CN112448153B - Antenna radiation device and antenna - Google Patents
Antenna radiation device and antenna Download PDFInfo
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- CN112448153B CN112448153B CN201910825975.0A CN201910825975A CN112448153B CN 112448153 B CN112448153 B CN 112448153B CN 201910825975 A CN201910825975 A CN 201910825975A CN 112448153 B CN112448153 B CN 112448153B
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- 230000005855 radiation Effects 0.000 title claims abstract description 158
- 238000005452 bending Methods 0.000 claims abstract description 78
- 230000001965 increasing effect Effects 0.000 claims description 11
- 238000004891 communication Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000011188 CEM-1 Substances 0.000 description 2
- 101100257127 Caenorhabditis elegans sma-2 gene Proteins 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 101150115183 WASF1 gene Proteins 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
Abstract
The invention discloses an antenna radiation device and an antenna, wherein the antenna radiation device comprises a plurality of antenna elements arranged on the same plane: a feed point, at least two radiating elements, and at least one inverter; any two radiating units are connected through a corresponding phase inverter to form an antenna radiating main body; a feeding point for feeding the antenna radiation body from a head end of the antenna radiation body to a distal end of the antenna radiation body; the inverter comprises a first bending section and a second bending section; the first bending section and the second bending section are in symmetrical structures on a plane, the first end of the first bending section is connected with one end of a corresponding radiating unit, the second end of the first bending section is connected with the first end of a corresponding second bending section, and the second end of the second bending section is connected with one end of a corresponding other radiating unit. The invention can provide an antenna radiation device which has better phase consistency in an application frequency band, is horizontal and omnidirectional, and has wide bandwidth and high gain.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to an antenna radiation device and an antenna.
Background
With the development of wireless communication technology, mobile radio communication is becoming popular, and the broadband of a communication system puts higher demands on the bandwidth of an antenna radiation device. However, the existing antenna radiation device has low gain, narrow bandwidth and uneven signal coverage, and particularly, the uniformity of the phase is difficult to be ensured in the application frequency band, and the requirement of wireless communication development cannot be met.
Disclosure of Invention
The embodiment of the invention aims to provide an antenna radiation device which has better phase consistency in an application frequency band, is horizontal and omnidirectional, and has wide bandwidth and high gain.
To achieve the above object, an embodiment of the present invention provides an antenna radiation device, including: a feed point, at least two radiating elements, and at least one inverter;
any two radiating units are connected through a corresponding one of the inverters to form an antenna radiating main body; the feed point is used for feeding the antenna radiation body from the head end of the antenna radiation body to the tail end of the antenna radiation body;
the inverter comprises a first bending section and a second bending section; the first bending section and the second bending section are in symmetrical structures on the plane, the first bending section is in an inverted V shape, the second bending section is in an inverted V shape, the joint of the first bending section and the second bending section is in a V shape, the first end of the first bending section is connected with one corresponding end of one radiating unit, the second end of the first bending section is connected with the first end of the corresponding second bending section, and the second end of the second bending section is connected with one corresponding end of the other radiating unit;
the inverter further comprises an extension section, the extension section is connected between the second end of the second bending section and one end of the corresponding other radiating unit, the extension section is gradually expanded, one end of the extension section is narrow, the other end of the extension section is wide, one narrow end of the extension section is connected with the second end of the second bending section, and one wide end of the extension section is connected with one end of the corresponding other radiating unit.
Preferably, the first bending section is bent to form a first included angle, the second bending section is bent to form a second included angle, and the first bending section and the second bending section form a third included angle; the first included angle, the second included angle and the third included angle are the same in included angle, and the included angle is 60-90 degrees.
Preferably, the antenna radiation device further comprises a dielectric plate; the feed point, the radiating unit and the inverter are all arranged on the same surface of the dielectric plate.
Preferably, the antenna radiation device further includes a ground branch, and the ground branch is connected to the antenna radiation body through the feeding point.
Preferably, the ground branch is a dipole ground branch and is H-shaped.
Preferably, the number of the radiating units is at least three, and the radiating units comprise three of a first radiating unit, a second radiating unit and a third radiating unit; the number of the inverters is at least two, and the inverters comprise a first inverter and a second inverter;
the head end of the first radiating element is formed as the head end of the antenna radiating body, the tail end of the first radiating element is connected with the head end of the second radiating element through the first phase inverter, and the tail end of the second radiating element is connected with the head end of the third radiating element through the second phase inverter;
the first radiation unit comprises three rectangular blocks which are sequentially connected from the head end to the tail end and have widths which are gradually increased;
the second radiation unit comprises a trapezoid block and two rectangular blocks with increasing widths, wherein the trapezoid blocks and the two rectangular blocks are sequentially connected from the head end to the tail end of the second radiation unit;
the third radiating unit comprises a trapezoid block and a rectangular block which are sequentially connected from the head end to the tail end.
Preferably, the number of radiating elements is at least four, and further comprising a fourth radiating element; the number of the inverters is at least three, and the inverter further comprises a third inverter; the head end of the fourth radiating element is connected with the tail end of the third radiating element through the third inverter, and the structure of the fourth radiating element is consistent with that of the third radiating element.
Preferably, the number of the radiating elements is five, and further includes a fifth radiating element, the number of the inverters is four, and further includes a fourth inverter; the head end of the fifth radiating element is connected with the tail end of the fourth radiating element through the fourth inverter, and the structure of the fifth radiating element is consistent with that of the third radiating element.
The embodiment of the invention also provides an antenna, which comprises the antenna radiation device.
Compared with the prior art, the antenna radiation device and the antenna provided by the embodiment of the invention have the advantages that the inverter which is integrally in a symmetrical structure is connected between the two radiation units, so that currents on the inverters can be mutually offset, the currents of the radiation units are in the same direction, the antenna radiation device has better phase consistency in an application frequency band, meanwhile, the directional diagram consistency in the frequency band is good, the antenna is horizontal and omnidirectional, and the bandwidth of the antenna radiation device is obviously improved. Meanwhile, the gain of the antenna radiation device can be effectively improved by increasing the number of the radiation units.
Drawings
Fig. 1 is a schematic diagram of an antenna radiation device according to an embodiment of the present invention.
Fig. 2 is a current distribution situation of an antenna radiation device in an application frequency band according to an embodiment of the present invention.
Fig. 3 is a graph showing scattering parameters with frequency for an antenna radiation device including three radiation units according to an embodiment of the present invention.
Fig. 4 is a horizontal radiation pattern of an antenna radiation device including three radiation units at frequency points of 6.2GHz, 6.5GHz and 6.8GHz according to an embodiment of the present invention.
Fig. 5 is a vertical radiation pattern of an antenna radiation device including three radiation units at frequency points of 6.2GHz, 6.5GHz and 6.8GHz according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of an antenna radiation device including four radiation units according to an embodiment of the present invention.
Fig. 7 is a graph showing scattering parameters as a function of frequency for an antenna radiation device including four radiation elements according to an embodiment of the present invention.
Fig. 8 is a horizontal radiation pattern of an antenna radiation device including four radiation units at frequency points of 6.2GHz, 6.5GHz and 6.8GHz according to an embodiment of the present invention.
Fig. 9 is a vertical radiation pattern of an antenna radiation device including four radiation units at frequency points of 6.2GHz, 6.5GHz and 6.8GHz according to an embodiment of the present invention.
Fig. 10 is a schematic structural diagram of an antenna radiation device including five radiation units according to an embodiment of the present invention.
Fig. 11 is a graph showing scattering parameters with frequency for an antenna radiation device including five radiation elements according to an embodiment of the present invention.
Fig. 12 is a horizontal radiation pattern of an antenna radiation device including five radiation units at frequency points of 6.2GHz, 6.5GHz and 6.8GHz according to an embodiment of the present invention.
Fig. 13 is a vertical radiation pattern of an antenna radiation device including five radiation units at frequency points of 6.2GHz, 6.5GHz and 6.8GHz according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a schematic diagram of an antenna radiation device according to an embodiment of the present invention includes: a feeding point 31, at least two radiating elements and at least one inverter;
any two radiating units are connected through a corresponding one of the inverters to form an antenna radiating main body; the feeding point 31 is configured to feed the antenna radiation body from a head end of the antenna radiation body to a distal end of the antenna radiation body;
the inverter comprises a first bending section and a second bending section; the first bending section and the second bending section are in symmetrical structures on the plane, the first end of the first bending section is connected with one end of a corresponding radiating unit, the second end of the first bending section is connected with the first end of the corresponding second bending section, and the second end of the second bending section is connected with one end of a corresponding other radiating unit.
Specifically, the antenna radiation device includes: a feed point 31, at least two radiating elements and at least one inverter. The radiation unit is used for radiating and receiving radio waves. The total length of the inverter is 1/2 wavelength, and the current at each point on the total length of the inverter can be counteracted by a current opposite to the current, so that the electromagnetic radiation of the inverter is small.
Any two radiating elements are connected through a corresponding inverter to form an antenna radiating body. Because the currents on the inverters cancel each other out, the currents on each radiating element are in phase, so that vectors of fields of all points in space of the antenna radiating body are superimposed, the effect of enhancing the fields is achieved, and the antenna gain is improved. And a feeding point 31 for feeding the antenna radiating body from a head end of the antenna radiating body to a terminal end of the antenna radiating body, for supplying power and transmitting radio waves for normal operation of the antenna radiating body.
The inverter comprises a first bending section and a second bending section, and is of an M shape as a whole. The first bending section and the second bending section are in symmetrical structures on a plane, the first end of the first bending section is connected with one end of a corresponding radiating unit, the second end of the first bending section is connected with the first end of a corresponding second bending section, and the second end of the second bending section is connected with one end of a corresponding other radiating unit. In order to enable the antenna radiation main body to have better phase consistency in an application frequency band, the wiring of the phase inverter can be adjusted, the bending included angle and the length of the phase inverter are included, and the currents on the phase inverter are mutually offset, so that the currents of all radiation units are in the same direction, and the bandwidth of the antenna radiation main body is expanded. Phase uniformity means that the currents of the radiating elements at the tail end of the inverters, i.e. the head end of the radiating elements, remain uniform and the current direction in the radiating elements remains uniform.
Referring to fig. 2, an embodiment of the present invention provides a current distribution situation of an antenna radiation device in an application frequency band, where an arrow direction is a surface current direction on the antenna radiation device. The currents on the radiating elements are co-directional so that the field in space is superimposed and enhanced. The more radiating elements, the higher the gain of the antenna radiating arrangement, within a certain number of ranges. In general, when the radiating elements reach seven or more, the gain of the antenna radiating device is not increased significantly, because the current on the radiating element far from the feeding point is gradually reduced with the increase of the radiating elements, and the gain improving effect of the antenna is gradually weakened.
According to the embodiment of the invention, the inverter which is integrally in a symmetrical structure is connected between the two radiating units, so that currents on the inverters can be mutually offset, currents of the radiating units are in the same direction, the antenna radiating device has good phase consistency in an application frequency band, and the bandwidth of an antenna radiating main body is expanded.
As an improvement of the above solution, the inverter further includes an extension section, and the extension section is connected between the second end of the second bending section and one end of the corresponding other radiating element.
Specifically, in order to make the inverter well connected between the radiating elements at two ends of the inverter, the inverter further comprises an extension section connected between the second end of the second bending section and one end of the corresponding other radiating element. The extension section is gradually-expanded, one end is narrow, the other end is wide, one narrow end is connected with the second end of the second bending section, one wide end is connected with one end of the corresponding other radiating unit, and the joint is located in the center of one end of the other radiating unit.
As an improvement of the above scheme, the first bending section is bent to form a first included angle, the second bending section is bent to form a second included angle, and the first bending section and the second bending section form a third included angle; the first included angle, the second included angle and the third included angle are the same in angle, and the angle is 60-90 degrees.
Specifically, the first bending section is bent to form a first included angle, the second bending section is bent to form a second included angle, and the first bending section and the second bending section form a third included angle; the angles of the first included angle, the second included angle and the third included angle are the same, and are 60-90 degrees, that is, the first bending section is in an inverted V shape, the second bending section is also in an inverted V shape, the connection part of the first bending section and the second bending section is in a V shape, and the included angle of each V shape is 60-90 degrees, preferably 70 degrees. In practical adjustment, the included angles are not fixed values, and each antenna radiation device may have a little deviation; the setting of a specific radiating element may also affect the choice of the included angle, but all to better achieve the effect of the mutual cancellation of the currents of the inverters.
As an improvement of the above-mentioned scheme, the antenna radiation device further comprises a dielectric plate 4; the feeding point 31, the radiating element and the inverter are all arranged on the same surface of the dielectric plate 4.
Specifically, the antenna radiation device further comprises a dielectric plate 4; the feeding point 31, the radiating element and the inverter are all provided on the same side of the dielectric plate 4, thereby forming an antenna radiating device of the printed antenna, so as to be better assembled in a wireless communication product. The substrate of the dielectric plate 4 adopts an epoxy glass cloth paper substrate (CEM-1 plate) with low price, thereby reducing the cost of the antenna radiation device.
As an improvement of the above-mentioned scheme, the antenna radiation device further includes a ground stub 32, and the ground stub 32 is connected to the antenna radiation body through the feeding point 31.
Specifically, the antenna radiation device further includes a ground stub 32, and the ground stub 32 is connected to the antenna radiation body through the feeding point 31. As shown in fig. 1, a feed point 31 is located between the head end of the antenna radiating body and a ground stub 32 for connecting a feed line with the antenna radiating body. The ground stub 32 is used to adjust the impedance in the antenna radiating arrangement to expand the antenna bandwidth and increase the antenna gain.
As a modification of the above scheme, the ground branch 32 is a dipole ground branch, and is H-shaped.
Specifically, the ground branch 32 is a dipole ground branch, is in an H-shape, is of a vertical symmetrical structure, and is transversely placed, namely is consistent with the direction from the head end to the tail end of the antenna radiation main body, so that electromagnetic loops on two sides of the antenna radiation main body are uniform, the upper half part of the H shape and the head end of the antenna radiation main body jointly form a matching bandwidth optimization structure, the bandwidth of the antenna radiation main body can be improved, the lower half part of the H shape and the current direction of the radio frequency cable outer conductor are opposite, radiation of the radio frequency cable outer conductor can be restrained, the influence of current on a feed line on the radiation of the antenna radiation main body is weakened, and the effect of feed balance is achieved.
As an improvement of the above-mentioned scheme, the number of the radiating elements is at least three, and the radiating elements include three of the first radiating element 11, the second radiating element 12 and the third radiating element 13; the number of the inverters is at least two, and the inverters comprise two inverters, namely a first inverter 21 and a second inverter 22;
the head end of the first radiating element 11 is formed as the head end of the antenna radiating body, the tail end of the first radiating element 11 is connected with the head end of the second radiating element 12 through the first inverter 21, and the tail end of the second radiating element 12 is connected with the head end of the third radiating element 13 through the second inverter 22;
the first radiation unit 11 comprises three rectangular blocks which are sequentially connected from the head end to the tail end and have progressively increased widths;
the second radiation unit 12 comprises a trapezoid block and two rectangular blocks with increasing widths, which are sequentially connected from the head end to the tail end;
the third radiating element 13 includes a trapezoid block and a rectangle block sequentially connected from the head end to the tail end.
Specifically, the number of radiation units is at least three, and includes three radiation units of a first radiation unit 11, a second radiation unit 12, and a third radiation unit 13; the number of inverters is at least two, and includes two inverters, namely a first inverter 21 and a second inverter 22. This is to better describe the preferred embodiment for example 1, which has three cases: the antenna radiating body includes three radiating elements, the antenna radiating body includes four radiating elements, and the antenna radiating body includes five radiating elements, and a case where the antenna radiating body includes three radiating elements will be described first.
The first radiating element 11 has a head end formed as a head end of the antenna radiating body, the tail end of the first radiating element 11 is connected with the head end of the second radiating element 12 through the first inverter 21, and the tail end of the second radiating element 12 is connected with the head end of the third radiating element 13 through the second inverter 22, that is, the arrangement head-to-tail directions of the first radiating element 11, the second radiating element 12 and the third radiating element 13 on the same plane are identical, and at the same time, the two radiating elements are connected through a corresponding inverter.
The first radiating element 11 comprises three rectangular blocks which are sequentially connected from the head end to the tail end and gradually increased in width, and the structure can be better abutted to the H-shaped ground branch knot 32, so that a matching bandwidth optimization structure is formed with the ground branch knot 32, the bandwidth of the antenna radiating main body can be improved, the feeding point 31 is conveniently formed, and the feeding impedance is reduced.
The second radiating element 12 comprises a trapezoid block and two rectangular blocks with gradually increased widths, wherein the trapezoid block is sequentially connected from the head end to the tail end of the trapezoid block, the upper bottom of the trapezoid block is as wide as one end of the first bending section of the first inverter 21, so that the first inverter 21 can be better connected, the lower bottom of the trapezoid block is as wide as the connected rectangular blocks, and the phase of current in the second radiating element 12 can be better kept consistent.
The third radiating element 13 includes a trapezoidal block and a rectangular block connected in order from the head end to the tail end thereof. The upper bottom of the trapezoid block is as wide as one end of the first bending section of the second inverter 22, so that the second inverter 22 can be better connected, and the lower bottom of the trapezoid block is as wide as the connected rectangle block, so that the phase of the current in the third radiating unit 13 can be better kept consistent.
Referring to fig. 3, a graph of scattering parameters versus frequency for an antenna radiation device including three radiation elements according to an embodiment of the present invention is shown. As can be seen from FIG. 3, the S parameter of the antenna radiation device is smaller than-10 dB in the frequency band of 4.0-7.8 GHz, and the antenna radiation device is well matched. The antenna impedance bandwidth reaches more than 50%.
Referring to fig. 4 and fig. 5, a horizontal radiation pattern and a vertical radiation pattern of an antenna radiation device including three radiation units at frequency points of 6.2GHz, 6.5GHz and 6.8GHz according to an embodiment of the present invention are shown, and as can be seen from fig. 4 and fig. 5, the maximum gain of the antenna radiation device is 5.65dBi in the frequency band of 6 to 7GHz, and the maximum gain of the antenna radiation device is 5.60dBi in the horizontal plane. The antenna radiation device is horizontal and omnidirectional, meets the application requirements of common external antennas, has good consistency of all frequency points in the working frequency band, and can effectively reduce the influence of frequency point change on the performance of the whole machine.
As a modification of the above, the number of the radiation units is at least four, and further includes a fourth radiation unit 14; the number of the inverters is at least three, and further includes a third inverter 23; the head end of the fourth radiating element 14 is connected to the tail end of the third radiating element 13 through the third inverter 23, and the structure of the fourth radiating element 14 is consistent with that of the third radiating element 13.
Specifically, the number of radiating elements is at least four, and further includes a fourth radiating element 14; the number of inverters is at least three and further comprises a third inverter 23, that is, the present embodiment is the addition of one fourth radiating element 14 and one third inverter 23 on the basis of the previous embodiment. The head end of the fourth radiating element 14 is connected to the tail end of the third radiating element 13 through a third inverter 23, and the structure of the fourth radiating element 14 is consistent with that of the third radiating element 13.
The present embodiment is mainly directed to the case where the antenna radiating body includes four radiating elements. Referring to fig. 6, a schematic structural diagram of an antenna radiation device with four radiation units according to an embodiment of the present invention is shown.
Referring to fig. 7, a graph of scattering parameters versus frequency for an antenna radiation device including four radiation elements according to an embodiment of the present invention is provided. As can be seen from FIG. 7, the S parameter of the antenna radiation device is smaller than-10 dB in the frequency band of 4.0-7.6 GHz, the antenna impedance bandwidth is sufficient, and the matching is good.
Referring to fig. 8 and fig. 9, respectively, the horizontal radiation patterns and the vertical radiation patterns of the antenna radiation device including four radiation units provided by the embodiment of the invention at the frequency points of 6.2GHz, 6.5GHz and 6.8GHz, as can be seen from fig. 8 and fig. 9, the maximum gain of the antenna radiation device is 6.18dBi in the frequency band of 6-7 GHz, and the maximum gain of the antenna radiation device is 6.04dBi in the horizontal plane. Similarly, the antenna radiation device is horizontally omnidirectional, and the consistency of each frequency point in the working frequency band is good.
As an improvement of the above-described scheme, the number of the radiating elements is five, and further includes a fifth radiating element 15, the number of the inverters is four, and further includes a fourth inverter 24; the head end of the fifth radiating element 15 is connected to the tail end of the fourth radiating element 14 through the fourth inverter 24, and the structure of the fifth radiating element 15 is identical to that of the third radiating element 13.
Specifically, the number of radiating elements is five, and further includes a fifth radiating element 15, the number of inverters is four, and further includes a fourth inverter 24, that is, the present embodiment is the embodiment in which one fifth radiating element 15 and one fourth inverter 24 are added to the above embodiment. The head end of the fifth radiating element 15 is connected to the tail end of the fourth radiating element 14 through the fourth inverter 24, and the structure of the fifth radiating element 15 is identical to that of the third radiating element 13.
The present embodiment is mainly directed to the case where the antenna radiating body includes five radiating elements. Referring to fig. 10, a schematic structural diagram of an antenna radiation device with five radiation units according to an embodiment of the present invention is shown.
Referring to fig. 11, a graph of scattering parameters versus frequency for an antenna radiation device including five radiation elements according to an embodiment of the present invention is shown. As can be seen from FIG. 11, the S parameter of the antenna radiation device is smaller than-10 dB in the frequency band of 4.0-7.6 GHz, the antenna impedance bandwidth is sufficient, and the matching is good.
Referring to fig. 12 and fig. 13, respectively, the horizontal radiation patterns and the vertical radiation patterns of the antenna radiation device including five radiation units provided by the embodiment of the invention at the frequency points of 6.2GHz, 6.5GHz and 6.8GHz, as can be seen from fig. 12 and fig. 13, the maximum gain of the antenna radiation device is 6.75dBi in the frequency band of 6-7 GHz, and the maximum gain of the antenna radiation device is 6.66dBi in the horizontal plane. Similarly, the antenna radiation device is horizontally omnidirectional, and the consistency of each frequency point in the working frequency band is good.
Another embodiment of the present invention also provides an antenna, including an antenna radiation device according to any one of the foregoing embodiments. The antenna also comprises a feeder line, a feed network and a radio frequency cable, which together form an external omni-directional antenna of 6-7 GHz applicable to 802.11ax Wave2. 802.11ax is known as the high efficiency wireless standard (HEW), a sixth generation WiFi technology. 11ax Wave1 supports 2.4GHz and 5GHz bands, and is compatible with 11a/b/g/n/ac downwards. 11ax Wave2 is based on 11ax W1, and enables the frequency range from 5.925GHz to 7.125GHz so as to meet the requirement of wireless devices on higher throughput. At present, 802.11ax Wave2 is not yet commercially available, and no external omni-directional antenna suitable for indoor wireless communication equipment is similar to the external omni-directional antenna. The antenna has better consistency in the horizontal pattern and wider bandwidth within the range of 5.925 GHz-7.125 GHz.
In summary, according to the antenna radiation device and the antenna provided by the embodiments of the present invention, the inverter with the overall M-type symmetrical structure is connected between the two radiation units, so that currents on the inverters can be mutually offset, and thus currents of the radiation units are in the same direction, the antenna radiation device has good phase consistency in an application frequency band, meanwhile, the directional pattern consistency in the frequency band is good, the antenna is horizontal and omnidirectional, and the bandwidth of the antenna radiation device is obviously improved. Meanwhile, the gain of the antenna radiation device can be effectively improved by increasing the number of the radiation units. The antenna radiation device adopts a CEM-1 plate with low price, so that the cost of the antenna is greatly reduced, and the antenna radiation device is suitable for common wireless communication products through the bottom feed of a single-sided dielectric plate and has the characteristic of easy assembly.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.
Claims (9)
1. An antenna radiation device, comprising: a feed point, at least two radiating elements, and at least one inverter;
any two radiating units are connected through a corresponding one of the inverters to form an antenna radiating main body; the feed point is used for feeding the antenna radiation body from the head end of the antenna radiation body to the tail end of the antenna radiation body;
the inverter comprises a first bending section and a second bending section; the first bending section and the second bending section are in symmetrical structures on the plane, the first bending section is in an inverted V shape, the second bending section is in an inverted V shape, the joint of the first bending section and the second bending section is in a V shape, the first end of the first bending section is connected with one corresponding end of one radiating unit, the second end of the first bending section is connected with the first end of the corresponding second bending section, and the second end of the second bending section is connected with one corresponding end of the other radiating unit;
the inverter further comprises an extension section, the extension section is connected between the second end of the second bending section and one end of the corresponding other radiating unit, the extension section is gradually expanded, one end of the extension section is narrow, the other end of the extension section is wide, one narrow end of the extension section is connected with the second end of the second bending section, and one wide end of the extension section is connected with one end of the corresponding other radiating unit.
2. The antenna radiation device according to claim 1, wherein the first bending section is bent to form a first included angle, the second bending section is bent to form a second included angle, and the first bending section and the second bending section form a third included angle; the first included angle, the second included angle and the third included angle are the same in angle, and the angle is 60-90 degrees.
3. The antenna radiating apparatus of claim 1 wherein said antenna radiating apparatus further comprises a dielectric plate; the feed point, the radiating unit and the inverter are all arranged on the same surface of the dielectric plate.
4. The antenna radiation device according to claim 1, further comprising a ground stub connected to the antenna radiation body through the feeding point.
5. The antenna radiation device as claimed in claim 4, wherein said ground branch is a dipole ground branch, in the form of an H.
6. The antenna radiating apparatus of claim 1 wherein the number of radiating elements is at least three and includes three of a first radiating element, a second radiating element and a third radiating element; the number of the inverters is at least two, and the inverters comprise a first inverter and a second inverter;
the head end of the first radiating element is formed as the head end of the antenna radiating body, the tail end of the first radiating element is connected with the head end of the second radiating element through the first phase inverter, and the tail end of the second radiating element is connected with the head end of the third radiating element through the second phase inverter;
the first radiation unit comprises three rectangular blocks which are sequentially connected from the head end to the tail end and have widths which are gradually increased;
the second radiation unit comprises a trapezoid block and two rectangular blocks with increasing widths, wherein the trapezoid blocks and the two rectangular blocks are sequentially connected from the head end to the tail end of the second radiation unit;
the third radiating unit comprises a trapezoid block and a rectangular block which are sequentially connected from the head end to the tail end.
7. The antenna radiation device according to claim 6, wherein the number of radiation elements is at least four, and further comprising a fourth radiation element; the number of the inverters is at least three, and the inverter further comprises a third inverter; the head end of the fourth radiating element is connected with the tail end of the third radiating element through the third inverter, and the structure of the fourth radiating element is consistent with that of the third radiating element.
8. The antenna radiation device according to claim 7, wherein the number of radiation elements is five and further comprising a fifth radiation element, the number of inverters is four and further comprising a fourth inverter; the head end of the fifth radiating element is connected with the tail end of the fourth radiating element through the fourth inverter, and the structure of the fifth radiating element is consistent with that of the third radiating element.
9. An antenna comprising an antenna radiation device as claimed in any one of claims 1-8.
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| CN201910825975.0A CN112448153B (en) | 2019-08-30 | 2019-08-30 | Antenna radiation device and antenna |
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| CN109950690A (en) * | 2017-12-21 | 2019-06-28 | 华为技术有限公司 | A kind of antenna and terminal |
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| US20100134375A1 (en) * | 2008-12-03 | 2010-06-03 | Advanced Connection Technology Inc. | Planar antenna |
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| CN104638357A (en) * | 2015-01-30 | 2015-05-20 | 华南理工大学 | Multiband broadband annular monopole plane mobile phone antenna |
| CN106356619A (en) * | 2016-10-14 | 2017-01-25 | 西安电子科技大学 | Wide-band and high-gain WiFi (Wireless Fidelity) omnidirectional antenna |
| CN109950690A (en) * | 2017-12-21 | 2019-06-28 | 华为技术有限公司 | A kind of antenna and terminal |
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