CN117748140A - High-frequency radiation unit, antenna and base station - Google Patents

Abstract

The invention provides a high-frequency radiating unit, an antenna and a base station, wherein the high-frequency radiating unit comprises a dielectric plate and two pairs of full-wave vibrators which are orthogonally arranged in polarization, the full-wave vibrators comprise a radiating ring, the radiating ring comprises full-wave branches and a feed coupling part, the full-wave branches and the feed coupling part are respectively arranged on the front side and the back side of the dielectric plate, and the full-wave branches and the feed coupling part are coupled to form the radiating ring. The full-wave branches arranged on the front side and the back side of the dielectric plate are connected with the feed coupling part to form a radiation ring so as to realize high-frequency-band coupling communication, but for a low frequency band, the full-wave branches are disconnected with the feed coupling part so that the high-frequency radiation unit cannot be equivalent to a monopole oscillator of the low frequency band, thereby effectively weakening the damage to radiation signals of the low-frequency radiation units arranged in a co-array mode, further realizing the aim of inhibiting low-frequency harmonic waves, improving the performance of a low-frequency directional diagram and facilitating the co-array arrangement of the high-frequency radiation units and the low-frequency radiation units.

Description

High-frequency radiation unit, antenna and base station

Technical Field

The invention belongs to the technical field of mobile communication, and particularly relates to a high-frequency radiating unit, an antenna provided with the high-frequency radiating unit and a base station provided with the antenna.

Background

With the rapid development of modern mobile communication technology, the demand of users for high-capacity, low-latency communication has increased, and thus, the fifth generation mobile communication network has grown. In the domestic 5G mobile communication network construction process, a plurality of network systems are required to cooperatively develop, for example, 2G, 3G, 4G and 5G networks work simultaneously; but different network systems need to adopt antennas with different frequency bands, so that the number of antennas on each base station site is increased sharply, the construction and maintenance cost of the antenna base station site is greatly increased, the waste of antenna environment resources is caused, and the urban appearance is influenced by excessive antennas. Therefore, the antenna with multiple systems is integrated into a whole in the industry so as to form a multi-frequency antenna with small size, common caliber and integration to meet the application requirements of mobile communication, and the problems of insufficient space, insufficient hanging height, poor coverage, poor performance and the like of the current antenna are solved.

The multi-frequency antenna is mainly formed by a high-frequency array and a low-frequency array, and under the condition of limited size, the distance between the adjacent high-frequency radiating units and the low-frequency radiating units is required to be reduced in order to integrate more radiating units, but after the distance between the adjacent two radiating units is reduced, the mutual coupling interference between the two radiating units is increased sharply, and the radiation performance of the radiating units is affected.

Since the frequency band of the high-frequency radiating element is about 2 times that of the low-frequency radiating element, the balun with the length of 1/4 wavelength of the high-frequency radiating element and the radiating surface with the length of 1/4 wavelength are connected to be equivalent to a monopole of the low-frequency radiating element. When the low-frequency radiation unit works, radiation signals of the low-frequency radiation unit directly flow to the high-frequency radiation unit through the space coupling or grounding reflection surface, and the high-frequency radiation unit acts as a low-frequency monopole antenna to perform secondary radiation, so that the radiation performance of the low-frequency radiation unit is damaged, and the working performance of the multi-frequency antenna is greatly influenced.

Disclosure of Invention

The present invention is directed to solving at least one of the above problems and providing a high frequency radiating element, an antenna and a base station.

The invention is suitable for various purposes, and adopts the following technical scheme:

according to one of the purposes of the invention, the high-frequency radiating unit comprises a dielectric plate and two pairs of full-wave vibrators orthogonally arranged in polarization, wherein the full-wave vibrators comprise a radiating ring, the radiating ring comprises full-wave branches and a feed coupling part, the full-wave branches and the feed coupling part are respectively arranged on the front side and the back side of the dielectric plate, and the full-wave branches and the feed coupling part are coupled to form the radiating ring.

Further, the full-wave vibrator is a full-wave dipole.

Further, the feed coupling portion includes a pair of connection stubs, and the full-wave stubs are respectively coupled with the pair of connection stubs.

Further, the full-wave branch comprises a half-wave branch and a pair of first coupling branches, two ends of the half-wave branch are respectively connected with the pair of first coupling branches, and the pair of first coupling branches are respectively connected with the pair of connecting branches in a coupling manner.

Specifically, the length of the half-wave branch is 1/2 of the working wavelength of the high-frequency radiating unit, and the sum of the lengths of the pair of first coupling branches is 1/2 of the working wavelength of the high-frequency radiating unit.

Specifically, the full-wave branch is further provided with a transition branch, and the transition branch is connected with the half-wave branch and the corresponding first coupling branch.

Further, the connection stub includes a second coupling stub coupled in parallel with the corresponding first coupling stub and a feeding stub coupled to each other.

Further, in the projection direction of the front surface of the dielectric plate, the projection of the first coupling branch is overlapped or overlapped with the projection of the corresponding second coupling branch.

Specifically, the first coupling branches and the corresponding second coupling branches are arranged in equal length.

Further, the high-frequency radiating unit further comprises a pair of balun and a grounding plate, the pair of balun is inserted on the grounding plate, and the pair of balun respectively feeds the two pairs of full-wave vibrators.

Further, the balun comprises a balun plate and a balun circuit, the balun circuit comprises a balun feeder line and a first grounding wire which are arranged on the front surface of the balun plate, and a second grounding wire which is arranged on the back surface of the balun plate, the balun feeder circuit is coupled with a corresponding full-wave oscillator, and the first grounding wire and the second grounding wire are electrically connected through a metallized via hole.

Further, a balun connection hole is formed in the grounding plate, a third grounding wire is arranged on the back surface of the grounding plate, the balun plate is inserted into the balun connection hole, and the second grounding wire is electrically connected with the third grounding wire through the metalized through hole.

Further, the first grounding wire, the second grounding wire and the third grounding wire are electrically connected through the same metallized via hole.

An antenna according to one of the objects of the present invention includes a reflecting plate and a radiating array including a low-frequency radiating array and a high-frequency radiating array, at least one high-frequency radiating array being arranged between a plurality of low-frequency radiating arrays, the high-frequency radiating array being composed of a plurality of high-frequency radiating elements, the high-frequency radiating elements being the high-frequency radiating element according to any one of the previous objects.

One of the objects of the invention is adapted to provide a base station comprising an antenna as described in the previous object.

The present invention has many advantages over the prior art, including but not limited to:

the full-wave branches arranged on the front side and the back side of the dielectric plate are connected with the feed coupling part to form a radiation ring so as to realize high-frequency-band coupling communication, but for a low frequency band, the full-wave branches are disconnected with the feed coupling part and are not communicated, so that the high-frequency radiation unit cannot be equivalent to a monopole oscillator of the low-frequency radiation unit, the damage to radiation signals of the low-frequency radiation unit arranged in a co-array is effectively reduced, the aim of inhibiting low-frequency harmonic waves is further realized, the performance of a low-frequency directional diagram is improved, and the high-frequency radiation unit is convenient to be arranged in the co-array with the low-frequency radiation unit.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic structural view of a high-frequency radiating element according to an exemplary embodiment of the present invention.

Fig. 2 is a schematic diagram of the radiation surface of a high-frequency radiation unit according to an exemplary embodiment of the present invention.

Fig. 3 is a schematic front view of a radiation surface of a high-frequency radiation unit according to an exemplary embodiment of the present invention.

Fig. 4 is a schematic perspective view of a radiation surface of a high-frequency radiation unit according to an exemplary embodiment of the present invention from a top view.

Fig. 5 is a schematic front view of a balun of a high frequency radiating element according to an exemplary embodiment of the present invention.

Fig. 6 is a schematic diagram of the balun of a high frequency radiating element according to an exemplary embodiment of the present invention.

Fig. 7 is a schematic diagram of the ground plate of the high frequency radiating element according to an exemplary embodiment of the present invention.

Fig. 8 is a schematic front view of a grounding plate of a high-frequency radiating element according to an exemplary embodiment of the present invention.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. The term "and/or" as used herein includes all or any element and all combination of one or more of the associated listed items.

It will be understood by those skilled in the art that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs unless defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The invention provides a high-frequency radiating unit which consists of two pairs of full-wave vibrators, has better radiation performance, can improve isolation degree between polarizations and cross polarization level, and reduces mutual coupling between high frequency and low frequency, so that the high-frequency radiating unit is convenient to be arranged in a co-array manner with a low-frequency radiating unit.

In an exemplary embodiment of the present invention, in combination with fig. 1, the high frequency radiating unit 100 includes a dielectric plate 110 and two pairs of full-wave vibrators 120, the two pairs of full-wave vibrators 120 are disposed in a polarization orthogonal manner, and the full-wave vibrators 120 are disposed on the dielectric plate 110. In this embodiment, the full-wave vibrator 120 is a full-wave dipole, so as to expand the bandwidth of the high-frequency radiating unit 100 and improve the radiation uniformity and the antenna radiation efficiency.

Referring to fig. 4, the full-wave vibrator 120 includes a radiation ring 121, the radiation ring 121 has a ring structure, and the radiation ring 121 includes a full-wave branch 122 and a feed coupling portion 123. The dielectric plate 110 includes a front surface 111 and a back surface 112, and referring to fig. 2 and 3, the full-wave branch 122 is disposed on the back surface 112 of the dielectric plate 110, the feed coupling portion 123 is disposed on the front surface 111 of the dielectric plate 110, and the full-wave branch 122 is coupled with the feed coupling portion 123 to form the radiation ring 121. In one embodiment, the full-wave branch 122 is disposed on the front side 111 of the dielectric plate 110, and the feed coupling 123 is disposed on the back side 112 of the dielectric plate 110.

Referring to fig. 2, the full-wave branch 122 includes a half-wave branch 1221 and a pair of first coupling branches 1222, and both ends of the half-wave branch 1221 are respectively connected to the pair of first coupling branches 1222, such that the full-wave branch 122 forms a semi-enclosed structure. In this embodiment, the length of the half-wave branch 1221 is 1/2 of the working wavelength of the high-frequency radiating unit 100, so that the half-wave branch 1221 may be equivalent to a half-wave vibrator; the sum of the lengths of the pair of first coupling branches 1222 is also 1/2 of the operating wavelength of the high frequency radiating unit 100, so that the pair of first coupling branches 1222 in combination may be equivalently a half-wave branch 1221, so that the full-wave branch 122 may equivalently implement a full-wave vibrator.

In this embodiment, a transition branch 1223 is further disposed between the half-wave branch 1221 and the first coupling branch 1222, and the transition branch 1223 connects the half-wave branch 1221 and the first coupling branch 1222. The half-wave branch 1221 is disposed parallel to the first coupling branch 1222, and the transition branch 1223 is perpendicular to the half-wave branch 1221 and the first coupling branch 1222, respectively. The half-wave branches 1221 and the pair of first coupling branches 1222 are all arranged in parallel, which is equivalent to two half-wave vibrators placed in parallel, so as to further equivalently realize a full-wave vibrator.

In a further embodiment, the pair of first coupling branches 1222 are disposed along the same axis, and the pair of first coupling branches 1222 are disposed opposite to each other, and a gap space is disposed between the pair of first coupling branches 1222, so that the half-wave branch 1221, the pair of first coupling branches 1222, and the pair of transition branches 1223 enclose the full-wave branch 122 forming a semi-enclosed structure.

In an exemplary embodiment of the present invention, referring to fig. 3, the feed coupling portion 123 includes a pair of connection branches 124, the connection branches 124 include a feed branch 1241 and a second coupling branch 1242, and the feed branch 1241 is connected to the second coupling branch 1242.

The feeding branch 1241 extends from the polarization center of the high-frequency radiating unit 100 to a direction away from the polarization center, one end of the feeding branch 1241 away from the polarization center is connected with the second coupling branch 1242, and one end of the feeding branch 1241 close to the polarization center is used for receiving external feeding. In this embodiment, the extension axis of the feeding branch 1241 is parallel to the polarization axis of the polarization.

The pair of connection branches 124 has one feeding branch 1241, that is, the same full-wave oscillator 120 has a pair of feeding branches 1241, and the pair of feeding branches 1241 are disposed in parallel. The pair of feeding branches 1241 are arranged at intervals, and by changing the gap width between the pair of feeding branches 1241, the convergence and isolation of the S-parameters of the high-frequency radiating unit 100 can be changed, so as to optimize the radiation performance of the high-frequency radiating unit 100.

The second coupling branch 1242 is disposed at an angle with respect to the connected feed branch 1241. Referring to fig. 4, the second coupling branch 1242 disposed on the front 111 of the dielectric plate 110 is coupled with the first coupling branch 1222 disposed on the back 112 of the dielectric plate 110, so that the feed coupling portion 123 couples the current to the full-wave branch 122, so that the full-wave vibrator 120 can radiate the signal to the outside. In one embodiment, the feeding branch 1241 of the connecting branch 124 is disposed perpendicular to the second coupling branch 1242, such that the connecting branch 124 forms an L-shaped structure.

Specifically, the first coupling branches 1222 and the corresponding second coupling branches 1242 are coupled in parallel to achieve high-frequency coupling communication, but for a low frequency band, the first coupling branches 1222 and the second coupling branches 1242 are disconnected and not communicated, so that the high-frequency radiating unit 100 cannot be equivalent to monopole oscillators in the low frequency band, thereby effectively weakening the damage to the radiating signals of the low-frequency radiating units arranged in a co-array, further achieving the purpose of suppressing low-frequency harmonics, improving the performance of a low-frequency pattern, and facilitating the co-array arrangement of the high-frequency radiating unit 100 and the low-frequency radiating units.

Further, referring to fig. 4, in the projection direction of the front surface 111 of the dielectric plate 110, the projection of the first coupling branch 1222 is overlapped with or overlapped with the projection of the second coupling branch 1242, so that the first coupling branch 1222 and the second coupling branch 1242 can well implement coupling feeding. In one embodiment, the first coupling branch 1222 and the second coupling branch 1242 are arranged in equal length, and in the projection direction of the front surface 111 of the dielectric plate 110, the projection of the first coupling branch 1222 and the projection of the second coupling branch 1242 are arranged in a coincident manner, so that good coupling feeding is realized between the first coupling branch 1222 and the second coupling branch 1242, and the radiation performance of the high-frequency radiation unit 100 is improved.

In this embodiment, each of the pair of connection branches 124 is provided with a second coupling branch 1242, that is, the feed coupling portion 123 is provided with a pair of second coupling branches 1242, and the pair of second coupling branches 1242 are respectively coupled with the pair of first coupling branches 1222, so that the full-wave branch 122 is coupled with the feed coupling portion 123, thereby forming the radiation ring 121. In the projection direction of the front surface 111 of the dielectric plate 110, the projection of the full-wave branch 122 is connected to the projection of the feed coupling 123 to form a loop structure.

The pair of second coupling branches 1242 are disposed along the same axis, and the pair of second coupling branches 1242 are disposed to extend in different directions, respectively, so that the pair of second coupling branches 1242 are coupled with the pair of first coupling branches 1222. In this embodiment, the extending axis of the second coupling branch 1242 coincides with the extending axis of the first coupling branch 1222, so that the projection of the first coupling branch 1222 overlaps or coincides with the projection of the corresponding second coupling branch 1242 in the projection direction of the front surface 111 of the dielectric plate 110.

In this embodiment, referring to fig. 2 to 4, the full-wave branch 122 is symmetrical about the polarization axis of the polarization, and the pair of connection branches 124 of the feed coupling 123 is also symmetrical about the polarization axis, so that the full-wave vibrator 120 is symmetrical about the polarization axis, and thus the full-wave vibrator 120 forms a full-wave dipole, so as to optimize the radiation performance of the high-frequency radiation unit 100.

In one embodiment, in conjunction with fig. 3, the connection branch 124 is further provided with a third coupling branch 1243, the third coupling branch 1243 is disposed at an end of the second coupling branch 1242, and the third coupling branch 1243 is coupled with the transition branch 1223. On the projection of the front face 111 of the dielectric plate 110, the projection of the third coupling branch 1243 overlaps or couples with the projection of the transition branch 1223 to optimize the coupling feed between the full-wave branch 122 and the feed coupling 123.

In an exemplary embodiment of the present invention, in combination with fig. 1, the high frequency radiating unit 100 further includes a pair of balun 130 and a ground plate 140, and the balun 130 is used to feed the full-wave vibrator 120.

Specifically, referring to fig. 5 and 6, the balun 130 includes a balun plate 131 and a balun circuit disposed on the balun plate 131. The balun circuit includes a balun feeder 132, a first ground line 133, and a second ground line 134, where the balun feeder 132 and the first ground line 133 are disposed on a front surface 1311 of the balun plate 131, and the second ground line 134 is disposed on a back surface 1312 of the balun plate 131.

Referring to fig. 2, the dielectric plate 110 is provided with a first balun jack 113 corresponding to the balun plate 131, the top end of the balun plate 131 is plugged into the first balun jack 113, and the output end of the balun feeder 132 extends to the top end of the balun plate 131, so that the output end of the balun feeder 132 is coupled with a feeding branch 1241 of the feeding coupling portion 123 of the corresponding full-wave oscillator 120 to feed the full-wave oscillator 120. In this embodiment, the first balun jack 113 is disposed at the polarization center.

In the present embodiment, the balun feed lines 132 of one balun 130 are respectively coupled to the feed coupling sections 123 of the two full-wave vibrators 120 of the same polarization so as to feed a pair of full-wave vibrators 120 of the same polarization. The pair of balun 130 is respectively fed with the two pairs of full-wave vibrators 120, and the pair of balun 130 is mutually inserted and fixed.

Referring to fig. 5 and 6, the balun feeder 132 disposed on the front surface 1311 of the balun plate 131 is coupled to the first ground line 133, the second ground line 134 is disposed on the back surface 1312 of the balun plate 131, and the first ground line 133 and the second ground line 134 are electrically connected through a metallized via 135 penetrating through the balun plate 131, so that the high-frequency radiating unit 100 can be grounded. In this embodiment, the first grounding wire 133 has a sheet-like structure, and the second grounding wire 134 also has a sheet-like structure.

In this embodiment, referring to fig. 7, a third ground wire 143 is disposed on the opposite surface 142 of the ground plate 140, a second balun jack 144 is disposed on the ground plate 140, and the bottom of the ground plate 140 is inserted into the second balun jack 144. In one implementation, the ground is in a sheet-like structure.

The second ground wire 134 extends to the bottom of the balun plate 131, and the second ground wire 134 enters the second balun jack 144 along with the bottom plate of the balun plate 131, so that the second ground wire 134 is also directly electrically connected with the third ground wire 143 through the metallized via hole 135, and a communication path among the first ground wire 133, the second ground wire 134 and the third ground wire 143 is shortened, so that excessive ground current is prevented from flowing to the balun 130 of another polarization, and isolation between polarizations and cross polarization level are improved.

In this embodiment, the first grounding wire 133 and the second grounding wire 134 are disposed at the bottom of the balun plate 131, so that the first grounding wire 133, the second grounding wire 134 and the third grounding wire 143 can be electrically connected through the same metallized via hole 135, so that the communication path between the first grounding wire 133, the second grounding wire 134 and the third grounding wire 143 is shortest, the ground current is further reduced to flow to the balun 130 with another polarization, and the isolation between polarizations and the cross polarization level are effectively improved. In addition, the first grounding wire 133, the second grounding wire 134 and the third grounding wire 143 have no complex structure, and the process is not complicated, so that the radiation performance of the high-frequency radiation unit 100 can be effectively improved, and the high-frequency radiation unit has better practicability.

In one embodiment, in conjunction with fig. 8, a feeding line 145 is further provided on the front surface 141 of the ground plate 140, and the feeding line 145 is electrically connected to the balun feeder 132. A feeding point 146 is further provided on the opposite surface 142 of the ground plate 140, and the feeding point 146 is connected to an input terminal of the feeding line 145. In this embodiment, the feed point 146 is soldered to the outer coaxial cable 200. The feeding point 146 is a solder pad.

In one embodiment, the full-wave vibrator 120, the balun feeder 132, the first ground line 133, the second ground line 134, and the third ground line 143 are all composed of copper sheets.

The invention also provides an antenna which comprises a reflecting plate and a radiation array arranged on the reflecting plate, wherein the radiation array comprises a low-frequency radiation array and a high-frequency radiation array. The low-frequency radiation column includes a plurality of low-frequency radiation units that are fed in parallel to each other, the high-frequency radiation column includes a plurality of high-frequency radiation units 100 that are fed in parallel to each other, the high-frequency radiation units 100 are the high-frequency radiation units 100 described above, and the low-frequency radiation column is disposed adjacent to the high-frequency radiation column.

The low-frequency radiation columns and the high-frequency radiation columns are all arranged in a collinear way along the same axis, and because the high-frequency radiation units 100 of the high-frequency radiation columns are the high-frequency radiation units 100, the high-frequency radiation units 100 can reduce mutual coupling with adjacent low-frequency radiation units without affecting radiation performance of the adjacent low-frequency radiation units, and radiation performance of the antenna is optimized.

The invention also provides a base station, which is provided with the antenna, and receives or transmits the antenna signals of the corresponding frequency bands through the antenna.

In summary, the high-frequency radiating element of the present invention is composed of two pairs of full-wave vibrators, so that the mutual coupling between the low-frequency radiating elements arranged in a co-array can be reduced, the performance of the directional diagram is improved, and the communication path between the first grounding wire and the second grounding wire of the balun and the third grounding wire on the grounding plate is shortest, so that the grounding current can be prevented from flowing to the balun of the other polarization, and the radiation performance of the high-frequency radiating element is optimized.

The above description is only illustrative of the preferred embodiments of the present invention and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the invention referred to in the present invention is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept described above. Such as the above-mentioned features and the features having similar functions (but not limited to) of the invention.

Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are example forms of implementing the claims.

Claims (15)

1. The high-frequency radiating unit is characterized by comprising a dielectric plate and two pairs of full-wave vibrators which are orthogonally arranged in polarization mode, wherein the full-wave vibrators comprise a radiating ring, the radiating ring comprises full-wave branches and feed coupling parts which are respectively arranged on the front side and the back side of the dielectric plate, and the full-wave branches are coupled with the feed coupling parts to form the radiating ring.

2. The high frequency radiating element of claim 1, wherein the full wave oscillator is a full wave dipole.

3. The high-frequency radiating element according to claim 1, wherein the feed coupling portion includes a pair of connection stubs, and the full-wave stubs are respectively coupled with the pair of connection stubs.

4. The high-frequency radiating element according to claim 3, wherein the full-wave stub includes a half-wave stub and a pair of first coupling stubs, both ends of the half-wave stub being respectively connected to the pair of first coupling stubs, the pair of first coupling stubs being respectively coupled to the pair of connecting stubs.

5. The high frequency radiating element of claim 4, wherein the half-wave stub has a length of 1/2 of the operating wavelength of the high frequency radiating element, and the sum of the lengths of the pair of first coupling stubs is 1/2 of the operating wavelength of the high frequency radiating element.

6. The high frequency radiating element of claim 4, wherein said full wave limb is further provided with a transition limb connecting said half wave limb with a corresponding first coupling limb.

7. A high frequency radiating element according to claim 3, wherein said connecting stub comprises interconnecting a feed stub with a second coupling stub coupled in parallel with a corresponding first coupling stub.

8. The high-frequency radiating element according to claim 7, wherein the projection of the first coupling stub overlaps or coincides with the projection of the corresponding second coupling stub in the projection direction of the front surface of the dielectric plate.

9. The high frequency radiating element according to claim 8, wherein said first coupling stub is provided at equal length from said corresponding second coupling stub.

10. The high-frequency radiating element according to any one of claims 1 to 9, further comprising a pair of balun and a ground plate, the pair of balun being inserted on the ground plate, and the pair of balun feeding the two pairs of full-wave vibrators, respectively.

11. The high-frequency radiating element according to claim 10, wherein the balun includes a balun plate and a balun circuit including a balun feeder line provided on a front surface of the balun plate and a first ground line and a second ground line provided on a reverse surface of the balun plate, the balun feeder line is coupled to a corresponding full-wave oscillator, and the first ground line and the second ground line are electrically connected via a metallized via.

12. The high frequency radiating element according to claim 11, wherein said ground plate is provided with a balun-shaped contact hole, a third ground wire is provided on the opposite side of said ground plate, said balun-shaped plate is inserted into said balun-shaped hole, and said second ground wire is electrically connected to said third ground wire through a metallized via hole.

13. The high frequency radiating element of claim 12, wherein the first ground line, the second ground line, and the third ground line are electrically connected via the same metallized via.

14. An antenna comprising a reflecting plate and a radiating array, the radiating array comprising a low-frequency radiating array and a high-frequency radiating array, characterized in that at least one high-frequency radiating array is arranged between a plurality of low-frequency radiating arrays, the high-frequency radiating array being composed of a plurality of high-frequency radiating elements, the high-frequency radiating elements being the high-frequency radiating elements as claimed in any one of claims 1 to 13.

15. A base station comprising the antenna of claim 14.