CN104966903A - Suspended microstrip antenna array for 60GHz millimeter wave communication and antenna thereof - Google Patents
Suspended microstrip antenna array for 60GHz millimeter wave communication and antenna thereof Download PDFInfo
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- CN104966903A CN104966903A CN201510347118.6A CN201510347118A CN104966903A CN 104966903 A CN104966903 A CN 104966903A CN 201510347118 A CN201510347118 A CN 201510347118A CN 104966903 A CN104966903 A CN 104966903A
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Abstract
The invention provides a suspended microstrip antenna array for 60GHz millimeter wave communication and an antenna thereof. The antenna array comprises antenna units and a feed network. The antenna units are arranged in an upper and lower two-row mode; the number of the antenna elements is 2*(2n), and n is a positive integer; the feed network comprises impedance transformers, coplane duel-wires, coplane waveguides and power dividers connected with the coplane duel-wires and the coplane waveguides; each antenna element is connected with one impedance transformer; the impedance transformers of the uplink antenna elements of the antenna units and the impedance transformers of the downlink antenna elements are arranged oppositely; the coplane duel-wires are connected with the antenna units via the impedance transformers; one power divider is connected at the axial central position of each coplane duel-wire; and one end of the coplane duel-wire is connected with the power divider and the other end is provided with a feed port. The suspended microstrip antenna has the advantages that the bandwidth is wide, the radiation loss is small, and integration with a plane millimeter wave circuit is easy.
Description
Technical field
The present invention relates to antenna technology, being specifically related to a kind of suspension micro-strip antenna array for communicating in 60GHz millimere-wave band and antenna thereof.
Background technology
5G technology i.e. the 5th third-generation mobile communication technology, it is the Technology of New Generation Mobile Communications of mobile communications network after the year two thousand twenty, by the availability of frequency spectrum with superelevation and the transmission rate be exceedingly fast, relative 4G mobile communication technology improves a magnitude or higher, its speed can reach 10GB/S, and needs can meet mobile Internet flow after coming 10 years and increase the growth requirement of 1000 times.At present, low-frequency spectra resource is very crowded, be difficult to the demand meeting following 5G communication, open up the inevitable choice that new frequency range becomes 5G, and millimeter wave due to its have frequency spectrum resource to enrich, the unique performance such as directionality is good, antijamming capability is strong, receive increasing concern, wherein, the antenna of millimeter wave transceiving system front end is particularly important, and the performance such as gain, bandwidth, efficiency of antenna directly decides the quality of system.Conventional microstrip antennas frequency band is narrower, can not meet the 60GHz bandwidth requirements of millimeter wave frequency band, and feeder line has stronger radiation loss, causes whole aerial array efficiency not high.
Summary of the invention
Object to be solved by this invention is to provide a kind of suspension micro-strip antenna array for 60GHz millimetre-wave attenuator and antenna thereof, there is wider bandwidth, radiation loss is less, and be easy to integrated with plane millimetre-wave circuit, for a kind of 60GHz millimeter wave micro-strip antenna of the feeding network excitation be made up of co-planar waveguide and coplanar two-conductor line, may be used in following millimetre-wave attenuator and radar system.
For solving the problem, the present invention proposes a kind of suspension micro-strip antenna array for 60GHz millimetre-wave attenuator, comprises antenna element and feeding network, and described antenna element arranges in the mode of upper and lower two row, bay number is that 2 × (2n) is individual, and n is positive integer; Described feeding network comprises impedance transformer, coplanar two-conductor line, co-planar waveguide and connects the power divider of coplanar two-conductor line and co-planar waveguide;
Wherein, each bay connects impedance transformer described in, and the impedance transformer of the bay that antenna element is up and the impedance transformer of descending bay are oppositely arranged; Coplanar two-conductor line is coupled together by each impedance transformer and antenna element; Power divider described in one is connected in coplanar two-conductor line axial centre position; Described co-planar waveguide one termination power divider, other end configuration feed port.
According to one embodiment of present invention, described bay is rectangular configuration.
According to one embodiment of present invention, the length of described rectangular configuration is configured to the half wavelength of Antenna Operation midband frequency ripple.
According to one embodiment of present invention, described bay is circular configuration.
According to one embodiment of present invention, the distance between two adjacent on described aerial array column direction bays is 0.7 ~ 0.8 wavelength of Antenna Operation wave band highest frequency ripple.
According to one embodiment of present invention, the distance between two adjacent on described aerial array line direction bays is 1 medium wavelength of the centre frequency ripple of Antenna Operation wave band.
According to one embodiment of present invention, described impedance transformer is quarter-wave change line.
According to one embodiment of present invention, described power divider is configured to a road and divides two road devices.
The present invention additionally uses following technical scheme: the antenna of a kind of use aerial array as described in aforementioned any one, comprises circuit substrate; Be opened in the groove on circuit substrate; Be positioned at the reflecting plate on bottom portion of groove surface; To be positioned at above groove and to coordinate circuit substrate to connect with the substrate forming cavity; Be located at substrate side to the aerial array on the surface of cavity; And be formed in the described feed port electrical connection of on circuit substrate and one end and aerial array, the conduction band of the other end for being electrically connected with radio frequency chip.
According to one embodiment of present invention, described radio frequency chip is connected on described circuit substrate, and radio frequency chip connects described conduction band by its pin.
After adopting technique scheme, the present invention has following beneficial effect compared to existing technology: aerial array adopts coplanar two-conductor line and co-planar waveguide to coordinate the feeding network of feed, this feeding network makes electromagnetic field mainly concentrate between transfer wire, its transmission performance is by the impact of distance between floor on the conduction band of antenna and substrate, and radiation loss is minimum, the electric current that coplanar two-conductor line passes through is completely reverse, can be used for providing reverse energization to the bay of heteropleural feed, not only simplify feeding network, and improve the efficiency of whole feeding network, the antenna of this aerial array is adopted to be the 60GHz millimeter wave micro-strip antenna that a kind of feeding network be made up of co-planar waveguide and coplanar two-conductor line encourages, may be used in following millimetre-wave attenuator and radar system.
In addition, this microstrip antenna arranges cavity below counterpart substrate on circuit substrate, both the height having increased microstrip antenna turn reduces the effective dielectric constant of substrate, thus can widen the bandwidth of antenna, the feed port of aerial array is electrically drawn by the conduction band on circuit substrate, and aerial array forms the structure of suspension, reduce the length of feeder line, improve feed efficiency, conduction band can be electrically connected with the radio frequency pin of radio frequency chip, is easy to circuit integrated.
Accompanying drawing explanation
Fig. 1 is the structural representation of the millimeter wave suspension microstrip antenna of one embodiment of the invention;
Fig. 2 is the structural representation of the suspension micro-strip antenna array for 60GHz millimetre-wave attenuator of one embodiment of the invention;
Fig. 3 is the structural representation of the suspension micro-strip antenna array for 60GHz millimetre-wave attenuator of another embodiment of the present invention;
Fig. 4 is the return loss plot of inventive antenna array in 57-64GHz frequency range;
Fig. 5 is the gain curve figure of inventive antenna array in 57-64GHz frequency range;
Fig. 6 is the efficiency curve diagram of inventive antenna array in 57-64GHz frequency range;
Fig. 7, Fig. 8, Fig. 9 are that inventive antenna array is respectively at the two-dimensional directional figure of 57GHz, 61GHz, 64GHz frequency.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.
Set forth a lot of detail in the following description so that fully understand the present invention.But the present invention can be much different from alternate manner described here to implement, those skilled in the art can when without prejudice to doing similar popularization when intension of the present invention, therefore the present invention is by the restriction of following public concrete enforcement.
Referring to Fig. 1, suspension microstrip antenna of the present invention, comprises circuit substrate 3, the cavity 7 on circuit substrate 3, reflecting plate 8, substrate 6, aerial array 5, and conduction band 4.What aerial array 5 adopted is a kind of suspension micro-strip antenna array for 60GHz millimetre-wave attenuator of the present invention.
Wherein, cavity 7 is on circuit substrate 3, form groove and above groove, arrange substrate 6 thus the cavity formed, and this circuit substrate 3 is such as PCB, and cavity 7 inside can be air; Reflecting plate 8 is positioned in cavity 7 lower surface and on the surface of cavity 7, arranges aerial array 5 at substrate 6; Substrate 6, aerial array 5, cavity 7 and reflecting plate 8 form the electromagenetic wave radiation of microstrip antenna and the workpiece of reception, certain substrate 6 another be also provided with on the surface and form the floor of microstrip antenna, the air layer that cavity 7 is formed reduces the effective dielectric constant of substrate, thus can the bandwidth of broadening antenna; Microstrip antenna is by the feed port feed of aerial array 5, feed port connects conduction band 5, substrate 7 can be connected on circuit substrate 3 by pin, this conduction band is formed on circuit substrate 3 and the electrical connection of the feed port of one end and aerial array, the other end is for being electrically connected with radio frequency chip, feed port is electrically drawn by conduction band 4, thus can form the mounting structure of antenna, reduces the length of feeder line, improve feed efficiency, be convenient to circuit integrated.
Preferably, substrate 6 is arranged on the side on circuit substrate 3 surface, opposite side arranges a radio frequency chip 1, radio frequency chip 1 is connected on circuit substrate by pin 2, the feed port of aerial array 5 is arranged near this radio frequency chip 1, radio frequency chip 1 connects conduction band 4 by its pin 2, and form mounting structure, all the other pins of radio frequency chip 1 may be used for the connection with other chips or components and parts.
Referring to Fig. 2, a kind of suspension micro-strip antenna array for 60GHz millimetre-wave attenuator of the present invention, namely aerial array 5 comprises antenna element and feeding network, and antenna element is arranged in the mode of upper and lower two row, bay 51 and 54 number is that 2 × (2n) is individual, and n is positive integer; Described feeding network comprises impedance transformer 52 and 53, coplanar two-conductor line 55, co-planar waveguide 57 and is connected the power divider 56 of coplanar two-conductor line 55 and co-planar waveguide 57.
Fig. 2 shows the aerial array that bay 51 and 54 number is 8, upper behavior 4 bays 51, lower behavior 4 bays 54, in the present embodiment, described bay 51 and 54 is rectangular configuration, the length of rectangular configuration is configured to the half wavelength of Antenna Operation midband frequency ripple, the length direction being rectangle mechanism with the direction that coplanar two-conductor line is vertical.
Each bay connects an impedance transformer, the impedance transformer 52 of the bay 51 that antenna element is up and the impedance transformer 53 of descending bay 54 are oppositely arranged, the impedance transformer of up-downgoing bay is connected on two wires of coplanar two-conductor line 55, each impedance transformer 52 of up bay 51 couples together by one of coplanar two-conductor line 55, and each impedance transformer 53 of descending bay 54 couples together by another root; A power divider 56 is connected in coplanar two-conductor line 55 axial centre position, namely power divider 56 is arranged on the center position of aerial array 5, be used for by the signal converting transmission of coplanar two-conductor line 55 to co-planar waveguide 57, co-planar waveguide 57 1 termination power divider 56, other end configuration feed port.
Coplanar two-conductor line 55 refers to the two parallel wires in the coplanar setting of same media plane in the present invention, and be different from co-planar waveguide, the wire count of co-planar waveguide is more, such as, co-planar waveguide 57 in Fig. 2, and the number of its wire is three.Described power divider 56 is configured to a road and divides two road devices, in the present embodiment, impedance transformer 52 and 53 adopts quarter-wave change line, quarter-wave change line, between coplanar two-conductor line 55, and coplanar two-conductor line 55, connection between co-planar waveguide 57 are vertical connection.
Fig. 3 shows the suspension micro-strip antenna array for 60GHz millimetre-wave attenuator of another embodiment, aerial array comprises antenna element and feeding network, antenna element is arranged in the mode of upper and lower two row bays, bay number is 2 × 4, n is positive integer, upper behavior 4 bays 51 ', lower behavior 4 bays 54 '; Described feeding network comprises impedance transformer 52 ' and 53 ', coplanar two-conductor line 55 ', co-planar waveguide 57 ' and is connected the power divider 56 ' of coplanar two-conductor line 55 ' and co-planar waveguide 57 ', be that bay 51 ' and 54 ' is circular configuration with the difference of Fig. 2 embodiment in it, all the other something in common do not repeat them here.
Preferably, the distance between two adjacent on antenna element column direction bays is 0.7 ~ 0.8 wavelength of Antenna Operation wave band highest frequency ripple.Distance between two bays adjacent on antenna element line direction is 1 medium wavelength of the centre frequency ripple of Antenna Operation wave band.
Illustrate that the present invention suspends the performance of this aerial array when microstrip antenna uses in 60GHz millimeter wave below by Fig. 4 ~ Fig. 9.
Fig. 4 shows the analogous diagram of aerial array in the return loss plot of 57-64GHz frequency range, and visible in figure, return loss is lower, reaches minimum in the return loss of 61-64GHz frequency range.
Fig. 5 shows the gain curve of aerial array in 57-64GHz frequency range, and in 58-64GHz frequency range, gain can reach 15.50dB.
Fig. 6 shows the efficiency curve of aerial array in 57-64GHz frequency range, can obtain higher transmitting-receiving efficiency at 57-63GHz band antenna.
Fig. 7, Fig. 8, Fig. 9 be inventive antenna array respectively at the two-dimensional directional figure of 57GHz, 61GHz, 64GHz frequency, in each frequency directional diagram, the change of the first secondary lobe and lobe width is not obvious, and thus aerial array has good directivity.
The present invention suspends micro-strip antenna array and adopts coplanar two-conductor line and co-planar waveguide to coordinate the feeding network of feed, this feeding network makes electromagnetic field mainly concentrate between transfer wire, its transmission performance is by the impact of distance between floor on the conduction band of antenna and substrate, and radiation loss is minimum, the electric current that coplanar two-conductor line passes through is completely reverse, can be used for providing reverse energization to the bay of heteropleural feed, not only simplify feeding network, and improve the efficiency of whole feeding network, the antenna of this aerial array is adopted to be the 60GHz millimeter wave micro-strip antenna that a kind of feeding network be made up of co-planar waveguide and coplanar two-conductor line encourages, may be used in following millimetre-wave attenuator and radar system.
In addition, this suspension microstrip antenna arranges cavity below counterpart substrate on circuit substrate, both the height having increased microstrip antenna turn reduces the effective dielectric constant of substrate, thus can widen the bandwidth of antenna, the feed port of aerial array is electrically drawn by the conduction band on circuit substrate, and aerial array forms the structure of suspension, reduce the length of feeder line, improve feed efficiency, conduction band can be electrically connected with the radio frequency pin of radio frequency chip, is easy to circuit integrated.
Although the present invention with preferred embodiment openly as above; but it is not for limiting claim; any those skilled in the art without departing from the spirit and scope of the present invention; can make possible variation and amendment, the scope that therefore protection scope of the present invention should define with the claims in the present invention is as the criterion.
Claims (10)
1. for a suspension micro-strip antenna array for 60GHz millimetre-wave attenuator, it is characterized in that, comprise antenna element and feeding network, described antenna element arranges in the mode of upper and lower two row, and bay number is that 2 × (2n) is individual, and n is positive integer; Described feeding network comprises impedance transformer, coplanar two-conductor line, co-planar waveguide and connects the power divider of coplanar two-conductor line and co-planar waveguide;
Wherein, each bay connects impedance transformer described in, and the impedance transformer of the bay that antenna element is up and the impedance transformer of descending bay are oppositely arranged; Coplanar two-conductor line is coupled together by each impedance transformer and antenna element; Power divider described in one is connected in coplanar two-conductor line axial centre position; Described co-planar waveguide one termination power divider, other end configuration feed port.
2., as claimed in claim 1 for the suspension micro-strip antenna array of 60GHz millimetre-wave attenuator, it is characterized in that, described bay is rectangular configuration.
3., as claimed in claim 2 for the suspension micro-strip antenna array of 60GHz millimetre-wave attenuator, it is characterized in that, the length of described rectangular configuration is configured to the half wavelength of Antenna Operation midband frequency ripple.
4., as claimed in claim 1 for the suspension micro-strip antenna array of 60GHz millimetre-wave attenuator, it is characterized in that, described bay is circular configuration.
5., as claimed in claim 1 for the suspension micro-strip antenna array of 60GHz millimetre-wave attenuator, it is characterized in that, the distance between two bays adjacent on described aerial array column direction is 0.7 ~ 0.8 wavelength of Antenna Operation wave band highest frequency ripple.
6., as claimed in claim 5 for the suspension micro-strip antenna array of 60GHz millimetre-wave attenuator, it is characterized in that, the distance between two bays adjacent on described aerial array line direction is 1 medium wavelength of the centre frequency ripple of Antenna Operation wave band.
7. as claimed in claim 1 for the suspension micro-strip antenna array of 60GHz millimetre-wave attenuator, it is characterized in that, described impedance transformer is quarter-wave change line.
8., as claimed in claim 1 for the suspension micro-strip antenna array of 60GHz millimetre-wave attenuator, it is characterized in that, described power divider is configured to a road and divides two road devices.
9. use the antenna as aerial array as described in any one in claim 1-8, it is characterized in that, comprise circuit substrate; Be opened in the groove on circuit substrate; Be positioned at the reflecting plate on bottom portion of groove surface; To be positioned at above groove and to coordinate circuit substrate to connect with the substrate forming cavity; Be located at substrate side to the described aerial array on the surface of cavity; And be formed in the described feed port electrical connection of on circuit substrate and one end and aerial array, the conduction band of the other end for being electrically connected with radio frequency chip.
10. antenna as claimed in claim 9, it is characterized in that, described radio frequency chip is connected on described circuit substrate, and radio frequency chip connects described conduction band by its pin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510347118.6A CN104966903B (en) | 2015-06-19 | 2015-06-19 | A kind of suspension micro-strip antenna array and its antenna for 60GHz millimetre-wave attenuators |
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| CN201510347118.6A CN104966903B (en) | 2015-06-19 | 2015-06-19 | A kind of suspension micro-strip antenna array and its antenna for 60GHz millimetre-wave attenuators |
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| CN104966903B CN104966903B (en) | 2018-04-27 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109301474A (en) * | 2018-11-13 | 2019-02-01 | 南京信息工程大学 | A kind of antenna for mobile phone suitable for 5G millimeter-wave communication system |
| CN109863511A (en) * | 2016-10-28 | 2019-06-07 | 艾利丹尼森零售信息服务公司 | It is designed to the RFID label tag to work on reluctant substrate |
| CN110011051A (en) * | 2018-12-27 | 2019-07-12 | 瑞声科技(新加坡)有限公司 | A kind of antenna and car-mounted device |
| CN110311219A (en) * | 2019-07-18 | 2019-10-08 | 中国电子科技集团公司第三十八研究所 | A kind of series feed micro-strip array antenna and system for millimetre-wave radar |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110311219A (en) * | 2019-07-18 | 2019-10-08 | 中国电子科技集团公司第三十八研究所 | A kind of series feed micro-strip array antenna and system for millimetre-wave radar |
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