CN119631250A - Multiband antenna with highly integrated cross-polarized dipole radiating elements - Google Patents
Multiband antenna with highly integrated cross-polarized dipole radiating elements Download PDFInfo
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- CN119631250A CN119631250A CN202380057588.1A CN202380057588A CN119631250A CN 119631250 A CN119631250 A CN 119631250A CN 202380057588 A CN202380057588 A CN 202380057588A CN 119631250 A CN119631250 A CN 119631250A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
- H01Q21/26—Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre
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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
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/108—Combination of a dipole with a plane reflecting surface
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/062—Two dimensional planar arrays using dipole aerials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
- H01Q5/42—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements using two or more imbricated arrays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
- H01Q5/48—Combinations of two or more dipole type antennas
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The multi-band antenna includes a relatively low-band cross-dipole radiating element including first through fourth radiating arms, and first through fourth relatively high-band cross-dipole radiating arms in respective first through fourth openings within the first through fourth radiating arms. The first to fourth relatively high band cross dipole radiating arms and the first to fourth radiating arms of the relatively low band cross dipole radiating element are coplanar. The first isolation frame to the fourth isolation frame are respectively arranged in the first opening to the fourth opening. A dielectric substrate is provided on which (i) the first to fourth relatively high-band cross-dipole radiating arms, (ii) first to fourth radiating arms of the relatively low-band cross-dipole radiating element, and (iii) the first to fourth isolation frames within the first to fourth openings, respectively, are patterned as metallized traces.
Description
Technical Field
The present invention relates generally to cellular communication systems and, more particularly, to Base Station Antennas (BSAs) utilized in cellular and other communication systems.
Background
Cellular communication systems are well known in the art. In cellular communication systems, a geographical area is typically divided into a series of areas called "cells" that are served by corresponding base stations. A base station may include one or more base station antennas configured to provide two-way radio frequency ("RF") communication with mobile users within a cell served by the base station. In many cases, each base station is divided into "sectors". In the perhaps most common configuration, a hexagonally shaped cell is divided into three 120 ° sectors, and each sector is served by one or more base station antennas having an azimuthal half-power beam width (HPBW) of approximately 65 °. Typically, the base station antennas are mounted on towers or other elevated structures, wherein a radiation pattern (also referred to herein as an "antenna beam") is generated by the outwardly directed base station antennas. Base station antennas are typically implemented as linear or planar phased arrays of radiating elements.
To accommodate the increasing cellular traffic, cellular operators have increased cellular services in various new frequency bands. While in some cases a so-called "wideband" or "ultra-wideband" linear array of radiating elements may be used to provide service in multiple frequency bands, in other cases a different linear array (or planar array) of radiating elements must be used to support service in different frequency bands. In the early days of cellular communications, each linear array was typically implemented as a separate base station antenna.
As the number of frequency bands has proliferated, and as sector divisions have become more prevalent (e.g., dividing a cell into six, nine, or even twelve sectors), the number of base station antennas deployed at a typical base station has increased significantly. However, there are often limitations to the number of base station antennas that can be deployed at a given base station due to, for example, local zone regulations and/or weight and wind load constraints of the antenna tower. In order to increase the capacity without further increasing the number of base station antennas, so-called multiband base station antennas have been introduced in recent years, wherein a plurality of linear arrays of radiating elements are included in a single antenna. A very common multi-band base station antenna design is an RVV antenna that includes one linear array of "low band" radiating elements for providing service in some or all of the 694-960 MHz bands (commonly referred to as "R bands") and two linear arrays of "high band" radiating elements for providing service in some or all of the 1695-2690 MHz bands (commonly referred to as "V bands"). These linear arrays are mounted in a side-by-side fashion.
There is also great interest in R2V4 base station antennas, which refers to base station antennas having two linear arrays of low band radiating elements and four linear arrays of high band radiating elements. However, R2V4 antennas are challenging to implement in a commercially acceptable manner because low-band radiating elements at least 200mm wide are typically required to achieve a 65 ° azimuth HPBW antenna beam in the low-band. When two low-band linear arrays are placed side by side with two high-band linear arrays disposed therebetween and the other two high-band linear arrays are disposed outside the two low-band linear arrays, then the base station antenna may have a width of about 600-760 mm. Such large antennas may have very high wind loads, may be very heavy, and/or may be expensive to manufacture. Operators will prefer base station antennas with narrower widths based on higher degrees of multiband array integration.
Disclosure of Invention
A highly integrated multi-band antenna according to an embodiment of the present invention includes (i) a first dipole radiating element having a first pair of radiating arms extending in front of an underlying reflector, and (ii) a second dipole radiating element having a second pair of radiating arms extending within an opening (e.g., closed loop) in a first radiating arm of the first pair of radiating arms. In accordance with some of these embodiments, there is also provided a conductive (and "floating") isolation frame surrounding the second pair of radiating arms, and the first and second pairs of radiating arms being coplanar. In addition, the first and second pairs of radiating arms and the isolation frame may be patterned on a front-facing surface of a dielectric substrate (e.g., a PCB board). The first radiating arm of the first pair of radiating arms and the conductive isolation frame may also be configured as a polygonal (e.g., rectangular) ring.
According to further embodiments, a multi-band antenna may include (i) a dipole radiating element having a first radiating arm and a second radiating arm extending forward of an underlying reflector, (ii) a first cross-polarized dipole radiating element having a pair of radiating arms extending within openings in the first radiating arm, (iii) a second cross-polarized dipole radiating element having a pair of radiating arms extending within openings in the second radiating arm, and (iv) a first isolation frame surrounding the pair of radiating arms of the first cross-polarized dipole radiating element and extending within the openings in the first radiating arm. In addition, the first and second radiating arms, the pair of radiating arms of the first cross-polarized dipole radiating element, and the first isolation frame are patterned as coplanar metal traces on a front-facing surface of a dielectric substrate. Furthermore, in some of these embodiments, the forward facing surface of the reflector may have a first region that is spatially closer to the radiating arms of the first cross-polarized radiating element and the radiating arms of the second cross-polarized radiating element than a second region that extends opposite the first radiating arm and the second radiating arm, thereby functioning as a Frequency Selective Surface (FSS).
According to a further embodiment of the invention, a multiband antenna comprises a relatively low-band cross-dipole radiating element comprising first to fourth radiating arms, and first to fourth relatively high-band cross-dipole radiating arms extending within respective first to fourth openings in the first to fourth radiating arms. In some of these embodiments, the first to fourth relatively high-band cross-dipole radiating arms and the first to fourth radiating arms of the relatively low-band cross-dipole radiating element are coplanar. In addition, to improve the electrical characteristics of the multiband antenna and provide a degree of stealth to the relatively low-band cross-dipole radiating element, first through fourth "electrically floating" isolation frames may be disposed within the first through fourth openings, respectively. Further, the first through fourth radiating arms of the relatively low-band cross-dipole radiating element (e.g., operating in the frequency range of 694 MHz to 960 MHz) may operate to provide stealth relative to the radiation provided by the first through fourth relatively high-band cross-dipole radiating arms (e.g., operating in the frequency range of 1695 MHz to 2690 MHz).
According to further aspects of these embodiments, a dielectric substrate (e.g., a PCB board) may be provided on which (i) radiating arms of a first relatively high-band cross-dipole radiating element to radiating arms of a fourth relatively high-band cross-dipole radiating element, (ii) first radiating arms to fourth radiating arms of the relatively low-band cross-dipole radiating element, and (iii) the first isolation frame to the fourth isolation frame within the first opening to the fourth opening, respectively, are patterned as metallized traces. Also, in further embodiments, this dielectric substrate may be supported by a feed stem that extends in front of the underlying reflector. The front facing surface of the reflector may also have a first region (e.g., a floating "grounded" box) that is spatially closer to the first to fourth relatively high-band cross-dipole radiating arms relative to a "grounded" second region that extends opposite the first to fourth radiating arms of the relatively low-band cross-dipole radiating element. In addition, the first (second, third, and fourth) isolation frames may be spatially closer to an outer periphery of the first (second, third, and fourth) relatively high-band cross-dipole radiating arms with respect to an inner periphery of the first (second, third, and fourth) relatively low-band cross-dipole radiating elements.
Drawings
Fig. 1A is a plan view of a multi-band antenna according to an embodiment of the present invention.
Fig. 1B is a side view of the multiband antenna of fig. 1A including a "grounded" planar box positioned behind a relatively high-band cross-dipole radiating arm.
Fig. 1C is a perspective view of a quadrilateral arrangement of the "grounded" planar box illustrated by fig. 1B.
Fig. 2A is a front perspective view of a multiband antenna with a feed stalk according to an embodiment of the invention.
Fig. 2B is a rear perspective view of the multi-band antenna of fig. 2A.
Fig. 3 is a plan view of a base station antenna utilizing multiple columns of the multi-band antenna of fig. 1A (integrated with relatively high-band radiating elements) in accordance with an embodiment of the present invention.
Fig. 4A is a perspective view of an array of modified "grounded" planar boxes with cutouts that may be used in the multiband antenna of fig. 2A-2B, according to an embodiment of the invention.
Fig. 4B is a perspective view of an array of modified "grounded" planar boxes with cutouts that may be used in the multiband antenna of fig. 2A-2B, according to an embodiment of the invention.
Fig. 5A-5D are plan views of sheet metal reflector segments that may be used to form a Frequency Selective Surface (FSS) of a reflector in accordance with an embodiment of the present invention.
Detailed Description
The present invention will now be described more fully with reference to the accompanying drawings, in which preferred embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like reference numerals refer to like elements throughout.
It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present invention.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes," "including" and/or variations thereof, when used in this specification, specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. Conversely, the term "consisting of" when used in this specification means that the feature, step, operation, element, and/or component is recited, and additional features, steps, operations, elements, and/or components are excluded.
Unless otherwise defined, 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. 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 relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Referring now to fig. 1A-1C, a multi-band antenna 100 according to an embodiment of the present invention is shown to include a relatively low-band cross-dipole radiating element 10, and first through fourth relatively high-band cross-dipole radiating arms 20a, 20b, 20C, 20d associated with a quadrilateral arrangement of first through fourth relatively high-band radiating elements 20, respectively. As shown, the relatively low band cross dipole radiating element 10 includes first and third polygonal radiating arms 10a, 10c associated with a first dipole radiating element (e.g., +45 o), and second and fourth polygonal radiating arms 10b associated with a second dipole radiating element (e.g., -45 o), 10d. In addition, the first to fourth relatively high-band cross-dipole radiating arms 20a, 20b, 20c, 20d are positioned within the first to fourth openings 12 within the first to fourth radiating arms 10a, 10b, 10c, 10d, respectively, along with the corresponding first to fourth "electrically floating" isolation frames 14a, 14b, 14c, 14 d. Advantageously, these isolation frames 14a, 14b, 14c, 14d, which may be spatially closer to the relatively high band cross-dipole radiating arms 20a, 20b, 20c, 20d relative to the relatively low band cross-dipole radiating arms 10a, 10b, 10c, 10d, may operate to improve the electrical characteristics (e.g., beam pattern, cross-band isolation) of the relatively low band radiating elements and the relatively high band radiating elements 10, 20, and provide a degree of stealth to the relatively low band cross-dipole radiating elements 10. The size of the isolation frames 14a-14d may also affect impedance matching with corresponding ones of the high-band cross-dipole radiating arms 20a, 20b, 20c, 20d, but the spacing therebetween should be sufficient to inhibit strong coupling by slightly greater than the spacing between each of the four generally square radiating arms and the corresponding ones of the high-band cross-dipole radiating arms 20a, 20b, 20c, 20 d. While not wishing to be bound by any particular embodiment, the four radiating arms 10a, 10b, 10c, 10d of the relatively low-band cross-dipole radiating element 10 may be configured and dimensioned to operate in a frequency range of about 694 MHz to about 960 MHz, while the first to fourth relatively high-band cross-dipole radiating arms 20a, 20b, 20c, 20d may be configured and dimensioned to operate in a frequency range of about 1695 MHz to about 2690 MHz, however, other frequency bands and frequency ranges are also possible.
As best shown by fig. 1A-1B, a planar substrate 30, such as a dielectric Printed Circuit Board (PCB), is provided and the first through fourth radiating arms 10a, 10B, 10c, 10d, the first through fourth cross dipole radiating arms 20a, 20B, 20c, 20d and the first through fourth isolation frames 14a, 14B, 14c, 14d are patterned as metallized traces on the front facing surface of the substrate 30. In particular, the first through fourth radiating arms 10a, 10b, 10c, 10d and the first through fourth isolation frames 14a, 14b, 14c, 14d may be patterned as rectangular metal loops, while the first through fourth relatively high-band cross-dipole radiating arms 20a, 20b, 20c, 20d may be patterned as having a generally rectangular outer perimeter with square corner patches 22 and cross-shaped (and inwardly directed) arm extensions 24 within each radiating arm. However, other configurations of the radiating arms are also possible according to other embodiments of the present invention. In addition, crisscrossed metal jumpers 32, 34 on the front-facing surface of the substrate 30 may be used for analog modeling/testing, but are otherwise omitted from the commercial embodiment.
The multi-band antenna 100 may also be provided with a hybrid reflector 40 extending opposite the rearward facing surface of the substrate 30, as shown by fig. 1B-1C. This hybrid reflector 40 is shown as a quadrilateral arrangement including a planar ground plane reflector 42 and conductive boxes 44a-44d (or raised sheet metal segments) that may be mounted to extend more closely adjacent to the rearward facing surface of the substrate 30. In particular, each box 44a, 44b, 44c, 44d may extend radially opposite and below a corresponding arrangement of high-band cross-dipole radiating arms 20a, 20b, 20c, 20d, respectively. In some embodiments, these boxes 44a-44D may be configured to function as three-dimensional (3D) electrically "floating" ground plane segments that are spatially closer to the substrate 30 relative to the ground plane reflector 42 such that a first region of the hybrid reflector 40 is spatially closer to the first to fourth relatively high-band cross-dipole radiating arms 20a, 20b, 20c, 20D relative to a "ground" second region that extends opposite the first to fourth radiating arms 10a, 10b, 10c, 10D.
Furthermore, each of the cassettes 44a-44d may have hardware and apertures (not shown) configured therein that support vertical routing of feed signal lines (e.g., 2x coaxial cable, etc.) from adjacent planar reflectors 42 to the substrate 30 and corresponding feed signal traces associated with the relatively high-band cross-dipole radiating arms 20a, 20b, 20c, 20 d. For example, in some of these embodiments, the outer conductor of each of a pair of coaxial cables (associated with each of the four high-band radiating elements) may be electrically connected or otherwise sufficiently coupled to a corresponding one of the four boxes 44a, 44b, 44c, 44d, which may be held electrically "floating" relative to a corresponding one of the first through fourth radiating arms 10a, 10b, 10c, 10d (and to each other). According to further embodiments, the boxes 44a, 44b, 44c, 44d may be provided with slots or cutouts (not shown) to enhance their Frequency Selective Surface (FSS) and stealth characteristics, and may have lateral dimensions corresponding to (or greater than) the lateral dimensions of the isolation frames 14a-14d but smaller than the lateral dimensions of the first through fourth radiating arms 10a, 10b, 10c, 10d (e.g., to prevent excessive coupling therebetween).
Furthermore, as shown by fig. 2A-2B, the vertical feed signal routing associated with the relatively low band cross dipole radiating element 10 may be provided by a conventional feed stalk 50 that extends in front of (and possibly through) the underlying ground plane reflector 42 (see, e.g., fig. 1B). In alternative embodiments of the present invention, this feed handle 50 may be modified to include additional signal routing (not shown) to the feed signal traces associated with the relatively high band cross dipole radiating arms 20a, 20b, 20c, 20 d. Also, as best shown by fig. 2B, centrally located corners may be omitted from the quadrilateral arrangement of the conductive boxes 44a '-44d' in order to accommodate the lateral dimensions of the vertical feed handle 50.
Referring now to fig. 3, there is shown a relatively narrow Base Station Antenna (BSA) 300 comprising three rows and two side-by-side of the multi-band antenna 100 of fig. 1A-1C and 2A-2B. Within each column, three separate rows of relatively high band radiating elements 20 (i.e., excluding the low band) are also provided with an underlying "grounded" planar box (not shown). Advantageously, the use of the multi-band antenna 100 enables the BSA 300 to fit within a narrower housing (not shown) while still maintaining relatively high cross-band isolation.
Finally, as shown by fig. 4A-4B, the "grounded" planar boxes 44A-44d of fig. 1C may be modified to include corner "cuts" 46 of different sizes to improve high-band isolation between the relatively high-band cross-dipole radiating elements 20 within each multi-band antenna 100. In addition, as shown by fig. 5A-5D, sheet metal reflector segments 52a, 52b, 52c, and 52D having cutouts of varying shapes may be used to form the Frequency Selective Surface (FSS) of the reflector, with each planar segment (52 a, 52b, 52c, or 52D) replacing a raised "grounded" planar box 44a-44D, and with each cutout including a centrally located and generally polygonal opening 54a and four radially extending openings 54b (e.g., arrow-shaped, Y-shaped, V-shaped) directed toward the four corners of each segment. Furthermore, in alternative embodiments, the sheet metal reflector segments 52a, 52b, 52c, and 52d may be configured using patterned metallization (single-sided or double-sided) on a planar dielectric substrate (e.g., a PCB board).
In the drawings and specification, there have been disclosed typical preferred embodiments of the invention and, although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation, the scope of the invention being set forth in the following claims.
Claims (25)
1. An antenna, comprising:
A first dipole radiating element having a first pair of radiating arms extending in front of the reflector;
A second dipole radiating element having a second pair of radiating arms extending within openings in a first radiating arm of the first pair of radiating arms, and
A conductive isolation frame surrounding the second pair of radiating arms.
2. The antenna of claim 1, wherein the first pair of radiating arms and the second pair of radiating arms are coplanar.
3. The antenna of claim 1, wherein the first and second pairs of radiating arms and the isolation frame are coplanar.
4. The antenna of claim 3, wherein the first and second pairs of radiating arms and the isolation frame are patterned on a front-facing surface of a dielectric substrate.
5. The antenna of claim 3, wherein a first radiating arm of the first pair of radiating arms is configured as a rectangular loop.
6. The antenna of claim 5, wherein the conductive isolation frame is configured as a rectangular ring.
7. A multi-band antenna comprising:
A dipole radiating element including a first radiating arm and a second radiating arm extending in front of the reflector, and
A first cross-polarized dipole radiating element having a pair of radiating arms extending within an opening in the first radiating arm.
8. The antenna of claim 7, further comprising:
A first isolation frame surrounding a pair of radiating arms of the first cross-polarized dipole radiating element and extending within the opening in the first radiating arm.
9. The antenna of claim 7, further comprising:
a second cross-polarized dipole radiating element having a pair of radiating arms extending within openings in the second radiating arms.
10. The antenna of claim 8, wherein the first and second radiating arms, a pair of radiating arms of the first cross-polarized dipole radiating element, and the first isolation frame are patterned on a front-facing surface of a dielectric substrate.
11. The antenna defined in claim 8 wherein the first and second radiating arms, a pair of radiating arms of the first cross-polarized dipole radiating element and the first isolation frame are coplanar.
12. The antenna of claim 9, wherein the first and second radiating arms and the radiating arms of the first and second cross-polarized dipole radiating elements are coplanar, and wherein the front-facing surface of the reflector has a first region that is spatially closer to the radiating arms of the first and second cross-polarized radiating elements than a second region that extends opposite the first and second radiating arms.
13. The antenna of claim 12, wherein a forward facing surface of the reflector functions as a Frequency Selective Surface (FSS).
14. A multi-band antenna comprising:
A relatively low-band cross dipole radiating element including first through fourth radiating arms, and
First to fourth relatively high-band cross dipole radiating arms in respective first to fourth openings in the first to fourth radiating arms.
15. The antenna defined in claim 14 wherein the first to fourth relatively high-band cross-dipole radiating arms and the first to fourth radiating arms of the relatively low-band cross-dipole radiating element are coplanar.
16. The antenna of claim 15, further comprising first through fourth isolation frames within the first through fourth openings, respectively.
17. The antenna of claim 16, further comprising a dielectric substrate on which (i) the first to fourth relatively high-band cross-dipole radiating arms, (ii) first to fourth radiating arms of the relatively low-band cross-dipole radiating elements, and (iii) the first to fourth isolation frames within the first to fourth openings, respectively, are patterned as metallized traces.
18. The antenna of claim 17, wherein the dielectric substrate is supported by a feed stem extending in front of an underlying reflector, and wherein a forward facing surface of the reflector has a first region spatially closer to the first to fourth relatively high-band cross-dipole radiating arms relative to a second region extending opposite the first to fourth radiating arms of the relatively low-band cross-dipole radiating element.
19. The antenna of claim 18, wherein a forward facing surface of the reflector functions as a Frequency Selective Surface (FSS).
20. The antenna of claim 16, wherein the first isolation frame is spatially closer to an outer perimeter of the first relatively high band cross dipole radiating arm relative to an inner perimeter of a first radiating arm of the relatively low band cross dipole radiating element.
21. A multi-band antenna comprising:
a reflector;
A first relatively low-band radiating element comprising a first radiating arm extending forward of the reflector;
A second relatively high-band radiating element including a second radiating arm extending forward of the reflector coplanar with the first radiating arm, and
A frequency selective surface extending intermediate the forward facing surface of the reflector and the second radiating arm.
22. The antenna defined in claim 21 wherein the frequency selective surface comprises a conductive box that extends between the second relatively high-band radiating element and the reflector.
23. The antenna defined in claim 21 wherein the frequency selective surface comprises a planar substrate having a conductive surface thereon that faces the second relatively high-band radiating element.
24. The antenna of claim 21, wherein the frequency selective surface comprises a planar metal plate substrate.
25. The antenna defined in claim 23 wherein the conductive surface has a centrally located and generally polygonal opening therein and four radially extending openings directed toward four corners of the planar substrate.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US202263370523P | 2022-08-05 | 2022-08-05 | |
| US63/370,523 | 2022-08-05 | ||
| PCT/US2023/071389 WO2024030880A1 (en) | 2022-08-05 | 2023-08-01 | Multi-band antennas having highly integrated cross-polarized dipole radiating elements therein |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119631250A true CN119631250A (en) | 2025-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202380057588.1A Pending CN119631250A (en) | 2022-08-05 | 2023-08-01 | Multiband antenna with highly integrated cross-polarized dipole radiating elements |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN119631250A (en) |
| WO (1) | WO2024030880A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100526585B1 (en) * | 2002-05-27 | 2005-11-08 | 삼성탈레스 주식회사 | Planar antenna with circular and linear polarization. |
| FR2946806B1 (en) * | 2009-06-11 | 2012-03-30 | Alcatel Lucent | RADIANT ELEMENT OF MULTIBAND ANTENNA |
| US9276329B2 (en) * | 2012-11-22 | 2016-03-01 | Commscope Technologies Llc | Ultra-wideband dual-band cellular basestation antenna |
| US10770803B2 (en) * | 2017-05-03 | 2020-09-08 | Commscope Technologies Llc | Multi-band base station antennas having crossed-dipole radiating elements with generally oval or rectangularly shaped dipole arms and/or common mode resonance reduction filters |
| WO2020140130A2 (en) * | 2020-05-14 | 2020-07-02 | Futurewei Technologies, Inc. | Composite antenna element design and method for beamwidth control |
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2023
- 2023-08-01 CN CN202380057588.1A patent/CN119631250A/en active Pending
- 2023-08-01 WO PCT/US2023/071389 patent/WO2024030880A1/en active Application Filing
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| WO2024030880A1 (en) | 2024-02-08 |
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