CN111446523A - High-integration phase shifter - Google Patents
High-integration phase shifter Download PDFInfo
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- CN111446523A CN111446523A CN202010363576.XA CN202010363576A CN111446523A CN 111446523 A CN111446523 A CN 111446523A CN 202010363576 A CN202010363576 A CN 202010363576A CN 111446523 A CN111446523 A CN 111446523A
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- phase shifter
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- 239000002184 metal Substances 0.000 claims abstract description 138
- 230000005540 biological transmission Effects 0.000 claims abstract description 49
- 239000000758 substrate Substances 0.000 claims description 4
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 2
- 230000010354 integration Effects 0.000 abstract description 6
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 241000270295 Serpentes Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/18—Phase-shifters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
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- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
Abstract
The invention relates to a high-integration phase shifter, which comprises a radio frequency transmission plate and a dielectric block, wherein the dielectric block is arranged on the radio frequency transmission plate in a sliding manner; the radio frequency transmission plate comprises a dielectric plate, a metal transmission strip line, a first grounding metal layer and a second grounding metal layer, wherein the first grounding metal layer and the second grounding metal layer are respectively attached to two corresponding sides of the dielectric plate and are electrically connected through a metalized through hole; a hollow area is arranged on the first grounding metal layer, the metal transmission strip line is attached to the dielectric plate and is positioned in the hollow area, and the metalized via hole is positioned outside the hollow area; the medium block comprises a medium base block and an incompletely-closed medium metal layer fixedly coated on the medium base block, one side of the medium metal layer is provided with an opening, the part of the medium base block corresponding to the opening is a medium matching surface, and the medium matching surface covers the metal transmission belt line; the dielectric matching surface can change the area of the covered metal transmission belt line along with the sliding of the dielectric block. The invention has the characteristics of high integration, miniaturization, light weight and low cost.
Description
Technical Field
The present invention relates to phase shifters, and more particularly, to a phase shifter with high integration.
Background
With the development of the communication industry, base stations continuously tend to be miniaturized, a phase shifter is a core element of an antenna of a base station with a downtilt angle adjusted electrically in the 4G era, and electric signals enter corresponding antenna channels after being subjected to power division and phase shifting through a phase shifting feeder to realize signal radiation. At present, the 5G era comes, and 5G mainstream Massive MIMO base station antennas also gradually require a function of adjusting the downtilt angle with electricity. However, compared with 4G, the 5G base station antenna has the characteristics of high frequency, small volume, high integration with other radio frequency communication devices and the like, and the phase shifter is difficult to be installed in the base station antenna as a single component. The existing phase shifter is integrated on an antenna feed power distribution network, but still needs to be covered by a metal cavity, so that the phase shifter not only has high processing complexity and increased weight burden, but also can cause intermodulation interference to the antenna, and cannot meet the requirements of the existing base station antenna.
Disclosure of Invention
The invention aims to provide a high-integration phase shifter, which meets the design requirements of high integration, miniaturization, light weight and low cost of the phase shifter on the premise of maintaining stable and reliable indexes.
In order to solve the above problems, the present invention provides a highly integrated phase shifter, which includes a radio frequency transmission plate and a dielectric block, wherein the dielectric block is slidably disposed on the radio frequency transmission plate;
the radio frequency transmission plate comprises a dielectric plate, a metal transmission strip line, a first grounding metal layer and a second grounding metal layer, wherein the first grounding metal layer and the second grounding metal layer are respectively attached to two corresponding sides of the dielectric plate and are electrically connected through a metalized through hole; a hollow area is arranged on the first grounding metal layer, the metal transmission belt line is attached to the dielectric plate and is positioned in the hollow area, and the metalized through hole is positioned outside the hollow area;
the dielectric block comprises a dielectric base block and an incompletely-closed dielectric metal layer fixedly coated on the dielectric base block, one side of the dielectric metal layer is provided with an opening, the part of the dielectric base block corresponding to the opening is a dielectric matching surface, and the dielectric matching surface covers the metal transmission strip line; the dielectric metal layer and the first grounding metal layer can generate relative sliding, and the contact surfaces of the dielectric metal layer and the first grounding metal layer are separated by an insulating medium; and a shielding cavity is formed between the dielectric metal layer and the first grounding metal layer, and the area of the metal transmission strip line covered by the dielectric matching surface can be changed along with the sliding of the dielectric block.
Preferably, the length and width of the second ground metal layer are respectively greater than the length and width of the hollow area.
Preferably, the metal transmission belt line is linear.
Preferably, the metal transmission strip line is a U-shaped line or a serpentine line.
Preferably, the metal transmission strip line is an unclosed line formed by at least two parallel matching sections.
Preferably, the width of the opening is not less than the width of the hollow area.
Preferably, the length of the dielectric metal layer is not less than the length of the dielectric substrate.
Preferably, the medium metal layer is a U-shaped groove structure with the opening formed in one side, and the medium base block is fixed in the U-shaped groove structure; the U-shaped groove structure comprises a groove bottom and two groove walls, the upper ends of the two groove walls are respectively and integrally connected with the groove bottom, the bottom ends of the two groove walls are respectively separated from the first grounding metal layer through the insulating medium, and the length and the width of the insulating medium are not smaller than those of the bottom ends of the groove walls.
Preferably, the groove walls are L type and include a vertical groove wall and a horizontal groove wall which are integrally connected, two ends of the vertical groove wall are respectively integrally connected with the groove bottom and the horizontal groove wall, the two horizontal groove walls are oppositely arranged at intervals, the bottom end of the horizontal groove wall is separated from the first grounding metal layer through the insulating medium, and the length and width of the insulating medium are respectively not less than the length and width of the bottom end of the horizontal groove wall.
Preferably, the surface of the insulating medium is smooth.
Compared with the prior art, the invention has the following technical effects:
the invention provides a high-integration phase shifter, which meets the design requirements of high integration, miniaturization, light weight and low cost of the phase shifter on the premise of maintaining stable and reliable indexes, and is beneficial to improving the third-order intermodulation index of an antenna by a welding-spot-free structure. The phase shifter provided by the invention has more obvious advantages when being applied to 5G Massive MIMO antennas with high frequency and narrow array spacing, greatly improves the index consistency of the phase shifter due to high integration and welding-point-free design, and is beneficial to realizing automatic assembly of the antennas.
Drawings
Fig. 1 is a schematic structural diagram of a highly integrated phase shifter according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a highly integrated phase shifter according to another embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a highly integrated phase shifter according to a third embodiment of the present invention
Fig. 4 is an exploded view of a radio frequency transmission plate provided in a preferred embodiment of the present invention;
FIG. 5 is a schematic diagram of a dielectric block according to a preferred embodiment of the present invention;
fig. 6 is an exploded view of a dielectric block provided in accordance with one embodiment of the present invention.
Detailed Description
The following detailed description is made with reference to the accompanying drawings, which illustrate an embodiment.
Referring to fig. 1 to 6, a highly integrated phase shifter includes a radio frequency transmission plate 1 and a dielectric block 2, where the dielectric block 2 is slidably disposed on the radio frequency transmission plate 1, and the dielectric block 2 is slidably disposed on the radio frequency transmission plate 1, which is a conventional technical means in the art, such as slidably disposed through a guide rail guide groove or slidably disposed through a support member, and the like, and the present invention is not limited thereto.
The radio frequency transmission plate 1 comprises a dielectric plate 13, a metal transmission strip line 11, a first ground metal layer 12 and a second ground metal layer 14, wherein the first ground metal layer 12 and the second ground metal layer 14 are respectively attached to two corresponding sides (shown as the upper side and the lower side of the dielectric plate 13) of the dielectric plate 13 and are electrically connected through metallized through holes 15, namely, the first ground metal layer 12, the dielectric plate 13 and the second ground metal layer 14 are respectively and correspondingly provided with a plurality of metallized through holes 15 which are communicated with each other, and the first ground metal layer 12 and the second ground metal layer 14 can be electrically connected through the metallized through holes 15; a hollow area 121 is arranged on the first ground metal layer 12, the metal transmission strip line 11 is attached to the dielectric plate 13 and located in the hollow area 121, and the metalized via 15 is located outside the hollow area 121.
The radio frequency transmission board 1 may be a printed board or an integrally injection-molded board, that is, the first ground metal layer 12, the metal transmission strip line 11, and the second ground metal layer 14 are all molded on the dielectric board 13 by a plastic-metal process, which is not particularly limited in the present invention, as long as the dielectric board 13, the metal transmission strip line 11, the first ground metal layer 12, and the second ground metal layer 14 are integrally disposed.
The dielectric block 2 comprises a dielectric base block 22 and an incompletely-closed dielectric metal layer 21 fixedly coated on the dielectric base block 22, one side of the dielectric metal layer 21 is open, a part of the dielectric base block 22 corresponding to the opening is a dielectric matching surface 221, the dielectric matching surface 221 is not coated by the dielectric metal layer 21, the dielectric matching surface 221 faces the metal transmission strip line 11, and the dielectric matching surface 221 covers the metal transmission strip line 11. Relative sliding can be generated between the dielectric metal layer 21 and the first ground metal layer 12, and the contact surfaces of the dielectric metal layer and the first ground metal layer are separated by the insulating medium 3, so that the dielectric metal layer and the first ground metal layer are prevented from directly contacting, and the purpose is to improve the third-order intermodulation index of the antenna. In this embodiment, the length and width of the overlapping region where the dielectric metal layer 21 contacts the first ground metal layer 12 are not greater than the length and width of the insulating dielectric 3, respectively, in order to ensure that the insulating dielectric 3 can sufficiently separate the dielectric metal layer 21 from the first ground metal layer 12. The areas of the dielectric metal layers 21 on both sides of the dielectric matching surface 221 are metal coupling areas 211, and the metal coupling areas 211 are separated from the first ground metal layer 12 by the insulating dielectric 3. The dielectric metal layer 21 and the first ground metal layer 12 form a shielding cavity in a coupling mode; the dielectric matching surface 221 may change an area covering the metal transmission strip line 11 as the dielectric block 2 slides.
In the invention, the dielectric block 2 slides on the radio frequency transmission plate 1, and the area of the dielectric matching surface 221 covering the metal transmission strip line 11 is changed to realize phase shift. Functionally, the semi-closed dielectric metal layer 21 and the first ground metal layer 12 on the radio frequency transmission plate 1 form a shielding cavity in a coupling manner, the position of the shielding cavity moves along with the sliding of the dielectric block 2, and the signal radiated by the metal transmission strip line 11 covered by the dielectric matching surface 221 is always closed in the shielding cavity.
The shape of the metal transmission strip line 11 is not limited in the invention, and the metal transmission strip line can be a transmission line with any shape. Referring to fig. 1 and 3, the metal transfer strip line 11 may be a straight line type; or U-shaped lines, S-shaped lines, wave shapes or snake shapes and the like; or an unclosed line formed by at least two parallel matching segments, such as a U-shaped line (see fig. 2).
The hollow-out region 121 of the first ground metal layer 12 may be a closed region, please refer to fig. 1 and fig. 4; or a semi-enclosed area, see fig. 2 and 3. In this embodiment, the shape of the metal transmission belt line 11 is preferably a straight line, and the hollow area 121 is a semi-closed area, that is, one end of the area is open.
In this embodiment, the second ground metal layer 14 has no hollow inside, and the length and width thereof are respectively greater than the length and width of the hollow area 121 of the first ground metal layer 12.
The invention does not limit how the medium metal layer 21 is fixedly coated on the medium base block 22, as long as the medium base block 22 and the medium metal layer 21 are in an integral structure and a structure without relative movement between the two is within the protection scope of the invention.
As an example, the dielectric substrate 22 and the dielectric metal layer 21 are formed by plastic-metal injection molding or plastic-dielectric surface plating.
As another embodiment, the dielectric metal layer 21 is a metal member, and the metal member and the dielectric base block 22 are combined together by an adhesive, in this embodiment, the metal member may be a thin-walled sheet metal member or a pultrusion section member.
As a third embodiment, referring to fig. 6, the dielectric metal layer 21 is a metal part, and the metal part is connected to the dielectric base block 22 in a snap-fit manner, that is, two corresponding sides of the dielectric base block 22 are respectively provided with a snap 222, the metal part is provided with a snap groove 212 installed in cooperation with the snap 222, and the two are mutually snap-fitted to form the dielectric block 2.
In this embodiment, the width of the opening of the dielectric metal layer 21 is not less than the width of the hollow area 121 of the first ground metal layer 12.
The length of the dielectric metal layer 21 is not less than the length of the dielectric substrate 22.
In this embodiment, the dielectric metal layer 21 is a U-shaped groove structure with the opening on one side, and the dielectric base block 22 is fixed in the U-shaped groove structure; the U-shaped groove structure comprises a groove bottom and two groove walls, the upper ends of the two groove walls are respectively and integrally connected with the groove bottom, the bottom ends of the two groove walls are respectively separated from the first grounding metal layer 12 through the insulating medium 3, and the length and the width of the insulating medium 3 are respectively not less than those of the bottom ends of the two groove walls. Relative sliding can be generated between the bottom end of the U-shaped groove structure and the first ground metal layer 12.
Furthermore, the groove walls are L type and comprise a vertical groove wall and a transverse groove wall which are integrally connected, two ends of the vertical groove wall are respectively and integrally connected with the groove bottom and the transverse groove wall, the two transverse groove walls are oppositely arranged at intervals, the bottom end of the transverse groove wall is separated from the first grounding metal layer 12 through the insulating medium 3, and the length and the width of the insulating medium 3 are respectively not less than those of the bottom end of the transverse groove wall.
The insulating medium 3 may be an insulating layer coated on the first ground metal layer 12 or the dielectric metal layer 21, such as a green layer of printed circuit board, or may be a separate insulating thin plate having a total thickness of less than 0.1mm and a uniform thickness. The surface of the insulating dielectric 3 is smooth to reduce the sliding friction between the dielectric metal layer 21 and the first ground metal layer 12.
According to the invention, the dielectric metal layer 21 and the dielectric base block 22 are integrated into one part, the number of parts of the phase shifter can be reduced to 2 (the radio frequency transmission plate 1 and the dielectric block 2), the antenna assembly efficiency can be improved through a highly integrated design, and the antenna layout is more flexible and simpler. The invention fully utilizes the effective length of the shielding to greatly reduce the size of the phase shifter, and compared with the conventional 4G phase shifter, the phase shifter has simpler structure, smallest and thinnest size and lightest overall weight. Especially, the antenna is applied to a high-frequency and very high-frequency 5 GMasseive MIMO antenna, the structural layout is more flexible, the assembly efficiency is higher, and the product cost is more advantageous.
Claims (10)
1. A high-integration phase shifter is characterized by comprising a radio frequency transmission plate and a dielectric block, wherein the dielectric block is arranged on the radio frequency transmission plate in a sliding mode;
the radio frequency transmission plate comprises a dielectric plate, a metal transmission strip line, a first grounding metal layer and a second grounding metal layer, wherein the first grounding metal layer and the second grounding metal layer are respectively attached to two corresponding sides of the dielectric plate and are electrically connected through a metalized through hole; a hollow area is arranged on the first grounding metal layer, the metal transmission belt line is attached to the dielectric plate and is positioned in the hollow area, and the metalized through hole is positioned outside the hollow area;
the dielectric block comprises a dielectric base block and an incompletely-closed dielectric metal layer fixedly coated on the dielectric base block, one side of the dielectric metal layer is provided with an opening, the part of the dielectric base block corresponding to the opening is a dielectric matching surface, and the dielectric matching surface covers the metal transmission strip line; the dielectric metal layer and the first grounding metal layer can generate relative sliding, and the contact surfaces of the dielectric metal layer and the first grounding metal layer are separated by an insulating medium; and a shielding cavity is formed between the metal layer and the first grounding metal layer, and the area of the metal transmission strip line covered by the dielectric matching surface can be changed along with the sliding of the dielectric block.
2. The phase shifter of claim 1, wherein the second ground metal layer has a length and a width greater than a length and a width of the hollowed-out region, respectively.
3. A highly integrated phase shifter according to claim 1 wherein the metal transmission line is linear.
4. The phase shifter of claim 1, wherein the metal transmission line is a U-shaped line or a serpentine line.
5. The phase shifter of claim 4, wherein the metal transmission line is an open line formed by at least two parallel matching sections.
6. The phase shifter of claim 1, wherein the width of the opening is not less than the width of the hollowed-out area.
7. The phase shifter of claim 1, wherein the dielectric metal layer has a length not less than a length of the dielectric base block.
8. The phase shifter of claim 1, wherein the dielectric metal layer is a U-shaped groove structure having the opening at one side, and the dielectric substrate is fixed in the U-shaped groove structure; the U-shaped groove structure comprises a groove bottom and two groove walls, the upper ends of the two groove walls are respectively and integrally connected with the groove bottom, the bottom ends of the two groove walls are respectively separated from the first grounding metal layer through the insulating medium, and the length and the width of the insulating medium are not smaller than those of the bottom ends of the groove walls.
9. The phase shifter of claim 1, wherein the slot wall is L type and comprises an integrally connected vertical slot wall and a horizontal slot wall, both ends of the vertical slot wall are integrally connected with the slot bottom and the horizontal slot wall respectively, two horizontal slot walls are oppositely arranged at intervals, the bottom end of the horizontal slot wall is separated from the first grounding metal layer by the insulating medium, and the length and width of the insulating medium are not less than those of the bottom end of the horizontal slot wall respectively.
10. A highly integrated phase shifter according to claim 1, wherein the surface of said insulating medium is smooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010363576.XA CN111446523A (en) | 2020-04-30 | 2020-04-30 | High-integration phase shifter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010363576.XA CN111446523A (en) | 2020-04-30 | 2020-04-30 | High-integration phase shifter |
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| Publication Number | Publication Date |
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| CN111446523A true CN111446523A (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010363576.XA Pending CN111446523A (en) | 2020-04-30 | 2020-04-30 | High-integration phase shifter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112751148A (en) * | 2020-12-24 | 2021-05-04 | 京信通信技术(广州)有限公司 | Phase shifter and electrically tunable antenna |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654470A (en) * | 2016-11-24 | 2017-05-10 | 西安华为技术有限公司 | Phase shifter |
| CN109638457A (en) * | 2019-01-30 | 2019-04-16 | 京信通信技术(广州)有限公司 | Antenna and its phase shift feeder equipment |
| CN109755696A (en) * | 2019-02-27 | 2019-05-14 | 东南大学 | A kind of wideband cavity phase shifter |
| CN109802234A (en) * | 2019-01-30 | 2019-05-24 | 京信通信技术(广州)有限公司 | Antenna for base station and its phase shift feeder equipment |
| CN212113967U (en) * | 2020-04-30 | 2020-12-08 | 上海安费诺永亿通讯电子有限公司 | High-integration phase shifter |
-
2020
- 2020-04-30 CN CN202010363576.XA patent/CN111446523A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654470A (en) * | 2016-11-24 | 2017-05-10 | 西安华为技术有限公司 | Phase shifter |
| CN109638457A (en) * | 2019-01-30 | 2019-04-16 | 京信通信技术(广州)有限公司 | Antenna and its phase shift feeder equipment |
| CN109802234A (en) * | 2019-01-30 | 2019-05-24 | 京信通信技术(广州)有限公司 | Antenna for base station and its phase shift feeder equipment |
| CN109755696A (en) * | 2019-02-27 | 2019-05-14 | 东南大学 | A kind of wideband cavity phase shifter |
| CN212113967U (en) * | 2020-04-30 | 2020-12-08 | 上海安费诺永亿通讯电子有限公司 | High-integration phase shifter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112751148A (en) * | 2020-12-24 | 2021-05-04 | 京信通信技术(广州)有限公司 | Phase shifter and electrically tunable antenna |
| CN112751148B (en) * | 2020-12-24 | 2022-01-28 | 京信通信技术(广州)有限公司 | Phase shifter and electrically tunable antenna |
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