CN112448150B - Radiation unit, antenna and antenna index optimization method - Google Patents
Radiation unit, antenna and antenna index optimization method Download PDFInfo
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- CN112448150B CN112448150B CN202011249696.3A CN202011249696A CN112448150B CN 112448150 B CN112448150 B CN 112448150B CN 202011249696 A CN202011249696 A CN 202011249696A CN 112448150 B CN112448150 B CN 112448150B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0037—Particular feeding systems linear waveguide fed arrays
- H01Q21/0043—Slotted waveguides
- H01Q21/005—Slotted waveguides arrays
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
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Abstract
The invention relates to the technical field of antennas, and discloses a radiation unit, an antenna and an antenna index optimization method, wherein the antenna comprises: the radiation arm group comprises four radiation arms which are distributed in central symmetry, a polarization gap is arranged between any two adjacent radiation arms along the circumferential direction, a slot is formed in the position, corresponding to the polarization gap, of the substrate between the two adjacent radiation arms, and at least one loading medium is arranged in the slot. According to the radiation unit, the antenna and the antenna index optimization method provided by the embodiment of the invention, the slot is formed in the polarization gap between two adjacent radiation arms, and the loading medium is selectively arranged in the slot, so that the improvement of the isolation degree, particularly the improvement of the isolation degree of a high-frequency part in a broadband, can be realized, and the performance of the antenna is improved; and the design structure of the radiation unit reduces the deterioration of directional diagram indexes and standing-wave ratios caused by adding too many isolation strips in the debugging process, and has simple structure and obvious effect.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a radiating unit, an antenna and an antenna index optimization method.
Background
In recent years, mobile communication technology has been rapidly developed, and there are more and more occasions where communication systems of various systems coexist, and as the communication systems of various systems have various different operating frequency bands and with the gradual popularization of mobile communication systems, the operating frequency bands of the communication systems are further widened, so that the requirements of the mobile communication systems on antenna frequency bands are wider. In addition, in order to save the installation resources of the base station and reduce the cost of network construction, the communication system scheme with multiple systems integrated is more and more emphasized and widely adopted. The LTE700, CDMA800MHz, and GSM900MHz systems co-site, which requires the working frequency band of the antenna to be 690-960MHz, so that the antenna can be compatible with each communication system.
Compared with 790-960MHz broadband radiation, 690-960MHz ultra-wideband circuit parameter design is difficult, especially isolation indexes include not only isolation design of the radiation unit itself, but also debugging of antenna isolation. Most of the existing communication systems with multiple systems integrated have the problem that the isolation index is difficult to meet the requirement.
Disclosure of Invention
The embodiment of the invention provides a radiation unit, an antenna and an antenna index optimization method, which are used for solving or partially solving the problem that isolation indexes are difficult to meet requirements in most of the existing communication systems with multiple systems combined into one.
An embodiment of the present invention provides a radiation unit, including: the base plate with locate radiation armset on the base plate, radiation armset is equipped with the polarization gap including four radiation arms that are central symmetric distribution along being equipped with between two arbitrary adjacent radiation arms of circumference, the base plate is equipped with the fluting in the polarization gap correspondence department between two adjacent radiation arms, at least one be equipped with the loading medium in the fluting.
On the basis of the scheme, the length of the loading medium is less than or equal to that of the slot; the loading medium is detachably connected in the slot.
On the basis of the scheme, the width of the slot is smaller than that of the gap; and the end of the slot is positioned within the side of the substrate.
On the basis of the scheme, the radiation arm is of a frame structure.
On the basis of the scheme, the radiation arm group further comprises a support balun connected below the substrate, and the support balun is electrically connected with the radiation arm group.
On the basis of the scheme, the supporting balun comprises a first supporting plate and a second supporting plate which are intersected, and the first supporting plate and the second supporting plate are respectively and vertically connected with the base plate; a first feeding sheet is arranged on the first side surface of the first supporting plate; and a second feeding sheet is arranged on the first side surface of the second supporting plate.
On the basis of the scheme, the second side surface of the first supporting plate is respectively provided with a first grounding surface at two sides of the second supporting plate; and the second side surface of the second supporting plate is respectively provided with a second grounding surface at two sides of the first supporting plate.
On the basis of the scheme, the bottom of the first supporting plate is provided with a first slit groove penetrating through the bottom edge, the top of the second supporting plate is provided with a second slit groove penetrating through the top edge, and the first supporting plate and the second supporting plate are intersected at the first slit groove and the second slit groove.
The embodiment of the invention also provides an antenna which comprises the radiation unit.
The embodiment of the invention also provides an antenna index optimization method based on the antenna, which comprises the following steps: the isolation of the radiating unit and the antenna in the antenna is optimally adjusted by adjusting the size of the slot, the size of the loading medium, the arrangement position of the loading medium and the arrangement quantity; the first feed piece and the second feed piece are adjusted to be correspondingly arranged on the first support plate and the second support plate to form different combinations of side faces, and the isolation of the radiating unit and the antenna in the antenna is optimally adjusted.
According to the radiation unit, the antenna and the antenna index optimization method provided by the embodiment of the invention, the slot is formed in the polarization gap between two adjacent radiation arms, and the loading medium is selectively arranged in the slot, so that the improvement of the isolation degree, particularly the improvement of the isolation degree of a high-frequency part in a broadband, can be realized, and the performance of the antenna is improved; and the design structure of the radiation unit reduces the deterioration of directional diagram indexes and standing-wave ratios caused by adding too many isolating strips in the debugging process, and has simple structure and obvious effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is an overall schematic view of a radiation unit provided by an embodiment of the present invention;
fig. 2 is a schematic top view of a radiation unit provided by an embodiment of the present invention;
fig. 3 is a schematic diagram of a first feeding sheet on a first supporting plate according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a first ground plane on a first support plate according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a second feeding tab on a second support plate according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a second ground plane on a second supporting board according to an embodiment of the present invention;
FIG. 7 is a first combined schematic diagram of a first feed tab and a second feed tab provided by an embodiment of the invention;
FIG. 8 is a second combined schematic diagram of the first feeding tab and the second feeding tab provided by the embodiment of the invention;
fig. 9 is a third combined schematic diagram of the first feeding sheet and the second feeding sheet according to the embodiment of the present invention.
Reference numerals:
10. a radiation arm group; 101. a first radiating arm; 102. a second radiating arm; 103. a third radiating arm; 104. a fourth radiation arm; 1041. a fourth radiation arm and a first radiation arm polarization slot; 1012. a first radiation arm and a second radiation arm polarization slot; 1023. a second radiating arm and a third radiating arm polarizing slot; 1034. a third radiating arm and a fourth radiating arm polarizing slot; 20. a substrate; 30. a support balun; 301. a first support plate; 3011 and 3012, a first boss; 3013. a first slot; 3014 and 3015, a first ground plane; 302. a second support plate; 3021 and 3022, a second boss; 3023. a second slot; 3024 and 3025, a second ground plane; 40. a feed patch group; 401. a first feeding tab; 401a, a first feed tab first form; 401b, first feed tab second form; 401c, a first feeding sheet third form; 402. a second feeding tab; 402a, second feed tab first form; 402b, second feed tab second form; 402c, second feed tab third form; 50. loading a medium; 501. a first loading medium; 502. a second loading medium; 503. a third loading medium; 504. a fourth loading medium.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a radiation unit including: the radiation arm group 10 comprises four radiation arms which are distributed in central symmetry, a polarization gap is arranged between any two adjacent radiation arms along the circumferential direction, a slot is arranged at the position, corresponding to the polarization gap, of the substrate 20 between the two adjacent radiation arms, and a loading medium 50 is arranged in at least one slot.
Referring to fig. 2, the radiating arm group 10 specifically includes a first symmetric element composed of a first radiating arm 101 and a second radiating arm 102, and a second symmetric element composed of a third radiating arm 103 and a fourth radiating arm 104, and the four radiating arms are rotationally symmetric about an intersection point. A polarization gap is arranged between each two of the first radiation arm 101, the second radiation arm 102, the third radiation arm 103 and the fourth radiation arm 104, and four polarization gaps are arranged in total. The four polarization slits are rotationally symmetrical about the center of the radiation unit and extend from the center of the radiation unit to the horizontal direction or the vertical direction. The polarized gap is a gap between two adjacent radiation arms; that is, a gap is formed between the side edges of the substrate where the two adjacent radiation arms are connected, so as to form a polarization gap. The shape of the polarized slot is consistent with the shape of the side edge of the radiation arm and is arranged along the side edge of the radiation arm.
The substrate 20 is provided with a slot at a position corresponding to the polarization slit. The grooves are openings penetrating the substrate 20 in the thickness direction thereof. A slot can be arranged at the corresponding position of each polarization gap so as to improve the isolation of the radiation unit. The loading medium 50 can be selectively placed in the slot according to performance design requirements. The loading medium 50 is mainly used to tune the equivalent size of the polarization gap.
In the radiation unit provided in this embodiment, a slot is formed in the polarization slot between two adjacent radiation arms, and the loading medium 50 is selectively disposed in the slot, so that the isolation can be improved, especially the isolation of the high frequency part in the broadband, and the antenna performance can be improved; and the design structure of the radiation unit reduces the deterioration of directional diagram indexes and standing-wave ratios caused by adding too many isolating strips in the debugging process, and has simple structure and obvious effect.
On the basis of the above embodiment, further, the length of the loading medium 50 is less than or equal to the length of the slot; the loading medium 50 is disposed in the slot, and may be disposed along the slot. And researches show that the different lengths of the loading media 50 have different influences on the isolation performance, and the specific lengths of the loading media 50 can be set according to the actual performance design requirements. The loading medium 50 is removably attached in the slot. Facilitating replacement of loading media 50 of different lengths in the slots.
Further, the loading medium 50 may be detachably attached in the slot by a screw; a clamping groove can also be arranged in the slot, a clamping block is correspondingly arranged on the loading medium 50, and the loading medium 50 and the slot can be detachably connected through the clamping block and the clamping groove. The specific attachment structure of the loading medium 50 and the slot is not limited.
On the basis of the above embodiment, further, the width of the slot is smaller than that of the gap; avoiding any impact on the radiating armset 10. With the ends of the slots being located inward of the sides of the base plate 20. I.e., the slots do not extend through the sides of the substrate 20; the sides of the substrate 20 are not broken at the edges. Is favorable for ensuring the supporting strength of the substrate.
Specifically, referring to fig. 2, the radiation arm assembly 10 provided in this embodiment includes a first radiation arm 101, a second radiation arm 102, a third radiation arm 103, and a fourth radiation arm 104; the first radiation arm 101 and the third radiation arm 103 are arranged in a straight line shape in the + 45-degree or-45-degree direction to form a first radiation arm group; the second radiation arm 102 and the fourth radiation arm 104 are linearly arranged in the +45 ° or-45 ° direction, forming a second radiation arm group. The polarization slot between the fourth radiation arm 104 and the first radiation arm 101 is set as the fourth radiation arm and first radiation arm polarization slot 1041; the polarization gap between the first radiation arm 101 and the second radiation arm 102 is set to be a first radiation arm and second radiation arm polarization gap 1012; the polarization slit between the second radiation arm 102 and the third radiation arm 103 is set as the second radiation arm and third radiation arm polarization slit 1023; the polarizing slot between the third radiating arm 103 and the fourth radiating arm 104 is provided as third and fourth radiating arm polarizing slots 1034.
A slot is formed in the fourth radiation arm and first radiation arm polarization slot 1041, and a first loading medium 501 is loaded; the first radiation arm and the second radiation arm polarization slot 1012 are provided with grooves, and the second loading medium 502 is loaded; the second radiation arm and the third radiation arm polarization slit 1023 are slotted, and a third loading medium 503 is loaded; the third and fourth radiation arm polarization slots 1034 are slotted and loaded with a fourth loading medium 504.
Preferably, the length of the polarization slit is equal to the distance from the center of the radiating element to the end of the substrate 20 in the horizontal or vertical direction, and the short length, i.e., the width, is equal to the distance between the edges of the adjacent radiating arms. The size of the slot on the fourth radiation arm and first radiation arm polarization slot 1041 is slightly smaller than that of the fourth radiation arm and first radiation arm polarization slot 1041. The width of the slot is 0.05-0.1 wavelength; the wavelength is determined by the central frequency point of the working frequency band. The direction is from the center of the radiating element to the side edge of the substrate 20; the length and width of the slot are determined by the electrical index of the radiating element. Whether the size of the first loading medium 501 is consistent with that of the slot, whether the first loading medium is loaded or the loading position affects the electrical index, especially the isolation, of the radiation unit.
Preferably, the first and second radiation arm polarization slits 1012, the second and third radiation arm polarization slits 1023, the third and fourth radiation arm polarization slits 1034, and the corresponding loading medium 50 are implemented in a manner consistent with the fourth and second radiation arm polarization slits 1041.
Further, the loading medium 50 is a plastic or ceramic member; the dielectric constant of the loading medium 50 is > 1; for tuning the equivalent electrical length and width of the polarization slit.
On the basis of the above embodiment, further, the radiation arm has a frame structure. Preferably, the radiating arms may be disposed along the edges of the substrate 20, effectively utilizing the substrate area.
On the basis of the above embodiment, further, referring to fig. 1, the radiation unit provided in this embodiment further includes a supporting balun 30 connected below the substrate 20, and the supporting balun 30 is electrically connected to the radiation arm group 10. The support balun 30 is disposed right below the radiation arm assembly 10, and may be implemented by integral die-casting or may be a printed circuit structure. The radiation arm set 10 and the substrate 20 are supported and electrically connected with the radiation arm set 10 to realize grounding.
On the basis of the above embodiment, further, when the support balun 30 is a printed circuit structure: the support balun 30 comprises a first support plate 301 and a second support plate 302 intersecting, and the first support plate 301 and the second support plate 302 are respectively connected perpendicularly to the base plate 20. The support balun 30 is provided with a feed plate group 40. The feed sheet group 40 is divided into plus 45 ° polarization and minus 45 ° polarization, and the feeding to the radiation arm group 10 can be realized by direct connection or coupling connection.
Specifically, referring to fig. 3, a first feeding sheet 401 is disposed on a first side surface of the first support plate 301; referring to fig. 5, a second feeding tab 402 is provided on a first side surface of the second support plate 302. Further, the first and second support plates 301 and 302 may be disposed along diagonal lines of the radiation arm set 10, respectively, below the substrate 20.
On the basis of the above embodiment, further, referring to fig. 4, the second side surface of the first support plate 301 is provided with first ground planes 3014 and 3015 on both sides of the second support plate 302, respectively; referring to fig. 6, the second side of the second support plate 302 is provided with second ground planes 3024 and 3025 on both sides of the first support plate 301, respectively. The first side and the second side of the first support plate 301 are opposite sides. Since the first support plate 301 and the second support plate 302 are in an intersecting state, the first side and the second side of the first support plate 301 are divided into two parts located at both sides of the second support plate 302, respectively. Likewise, the first side and the second side of the second support plate 302 are opposite sides. The first side and the second side of the second support plate 302 are divided into two parts located at both sides of the first support plate 301, respectively.
I.e. the first feed tab 401 and the ground plane on the first support plate 301 are located on opposite sides. The second feed tab 402 and the ground plane on the second support plate 302 are also located on opposite sides. A first ground plane 3014 is provided on one side of the second support plate 302 on the second side of the first support plate 301, and a first ground plane 3015 is provided on the other side of the second support plate 302. A second ground plane 3024 is provided on the second side of the second support plate 302 on one side of the first support plate 301 and a second ground plane 3025 is provided on the other side of the first support plate 301.
On the basis of the above embodiment, further, referring to fig. 3, the top of the first support plate 301 is connected with first bosses 3011 and 3012 on both sides of the second support plate 302, referring to fig. 5, the top of the second support plate 302 is connected with second bosses 3021 and 3022 on both sides of the first support plate 301, and the two first bosses and the two second bosses penetrate through the substrate 20 and correspond to the four radiation arms one by one. The base plate 20 is provided with openings at positions corresponding to the first bosses and the second bosses for the first bosses and the second bosses to pass through.
Further, the first ground plane can extend to the position of the first boss to be connected with the corresponding radiation arm; the second ground plane can extend to the second boss to be connected with the corresponding radiation arm.
In addition to the above-mentioned embodiment, referring to fig. 3, the bottom of the first support plate 301 is provided with a first slot 3013 penetrating through the bottom edge, referring to fig. 5, the top of the second support plate 302 is provided with a second slot 3023 penetrating through the top edge, and the first support plate 301 and the second support plate 302 intersect at the first slot 3013 and the second slot 3023.
Specifically, referring to fig. 3 and 4, the supporting balun 30 provided in this embodiment is composed of a first supporting plate 301 and a second supporting plate 302, where the first supporting plate 301 is provided with a first boss 3011 and a first boss 3012, a first slot 3013, a first ground plane 3014, and a first ground plane 3015. In a specific embodiment, the first boss 3011 and the first boss 3012 penetrate through the substrate 20, and are electrically connected to the first radiation arm 101 and the third radiation arm 103, or the second radiation arm 102 and the fourth radiation arm 104 by the first ground plane 3014 and the first ground plane 3015. The first ground plane 3014 and the first ground plane 3015 provide the first feed patch 401 with respect to the opposite faces of the first support plate 301; the first feeding piece 401 and the first radiation arm 101 and the third radiation arm 103, or the second radiation arm 102 and the fourth radiation arm 104 may be directly electrically connected or indirectly connected in a coupling manner.
Referring to fig. 5 and 6, the second support plate 302 is provided with second bosses 3021 and 3022, a second slot 3023, a second ground plane 3024, and a second ground plane 3025. In a specific embodiment, the second boss 3021 and the second boss 3022 penetrate the substrate 20 and are electrically connected to the first radiation arm 101 and the third radiation arm 103, or the second radiation arm 102 and the fourth radiation arm 104 through the second ground plane 3024 and the second ground plane 3025. The second ground plane 3024 and the second ground plane 3025 provide the second feed sheet 402 with respect to the opposite surfaces of the second support plate 302; second feed tab 402 and first radiating arm 101 and third radiating arm 103, or second radiating arm 102 and fourth radiating arm 104, may or may not be directly electrically connected in a coupled fashion.
The first support plate 301 and the second support plate 302 are arranged vertically to each other directly below the radiating element, and in a specific embodiment, the first support plate 301 is placed vertically to each other by passing the first slot 3013 and the second slot 3023 through the second support plate 302.
Further, the first end of the first feed tab 401 on the first support plate 301 extends to the bottom of the first support plate 301 at one side of the second support plate; the second end passes through the second support plate 302. The first end of the second feeding tab 402 on the second support plate 302 extends to the bottom of the second support plate at one side of the first support plate; the second end passes through the first support plate. Specifically, the first end of the first feeding tab 401 and the first end of the second feeding tab 402 are located on the same side of the first support plate 301 and the second support plate 302 along the circumferential direction, referring to fig. 7; alternatively, the first end of the first feeding tab 401 and the first end of the second feeding tab 402 are disposed opposite to each other, referring to fig. 8; alternatively, the first end of the first feeding piece 401 and the first end of the second feeding piece 402 are disposed opposite to each other, referring to fig. 9.
Fig. 7 is a schematic diagram illustrating an arrangement of first feeding tab first form 401a and second feeding tab first form 402a, that is, along the circumferential direction of supporting balun 30, when the first end of first feeding tab 401 is located at the front side or the rear side of first supporting plate 301, the first end of second feeding tab 402 is located at the front side or the rear side of second supporting plate 302. Fig. 8 is a schematic view illustrating an arrangement of a second form 401b of the first feeding tab and a second form 402b of the second feeding tab, that is, a first end of the first feeding tab and a first end of the second feeding tab are correspondingly arranged on opposite sides of the first support plate and the second support plate. Fig. 9 is a schematic diagram of the arrangement of the third feeding tab 401c and the third feeding tab 402c, that is, the first end of the first feeding tab and the first end of the second feeding tab are correspondingly arranged on the opposite sides of the first supporting plate and the second supporting plate.
Further, the substrate 20, the first support plate 301 and the second support plate 302 may use low-cost FR-4, which is only a carrier of the radiating arm group 10, the feed plate group and the ground plane, and its own characteristics are stable, and have less influence on the radiating element.
On the basis of the foregoing embodiments, further, the present embodiment provides an antenna, which includes the radiation unit described in any of the foregoing embodiments. The number and position of the loading media in the polarization slots in the radiation unit are determined by the performance of the antenna array.
On the basis of the foregoing embodiments, further, the present embodiment provides an antenna index optimization method based on the foregoing antenna, where the antenna index optimization method includes: the isolation of the radiating unit and the antenna in the antenna is optimally adjusted by adjusting the size of the slot, the size of the loading medium, the arrangement position of the loading medium and the arrangement quantity. Through adjusting the combination that first feed piece and second feed piece correspond the different sides that set up in first backup pad and second backup pad, optimize the regulation to radiating element in the antenna and the isolation of antenna. That is, when the feeding strip group 40 is a printed circuit structure, the combination of the feeding strips disposed on different surfaces of the supporting board can achieve the improvement of the isolation of the radiating elements.
On the basis of the foregoing embodiments, further, the present embodiment provides a radiating element, an antenna, and an antenna index optimization method, which are intended to improve isolation in a wideband antenna and improve antenna characteristics fundamentally, and include: the antenna comprises a radiation arm group 10, a substrate 20, a support balun 30, a feed sheet group 40 and a loading medium 50; the radiating arm group 10 is composed of two pairs of dipoles which are mutually crossed and arranged in a +/-45-degree direction, is realized by a printed circuit structure, and is covered on a substrate 20 to form a radiating main body part. Four polarization gaps are arranged between every two adjacent radiation arms, the width of each polarization gap is approximately equal to 0.05-0.1 wavelength, and the wavelength is determined by the central frequency point of the working frequency band.
The polarized gap is arranged along the horizontal or vertical direction, a gap slot with the size smaller than that of the polarized gap is arranged on the polarized gap, the size of the slot is determined by the design of circuit parameters, and the isolation degree can be improved by selectively loading a medium in the gap slot, particularly the isolation degree of a high-frequency part in a broadband; the loading medium 50 is a loading member between the polarization slots in the radiation armset 10, and mainly adjusts the equivalent size of the polarization slots.
The support balun 30 may be an integrated die-cast structure, or may be a printed circuit structure, which has the functions of supporting the radiation body and electrically grounding. The feed sheet group 40 is divided into plus 45 degree feed and minus 45 degree feed, and every two feeds are crossed and do not intersect; the power supply device can be directly connected with the radiation body and can also be connected with the radiation body in a coupling mode, and the power supply to the radiation body is realized. When the feed sheet group 40 is arranged on the support plate for the printed circuit, the isolation degree is different when the feed sheet group is arranged on different surfaces of the support plate, and the isolation degree can be optimized through comparison simulation. The optimization of the circuit parameters of the radiating unit, particularly the improvement of the isolation, is realized by the layout directions of two polarizations of the feed sheet group and the method of slotting between the radiating arm groups and loading a medium with high dielectric constant.
Further, the radiation unit arrangement structure for improving the isolation index provided by the embodiment is more suitable for a radiation unit with a printed circuit structure. The present embodiment provides two isolation optimization schemes mainly for a radiation unit of a printed structure, one is to optimize the isolation of the radiation unit itself by optimizing a feed structure, and the other is to improve the isolation of the radiation unit itself and an antenna array by slotting a polarization slot of the radiation unit and loading a medium. The design reduces the deterioration of directional diagram indexes and standing-wave ratios caused by adding too many isolating strips in the debugging process, and has simple structure and obvious effect.
This embodiment has solved among the prior art isolation of ultra wide band radiating element itself and the improvement of isolation among the array antenna through providing a radiating element and antenna, has reduced the debugging degree of difficulty, simple structure, easy realization.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A radiating element, comprising: the radiation arm group comprises four radiation arms which are distributed in central symmetry, a polarization gap is arranged between any two adjacent radiation arms along the circumferential direction, a notch is arranged on the substrate at the position corresponding to the polarization gap between the two adjacent radiation arms, and a loading medium is arranged in at least one notch;
the length of the loading medium is less than or equal to that of the slot; the loading medium is detachably connected in the open slot.
2. The radiating element of claim 1, wherein the slot has a width less than a width of the slot; and the end of the slot is positioned within the side of the substrate.
3. The radiating element of claim 1, wherein the radiating arm is a bezel structure.
4. The radiating element of any one of claims 1 to 3, further comprising a support balun connected below the substrate, the support balun being electrically connected to the radiating arm assembly.
5. The radiating element of claim 4, wherein the support balun includes a first support plate and a second support plate intersecting, the first support plate and the second support plate being vertically connected to the base plate, respectively; a first feeding sheet is arranged on the first side surface of the first supporting plate; and a second feeding sheet is arranged on the first side surface of the second supporting plate.
6. The radiating element of claim 5, wherein the second side of the first support plate is provided with a first ground plane on each side of the second support plate; and the second side surface of the second supporting plate is respectively provided with a second grounding surface at two sides of the first supporting plate.
7. The radiant unit of claim 5 wherein the bottom of the first support plate is provided with a first slot through the bottom edge and the top of the second support plate is provided with a second slot through the top edge, the first and second support plates intersecting at the first and second slots.
8. An antenna comprising a radiating element according to any of claims 1 to 7.
9. An antenna index optimization method based on the antenna of claim 8, comprising:
the isolation of the radiating unit and the antenna in the antenna is optimally adjusted by adjusting the size of the slot, the size of the loading medium, the arrangement position of the loading medium and the arrangement quantity;
the first feed piece and the second feed piece are adjusted to be correspondingly arranged on the first support plate and the second support plate to form different combinations of side faces, and the isolation of the radiating unit and the antenna in the antenna is optimally adjusted.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6239762B1 (en) * | 2000-02-02 | 2001-05-29 | Lockheed Martin Corporation | Interleaved crossed-slot and patch array antenna for dual-frequency and dual polarization, with multilayer transmission-line feed network |
| US20080169992A1 (en) * | 2007-01-16 | 2008-07-17 | Harris Corporation | Dual-polarization, slot-mode antenna and associated methods |
| CN201374380Y (en) * | 2007-12-29 | 2009-12-30 | 苹果公司 | Antenna for handheld electronic device |
| CN102170049A (en) * | 2011-04-09 | 2011-08-31 | 合肥安大电子检测技术有限公司 | Omnidirectional antenna for broadband horizontal polarization mobile television |
| CN105514568A (en) * | 2015-12-24 | 2016-04-20 | 南京濠暻通讯科技有限公司 | Broadband dual-polarized printed antenna unit |
| CN206992298U (en) * | 2017-05-08 | 2018-02-09 | 江苏亨鑫科技有限公司 | A kind of polarization and four different unit mimo antennas of directional diagram |
| CN108258433A (en) * | 2018-01-05 | 2018-07-06 | 吉林大学 | A kind of compact-sized dual polarization printing slot antenna |
| CN108767452B (en) * | 2018-04-24 | 2024-02-27 | 昆山恩电开通信设备有限公司 | High-performance dual-polarized radiation unit and isolation degree adjusting method |
| CN208904214U (en) * | 2018-08-21 | 2019-05-24 | 深圳市信维通信股份有限公司 | Millimeter wave dual polarization slot antenna system and mobile terminal suitable for 5G communication |
| CN111092292B (en) * | 2018-10-24 | 2022-10-11 | 荷兰移动驱动器公司 | Antenna structure and wireless communication device with same |
| CN110890617A (en) * | 2019-12-06 | 2020-03-17 | 广东盛路通信科技股份有限公司 | PCB oscillator bandwidth improving method, PCB oscillator and base station antenna radiation unit |
| CN110957569B (en) * | 2019-12-30 | 2022-11-04 | 京信通信技术(广州)有限公司 | Broadband radiation unit and antenna |
| CN111864354B (en) * | 2020-07-28 | 2023-04-14 | 中信科移动通信技术股份有限公司 | Radiation unit, base station antenna and antenna performance adjusting method |
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Effective date of registration: 20221129 Address after: 430205 No.1 tanhu 2nd Road, Canglong Island, Jiangxia District, Wuhan City, Hubei Province Patentee after: CITIC Mobile Communication Technology Co.,Ltd. Address before: 430205 No.1 tanhu 2nd Road, Canglong Island, Jiangxia District, Wuhan City, Hubei Province Patentee before: Wuhan Hongxin Technology Development Co.,Ltd. |