and ground plane.During communication, antenna input feed-in radio-frequency carrier signal adopts digital signal to drive opening with disconnected of diode.When digital signal is " 0 ", diode current flow, antenna radiator is connected with ground plane, antenna can't radiation signal frequently; When digital signal is " 1 ", diode breaks off, antenna radiator and ground plane disconnecting, aerial radiation radiofrequency signal.This technology combines digital signal modulation module and antenna, greatly reduces the structure difficulty and the size of emission system, can also improve the bandwidth of system simultaneously effectively.But this method still can't be avoided the digital modulation technique other problems, is difficult to satisfy the communicating requirement of ultra broadband, high rate data transmission.
Document " Digitally Driven Antenna for HF Transmission " (Steven D.Keller in addition; W.Devereux Palmer, and William T.Joines, IEEE Transactions on Microwave Theory and Techniques; Vol.58; No.9 Sep.2010) proposes a kind of digital drive antenna, and it introduces a transistor switch and pulse-width modulator (PWM) on the electronically small antenna feeder line.Directly feed-in pulse-width modulation HF signal just can be gone out through aerial radiation on antenna; This method has replaced the power amplifier and the impedance matching network of legacy transmission end with crystal switch and pulse-width modulator; Effectively reduce the dependence of system to frequency; Improve the band efficiency of signal, can be used for the digital signal super broad band radio communication.But the digital drive antenna of realizing under should technology still needs the carrier modulation circuit, and structural volume is also bigger simultaneously, is difficult to realization with modulation circuit and antenna integrated integrated.
Document " Circuits and Active Antennas for Ultra-wide Band Pulse Generation and Transmission " (M.Kumar; A.Basu; And S.K.Koul, Progress In Electromagnetics Research B, Vol.23; 251-272,2010) the active ultra-wideband antenna of development belongs to a kind of several driven antenna.Its principle is to introduce a digital drive pulse-generating circuit at the front end of ultra-wideband antenna; Digital signal can produce a series of pulses of carrying binary digital information after getting into pulse-generating circuit, and pulse is by the wireless transmission that also realizes digital information simultaneously of aerial radiation.The pulse-generating circuit of this antenna front end is to adopt active FET transistor, therefore needs extra dc bias circuit, causes the integrated difficulty of circuit and antenna, and dc bias circuit also can bring some parasitic radiations to antenna, has influenced the radiance of antenna.
Summary of the invention
The object of the present invention is to provide a kind of number feedback ultra-wideband antenna, this antenna directly feed-in digital baseband signal carries out the wireless transmission of information, need not in advance digital baseband signal to be carried out carrier modulation.More traditional digital signal emitter has saved the signal modulation module, therefore can simplify digital signal emission system structure greatly.In addition, the signal of aerial radiation of the present invention is the wideband pulse signal, is applicable to the ultra-broadband digital communication system, has rate of information throughput height, and antijamming capability is strong, can effectively reduce advantages such as multipath loss.And compare with existing number feedback ultra-wideband antenna; Antenna advantage of the present invention do not need to be extra dc bias circuit; Can simplify number thus significantly and drive the circuit structure of antenna and the volume size of entire antenna, can also avoid simultaneously disturbing because of the caused parasitic radiation of dc bias circuit.
Number feedback ultra-wideband antenna provided by the invention is integrated by three parts: digital signal input end mouth, number drive SRD narrow-pulse generator and butterfly gap radiation unit.Digital signal at first arrives pulse generator after the input port feed-in, when digital signal level takes place just to change drive-pulse generator is produced burst pulse.The burst pulse that produces has certain frequency and bandwidth, and on time domain, carries binary digital information.These burst pulses of carrying binary message get into butterfly gap radiation unit will launch with the electromagnetic wave form, finally realizes the wireless transmission of digital information.
Technical scheme of the present invention is:
A kind of number feedback ultra-wideband antenna, its structure such as Fig. 1 comprise that to shown in Figure 4 digital signal input end mouth 1, number drive SRD narrow pulse signal generator 2,3 three parts in butterfly gap radiation unit; Three parts adopt co-planar waveguide to be in series.
Said digital signal input end mouth 1 is positioned at the front end that number drives SRD narrow pulse signal generator 2, adopts sub-miniature A connector, is used for the feed-in of digital signal.
Said number drives SRD narrow pulse signal generator 2 (as shown in Figure 5) and is made up of coupling circuit, resonance match circuit, pulse shaping circuit and pulse shaper.Said coupling circuit is made up of first capacitor C 1, and first capacitor C 1 is serially connected with between digital signal input end mouth 1 and the resonance match circuit, and its effect is that signal energy is coupled to next stage.Said resonance match circuit is made up of first inductance L 1, second capacitor C 2 and second inductance L 2, and its effect is the impedance matching that realizes between digital signal input end mouth and the narrow pulse forming circuit; Wherein, first inductance L 1 and second capacitor C, 2 parallelly connected formation LC antiresonant circuits, second inductance L 2 is serially connected with between LC antiresonant circuit and the pulse shaping circuit.Said pulse shaping circuit is made up of a step recovery diode (SRD): when the exciting current of positive half cycle arrived, step recovery diode was in conducting state, and shorted to earth, next stage do not have the voltage input; When negative half-cycle current arrived, step recovery diode continued to end after conducting a period of time again, will import a narrow pulse signal that rising edge is very little at next stage.Said pulse shaper is made up of the 3rd inductance L 3 and Schottky diode (SBD), and its effect is the pulse stretching that suppressor pulse forms narrow pulse signal that circuit produced; Wherein the 3rd inductance L 3 is parallel between narrow pulse forming circuit and the butterfly gap radiation unit 3, and Schottky diode is series between narrow pulse forming circuit and the butterfly gap radiation unit 3.
Said butterfly gap radiation unit places number to drive after the SRD narrow pulse signal generator 2, in order to the pulses of radiation signal.Butterfly gap radiation unit is the super-wide-band flat antenna structure, and two radiating slots are positioned on the single face metal medium plate; Two radiating slots be shaped as butterfly, wherein the both sides up and down of slit the widest part load a narrow slit 15 respectively; Place relatively on two radiating slot summits, adopts coplanar wave guide feedback; Feed placement is positioned at place, two summits, and the gradual change groove is adopted in co-planar waveguide and radiating slot junction.
A kind of number feedback ultra-wideband antenna provided by the invention combines number and drives pulse generation technology and ultra broadband butterfly antenna technology; Utilize the digital signal drive-pulse generator to produce pulse; Pulse just can realize digital information is directly launched and wireless transmission again through the radiation of ultra broadband butterfly antenna.When antenna of the present invention is used for the digital signal wireless transmission; Need not digital signal to be modulated in advance at transmitting terminal; Therefore can simplify the transmitter architecture of digit wireless communication system greatly, in addition, adopt ultra-wideband pulse to transmit digital information; Help improving the rate of information throughput, reduce channel disturbance.
Figure of description and explanation:
Fig. 1: the structural representation of number feedback ultra-wideband antenna provided by the invention.Wherein 1 representes digital signal input end mouth (sub-miniature A connector), and 2 expression numbers drive the SRD narrow pulse signal generator, 3 expression butterfly gap radiation unit.
Fig. 2: digital signal input end mouth 1 structural representation in the number feedback ultra-wideband antenna provided by the invention.Wherein 4 represent the sub-miniature A connector outer conductors, and 5 expression coaxial line internal and external conductors are filled media, 6 expression sub-miniature A connector inner wires (probe).
Fig. 3: number drives SRD narrow pulse signal generator 2 structural representations in the number feedback ultra-wideband antenna provided by the invention.Wherein 7 represent Schottky diodes (SBD), 8 expressions the 3rd inductance L, 3,9 expression slits, and 10 expression step recovery diodes (SRD), 11 expressions, second inductance L 2,12 expressions, second capacitor C 2,13 is represented first inductance L, 1,14 expression, first capacitor C 1.
Fig. 4: butterfly gap radiation unit 3 structural representations in the number feedback ultra-wideband antenna provided by the invention.The slit that loads on the 15 expression butterfly gap radiation unit.
Fig. 5: the circuit theory diagrams of number feedback ultra-wideband antenna provided by the invention.
Fig. 6: number feedback ultra-wideband antenna provided by the invention is at the experimental result picture of feed-in 100MHz digital signal.The value of ordinate scale value expression signal 1 passage wherein.
Fig. 7: number feedback ultra-wideband antenna provided by the invention is at the experimental result picture of feed-in " 100010100001010101 " digital signal.Wherein the scale value of signal 2 passage ordinates is 20 times of 1 passage.
Fig. 8: the experimental system structural representation of number feedback ultra-wideband antenna provided by the invention.
Embodiment:
Antenna embodiment of the present invention is following:
A kind of number feedback ultra-wideband antenna of the present invention is printed in the rectangle printed board.Rectangle printed board relative dielectric constant is 4.4, and size is 60.5mm * 91mm, and thickness is 1mm;
The digital signal input end mouth adopts sub-miniature A connector, and one of the co-planar waveguide that is welded on 50 ohm is held on the limit.Wherein sub-miniature A connector inner wire and co-planar waveguide holding wire welding, sub-miniature A connector outer conductor and the welding of co-planar waveguide two ground planes.
Number drives SRD narrow pulse signal generator circuit production on co-planar waveguide, wherein, and coupling capacitance: C1=68pF; Resonant circuit: L1, C2, L2 are respectively 82nH, 48pF, 32nH; Narrow pulse forming circuit: the model of step recovery diode (SRD) is the 2J3C that the inferior Photoelectron Corp. in Chengdu produces, and minority carrier life time is 10ns, and snap time is less than 150ps, junction capacitance Cj=0.6pF; The Bas125 that pulse shaper: L3=47nF, Schottky diode (SBD) select for use Siemens Company to produce.
Two radiating slots of butterfly gap radiation unit are positioned in the printed board, slit length overall 80mm; Radiating slot be shaped as butterfly, wherein the both sides up and down of slit the widest part load a narrow slit 15 respectively; Place relatively on two radiating slot summits; Adopt coplanar wave guide feedback, feed placement is positioned at place, two summits, and the gradual change slot is adopted in radiating slot and co-planar waveguide junction.
Butterfly gap radiation unit is connected with narrow pulse signal generator through co-planar waveguide.
Device is as shown in Figure 8 during experiment, and digital signal waiting for transmission is a series of high-low levels, representes " 1 " with high level, and low level is represented " 0 ".The signal of band transmission divides two-way, and one the tunnel through digital signal analyser 2 passage feed-ins, as synchronizing signal.Another road, receives with an other width of cloth ultra-wideband antenna behind the aerial radiation from the feed-in of antenna digital signal input port, and through digital signal analyser 1 passage feed-in.Adopt digital signal analyser that two paths of signals is shown simultaneously at last.As shown in Figure 6, signal waiting for transmission is " 0 ", " 1 " alternate digital signal, and period frequency is 100MHz, and in high-low level variation place of input signal, antenna produces a pulse signal accordingly.Shown in Figure 6, signal to be passed is 18 a binary data " 100010100001010101 ", and the signal period frequency is 10MHz.Observe from the radiation signal waveform of antenna; Can find all can give off a burst pulse at moment place's antenna that each level of input signal changes; Portable being with of the burst pulse string that radiates like this transmitted binary data information, can realize the wireless transmission of digital signal.
Claims (1)
1. a number feedback ultra-wideband antenna comprises that digital signal input end mouth (1), number drive SRD narrow pulse signal generator (2), (3) three parts in butterfly gap radiation unit; Three parts adopt co-planar waveguide to be in series;
Said digital signal input end mouth (1) is positioned at number and drives the front end of SRD narrow pulse signal generator (2), adopts sub-miniature A connector, is used for the feed-in of digital signal;
Said number drives SRD narrow pulse signal generator (2) and is made up of coupling circuit, resonance match circuit, pulse shaping circuit and pulse shaper; Said coupling circuit is made up of first electric capacity (C1), and first electric capacity (C1) is serially connected with between digital signal input end mouth (1) and the resonance match circuit, and its effect is that signal energy is coupled to next stage; Said resonance match circuit is made up of first inductance (L1), second electric capacity (C2) and second inductance (L2), and its effect is the impedance matching that realizes between digital signal input end mouth and the narrow pulse forming circuit; Wherein, first inductance (L1) and the parallelly connected formation of second electric capacity (C2) LC antiresonant circuit, second inductance (L2) is serially connected with between LC antiresonant circuit and the pulse shaping circuit; Said pulse shaping circuit is made up of a step recovery diode: when the exciting current of positive half cycle arrived, step recovery diode was in conducting state, and shorted to earth, next stage do not have the voltage input; When negative half-cycle current arrived, step recovery diode continued to end after conducting a period of time again, will import a narrow pulse signal that rising edge is very little at next stage; Said pulse shaper is made up of the 3rd inductance (L3) and Schottky diode, and its effect is the pulse stretching that suppressor pulse forms narrow pulse signal that circuit produced; Wherein the 3rd inductance (L3) is parallel between narrow pulse forming circuit and the butterfly gap radiation unit (3), and Schottky diode is series between narrow pulse forming circuit and the butterfly gap radiation unit (3);
Said butterfly gap radiation unit places number to drive SRD narrow pulse signal generator (2) afterwards, in order to the pulses of radiation signal; Butterfly gap radiation unit is the super-wide-band flat antenna structure, and two radiating slots are positioned on the single face metal medium plate; Two radiating slots be shaped as butterfly, wherein the both sides up and down of slit the widest part load a narrow slit (15) respectively; Place relatively on two radiating slot summits, adopts coplanar wave guide feedback; Feed placement is positioned at place, two summits, and the gradual change groove is adopted in co-planar waveguide and radiating slot junction.
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| CN2012103161896A CN102820530A (en) | 2012-08-31 | 2012-08-31 | Digital-feed ultra-wideband antenna |
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| CN2012103161896A CN102820530A (en) | 2012-08-31 | 2012-08-31 | Digital-feed ultra-wideband antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767027A (en) * | 2015-03-17 | 2015-07-08 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Micro-strip difference rectification antenna based on WIFI frequency band |
| CN107634778A (en) * | 2017-09-26 | 2018-01-26 | 普天智能照明研究院有限公司 | Pulse signal transmission system and transmission method with width degree |
| CN113823895A (en) * | 2021-08-25 | 2021-12-21 | 超讯通信股份有限公司 | Active integrated antenna and communication equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020060647A1 (en) * | 2000-10-03 | 2002-05-23 | Ibm | Antenna and information processors |
| CN101582535A (en) * | 2008-05-15 | 2009-11-18 | 赵庆广 | Novel wide-band printing unipole antenna adopting coplanar waveguide feed |
| CN101227182B (en) * | 2008-01-29 | 2011-04-27 | 电子科技大学 | Narrow pulse signal generator based on clock drive |
-
2012
- 2012-08-31 CN CN2012103161896A patent/CN102820530A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020060647A1 (en) * | 2000-10-03 | 2002-05-23 | Ibm | Antenna and information processors |
| CN101227182B (en) * | 2008-01-29 | 2011-04-27 | 电子科技大学 | Narrow pulse signal generator based on clock drive |
| CN101582535A (en) * | 2008-05-15 | 2009-11-18 | 赵庆广 | Novel wide-band printing unipole antenna adopting coplanar waveguide feed |
Non-Patent Citations (1)
| Title |
|---|
| J. LIU, D. ZHAO, AND B.-Z. WANG: "A BEVELED AND SLOT-LOADED PLANAR BOW-TIE ANTENNA FOR UWB APPLICATION", 《PROGRESS IN ELECTROMAGNETICS RESEARCH M》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104767027A (en) * | 2015-03-17 | 2015-07-08 | 广东顺德中山大学卡内基梅隆大学国际联合研究院 | Micro-strip difference rectification antenna based on WIFI frequency band |
| CN107634778A (en) * | 2017-09-26 | 2018-01-26 | 普天智能照明研究院有限公司 | Pulse signal transmission system and transmission method with width degree |
| CN113823895A (en) * | 2021-08-25 | 2021-12-21 | 超讯通信股份有限公司 | Active integrated antenna and communication equipment |
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Application publication date: 20121212 |