Antenna device and communication device

Abstract

The invention provides an antenna device and a communication device. The antenna device can comprise a feed source structure layer and an antenna structure layer arranged on the feed source structure layer, wherein the feed source structure layer comprises at least one feed source, the at least one feed source is arranged on a target plane, the feed source comprises a hollow tubular conductor, the axis of the conductor is parallel to the target plane, and a gap is formed in the side, close to the antenna structure layer, of the conductor; the antenna structure layer comprises a plurality of antenna units, and orthographic projections of the antenna units on the target plane are overlapped with orthographic projections of the gaps on the target plane; wherein the feed source is used for generating electromagnetic waves, the electromagnetic waves are transmitted in the axial direction of the conductor and are coupled to the antenna unit after being emitted through the gap, and the antenna unit is used for radiating the coupled electromagnetic waves outwards.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to an antenna device and a communication device. Background Art

[0002] Antennas are indispensable devices in communication technology. With the development of antenna technology, array antennas have emerged. Array antennas are generally composed of multiple antenna units. In practice, antennas require feed sources to provide signals. Summary of the invention

[0003] Based on the content of the background technology, the present disclosure proposes an antenna device and a communication device.

[0004] In a first aspect of the present disclosure, an antenna device is provided, comprising: a feed structure layer, and an antenna structure layer arranged on the feed structure layer; wherein:

[0005] The feed structure layer includes at least one feed, and the at least one feed is arranged on the target plane. The feed includes a tubular conductor with a hollow interior, and the axis of the conductor is parallel to the target plane. The conductor is provided with a gap on a side close to the antenna structure layer.

[0006] The antenna structure layer comprises a plurality of antenna units, and the orthographic projections of the antenna units on the target plane overlap with the orthographic projections of the slots on the target plane;

[0007] The feed source is used to generate electromagnetic waves, which are transmitted along the axial direction of the conductor and coupled to the antenna unit after being emitted through the gap. The antenna unit is used to radiate the coupled electromagnetic waves outward.

[0008] Exemplarily, the feed source includes a first end and a second end opposite to each other in the axial direction, the first end is used to input electromagnetic waves; a plurality of the feed sources are arranged in an array, and the feed source structure layer further includes:

[0009] at least one power division structure, the power division structure being coupled to the second end of the first feed source and the first end of at least one second feed source, respectively, wherein the electromagnetic wave emitted from the second end of the first feed source is coupled to the first end of the second feed source via the power division structure;

[0010] The direction of the electromagnetic wave radiated from the slot of the second feed source is the same as the direction of the electromagnetic wave radiated from the slot of the first feed source.

[0011] Exemplarily, the feed structure layer includes a signal input port, and the plurality of power division structures include a first power division structure and at least one second power division structure;

[0012] Wherein, a first end of a first feed source coupled to the first power division structure is connected to the signal input port, and a second end of a second feed source coupled to the first power division structure is coupled to the second power division structure;

[0013] The second power division structure is configured to couple the electromagnetic wave emitted from the second end of the second feed source coupled to the first power division structure to the first end of the second feed source coupled to the second power division structure.

[0014] Exemplarily, a plurality of the second power division structures are included, and among a plurality of third feeds except the first feed coupled to the first power division structure, the second power division structure is arranged between two adjacent third feeds, and the second power division structure is respectively coupled to the second end of a third feed and the first end of another third feed, so as to transmit the electromagnetic waves that are not completely radiated in the previous third feed to the next third feed through the second power division structure.

[0015] Exemplarily, the power division structure includes an equal power division structure and / or an unequal power division structure;

[0016] The first ends of the plurality of second feed sources coupled to the equal power division structure receive electromagnetic waves of the same power, and the first ends of the plurality of second feed sources coupled to the unequal power division structure receive electromagnetic waves of different powers respectively.

[0017] Exemplarily, the slot of the second feed source is different from the slot of the first feed source, and the slot includes a pair of first slot and second slot, wherein the spacing between the first slot and the second slot of the first feed source is different from the spacing between the first slot and the second slot of the second feed source, so that the direction of the electromagnetic wave radiated by the second feed source is the same as the direction of the electromagnetic wave radiated by the first feed source.

[0018] Exemplarily, a cross-sectional shape of the conductor perpendicular to the target plane includes at least one of a rectangle, a circle, an ellipse, a ridge, and a fin.

[0019] Exemplarily, at least one of the gaps is included, and the shape of the gap includes at least one of a circle, an ellipse, a plum blossom, and a strip.

[0020] Exemplarily, a plurality of the slits are included, and the plurality of slit groups are divided into at least one pair of slit groups; wherein the slit group includes two slits arranged at intervals;

[0021] The orthographic projection of one antenna unit on the target plane covers the orthographic projection of one slot group on the target plane, and there is no overlap between the orthographic projections of multiple antenna units on the target plane.

[0022] Exemplarily, a plurality of pairs of the slot groups are arranged periodically, wherein a first distance between two slots in a slot group is smaller than a second distance between the slot groups.

[0023] Exemplarily, the gap includes at least one continuous gap; wherein the continuous gap includes a plurality of third gaps, and the plurality of third gaps are interconnected through a fourth gap; wherein the shape of the third gap is different from the shape of the fourth gap;

[0024] The orthographic projection of one of the continuous gaps on the target plane overlaps with the orthographic projection of at least one antenna unit on the target plane, and there is no overlap between the orthographic projections of multiple antenna units on the target plane.

[0025] Exemplarily, a dimension of the third slot in a radial direction of the conductor is greater than a dimension of the fourth slot in the radial direction; wherein the radial direction is parallel to the target plane and orthogonal to the axial direction.

[0026] Exemplarily, the shape of the third gap includes at least one of a cross shape and a plum blossom shape, and the shape of the fourth gap includes at least one of a bar shape, an arc shape, and a wave shape.

[0027] Exemplarily, it comprises a plurality of the continuous gaps, and the plurality of the continuous gaps are interconnected; or, there are intervals between the plurality of the continuous gaps.

[0028] Exemplarily, a plurality of the feed sources are included, the plurality of the feed sources are arranged along a first direction on the target plane, and the plurality of the slits included in the feed sources are arranged along a second direction; wherein the first direction and the second direction are orthogonal;

[0029] The orthographic projection of one antenna unit on the target plane covers the orthographic projection of one slot or a plurality of adjacent slots on the target plane.

[0030] Exemplarily, it also includes:

[0031] A matching structure layer, located between the feed structure layer and the antenna structure layer;

[0032] The matching structure layer includes a plurality of first metal areas, an orthographic projection of one of the first metal areas on the target plane overlaps with an orthographic projection of one of the gaps on the target plane, and an orthographic projection of the antenna unit on the target plane overlaps with an orthographic projection of the first metal area on the target plane;

[0033] The first metal area is configured to couple the electromagnetic waves radiated from the gap and couple the coupled electromagnetic waves to the antenna unit.

[0034] Exemplarily, the antenna unit includes a phase shift structure and a radiation structure; wherein the phase shift structure includes a receiving element and a transmitting element, the receiving element is used to couple the electromagnetic wave emitted by the first metal area, and the radiation structure includes a radiation patch;

[0035] The orthographic projection of the receiving element on the target plane overlaps with the orthographic projection of the first metal area on the target plane, and the orthographic projection of the transmitting element on the target plane overlaps with the orthographic projection of the radiation patch on the target plane;

[0036] The phase shifter is configured to perform phase modulation on the electromagnetic wave coupled to the receiving element, and the phase-modulated electromagnetic wave is coupled to the radiation patch via the transmitting element.

[0037] Exemplarily, it also includes:

[0038] A first circuit board layer is arranged on a side of the matching structure layer close to the feed structure layer;

[0039] A second circuit board layer is arranged on a side of the matching structure layer away from the feed structure layer;

[0040] Wherein, the metal patterns of the first circuit board layer and the second circuit board layer are axisymmetric.

[0041] Exemplarily, in a column arranged along the column direction, the first end of one of every two adjacent feed sources is arranged on the same side as the second end of the other feed source, so that the two adjacent feed sources are coupled through a power division structure, wherein the fundamental wave is radiated at the gap of one of the two adjacent feed sources, and the -1 harmonic is radiated outwardly at the gap of the other feed source.

[0042] The present disclosure also provides a communication device, the communication device comprising the antenna device

[0043] The antenna device provided by the present disclosure includes a feed structure layer and an antenna structure layer arranged on the feed structure layer; wherein the feed structure layer includes at least one feed source, which is arranged on a target plane, and the feed source includes an internally hollow tubular conductor, the axis of the conductor is parallel to the target plane, and the conductor is provided with a slot on a side close to the antenna structure layer; the antenna structure layer includes a plurality of antenna units, and the orthographic projection of the antenna unit on the target plane overlaps with the orthographic projection of the slot on the target plane; the feed source provided by the antenna device is used to generate electromagnetic waves, which are transmitted along the axis of the conductor and coupled to the antenna unit after being emitted through the slot, and the antenna unit is used to radiate the coupled electromagnetic waves outward.

[0044] Since the feed source used in the feed structure layer is a tubular conductor, and a slit is provided in the tubular conductor, electromagnetic waves can leak out from the slit when transmitted in the axial direction of the feed source, thereby radiating the electromagnetic waves required by the antenna unit. It can be seen that the feed source can transmit energy (electromagnetic waves) on a plane, and the energy transmitted on the plane can reach each antenna unit after leaking out from the slit. Therefore, for multiple antenna units, the structural design for guiding energy transmission in the longitudinal direction (the stacking direction of the feed structure layer and the antenna structure layer) can be reduced, thereby reducing the thickness of the feed structure layer in the longitudinal direction. Therefore, the cross-sectional height of the entire antenna device can be reduced, so that a low-profile array antenna can be constructed, the height of the antenna is reduced, and the integration of the antenna device is improved.

[0045] The above description is only an overview of the technical solution of the present disclosure. In order to more clearly understand the technical means of the present disclosure, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present disclosure more obvious and easy to understand, the specific implementation methods of the present disclosure are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or related technologies, the following is a brief introduction to the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the proportions in the drawings are only for illustration and do not represent the actual proportions.

[0047] Figure 1 A schematic cross-sectional structure diagram of an antenna device in an embodiment of the present disclosure is shown;

[0048] Figure 2 A schematic top view of an antenna device according to an embodiment of the present disclosure is shown;

[0049] Figure 3a A schematic top view of a feed structure layer in an embodiment of the present disclosure is shown;

[0050] Figure 3b A schematic top view of another feed structure layer in an embodiment of the present disclosure is shown;

[0051] Figure 4a A schematic top view of a feed structure layer in an embodiment of the present disclosure is shown;

[0052] Figure 4b A schematic top view of another feed structure layer in an embodiment of the present disclosure is shown;

[0053] Figure 4cA schematic top view of another feed structure layer in an embodiment of the present disclosure is shown.

[0054] Figure 5 A schematic diagram showing the radiation direction and radiation angle of the leaky wave structure in an embodiment of the present disclosure is shown;

[0055] Figure 6 A schematic diagram showing several slot patterns provided on a feed source in an embodiment of the present disclosure is shown;

[0056] Figure 7a A schematic diagram of the cross-section and plan structure of an antenna device in an embodiment of the present disclosure is shown;

[0057] Figure 7b A schematic diagram of the cross-section and plan structure of another antenna device in an embodiment of the present disclosure is shown;

[0058] Figure 7c A schematic diagram of the cross-section and plan structure of another antenna device in an embodiment of the present disclosure is shown;

[0059] Figure 8 A schematic cross-sectional structure diagram of another antenna device in an embodiment of the present disclosure is shown;

[0060] Fig. 9 A schematic cross-sectional structure diagram of another antenna device according to an embodiment of the present disclosure is shown;

[0061] Fig.10 A schematic cross-sectional structure diagram of another antenna device in an embodiment of the present disclosure is shown;

[0062] Fig.11 A three-dimensional perspective view of an antenna device according to an embodiment of the present disclosure is shown;

[0063] Fig.12 A cross-sectional structural diagram of an antenna device according to an embodiment of the present disclosure is shown;

[0064] Fig.13 A schematic diagram showing the transmission of energy in a feed source in an embodiment of the present disclosure is shown.

[0065] Description of reference numerals:

[0066] 100, feed structure layer; 200, antenna structure layer; 300, matching structure layer; 400, first circuit board layer; 500, second circuit board layer; 600, buffer layer; 101, feed; 102, power division structure; 102a, first power division structure; 102b, second power division structure; 101a, first feed; 101b, second feed; 11a, first slot; 11b, second slot; 11c, third slot; 11d, fourth slot; 201, antenna unit; 21, phase shifting structure; 22, radiation structure; 211, receiving element; 212, phase shifter; 213, transmitting element; 221, radiation patch; 222, third circuit board layer; 223, metal layer; 301, first metal area; 302, second metal area. DETAILED DESCRIPTION

[0067] In order to make the above-mentioned purposes, features and advantages of the present disclosure more obvious and understandable, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0068] In related technologies, with the development of antenna technology, phased array antennas are a key component of new satellite communication ground equipment. However, current phased array antennas have the problems of high profile, high loss and narrow bandwidth.

[0069] Among them, the profile refers to the size of the antenna in the height direction. For phased array antennas, low-profile design can improve the integration of phased array antennas. The loss refers to the energy loss of the antenna, that is, the difference between the energy input to the antenna and the energy output of the antenna. Generally, the difference between the two is minimized. When the difference between the two is large, it indicates that the antenna loss is high.

[0070] Among them, in order to solve the above problems, the present disclosure proposes a new phased array antenna architecture, whose main concept is to design the feed source of the phased array antenna, so as to use the new feed structure to help solve at least one of the problems of high profile, high loss and narrow bandwidth of the phased array antenna, so as to realize the design of a broadband, low-loss and low-profile phased array antenna.

[0071] Reference Figure 1 and Figure 2 As shown, Figure 1 shows a schematic cross-sectional structure diagram of the antenna device disclosed in the present invention, Figure 2 A schematic plan view of the antenna device of the present disclosure in a top-down direction is shown. Figure 1 and Figure 2As shown, the antenna device may specifically include a feed structure layer 100, and an antenna structure layer 200 disposed on the feed structure layer 100; wherein,

[0072] The feed structure layer 100 includes at least one feed 101, which is arranged on the target plane. The feed 101 includes a hollow tubular conductor, the axis of the conductor is parallel to the target plane, and a gap 11 is formed on one side of the conductor close to the antenna structure layer.

[0073] The antenna structure layer 200 includes a plurality of antenna units 201, and the orthographic projection of the antenna unit 201 on the target plane overlaps with the orthographic projection of the slot 11 on the target plane;

[0074] Among them, the feed source is used to generate electromagnetic waves, which are transmitted along the axis of the conductor and coupled to the antenna unit after being emitted through the gap. The antenna unit is used to radiate the coupled electromagnetic waves outward.

[0075] In this embodiment, the arrangement of the multiple antenna units may be an array arrangement, such as Figure 2 As shown, the antenna unit array arrangement is shown. When multiple antenna units are arranged in an array, multiple feed sources may be included. A row or a column of antenna units may be fed with electromagnetic waves using one feed source. Figure 2 As shown, a row of antenna units uses one feed source to feed electromagnetic waves; or in some other examples, multiple antenna units can also be arranged in a non-array arrangement. Of course, whether it is an array arrangement or a non-array arrangement, multiple antenna units can be arranged on a plane parallel to the target plane, wherein the antenna unit can be a liquid crystal antenna unit or other types of antenna units.

[0076] Among them, the feed structure layer is mainly used to feed electromagnetic waves to the antenna structure layer, and the antenna structure layer is used to radiate the fed electromagnetic waves outward. When radiating, the phase of the electromagnetic wave can be modulated before radiating, or it can be radiated without modulating the phase.

[0077] In this embodiment, the feed structure layer may include one feed or multiple feeds, wherein the tubular conductor included in the feed is hollow inside and may be made of metal material on the outside, that is, the shell portion of the conductor may be made of metal material, and the metal material may be used to couple the electrical signal input into the feed, thereby generating electromagnetic waves. Generally speaking, the electromagnetic waves transmitted in the feed may be called energy. The conductor is hollow inside, which may enable the feed to have the advantages of wide transmission bandwidth, stable transmission signal, low loss, and high mechanical strength in the high frequency band, thereby solving the problem of high loss and narrow bandwidth of the antenna array in the related art.

[0078] Among them, a slit is opened on the conductor, the number of slits can be multiple or one, the slit is a hollow slit, the extension direction of the slit is parallel to the target plane and close to the antenna structure layer, wherein in the stacking direction of the antenna structure layer and the feed structure layer, there are conductors, slits and antenna structure layers in sequence, specifically, the orthographic projection of the slit on the target plane overlaps with the orthographic projection of the antenna unit on the target plane, specifically, when there are multiple slits, the orthographic projections of different antenna units on the target plane overlap with the orthographic projections of different slits on the target plane; when there is one slit, the orthographic projection of any antenna unit on the target plane overlaps with the orthographic projection of the slit on the target plane. Therefore, when the antenna structure layer covers the feed structure layer, the antenna unit can cover part or all of the slit.

[0079] The energy in the feed source is transmitted along the axial direction of the feed source, and while being transmitted along the axial direction, it is coupled and radiated outward through the gaps opened on the conductor, thereby forming a stable electromagnetic wave around the feed source.

[0080] The shape of the slot set on the feed source can be determined according to the electromagnetic wave to be obtained. By adjusting the shape and size of the slot, the desired type of electromagnetic wave can be obtained. For example, by adjusting the shape of the slot, the polarization type of the radiated electromagnetic wave can be adjusted, wherein the polarization type includes circular polarization, linear polarization and elliptical polarization. When the trajectory of the end of the electric field vector of the electromagnetic wave radiated by the antenna is projected as a circle on a plane perpendicular to the propagation direction, it is called circular polarization. If the projection is an ellipse, it is called elliptical polarization. If the orientation of the electric field vector in space is fixed, the electromagnetic wave is called linear polarization.

[0081] Among them, multiple feed sources are arranged on the target plane, that is, multiple feed sources are laid on the same plane, and the axial direction of the feed source is parallel to the target plane, so that energy can be transmitted in the target plane and coupled outwardly to radiate into the antenna structure layer in a direction perpendicular to or intersecting the target plane. Since the orthographic projection of the antenna unit on the target plane overlaps with the orthographic projection of the slot on the conductor on the target plane, when energy is transmitted on the target plane, it can not only be transmitted on the target plane to the positions of multiple antenna units, but also can be coupled into electromagnetic waves through the slots to the antenna units in a direction perpendicular to or intersecting the target plane, such as Figure 1 As shown by the arrows, when energy is transmitted axially in the feed source, it can be transmitted to the proximal and distal antenna units, and each antenna unit can be coupled to electromagnetic waves through the gap.

[0082] By adopting such a feed structure layer design, the structural design for guiding energy into the antenna structure layer in the longitudinal direction (the stacking direction of the feed structure layer and the antenna structure layer) can be reduced. That is to say, when transferring energy to each antenna unit, the energy can be transmitted in the same plane without the need to build a bridge structure in the longitudinal direction to transfer the energy to the remote antenna unit. For example, in the related art, the energy is transmitted step by step to the remote antenna unit through the longitudinally stacked metal layers. Therefore, through the feed structure layer, the thickness of the antenna device in the longitudinal direction can be reduced, thereby reducing the cross-sectional height of the entire antenna device, so that a low-profile array antenna can be constructed, thereby improving the integration of the antenna device.

[0083] In one example, the cross-sectional shape of the conductor perpendicular to the target plane includes at least one of a rectangle, a circle, an ellipse, a ridge, and a fin.

[0084] In this example, the cross-sectional shapes of the conductors of multiple feed sources perpendicular to the target plane may be consistent or inconsistent. Of course, when they are consistent, the quality of the electromagnetic waves radiated by each feed source in the antenna device tends to be consistent, which can improve the overall performance of the antenna device.

[0085] Among them, the cross-sectional shape of the conductor perpendicular to the target plane can be rectangular, and the tube wall of the conductor can be made of copper, aluminum or other metal materials. Because it is rectangular, it has the advantages of simple structure and high mechanical strength. Specifically, when it is a rectangular conductor, for the cross-section of the rectangular conductor perpendicular to the target plane, the size of the cross-section perpendicular to the target plane can be smaller than its size parallel to the target plane, that is, the height of the aperture of the rectangular conductor can be smaller than the width, thereby achieving a lower cross-sectional height while ensuring the energy transmission performance of the conductor, further improving the integration of the antenna device. For rectangular conductors, they can be used to transmit TE waves or TM waves.

[0086] The cross-sectional shape of the conductor perpendicular to the target plane can be circular, which has the characteristics of low loss and dual polarization, and can be used for transmission over a long distance, thereby being adaptable to antenna devices of larger size, that is, suitable for antenna devices including a large number of antenna units. For a circular conductor, it can be used to transmit TE waves or TM waves.

[0087] Among them, the cross-sectional shape of the conductor perpendicular to the target plane can be an ellipse. Since the cross-section is an ellipse, its transmission waveform is relatively stable, which can improve the stability of the electromagnetic waves fed into the antenna device. It can be used in long-distance microwave transmission scenarios, and its conductor can be made of copper or aluminum. Specifically, for the cross-section of the elliptical conductor perpendicular to the target plane, the long axis of the cross-section is parallel to the target plane, and the short axis can be perpendicular to the target plane, thereby achieving a lower cross-sectional height. For an elliptical conductor, it can be used to transmit TE waves or TM waves.

[0088] The cross-sectional shape of the conductor perpendicular to the target plane can be ridge-shaped, which can be single-ridge or double-ridge-shaped. This conductor can be regarded as a rectangular conductor with a wide wall bent. The electromagnetic field mode is similar to the mode of the above-mentioned rectangular conductor, except that the field distribution is disturbed near the ridge due to the edge effect. When using this type of feed source, it has the characteristics of low main mode cutoff frequency, wide bandwidth and low impedance.

[0089] The cross-sectional shape of the conductor perpendicular to the target plane may be a fin shape, which functions similarly to a ridge conductor.

[0090] In one example, in order to reduce the loss of the antenna device, a power division structure can be set between the feed sources. The power division structure can feed the incompletely radiated energy of one feed source to other feed sources as the input signal of the other feed sources, thereby continuing to feed the incompletely radiated energy into the antenna unit through the other feed sources.

[0091] Accordingly, refer to Figure 3a and Figure 3b As shown, a schematic diagram of a top view of a feed structure layer is shown, such as Figure 3a and Figure 3b As shown, the feed structure layer 100 further includes: at least one power division structure 102; wherein the power division structure 102 is coupled to the second end of the first feed 101a and the first end of at least one second feed 101b respectively, and the electromagnetic wave emitted from the second end of the first feed is coupled to the first end of the second feed via the power division structure;

[0092] The slot of the second feed source is different from the slot of the first feed source, so that the direction of the electromagnetic wave radiated from the slot of the second feed source is the same as the direction of the electromagnetic wave radiated from the slot of the first feed source.

[0093] In this example, each feed source may have a first end and a second end. In the feed source, energy is transmitted from the first end to the second end, and the first end may be referred to as the starting end of the energy transmission, and the second end may be referred to as the ending end of the energy transmission. When the energy in the first feed source is transmitted from the first end to the second end, the energy that is not completely radiated is coupled from the second end to the power division structure, and the energy that is not completely radiated is coupled to the first end of the second feed source via the power division structure. Thus, the first feed source may be understood as the signal source end of the second feed source, and the first end of the second feed source is used to couple the electromagnetic waves that are not completely radiated by the second end of the first feed source, so that the second feed source can radiate the energy that is not completely radiated by the first feed source again, thereby reducing energy loss.

[0094] In one example, the power splitting structure may be located on the same side of the first feed source and the second feed source, such as Figure 3a As shown, when they are located on the same side, the coupling of the power splitter structure with the first feed and the second feed can be facilitated, reducing the difficulty of structural design. In this case, the second end of the first feed and the first end of the second feed can be on the same side. For example, the second end of the first feed and the first end of the second feed are both located on the right side; in this case, of the two adjacent feeds, the first end of one feed is on the left, and the first end of the other feed is on the right.

[0095] Of course, in another example, the first ends of all feeds can be on the same side of the feed, and the second ends of all feeds are also on the same side of the feed, for example, the first ends of all feeds are on the left, and the second ends are on the right, and for another example, in two adjacent feeds, the first ends of the two feeds are on the left, and the second ends of the two feeds are on the right. In this case, the shape design of the power splitter structure can be coupled to the second end of the first feed and the first end of at least one second feed respectively.

[0096] It should be noted that after the second feed source absorbs and re-radiates the electromagnetic waves that are not completely radiated by the first feed source, the radiation direction of the electromagnetic waves radiated from the gap of the second feed source needs to be the same as that of the electromagnetic waves radiated from the gap of the first feed source, thereby allowing the energy that is not completely radiated to be fed toward the antenna structure layer.

[0097] In this example, the first end of the first feed source is used to receive an input signal, which is transmitted in the first feed source along an axial direction, and during the transmission process, leaks out through the gap and radiates electromagnetic waves to the antenna structure layer, wherein when the electromagnetic wave is transmitted in the first feed source along the axial direction, there may be residual energy that is not completely radiated, and the incompletely radiated electromagnetic wave will be coupled from the second end of the first feed source to the power division structure, and at the power division structure, the incompletely radiated electromagnetic wave is used as an input signal, and the power division structure distributes the input signal and transmits it to the first end of each second feed source respectively, and the distributed electromagnetic wave is transmitted in the second feed source along the axial direction again, and during the transmission process, leaks out through the gap on the second feed source and radiates electromagnetic waves to the antenna structure layer, so that the energy that is not completely radiated from the input feed source is absorbed by the second feed source and radiated to the antenna structure layer again, thereby reducing the energy loss during the transmission process.

[0098] In one example, the antenna device may include a power-dividing structure. When a power-dividing structure is included, the second feed source may be all feed sources among the multiple feed sources except the first feed source, that is, the power-dividing structure is coupled to the second end of the first feed source, and to the first ends of all other remaining second feed sources. In this case, the first feed source can be understood as a feed source used by the antenna device to generate electromagnetic waves.

[0099] Exemplarily, the plurality of second feeds may be feeds adjacent to the first feed, such as Figure 3a As shown, it includes three feed sources arranged side by side in the column direction, wherein the first feed source is the feed source in the middle, and a second feed source is arranged on both sides of the first feed source, including a power division structure, which can be arranged on one side of the second end of the first feed source and coupled with the first ends of the two second feed sources respectively, such as Figure 3a As shown by the middle arrow, the electromagnetic wave is transmitted in the axial direction of the first feed source and radiates outward along the gap. The electromagnetic wave that is not completely radiated is coupled to the power division structure at the second end and is input to the first ends of the two second feed sources again through the power division structure, so as to continue to feed the electromagnetic wave that is not completely radiated into the antenna structure layer through the second feed source.

[0100] As another example, the second feed source may include a feed source adjacent to the first feed source and a feed source not adjacent to the first feed source, such as Figure 3b As shown, multiple feed sources are arranged in an array, wherein a power splitting structure is included. The power splitting structure can be arranged on one side of the second end of the first feed source and coupled with the first ends of the four second feed sources respectively, such as Figure 3bAs shown by the middle arrow, the electromagnetic wave is transmitted in the axial direction of the first feed source and radiates outward along the gap. The electromagnetic wave that is not completely radiated is coupled to the power division structure at the second end and is input to the first end of the four second feed sources again through the power division structure. The four second feed sources may include a feed source adjacent to the first feed source or a feed source not adjacent to the first feed source. When the electromagnetic wave that is not completely radiated is transmitted to multiple second feed sources, the electromagnetic waves in some of the second feed sources are transmitted axially from the left side to the right side, and the electromagnetic waves in other second feed sources are transmitted axially from the right side to the left side, so as to continue to feed the electromagnetic wave that is not completely radiated into the antenna structure layer through the second feed source.

[0101] In another example, the antenna device may include multiple power division structures. When multiple power division structures are included, the second end of the second feed source coupled to each power division structure can serve as the signal input end of another power division structure. That is, the second end of the second feed source coupled to one power division structure is coupled to another power division structure to transmit the energy that is not completely radiated by the second feed source to other remaining feed sources through another power division structure. Through multiple power division structures, a multi-layer residual energy recovery mechanism can be formed in the feed structure layer, so that the energy that is not completely radiated by the second feed source can be fully utilized to achieve multi-level utilization of the residual energy.

[0102] By adopting the feed structure layer of this example, the electromagnetic waves that are not completely radiated by the first feed source can be coupled to the second feed source through the power division structure, and leak out through the gaps on the second feed source. Then, the incompletely radiated electromagnetic waves can continue to be coupled to the antenna unit, so that the input energy is fully utilized, reducing the loss of the antenna device, thereby realizing a low-loss design of the antenna device.

[0103] Furthermore, in one example, the antenna device may specify an input feed (a first feed coupled to a first power division structure), which is used to receive energy input to the entire antenna device, and the input energy of the remaining feeds is energy that is not fully radiated by the input feed. Wherein, multiple power division structures may be included, and the multiple power division structures may include a first power division structure and at least one second power division structure; wherein the first power division structure may couple the energy that is not fully radiated by the input feed to a feed adjacent to the input feed (referred to as a primary feed), and the second power division structure may transfer the remaining energy step by step between multiple feeds other than the input feed and the primary feed.

[0104] Reference Figure 4a-4c As shown, a top view schematic diagram of several feed structure layers is shown, such as Figure 4a-4c As shown, the feed structure layer includes a signal input port, and the multiple power division structures include a first power division structure and at least one second power division structure;

[0105] Wherein, a first end of a first feed source coupled to the first power division structure is connected to the signal input port, and a second end of a second feed source coupled to the first power division structure is coupled to the second power division structure;

[0106] The second power division structure is configured to couple the electromagnetic wave emitted from the second end of the second feed source coupled to the first power division structure to the first end of the second feed source coupled to the second power division structure.

[0107] In this embodiment, the first feed source and the second feed source coupled to the first power division structure are adjacently arranged feed sources, wherein the second feed source coupled to the first power division structure may be one or more; for example, Figure 4a As shown, a plurality of feed sources are arranged along the column direction on the target plane, wherein the first power division structure 102a is respectively coupled with the second end of the first feed source 101a and the first ends of the two second feed sources 101b. Specifically, the first feed source 101a coupled with the first power division structure 102a is called an input feed source, and the first end of the first feed source is used to receive an input signal input to the antenna device, that is, the input signal is input to the entire antenna device through the input feed source.

[0108] In this example, in order to simplify the reference to the feed sources, for each power division structure, the feed source coupled to its signal input end is called the first feed source, and the feed source coupled to its signal output end is called the second feed source. Thus, for the second feed source coupled to the first power division structure, it is connected to the signal input end of the second power division structure, and is therefore also called the first feed source in the second power division structure. Among them, for each second feed source coupled to the first power division structure, the first end of the second feed source is coupled to the first power division structure for receiving energy that is not completely radiated by the first feed source, and the second end of the second feed source is coupled to the second power division structure for coupling the energy that is not completely radiated by the second feed source to the remaining feed sources. Specifically, the two feed sources coupled to the second power division structure may be adjacently arranged feed sources, such as the second power division structure being coupled to the second end of one second feed source, and to the first end of another second feed source, respectively.

[0109] like Figure 4a As shown, four feed sources are included, and a first power division structure 102a is arranged between a first feed source 101a and two adjacent second feed sources (101b and 101c); wherein a second end of a second feed source 101c is also coupled to a second power division structure 102b, and the second power division structure 102b is coupled to a first end of a remaining second feed source 101d.

[0110] In this example, the first feed source coupled to the first power division structure is called an input feed source, which is connected to the signal input port and is used to receive a signal input to the antenna device, thereby generating an electromagnetic wave in the input feed source. The electromagnetic wave is transmitted along the axial direction in the input feed source, and during the transmission process, it leaks out through the gap and radiates the electromagnetic wave to the antenna structure layer. When the electromagnetic wave is transmitted along the axial direction in the input feed source, there may be residual energy that is not completely radiated. In this case, the electromagnetic wave that is not completely radiated will be coupled to the first power division structure.

[0111] At the first power division structure, the electromagnetic wave that is not completely radiated is used as an input signal. The first power division structure distributes the input signal and transmits it to the first end of the second feed source arranged adjacent to the input feed source. The distributed electromagnetic wave is then transmitted in the second feed source along the axial direction, and leaks out through the gap on the second feed source during the transmission process and radiates the electromagnetic wave to the antenna structure layer, so that the energy that is not completely radiated by the input feed source is absorbed by the second feed source and radiated to the antenna structure layer again, thereby reducing the energy loss during the transmission process.

[0112] The energy that is not completely radiated in the second feed reaches the second power division structure through the second port of the second feed, and at the second power division structure, the energy that is not completely radiated in the second feed can be coupled into the first end of the remaining second feed (it should be noted that the remaining second feed is a feed that is not coupled to the first power division structure), so that the energy that is not completely radiated in the second feed coupled to the first power division structure can be reused and radiated by other feeds.

[0113] For example, Figure 4a As shown, the energy that is not completely radiated in the input feed source 101a is coupled to the second feed source 101c and the second feed source 101b through the first power division structure 102a. Then, the energy that is not completely radiated in the second feed source 101c is coupled to the second feed source 101d through the second power division structure 102b, so that the energy that is not completely radiated in the input feed source 101a is recycled and utilized step by step by multiple second feed sources, thereby fully improving the energy utilization rate.

[0114] When this embodiment is adopted, the energy that is not completely radiated in the input feed can be reused and radiated through the first power division structure in the feed structure layer, and the energy that is not completely radiated in the second feed can be reused and radiated through the second power division structure, thereby increasing the multiple recovery and utilization of the incompletely radiated energy through the second power division structure, thereby enhancing the energy recovery efficiency and further reducing the loss.

[0115] In one example, if Figure 4bAs shown, multiple second power division structures 102b may be included. Among the multiple third feeds 102e except the first feed coupled to the first power division structure, the second power division structure is arranged between two adjacent third feeds, and the second power division structure is respectively coupled to the second end of one third feed and the first end of another third feed, so as to transmit the electromagnetic waves that are not completely radiated in the previous third feed to the next third feed through the second power division structure.

[0116] In this example, the rest of the feeds except the first feed coupled with the first power division structure are collectively referred to as third feeds, and a second power division structure may be provided between each two adjacent third feeds among the third feeds. That is, there are a plurality of third feeds, and the first end and the second end of the third feeds may be coupled with a second power division structure, respectively. Figure 4b As shown, 6 feed sources are arranged in an array on a target plane. Among the 5 third feed sources except the first feed source coupled to the first power division structure, both ends of four third feed sources are coupled with a second power division structure. In this way, each of two adjacent third feed sources has a second power division structure, and 4 second power division structures are included. An energy transmission chain is formed among the multiple third feed sources of the 4 second power division structures, and the energy that is not completely radiated from the previous third feed source can be transmitted to the next third feed source.

[0117] like Figure 4c As shown, five feed sources are included, and the five feed sources are arranged along the direction of columns on the target plane. Among the four third feed sources 101e except the first feed source 101a coupled with the first power division structure 102a, there is a third feed source whose two ends are coupled with a second power division structure. In this way, two adjacent feed sources each have a second power division structure, and then two second power division structures are included. An energy transmission chain is formed among the multiple third feed sources of the two second power division structures, and the energy that is not completely radiated from the previous third feed source can be transmitted to the next third feed source.

[0118] Among them, the third feed source is only different in name. In practice, for each second power division structure, when the second end of a third feed source is coupled to it, the third feed source can be regarded as the first feed source described in the above example, and its incompletely radiated energy will be coupled to the second power division structure; when the first end of a third feed source is coupled to it, the third feed source can be regarded as the second feed source described in the above example, which receives the energy that is not completely radiated by the previous feed source.

[0119] When this example is used, when the number of feed sources is large, a step-by-step transmission path for the residual energy can be formed through multiple second power division structures, so as to achieve step-by-step recovery of the energy that is not completely radiated by the input feed source, so that the energy that is not completely radiated by the input feed source can be recovered and radiated as much as possible, thereby reducing losses.

[0120] In one example, the power division structure includes an equal power division structure and / or an unequal power division structure; wherein the first ends of multiple second feed sources coupled to the equal power division structure receive electromagnetic waves of the same power, and the first ends of multiple second feed sources coupled to the unequal power division structure respectively receive electromagnetic waves of different powers.

[0121] Specifically, when there is one power division structure, it can be an equal power division structure or an unequal power division structure; when there are multiple power division structures, they can all be equal power division structures, or all can be unequal power division structures; or, some power division structures are equal power division structures, and other some power division structures are unequal power division structures.

[0122] Among them, for the equal power division structure, it can feed the energy that is not completely radiated by the first feed source equally into multiple second feed sources. Specifically, when the power division structure is coupled with multiple second feed sources, its power division structure can be an equal power division structure, for example, the first power division structure can be an equal power division structure, so as to evenly distribute the energy that is not completely radiated by the first feed source to multiple second feed sources; when the power division structure is coupled with a second feed source, its power division structure can be an unequal power division structure, for example, the second power division structure can be an unequal power division structure, so as to feed all the energy that is not completely radiated by the first feed source into the second feed source.

[0123] As described above, the electromagnetic waves radiated from the gap of the second feed source need to have the same radiation direction as the electromagnetic waves radiated from the gap of the first feed source. In one example, if the second end of the first feed source and the first end of the second feed source can be on the same side of the feed source, in this case, the energy transmission path can refer to Figure 3a As shown, the first end of the first feed source 101a is on the left side and the second end is on the right side. The electromagnetic wave is transmitted from the left side to the right side of the first feed source. During the transmission process, the radiation direction of the electromagnetic wave radiated from the gap forms an angle θ with the normal direction of the target plane ( Figure 1 As shown in , the first end of the second feed is on the right and the second end is on the left. The electromagnetic wave recovered from the first feed is transmitted from the right to the left in the second feed, that is, the axial transmission direction of the energy in the first feed is exactly opposite to the axial transmission direction of the energy in the second feed. In this case, it is necessary to ensure that the radiation direction of the electromagnetic wave radiated from the gap of the second feed also forms an angle θ with the normal direction of the target plane.

[0124] Specifically, the slits of the first feed source and the second feed source can be set to achieve the same radiation direction of electromagnetic waves radiated by the two. In one example, the direction of the electromagnetic waves radiated outward from the feed source can be adjusted by adjusting the distance between the slits.

[0125] The slot of the second feed source may be different from the slot of the first feed source, and the slot includes a pair of first slot and second slot, wherein the spacing between the first slot and the second slot of the first feed source is different from the spacing between the first slot and the second slot of the second feed source, so that the direction of the electromagnetic wave radiated by the second feed source is the same as the direction of the electromagnetic wave radiated by the first feed source.

[0126] In this example, when adjusting the spacing between the first slot and the second slot, the determination process between the radiation direction and the spacing of the wave in the related art can be referred to, for example, referring to the determination method of the leaky waveguide, referring to Figure 5 As shown, a schematic diagram of the radiation direction and radiation angle of the leaky wave structure is shown, such as Figure 5 As shown, the radiation direction and radiation angle of the leaky wave structure satisfy the following formula (1):

[0127]

[0128] Wherein, in formula (1), λ is the wavelength and p represents the spacing between the slot pairs.

[0129] From formula (1), the relationship between the radiation angle θ of the leaky waveguide can be deduced, which can satisfy the following formula (2):

[0130]

[0131] In formula (2), k is a constant and λ is the wavelength.

[0132] Through the above formulas (1) and (2), the size of the slot can be designed based on the required radiation direction so that the angle between the electromagnetic wave radiated from the slot of the first feed source and the normal to the target plane is consistent with the angle between the electromagnetic wave radiated from the slot of the second feed source and the normal to the target plane.

[0133] Exemplarily, in one example, in a column arranged along the column direction, the first end of one of every two adjacent feed sources is arranged on the same side as the second end of the other feed source, so that the two adjacent feed sources are coupled through a power division structure, wherein the fundamental wave is radiated at the gap of one of the two adjacent feed sources, and the -1 harmonic is radiated outwardly at the gap of the other feed source.

[0134] The target direction may be a column direction, that is, a plurality of feed sources are arranged in a plurality of columns, and in the plurality of feed sources in each column, a first end of one feed source of every two adjacent feed sources is arranged on the same side as a second end of another feed source, that is, a first end of one feed source is located on the left, and a first end of the other feed source is located on the right; and every two adjacent feed sources may be coupled by a power splitting structure, such as Figure 4a and Figure 4c As shown, adjacent feed sources 101a and feed sources 101e are coupled through a power division structure, the second end of feed source 101a and the first end of feed source 101e are coupled to the power division structure 102a, and the second end of feed source 101e and the first end of feed source 102b are coupled to the power division structure 102b, thereby, the energy transmission directions in each two adjacent feed sources are opposite, thereby, the electromagnetic waves radiated from the gap by the two can be different, so that the directions of the electromagnetic waves radiated from the gap by the two are the same.

[0135] Among them, the gap of one of the two adjacent feed sources radiates the fundamental wave, and the gap of the other feed source radiates the -1 harmonic outward.

[0136] The shape of the gap on the conductor is described below.

[0137] Among them, the slot of the feed source is used to radiate the electromagnetic waves transmitted in the axial direction outward, and the shape, size and size of the slot affect the polarization type, beam and bandwidth of the electromagnetic waves radiated outward.

[0138] In one example, each feed source may include at least one slit, and the shape of the slit may be at least one of a circular shape, an elliptical shape, a plum blossom shape, and a long strip shape.

[0139] Reference Figure 6 As shown, several slot patterns are shown, among which diamond-shaped slots and circular slots can realize circularly polarized waves, that is, circularly polarized electromagnetic waves can be fed into the antenna structure layer, among which long strip slots can realize linearly polarized waves, elliptical slots can realize elliptical polarized waves, and plum blossom-shaped slots can realize circularly polarized waves.

[0140] Among them, the same feed source may include slots of one shape or slots of multiple shapes. When slots of one shape are included, electromagnetic waves of the same polarization type can be emitted outward through the feed source. When slots of multiple shapes are included, the emitted electromagnetic waves can be beamformed through the combination of the slots to obtain electromagnetic waves of the desired type; or, the combination of the slots can realize a combination of electromagnetic waves of different polarization types.

[0141] Among them, since multiple antenna units are included and the orthographic projection of each antenna unit on the target plane is required to overlap with the orthographic projection of the slot on the target plane so that the electromagnetic waves radiated from the slot can be coupled to the antenna unit, when one slot is included, the slot can extend continuously in the axial direction of the conductor so that one slot can be covered by multiple antenna units; when this setting is adopted, since the slot is continuous and can overlap with each antenna unit, the arrangement of the antenna units can be more flexible, because no matter how they are arranged, they can overlap with the slots.

[0142] Wherein, when multiple slots are included, the number of slots can be the same as the number of antenna units, so that each antenna unit corresponds to a slot, and the orthographic projections of different antenna units on the target plane can overlap with the orthographic projections of different slots on the target plane. When this setting is adopted, since the antenna unit overlaps with a slot, such as one antenna unit can cover one slot, a combination of electromagnetic waves of multiple polarization types can be achieved.

[0143] Alternatively, when multiple slots are included, the number of slots can be n times the number of antenna units, whereby n adjacent slots correspond to one antenna unit, and the orthographic projection of the antenna unit on the target plane can cover the orthographic projections of n adjacent slots on the target plane, and has no overlap with the orthographic projections of other slots on the target plane, whereby each antenna unit can receive electromagnetic waves radiated by the n slots; when this setting is adopted, the radiation direction of the electromagnetic waves radiated from the slots can be adjusted by setting the spacing between the n slots in different feed sources.

[0144] Reference Figure 7a and Figure 7b As shown, a cross-sectional and planar structural schematic diagram of an antenna device is shown, such as Figure 7a and Figure 7b As shown, each feed source may include a plurality of slots, and the plurality of slots are periodically arranged along the axial direction of the conductor. Specifically, the plurality of slots may form at least one pair of slot groups; wherein the slot group includes two slots spaced apart.

[0145] In this embodiment, different antenna units may cover different slot groups, and the shapes of the multiple slots may be the same shape, which are periodically arranged in the axial direction of the conductor, and two adjacent slots are used as a pair of slot groups, that is, the multiple slots are divided into multiple pairs of slot groups, each slot group includes two slots, wherein the shapes and sizes of the two slots may be the same, for example, Figure 7a As shown, they are all in the shape of long strips, and their sizes are also the same, and the size may refer to: the size in the axial direction and the size in the radial direction of the conductor.

[0146] In some other examples, the shapes and / or sizes of two gaps in a gap group may be different, for example, one of the two gaps in the gap group is an elongated strip, and the other gap is a diamond; or, the two gaps in the gap group have the same shape but different sizes, such as both gaps are elongated strips, one of which is larger in size and the other is smaller in size. Specifically, for example, one of the gaps has a larger size in the radial direction and the other gap has a smaller size in the radial direction, or one of the gaps has a larger size in the axial direction and the other gap has a smaller size in the axial direction.

[0147] Wherein, in the case where the shapes and / or sizes of the two slots in the slot group can be different, the plurality of slots include two slots, such as slot 11a and slot 11b, wherein the two slots can be periodically staggered along the axial direction of the conductor, so that each slot group includes slot 11a and slot 11b, such as Figure 7b As shown, the upper image is a schematic diagram of the top view of the feed source, and the lower image is a schematic diagram of the cross-sectional structure of the antenna device in the BB direction of the feed source. Multiple slots are distributed on the conductor, and the multiple slots are formed by slots 11a and slots 11b being periodically staggered along the axial direction of the conductor. Thus, one of each two adjacent slots is slot 11ba, and the other is slot 11b. Slots 11a and slots 11b are combined into a slot group. When this setting is adopted, the slots on the conductor are periodically staggered in different shapes. Thus, the adjustment of the radiation direction, bandwidth and beam of the electromagnetic wave can be achieved through the slot group composed of slots of different shapes.

[0148] Among them, Figure 7a As shown, further, multiple pairs of the slot groups are arranged periodically, wherein the first distance d1 between the two slots in the slot group is less than the second distance d2 between the slot groups. In this example, multiple slot groups are arranged periodically, so that the intervals between the slot groups are uniform, wherein the distance between two adjacent slot groups is the second distance, which can be the vertical distance between the two slot groups in the axial direction, and the distance between the two slots in the slot group is the first distance, and similarly, the first distance can be the vertical distance between the two slots in the axial direction, wherein the first distance can be less than the second distance. When this setting is adopted, different antenna units can cover different slot groups, and when the spacing between the slot groups is greater than the spacing between the two slots in the slot group, sufficient space can be left between the antenna units to ensure the spacing between the antenna units, thereby facilitating the arrangement of the antenna units and avoiding signal crosstalk between the antenna units.

[0149] As described above, a slot can be provided on the feed source, and the slot can extend continuously in the axial direction of the conductor, and the orthographic projections of the plurality of antenna units on the target plane can overlap with the orthographic projections of the slot on the target plane. Further, in one example, such a slot can be a composite slot, that is, a continuous slot composed of slots of two different shapes, specifically, the slot includes at least one continuous slot; wherein the continuous slot includes a plurality of third slots 11c, and the plurality of third slots 11c are interconnected through a fourth slot 11d; wherein the shape of the third slot is different from the shape of the fourth slot.

[0150] In this embodiment, the orthographic projection of each continuous gap on the target plane may overlap with the orthographic projection of at least one antenna unit on the target plane, and there is no overlap between the orthographic projections of multiple antenna units on the target plane.

[0151] A continuous slot may be provided on the conductor. When a continuous slot is provided, the orthographic projection of the continuous slot on the target plane may overlap with the orthographic projections of the plurality of antenna units on the target plane.

[0152] Alternatively, m1 continuous slots may be provided on the conductor. When multiple continuous slots are provided, the orthographic projection of one continuous slot on the target plane may overlap with the orthographic projections of m2 antenna units on the target plane, wherein m2 may be greater than m1. For example, if 20 antenna units are provided and two continuous slots are provided, the orthographic projection of one continuous slot on the target plane may overlap with the orthographic projections of 10 antenna units on the target plane.

[0153] In this embodiment, the shape of the third slot needs to be different from the shape of the fourth slot, so that a continuous slot can be a composite slot composed of two slots of different shapes, and near-field beamforming can be achieved through the radiation slot. Figure 7c As shown, a top view of another gap is shown, such as Figure 7c As shown in the figure, the continuous gap is formed by connecting the cross-shaped gap and the long strip gap, which can be realized by adjusting the size and position of the composite gap. Figure 7c The beamforming shown in .

[0154] For each continuous gap, the continuous gap may include two or more third gaps, and a fourth gap is arranged between every two adjacent third gaps.

[0155] In a further example of this example, a dimension of the third slot in a radial direction of the conductor is greater than a dimension of the fourth slot in the radial direction; wherein the radial direction is parallel to the target plane and orthogonal to the axial direction.

[0156] In this example, the third slot and the fourth slot have different shapes. When the shapes are different, the size of the third slot in the radial direction of the conductor can be larger than the size of the fourth slot in the radial direction; that is, the size of the third slot in the radial direction is larger, which can be beneficial to beamforming. Furthermore, in an example, the shape of the third slot includes at least one of a cross and a plum blossom, and the shape of the fourth slot includes at least one of a strip, an arc, and a wave.

[0157] like Figure 7c As shown, the third slot 11c is in a cross shape and the fourth slot 11d is in a strip shape. In this case, due to the existence of the third slot, the feed source can feed circularly polarized electromagnetic waves into the antenna structure layer, and through the connection of the fourth slot, the circularly polarized electromagnetic waves can be beamformed. Figure 7c As shown in the image below, the orthographic projection of a continuous gap on the target plane can overlap with the orthographic projections of multiple antenna units on the target plane, wherein the orthographic projection of the continuous gap on the target plane can fully cover some antenna units and overlap with other antenna units (such as Figure 7c The orthographic projections of the antenna units at both ends of the image on the target plane overlap.

[0158] Furthermore, in one example, a plurality of the continuous gaps are included, and the plurality of the continuous gaps are interconnected; or, there are intervals between the plurality of the continuous gaps.

[0159] In this example, multiple continuous gaps may be connected or have gaps between them. In the case of gaps, the spacing between each two adjacent continuous gaps may be consistent. When there are gaps between multiple continuous gaps, the shape of the third gap in different continuous gaps may be different, or the shape of the fourth gap may be different, or the shape of the third gap and the fourth gap may be different. For example, for continuous gap C and continuous gap D, the shape of the third gap in continuous gap C may be different from the shape of the third gap in continuous gap D, or the shape of the fourth gap in continuous gap C may be different from the shape of the fourth gap in continuous gap D, or the shape of the fourth gap and the third gap in continuous gap C may be different from the shape of the fourth gap and the third gap in continuous gap D.

[0160] Of course, if the shapes of the third slots of different continuous slots are the same, and the fourth slots are the same, the consistency of the electromagnetic waves radiated by each continuous slot on the feed source can be guaranteed, and the overall performance of the antenna device can be improved. If the shapes of the third slots and / or fourth slots of different continuous slots are different, multiple electromagnetic waves can be formed in the antenna device, and the multiple electromagnetic waves can be combined.

[0161] In this example, when continuous slots are used, the arrangement of multiple antenna units is more flexible, compared with multiple periodically arranged slots. Figure 7a For the gap shown, the antenna unit is strictly required to be arranged above the gap and cover the gap. If it is a continuous gap, a continuous gap area will be provided for the arrangement of the antenna unit. Within the gap area, any antenna unit overlaps with the continuous gap. Therefore, when arranging the antenna units, there is no need to consider the spacing between the gaps, thereby enhancing the flexibility of the arrangement of the antenna units.

[0162] Furthermore, in one example, when each feed source includes multiple slits, or includes at least one continuous slit, multiple feed sources can be arranged along a first direction on a target plane, and the multiple slits included in the feed sources are arranged along a second direction; wherein the first direction and the second direction are orthogonal.

[0163] In this example, the first direction may be the column direction, and the second direction may be the row direction. In this case, multiple feed sources are arranged in a row, and their axial direction is along the row direction. The feed sources include multiple slots, and the multiple slots may be arranged periodically along the row direction, or may not be arranged periodically. Among them, the positive projection of an antenna unit on the target plane may cover the positive projection of a slot or multiple adjacent slots on the target plane. When this setting is adopted, the setting of the power division structure can be facilitated. Specifically, between each two adjacent feed sources, the first ends of the two feed sources are located on different sides, such as the first end of one feed source is located on the left side, and the first end of the other feed source is located on the right side. Thus, the power division structure can be arranged at both ends of the feed source, that is, there is no need to arrange the power division structure between the gaps of the feed sources. In this way, the crosstalk between the signals caused by arranging the power division structure between the gaps of the feed sources can be avoided, and the performance of the antenna device can be improved. At the same time, since the power division structure is arranged on both sides of the feed source, there is no need to occupy the space between the feed sources, so that the structure of the antenna device can be made more compact, which is conducive to improving the integration of the antenna device.

[0164] The overall structure of the antenna device of the present disclosure is exemplarily described below.

[0165] In one example, a matching structure layer may be further provided between the feed structure layer and the antenna structure layer, and the matching structure layer may be used to couple the electromagnetic waves radiated from the gap of the feed structure layer to the antenna units in the antenna structure layer.

[0166] Accordingly, refer to Figure 8 As shown, a schematic cross-sectional structure diagram of an antenna device is shown, such as Figure 8As shown, the matching structure layer is located between the feed structure layer and the antenna structure layer; wherein the matching structure layer includes multiple first metal areas, the orthographic projection of a first metal area on the target plane overlaps with the orthographic projection of a slot on the target plane, and the orthographic projection of the antenna unit on the target plane overlaps with the orthographic projection of the first metal area on the target plane; wherein the first metal area is configured to couple the electromagnetic waves radiated from the slot, and couple the coupled electromagnetic waves to the antenna unit.

[0167] In this embodiment, the overlap between the orthographic projection of the first metal area on the target plane and the orthographic projection of a gap on the target plane may mean that: the orthographic projection of the first metal area on the target plane covers the orthographic projection of the gap on the target plane, or the orthographic projection of the first metal area on the target plane covers a part of the orthographic projection of the gap on the target plane. Wherein, when the gap includes at least one continuous gap, and the orthographic projection of a continuous gap on the target plane can overlap with the orthographic projections of multiple antenna units on the target plane, the orthographic projection of the first metal area on the target plane is located within the orthographic projection of the gap on the target plane and is covered by the orthographic projection of the gap on the target plane, thereby, when arranging multiple antenna units, they can be arranged flexibly without being limited by the gap. Wherein, the gap may also include multiple gap groups, and when each gap group includes two gaps, the orthographic projection of the first metal area on the target plane can cover the orthographic projection of a gap group on the target plane.

[0168] Among them, the overlap between the orthographic projection of the first metal area on the target plane and the orthographic projection of an antenna unit on the target plane can refer to: part of the orthographic projection of the first metal area on the target plane overlaps part of the orthographic projection of the antenna unit on the target plane, including that the orthographic projection of the antenna unit on the target plane fully covers the orthographic projection of the first metal area on the target plane, and that the orthographic projection of the antenna unit on the target plane partially covers the orthographic projection of the first metal area on the target plane.

[0169] The first metal area is made of metal material, which can be copper material or aluminum material. There are intervals between the multiple first metal areas to avoid signal crosstalk between adjacent antenna units, and the intervals can be hollow gaps, or the intervals can be formed by materials that isolate electrical signal crosstalk.

[0170] In which, while energy is transmitted along the axial direction in the feed source, it can be radiated outward from the gap as an electromagnetic wave. The radiated electromagnetic wave is coupled to the first metal area. Since part or all of the first metal area is covered by the antenna unit, the first metal area is coupled to the electromagnetic wave and transmitted upward to the antenna unit, so that the antenna unit can receive the electromagnetic wave and then radiate outward.

[0171] In a further example, the matching structure layer can be set as a low-loss structure to reduce the energy loss radiated from the feed structure layer to the antenna structure layer, that is, the electromagnetic waves radiated from the feed structure layer can be coupled to the antenna structure layer as much as possible through the low-loss matching structure layer. Specifically, symmetrical circuit board layers can be set on both sides of the matching structure layer.

[0172] Reference Fig. 9 As shown, a cross-sectional structural diagram of another antenna device is shown, such as Fig. 9 As shown, the first circuit board layer 400 is arranged on the side of the matching structure layer close to the feed structure layer; the second circuit board layer 500 is arranged on the side of the matching structure layer away from the feed structure layer; wherein the metal patterns of the first circuit board layer and the second circuit board layer are axially symmetrical.

[0173] In this embodiment, the first circuit board layer and the second circuit board layer can be referred to as PCB boards (Printed circuit boards, printed circuit boards), and the first circuit board layer and the second circuit board layer are used to provide electrical connections between electronic components between the feed structure layer and the antenna structure layer. The first circuit board layer can be used to couple electromagnetic waves radiated outward from the gap to the first metal area, and the second circuit board layer can be used to couple electromagnetic waves transmitted from the first metal area to the antenna unit in the antenna structure layer.

[0174] Metal pattern layers are provided on both the first circuit board layer and the second circuit board layer, and the metal pattern layers are used to provide electrical connection for electronic components, wherein the metal pattern layer of the first circuit board layer and the metal pattern layer of the second circuit board layer can be axially symmetrical, that is, the two are symmetrical figures. Since they are symmetrical figures, signal loss of electromagnetic waves on the path of the first circuit board layer, the first metal area and the second circuit board layer can be avoided, thereby reducing the loss of the antenna device.

[0175] In one example, the antenna device may be a structure in which a feed structure layer feeds power to an antenna unit through a liquid crystal phase shifter. Specifically, the antenna structure layer may include a structure for phase modulating electromagnetic waves.

[0176] Reference Fig.10 As shown, a cross-sectional structural diagram of another antenna device is shown, such as Fig.10 As shown, it includes a feed structure layer and an antenna structure layer located on the feed structure layer, wherein the antenna structure layer includes a plurality of antenna units arranged in an array, wherein each antenna unit 200 may include a phase shift structure 201 and a radiation structure 202; wherein the phase shift structure 201 includes a receiving element 211, a phase shifter 212 and a transmitting element 213, wherein the receiving element 211 is used to couple the electromagnetic wave emitted by the first metal area 301, and the radiation structure 202 includes a radiation patch 221;

[0177] The orthographic projection of the receiving element 211 on the target plane overlaps with the orthographic projection of the first metal area 301 on the target plane, and the orthographic projection of the transmitting element on the target plane overlaps with the orthographic projection of the metal patch on the target plane;

[0178] The phase shifter 212 is configured to perform phase modulation on the electromagnetic wave coupled to the receiving element 211 , and the phase-modulated electromagnetic wave is coupled to the metal patch 221 via the transmitting element 213 .

[0179] In this example, the radiating structure of each antenna unit is located above the phase-shifting structure, that is, the radiating structure is located on the side of the phase-shifting structure away from the feed structure layer, wherein each phase-shifting structure may include a receiving element and a transmitting element, and the receiving element and the transmitting element may be located on opposite sides of the phase-shifting structure, such as the receiving element may be located on the side of the phase-shifting structure close to the first metal area, and the transmitting element may be located on the side of the phase-shifting structure away from the first metal area.

[0180] The overlapping of the orthographic projection of the receiving element on the target plane and the orthographic projection of the first metal area on the target plane may include: the orthographic projection of the receiving element on the target plane covers the orthographic projection of the first metal area on the target plane, and the orthographic projection of the receiving element on the target plane partially overlaps with the orthographic projection of the first metal area on the target plane.

[0181] In one example, the phase shift structure may be a liquid crystal phase shifter, which includes an upper glass sheet and a lower glass sheet arranged opposite to each other, the upper glass sheet and the lower glass sheet constitute a liquid crystal box, a conductive pattern layer is arranged on the upper glass sheet and the lower glass sheet, the conductive pattern layer of the upper glass sheet is close to the lower glass sheet, the conductive pattern layer of the lower glass sheet is close to the upper glass sheet, the area between the upper glass sheet and the lower glass sheet is filled with liquid crystal, and the conductive pattern layer is used to provide an electric field for the liquid crystal to cause the liquid crystal to deflect, thereby adjusting the phase of the electromagnetic wave radiated in. In this example, the receiving element is located on one side of the lower glass sheet, specifically on the side of the lower glass sheet close to the first metal area, which is used to transmit the electromagnetic wave transmitted by the first metal area to the liquid crystal box; after the phase shift of the liquid crystal in the liquid crystal box, it is emitted to the transmitting element.

[0182] The transmitting element may be located on one side of the lower glass sheet, specifically on the side of the lower glass sheet close to the radiation patch, for transmitting the phase-modulated electromagnetic waves to the transmitting element.

[0183] Among them, the orthographic projection of the emitting element on the target plane overlaps with the orthographic projection of the radiation patch on the target plane, which may include: the orthographic projection of the emitting element on the target plane is covered by the orthographic projection of the radiation patch on the target plane, and the orthographic projection of the emitting element on the target plane partially overlaps with the orthographic projection of the radiation patch on the target plane; the emitting element is used to emit the coupled electromagnetic waves to the radiation patch, and radiate outward through the radiation patch.

[0184] In some examples, the shape of the radiating element may include at least one of a closed circular shape and an open circular shape.

[0185] In some examples, such as Fig.10 As shown, a buffer layer 600 may be further provided between the matching structure layer 300 and the feed structure layer 100. The material of the buffer layer may be selected as foam, which is used to play a supporting role between the matching structure layer and the feed structure layer. In this example, the buffer layer may be provided on the entire surface. Specifically, the buffer layer 600 may be located on one side of the first circuit board layer 400 close to the feed structure layer 100.

[0186] like Fig.10 As shown, the radiating structure may include:

[0187] A metal layer is arranged close to the emitting element, a second metal region 302 is arranged in the metal layer 223, and an orthographic projection of the second metal region on the target plane overlaps with an orthographic projection of the emitting element on the target plane;

[0188] The third circuit board layer 222 is located between the metal layer and the radiation patch;

[0189] The orthographic projection of the metal patch on the target plane overlaps with the orthographic projection of the second metal area on the target plane.

[0190] In this example, the radiation structure can be arranged on the liquid crystal box, which is stacked with a metal layer 223, a third circuit board layer 222 and a radiation patch 221 in sequence, the third circuit board layer can provide electrical connection between the elements in the antenna device on the liquid crystal box, and multiple second metal areas are arranged in the metal layer, and one second metal area can correspond to one emitting element, that is, one antenna unit, wherein the orthographic projection of the second metal area on the target plane overlaps with the orthographic projection of the emitting element on the target plane, which can include: the orthographic projection of the metal area on the target plane covers the orthographic projection of the emitting element on the target plane and overlaps, and the orthographic projection of the metal area on the target plane partially overlaps with the orthographic projection of the emitting element on the target plane.

[0191] Among them, the metal layer plays a role in coupling electromagnetic waves between the liquid crystal box and the radiation patch, that is, it can effectively couple the electromagnetic waves to the radiation patch. Among them, the material of the second metal area can be a metal material such as copper or aluminum, which can be the same as or different from the material of the first metal area.

[0192] An antenna device in a specific example is given below. The antenna device is a liquid crystal phased array antenna.

[0193] like Fig.11 and Fig.12 As shown, Fig.11 A three-dimensional perspective view of an antenna device in an example is given. Fig.12 A schematic diagram of the cross-sectional structure of an antenna device in an example is given, such as Fig.11 and Fig.12 As shown, it includes a feed structure layer, a matching structure layer and an antenna structure layer, the matching structure layer is arranged on the feed structure layer, and the antenna structure layer is arranged on the matching structure layer; wherein:

[0194] The feed structure layer includes three feeds, which have the same shape and include a rectangular conductor with a hollow interior. The three feeds are arranged in a row along the column direction (first direction), and the axis of the feed extends along the row direction (second direction). A plurality of slots periodically arranged along the row direction are provided on one side of the rectangular conductor close to the antenna structure layer. These slots constitute a plurality of slot pairs, and each slot pair includes two slots, namely slot 11a and slot 11b, wherein the distance between slot 11a and slot 11b is smaller than the distance between the slot pairs; the distance between slot 11a and slot 11b is used to adjust the direction of the electromagnetic wave radiated from the slot by the feed;

[0195] The feed structure layer also includes a power splitting structure, the feed in the middle is the first feed, the two sides of the first feed are the second feeds, and the power splitting structure is coupled to the second end of the first feed and the first ends of the two second feeds respectively, and is used to couple the electromagnetic waves that are not completely radiated by the first feed to the two second feeds; wherein, referring to Fig.13 As shown, Fig.13 A schematic diagram showing the transmission of energy in the feed source is shown in FIG. Fig.13As shown, the first feed source receives the signal input into the antenna device, and generates an electromagnetic wave based on the signal. The electromagnetic wave is transmitted from the left side to the right side in the axial direction of the first feed source, and leaks through the gap on the first feed source to form an electromagnetic wave radiated to the antenna structure layer. After reaching the second end, the electromagnetic wave that is not completely radiated is coupled to the power division structure, and then evenly coupled into the first ends of the two second feed sources through the power division structure. The electromagnetic wave coupled to the second feed source is transmitted from the right side to the left side in the second feed source along the axial direction. During the transmission process, it leaks through the gap on the second feed source to form an electromagnetic wave radiated to the antenna structure layer; the residual power at the end of the feed source is transmitted to the adjacent feed source through the power division structure to be radiated again, thereby improving energy utilization;

[0196] In the feed structure layer, the spacing between the two slots in each slot pair of the first feed is different from the spacing between the two slots in each slot pair of the second feed, and the slots of the first feed and the second feed are designed respectively so that the electromagnetic waves radiated from the slots of the first feed and the electromagnetic waves radiated from the slots of the second feed have the same direction; in this example, the electromagnetic waves in the three feeds are all transmitted in the form of TE10 mode, the first feed radiates the fundamental wave outward, and the second feed radiates the -1th harmonic outward; or, the first feed radiates the -1th harmonic outward, and the second feed radiates the fundamental wave outward;

[0197] The buffer layer is arranged on one side of the feed structure layer and is made of foam;

[0198] A first circuit board layer is arranged on a side of the buffer layer away from the feed structure layer, and is used to couple the electromagnetic wave radiated from the gap in the feed structure layer to the first metal area in the matching structure layer above;

[0199] The matching structure layer is arranged on the side of the first circuit board layer away from the feed structure layer, and includes a plurality of first metal areas, and the orthographic projections of the first metal areas on the target plane overlap with the orthographic projections of the gaps on the target plane;

[0200] The second circuit board layer is arranged on a side of the matching structure layer away from the feed structure layer, wherein the patterns on the first circuit board layer and the second circuit board layer are axially symmetrical. In the case of axial symmetry, all electromagnetic waves radiated from the feed structure layer can be coupled to the antenna structure layer as much as possible;

[0201] Among them, the antenna structure layer includes:

[0202] A liquid crystal box is located on a side of the second circuit board layer away from the feed structure layer, and has liquid crystal arranged inside;

[0203] A plurality of receiving elements are arranged on a side of the liquid crystal box close to the second circuit board layer, an orthographic projection of one receiving element on the target plane overlaps with an orthographic projection of a first metal area on the target plane, and there is no overlap between the plurality of receiving elements;

[0204] A plurality of transmitting elements are arranged on a side of the liquid crystal box away from the second circuit board layer; wherein the receiving element is used to couple the electromagnetic waves radiated from the first metal area, and after being phase modulated by the liquid crystal in the liquid crystal box, the electromagnetic waves are radiated by the transmitting element;

[0205] The metal layer is located on a side of the liquid crystal box away from the feed structure layer and is arranged close to the emitting element, and includes a plurality of second metal areas, wherein the second metal areas have upper metal patches, and the orthographic projection of an upper metal patch on the target plane overlaps with the orthographic projection of an emitting element on the target plane, and the second metal area is used to couple the electromagnetic waves radiated from the emitting element;

[0206] A third circuit board layer is located on a side of the metal layer away from the feed structure layer and is used to transmit the electromagnetic wave coupled to the second metal area to the radiation patch;

[0207] The radiation layer includes a plurality of radiation patches, wherein an orthographic projection of a radiation patch on the target plane overlaps with an orthographic projection of a second metal area on the target plane, and the radiation patch is used to radiate the received electromagnetic waves outwards;

[0208] Among them, the metal layer, the third circuit board layer and the radiation layer can be called radiation structures, and the liquid crystal box, the receiving element and the transmitting element can be called phase-shifting structures; specifically, the receiving element, the transmitting element and the liquid crystal therein stacked in the longitudinal direction and having an overlapping area are called a phase-shifting structure, and the first metal area, the second metal area and the radiation patch stacked in the longitudinal direction and having an overlapping area are called a radiation structure, and a phase-shifting structure and a radiation structure constitute an antenna unit.

[0209] Based on the same inventive concept, the present disclosure also provides a communication device, including the antenna device described in any of the above examples.

[0210] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0211] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0212] The above is a detailed introduction to an antenna device and a communication device provided by the present disclosure. Specific examples are used in this article to illustrate the principles and implementation methods of the present disclosure. The description of the above embodiments is only used to help understand the method of the present disclosure and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present disclosure, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present disclosure.

[0213] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0214] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

[0215] References herein to "one embodiment," "embodiment," or "one or more embodiments" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in at least one embodiment of the present disclosure. In addition, please note that examples of the term "in one embodiment" do not necessarily all refer to the same embodiment.

[0216] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present disclosure can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0217] In the claims, any reference signs placed between brackets shall not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present disclosure may be implemented by means of hardware comprising a number of different elements and by means of a suitably programmed computer. In a unit claim enumerating a number of means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc. does not indicate any order. These words may be interpreted as names.

[0218] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. An antenna device, characterized in that: include: A feed structure layer, and an antenna structure layer arranged on the feed structure layer; wherein, The feed structure layer includes at least one feed, and the at least one feed is arranged on the target plane. The feed includes a tubular conductor with a hollow interior, and the axis of the conductor is parallel to the target plane. The conductor is provided with a gap on a side close to the antenna structure layer. The antenna structure layer comprises a plurality of antenna units, and the orthographic projections of the antenna units on the target plane overlap with the orthographic projections of the slots on the target plane; The feed source is used to generate electromagnetic waves, which are transmitted along the axial direction of the conductor and coupled to the antenna unit after being emitted through the gap. The antenna unit is used to radiate the coupled electromagnetic waves outward.

2. The antenna device according to claim 1, characterized in that The feed source comprises a first end and a second end opposite to each other in the axial direction, the first end being used to input electromagnetic waves; a plurality of the feed sources are arranged in an array, and the feed source structure layer further comprises: at least one power division structure, the power division structure being coupled to the second end of the first feed source and the first end of at least one second feed source, respectively, wherein the electromagnetic wave emitted from the second end of the first feed source is coupled to the first end of the second feed source via the power division structure; The direction of the electromagnetic wave radiated from the slot of the second feed source is the same as the direction of the electromagnetic wave radiated from the slot of the first feed source.

3. The antenna device according to claim 2, characterized in that The feed structure layer comprises a signal input port, and the plurality of power division structures comprises a first power division structure and at least one second power division structure; Wherein, a first end of a first feed source coupled to the first power division structure is connected to the signal input port, and a second end of a second feed source coupled to the first power division structure is coupled to the second power division structure; The second power division structure is configured to couple the electromagnetic wave emitted from the second end of the second feed source coupled to the first power division structure to the first end of the second feed source coupled to the second power division structure.

4. The antenna device according to claim 3, characterized in that: The method comprises a plurality of the second power division structures, wherein the second power division structure is arranged between two adjacent third feeds among a plurality of third feeds except the first feed coupled to the first power division structure, and the second power division structure is respectively coupled to the second end of one third feed and the first end of another third feed, so as to transmit the electromagnetic waves that are not completely radiated in the previous third feed to the next third feed through the second power division structure.

5. The antenna device according to claim 2, characterized in that: The power division structure includes an equal power division structure and / or an unequal power division structure; The first ends of the plurality of second feed sources coupled to the equal power division structure receive electromagnetic waves of the same power, and the first ends of the plurality of second feed sources coupled to the unequal power division structure receive electromagnetic waves of different powers respectively.

6. The antenna device according to claim 2, characterized in that: The slot of the second feed source is different from the slot of the first feed source, and the slot includes a pair of first slot and second slot, wherein the spacing between the first slot and the second slot of the first feed source is different from the spacing between the first slot and the second slot of the second feed source, so that the direction of the electromagnetic wave radiated by the second feed source is the same as the direction of the electromagnetic wave radiated by the first feed source.

7. The antenna device according to claim 2, characterized in that: In a column arranged along the column direction, the first end of one of every two adjacent feed sources is arranged on the same side as the second end of the other feed source, so that the two adjacent feed sources are coupled through one power splitting structure; Among them, the gap of one of the two adjacent feed sources radiates the fundamental wave, and the gap of the other feed source radiates the -1 harmonic outward.

8. The antenna device according to claim 1, characterized in that The cross-sectional shape of the conductor perpendicular to the target plane includes at least one of a rectangle, a circle, an ellipse, a ridge, and a fin.

9. The antenna device according to any one of claims 1 to 8, characterized in that: At least one of the gaps is included, and the shape of the gap includes at least one of a circle, an ellipse, a plum blossom, and a strip.

10. The antenna device according to claim 9, characterized in that: The method comprises a plurality of the slots, wherein the plurality of slot groups are divided into at least one pair of slot groups; wherein the slot group comprises two slots arranged at intervals; The orthographic projection of one antenna unit on the target plane covers the orthographic projection of one slot group on the target plane, and there is no overlap between the orthographic projections of multiple antenna units on the target plane.

11. The antenna device according to claim 10, characterized in that: A plurality of pairs of the slot groups are arranged periodically, wherein a first distance between two slots in a slot group is smaller than a second distance between the slot groups.

12. The antenna device according to claim 9, characterized in that: The gap includes at least one continuous gap; wherein the continuous gap includes a plurality of third gaps, and the plurality of third gaps are interconnected through a fourth gap; wherein the shape of the third gap is different from the shape of the fourth gap; The orthographic projection of one of the continuous gaps on the target plane overlaps with the orthographic projection of at least one antenna unit on the target plane, and there is no overlap between the orthographic projections of multiple antenna units on the target plane.

13. The antenna device according to claim 12, characterized in that: The dimension of the third slot in the radial direction of the conductor is greater than the dimension of the fourth slot in the radial direction; wherein the radial direction is parallel to the target plane and orthogonal to the axial direction.

14. The antenna device according to claim 12, characterized in that: The shape of the third slit includes at least one of a cross shape and a plum blossom shape, and the shape of the fourth slit includes at least one of a strip shape, an arc shape, and a wave shape.

15. The antenna device according to claim 12, characterized in that: It comprises a plurality of the continuous gaps, and the plurality of the continuous gaps are interconnected; or, there are intervals between the plurality of the continuous gaps.

16. The antenna device according to claim 1, characterized in that Comprising a plurality of the feed sources, the plurality of the feed sources are arranged along a first direction on the target plane, and the plurality of the slits included in the feed sources are arranged along a second direction; wherein the first direction and the second direction are orthogonal; The orthographic projection of one antenna unit on the target plane covers the orthographic projection of one slot or a plurality of adjacent slots on the target plane.

17. The antenna device according to claim 1, characterized in that: Also includes: A matching structure layer, located between the feed structure layer and the antenna structure layer; The matching structure layer includes a plurality of first metal areas, an orthographic projection of one of the first metal areas on the target plane overlaps with an orthographic projection of one of the gaps on the target plane, and an orthographic projection of the antenna unit on the target plane overlaps with an orthographic projection of the first metal area on the target plane; The first metal area is configured to couple the electromagnetic waves radiated from the gap and couple the coupled electromagnetic waves to the antenna unit.

18. The antenna device according to claim 17, characterized in that: The antenna unit includes a phase shift structure and a radiation structure; wherein the phase shift structure includes a receiving element and a transmitting element, the receiving element is used to couple the electromagnetic wave emitted by the first metal area, and the radiation structure includes a radiation patch; The orthographic projection of the receiving element on the target plane overlaps with the orthographic projection of the first metal area on the target plane, and the orthographic projection of the transmitting element on the target plane overlaps with the orthographic projection of the radiation patch on the target plane; The phase shifter is configured to perform phase modulation on the electromagnetic wave coupled to the receiving element, and the phase-modulated electromagnetic wave is coupled to the radiation patch via the transmitting element.

19. The antenna device according to claim 17, characterized in that: Also includes: A first circuit board layer is arranged on a side of the matching structure layer close to the feed structure layer; A second circuit board layer is arranged on a side of the matching structure layer away from the feed structure layer; Wherein, the metal patterns of the first circuit board layer and the second circuit board layer are axisymmetric.

20. A communication device, characterized in that: The communication device comprises the antenna device according to any one of claims 1-19.

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