CN109599666B - Bipolar antenna system - Google Patents
Bipolar antenna system Download PDFInfo
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- CN109599666B CN109599666B CN201811252576.1A CN201811252576A CN109599666B CN 109599666 B CN109599666 B CN 109599666B CN 201811252576 A CN201811252576 A CN 201811252576A CN 109599666 B CN109599666 B CN 109599666B
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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
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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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
- H01Q1/523—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between antennas of an array
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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
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
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Abstract
The invention provides a bipolar antenna system which comprises at least one antenna array, wherein each antenna array comprises at least one vertically polarized antenna unit and at least one horizontally polarized antenna unit which are arranged on the same plane. Wherein: the vertical polarization antenna unit and the horizontal polarization antenna unit respectively comprise a printed circuit board and at least one dipole antenna element etched on the printed circuit board, antenna connecting wires and antenna feed holes are also etched on the printed circuit board, and the dipole antenna elements are connected to the antenna feed holes after being connected in parallel through the antenna connecting wires. Compared with the antenna system in the prior art, the invention not only can simultaneously provide the horizontally polarized radio frequency link and the vertically polarized radio frequency link with the main beam radiation characteristic, but also can ensure that the coupling interference among the radio frequencies is kept at a lower level.
Description
Technical Field
The present invention relates to the field of antennas, and in particular, to a bipolar antenna system.
Background
Antenna systems are essential in the composition of communication systems. In existing wireless communication, a single antenna is used for a transmission source and a reception end, respectively. Physically, an antenna is an electrical device that provides interconversion of electrical energy and radio frequency electromagnetic waves, which are commonly used in wireless transmitters or receivers. When transmitting, the wireless transmitter sends an oscillating radio frequency current to the antenna, and the antenna converts the radio frequency current into electromagnetic waves to radiate the electromagnetic waves; upon reception, the antenna intercepts a portion of the electromagnetic wave energy to produce a small voltage, which is fed to the receiver for amplification.
An antenna is an essential component in all devices using radio. It is widely used in systems such as broadcasting, television, two-way communication, radar, cell phone, and satellite communication. It is also widely used in devices such as garage gate inhibition, wireless microphone, bluetooth device, wireless network card, baby monitor, commodity radio frequency identification tag, etc. Typically, the antenna is formed by an arrangement of metallic conductors and is electrically connected (typically via a transmission line) to the transmitter or receiver. The oscillating current, when transmitted to the antenna by the transmitter, generates an oscillating magnetic field around the antenna conductor, while the current itself generates an oscillating electric field around the antenna conductor. These time-varying fields are created in appropriate proportions and radiated into space by the antenna as moving transverse electromagnetic waves. In contrast, during reception, radio waves generate oscillating electric and magnetic fields in the antenna conductor, thereby generating an oscillating current.
It is well known that radiated rf energy in antenna systems has very unique polarization characteristics, depending on the geometry and directivity of the antenna. Generally, the polarization mode may be linear polarization or elliptical polarization. More specifically, linear polarization includes vertical polarization and horizontal polarization, and elliptical polarization includes a special circular polarization. In any case, the most basic polarization modes are vertical and horizontal polarization. All other polarization modes are formed by linear combination of the two simple polarization modes. For any transmit or receive mode of radio frequency transmission, if the transmit antenna and receive antenna are not polarization matched, the radio frequency energy will be lost and the communication quality will be degraded.
In the Wi-Fi field, the antenna system of the client is generally relatively simple and can only respond to linearly polarized radio frequency signals, and the linear polarization direction of the antenna of the general client (such as a communication device) is often unpredictable. Therefore, it is desirable for Wi-Fi service providers to provide both horizontally and vertically polarized rf links for each individual channel to establish a good rf connection with the client. In operation, if the main beam radiation characteristics of horizontal polarization and vertical polarization are basically the same, the requirements of the client can be met. Although it is not difficult to design an antenna system that provides both horizontally and vertically polarized radio frequency chains, it is not easy to design an antenna system that provides both horizontally and vertically polarized radio frequency chains with substantially identical main beam radiation characteristics and with a low level of coupling between the radio frequencies.
Chinese patent application No. 201310389188.9 discloses a dual polarized antenna system having the same main beam radiation characteristic. The antenna system includes a plurality of antenna elements, each antenna element including a horizontally polarized antenna and a vertically polarized antenna. Wherein: a horizontally polarized antenna and a vertically polarized antenna are formed on a printed circuit board, respectively, and the horizontally polarized antenna and the vertically polarized antenna are arranged orthogonally. Although the dual polarized antenna system can also provide radio frequency links with horizontal polarization and vertical polarization, the main beam radiation characteristics of the two polarized antennas are basically consistent. However, the antenna system has the following significant drawbacks: the horizontal polarization antennas and the vertical polarization antennas in the antenna unit are arranged orthogonally, so that the structure of the whole antenna system is complex and loose, and the coupling phenomenon between each horizontal polarization antenna and each vertical polarization antenna is obvious.
Therefore, there is a need for an improved dual-polarity antenna system that not only can simultaneously provide horizontally polarized and vertically polarized radio frequency links with similar main beam radiation characteristics, but also can keep coupling between each day and night low.
On the other hand, with the demand of network development, the usage and demand of 5GHz channels increases day by day. The 5GHz channel provides sufficient bandwidth to speed up the transmission of information and also increases the number of end users. If the number of 5GHz antennas in an AP (Access Point, i.e. wireless Access Point) can be increased, the multiplication of the AP performance can be more prominent. However, the increase of the number of the antennas will bring interference caused by coupling between the antennas. How to improve the gain of the antenna and reduce the coupling between the antennas is also an urgent problem to be solved in the design of the antenna in 5GHz communication. Therefore, in order to meet the requirement of 5GHz communication, ensuring high gain of the radio frequency link is also a problem to be solved by the antenna system.
Disclosure of Invention
This section summarizes some aspects of the present disclosure and briefly introduces some preferred embodiments. Simplifications or omissions in this section as well as the description in the abstract or the title may be made to avoid obscuring the purpose of this section, the abstract or the title. Such simplifications or omissions are not intended to limit the scope of the present disclosure.
In order to solve the above technical problems of the antenna system in the prior art, the present invention provides a dual-polarity antenna system, which not only can simultaneously provide horizontally polarized and vertically polarized radio frequency links having the same or similar main beam radiation characteristics, but also can ensure that coupling interference between antennas is kept at a low level. The specific technical scheme of the invention is as follows:
a dual-polarity antenna system, comprising:
at least one antenna array comprising at least one vertically polarized antenna element and at least one horizontally polarized antenna element arranged on the same plane; wherein the content of the first and second substances,
the vertical polarization antenna unit comprises a first printed circuit board and at least one vertically polarized dipole antenna element arranged on the first printed circuit board, wherein a vertical polarization antenna connecting lead and a vertical polarization antenna feed hole are also arranged on the first printed circuit board, and each vertically polarized dipole antenna element is connected to the vertical polarization antenna feed hole after being connected in parallel through the vertical polarization antenna connecting lead;
the horizontally polarized antenna unit comprises a second printed circuit board and at least one horizontally polarized dipole antenna element arranged on the second printed circuit board, a horizontally polarized antenna connecting lead and a horizontally polarized antenna feed hole are further arranged on the second printed circuit board, and each horizontally polarized dipole antenna element is connected to the horizontally polarized antenna feed hole after being connected in parallel through the horizontally polarized antenna connecting lead.
The bipolar antenna system provided by the invention comprises at least one antenna array, wherein each antenna array comprises a vertical polarization antenna unit and a horizontal polarization antenna unit which are arranged on the same plane.
Compared with the antenna system in the prior art, the invention not only can simultaneously provide the horizontally polarized radio frequency link and the vertically polarized radio frequency link with the same or similar main beam radiation characteristics, but also can ensure that the coupling interference among the antennas is kept at a lower level.
Drawings
Fig. 1 is a schematic diagram of a vertically polarized antenna element, wherein: a is a front schematic view of the antenna unit, and b is a back schematic view of the antenna unit;
fig. 2 is a schematic diagram of a horizontally polarized antenna element, wherein: a is a front schematic view of the antenna unit, and b is a back schematic view of the antenna unit;
fig. 3 shows an antenna array comprising one vertically polarized antenna element of fig. 1 and one horizontally polarized antenna element of fig. 2, used in one embodiment of the present invention, which can be used to provide vertically polarized and horizontally polarized RF chains having substantially the same main beam radiation characteristics, wherein: a is a front schematic view of the antenna unit, and b is a back schematic view of the antenna unit;
fig. 4 shows an antenna array consisting of two vertically polarized antenna elements as shown in fig. 1 and two horizontally polarized antenna elements as shown in fig. 2, which may be used to provide vertically polarized and horizontally polarized RF chains having substantially the same main beam radiation characteristics, used in one embodiment of the present invention, wherein: a is a front schematic view of the antenna unit, and b is a back schematic view of the antenna unit;
fig. 5 is a radiation pattern of the vertically polarized antenna element of fig. 1;
fig. 6 is a radiation pattern of the horizontally polarized antenna element of fig. 2;
fig. 7 is a schematic diagram of coupling interference between the first vertically polarized antenna element and the first horizontally polarized antenna element of fig. 4;
fig. 8 is a schematic diagram of coupling interference between the first vertically polarized antenna element and the second vertically polarized antenna element of fig. 4;
fig. 9 is a schematic diagram of coupling interference between the first vertically polarized antenna element and the second horizontally polarized antenna element of fig. 4;
fig. 10 is a schematic diagram of coupling interference between the first horizontally polarized antenna element and the second vertically polarized antenna element of fig. 4;
fig. 11 is a schematic diagram of coupling interference between the first horizontally polarized antenna element and the second horizontally polarized antenna element of fig. 4;
fig. 12 is a schematic diagram of coupling interference between the second vertically polarized antenna element and the second horizontally polarized antenna element of fig. 4;
fig. 13 is a system block diagram of an antenna system according to one embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The detailed description of the present invention is presented primarily in terms of procedures, steps, logic blocks, processes, or other symbolic representations that directly or indirectly simulate operations of aspects of the present invention. Those skilled in the art will be able to utilize the description and illustrations herein to effectively introduce other skilled in the art to their working essence.
Reference herein to "one embodiment" or "an embodiment" means that a feature, structure, or characteristic described in connection with the embodiment can be included in at least an implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Furthermore, the order of blocks in a method, flowchart or functional block diagram representing one or more embodiments is not a fixed order, refers to any particular order, and is not limiting of the present invention.
Fig. 1 is a schematic diagram of a vertically polarized antenna unit 100, as shown in fig. 1, the vertically polarized antenna unit 100 includes a first printed circuit board and at least one vertically polarized dipole antenna element etched on the first printed circuit board, and each of the vertically polarized dipole antenna elements includes a first vertically polarized metal sheet and a second vertically polarized metal sheet etched on two sides of the first printed circuit board. As shown in a and B of fig. 1, in a specific embodiment, six vertically polarized dipole antenna elements are etched on the first printed circuit board, and accordingly, six first vertically polarized metal sheets (respectively identified as 101B, 102B, 103B, 104B, 105B, and 106B) are etched on the first side surface of the first printed circuit board, and six second vertically polarized metal sheets (respectively identified as 101A, 102A, 103A, 104A, 105A, and 106A) are symmetrically etched on the second side surface of the first printed circuit board, corresponding to the six first vertically polarized metal sheets one to one. Each of the first vertically polarized metal sheets and the corresponding second vertically polarized metal sheet (for example, the first vertically polarized metal sheet 101B and the second vertically polarized metal sheet 101A) are disposed vertically and symmetrically, so as to form a vertically polarized dipole antenna element, which is a basic antenna element forming the vertically polarized antenna unit 100.
It can be seen that each of the vertically polarized dipole antenna elements is formed by two metal sheets which are symmetrically opened up and down in the vertical direction, so that vertical polarization in a vertical square is realized.
In order to connect each of the vertically polarized dipole antenna elements in parallel into a complete interconnected antenna element, as shown in fig. 1a and B, three first vertically polarized antenna connection conductors (respectively identified as 107B, 108B, 109B) are provided on a first side surface of the first printed wiring board, three second vertical polarization antenna connecting leads (respectively identified as 107A, 108A and 109A) which are in one-to-one correspondence with the three first vertical polarization antenna connecting leads are symmetrically arranged on the second side surface of the first printed circuit board, and each first vertical polarization antenna connecting lead and the corresponding second vertical polarization antenna connecting lead (such as the first vertical polarization antenna connecting lead 107B and the second vertical polarization antenna connecting lead 107A) respectively form a balanced vertical polarization antenna connecting lead so as to connect each vertically polarized dipole antenna element in parallel to form a complete antenna unit. Wherein: vertically polarized antenna connecting wires 107B-107A connect four vertically polarized dipole antenna elements (102B-102A, 103B-103A, 105B-105A, and 106B-106A, respectively) together in parallel and perform the desired impedance matching, vertically polarized antenna connecting wires 108B-108A connect the remaining two vertically polarized dipole antenna elements (101B-101A, 104B-104A, respectively) together in parallel and perform the desired impedance matching, and vertically polarized antenna connecting wires 109B-109A connect vertically polarized antenna connecting wires 107B-107A and vertically polarized antenna connecting wires 108B-108A together and perform the desired impedance matching to form the final vertically polarized antenna unit 100.
In addition, a vertical polarization antenna feed hole 110 is etched on the first printed circuit board, and the vertical polarization antenna feed hole 100 is an excitation port of the vertical polarization antenna unit 100. As shown at B in fig. 1, in one particular embodiment, the vertically polarized antenna feed holes are disposed on the vertically polarized antenna connection conductors 109B-109A.
Fig. 2 is a schematic diagram of a horizontally polarized antenna unit 200, as shown in fig. 2, the horizontally polarized antenna unit 200 includes a second printed circuit board and at least one horizontally polarized dipole antenna element etched on the second printed circuit board, and each of the horizontally polarized dipole antenna elements includes a first horizontally polarized metal sheet and a second horizontally polarized metal sheet etched on two sides of the second printed circuit board. As shown in a and B of fig. 2, in a specific embodiment, six first horizontally polarized metal sheets (respectively identified as 201B, 202B, 203B, 204B, 205B, and 206B) are etched on the first side surface of the second printed wiring board, and six second horizontally polarized metal sheets (respectively identified as 201A, 202A, 203A, 204A, 205A, and 206A) corresponding to the six first horizontally polarized metal sheets one to one are symmetrically etched on the second side surface of the second printed wiring board. Each of the first horizontally polarized metal pieces and the corresponding second horizontally polarized metal piece (for example, the first horizontally polarized metal piece 201B and the second horizontally polarized metal piece 201A) are arranged symmetrically left and right in the horizontal direction, thereby constituting one horizontally polarized dipole antenna element, which is a basic antenna element constituting the horizontally polarized antenna unit 200.
It can be seen that each horizontally polarized dipole antenna element is composed of two metal sheets which are symmetrically opened in the horizontal direction, so that horizontal polarization in the horizontal direction is realized.
In order to connect each of said horizontally polarized dipole antenna elements in parallel into one complete interconnected antenna element, as shown in fig. 2a and B, three first horizontally polarized antenna connection conductors (designated 207B, 208B, 209B, respectively) are provided on the first side surface of the second printed wiring board, three second horizontally polarized antenna connecting wires (respectively marked as 207A, 208A and 209A) which are in one-to-one correspondence with the three first horizontally polarized antenna connecting wires are arranged on the second side surface of the second printed circuit board, and each first horizontally polarized antenna connecting wire and the corresponding second horizontally polarized antenna connecting wire (such as the first horizontally polarized antenna connecting wire 207B and the second horizontally polarized antenna connecting wire 207A) respectively form a group of balanced horizontally polarized antenna connecting wires so as to connect each horizontally polarized dipole antenna element in parallel to form a complete antenna unit. Wherein: horizontally polarized antenna connecting wires 207B-207A connect four horizontally polarized dipole antenna elements (202B-202A, 203B-203A, 205B-205A, and 206B-206A, respectively) together in parallel and perform the desired impedance matching, horizontally polarized antenna connecting wires 208B-208A connect the remaining two horizontally polarized dipole antenna elements (201B-201A, 204B-204A, respectively) together in parallel and perform the desired impedance matching, and horizontally polarized antenna connecting wires 209B-209A connect horizontally polarized antenna connecting wires 207B-207A and 208B-208A together and perform the desired impedance matching to form the final horizontally polarized antenna unit 200.
In addition, a horizontally polarized antenna feed hole 210 is disposed on the second printed circuit board, and the horizontally polarized antenna feed hole 210 is an excitation port of the horizontally polarized antenna unit 200. In one particular embodiment, the horizontally polarized antenna feed hole 210 is disposed on the horizontally polarized antenna connecting wires 209B-209A, as shown in fig. 2B.
It should be noted that, in order to meet the broadband requirement of 5G communication, in some embodiments, the shapes and the sizes of the first vertically polarized metal sheet, the second vertically polarized metal sheet, the first horizontally polarized metal sheet, and the second horizontally polarized metal sheet need to be designed accordingly, so that both the vertically polarized dipole antenna element and the horizontally polarized dipole antenna element are suitable for 5GHz broadband communication. How to design the shapes and sizes of the four polarized metal sheets to meet the requirement of 5GHz broadband communication is well known to those skilled in the art, and will not be described in detail here.
Fig. 5 and 6 show radiation patterns of the vertically polarized antenna unit 100 in fig. 1 and the horizontally polarized antenna unit 200 in fig. 2, respectively, and it can be seen that the gains of the vertically polarized antenna unit 100 and the horizontally polarized antenna unit 200 are both up to 12 dB. As can be seen from a comparison of fig. 5 and 6, the vertically polarized antenna element 100 and the horizontally polarized antenna element 200 can provide substantially similar or identical radiation characteristics. In other words, the vertically polarized antenna element 100 and the horizontally polarized antenna element 200 are essentially the same except that the polarization directions are arranged differently, one perpendicular to the horizontal plane and one parallel to the horizontal plane, and the two antenna arrays have substantially similar or identical main beam radiation characteristics.
Fig. 3 shows an embodiment of the present invention, which uses an antenna array 300 formed by a vertically polarized antenna unit 100 shown in fig. 1 and a horizontally polarized antenna unit 200 shown in fig. 2, to provide a vertically polarized and a horizontally polarized rf link with a main beam radiation characteristic. As shown in fig. 3, the antenna array 300 includes a printed circuit board, the vertically polarized antenna unit 100 and the horizontally polarized antenna unit 200 are both formed on the printed circuit board (i.e., the first printed circuit board and the second printed circuit board are integrally formed), and the vertically polarized antenna unit 100 and the horizontally polarized antenna unit 200 are isolated from each other. In other words, the vertically polarized antenna unit 100 and the horizontally polarized antenna unit 200 operate independently and can provide both vertically polarized and horizontally polarized radio frequency chains, where both radio frequency chains have the same or similar main beam radiation characteristics.
It can be seen that the vertically polarized antenna elements 100 and the horizontally polarized antenna elements 200 included in the antenna array 300 are formed on the same printed circuit board, in other words, the two antenna elements with different polarities are located on the same plane, which significantly simplifies the structure of the dipole antenna array and reduces the volume of the dipole antenna array.
Fig. 4 shows another embodiment of the present invention, which is an antenna array 400 formed by two vertically polarized antenna elements 100 shown in fig. 1 and two horizontally polarized antenna elements 200 shown in fig. 2. As shown in fig. 4, the antenna array 400 is actually formed by arranging two antenna arrays 300 shown in fig. 3 on the same plane, for example, two antenna arrays 300 may be mounted on a substrate in parallel. For convenience of description, two antenna array elements in one of the antenna arrays 300 are respectively labeled as a first vertically polarized antenna element 100-1 and a first horizontally polarized antenna element 200-1, and two antenna array elements in the other antenna array 300 are respectively labeled as a second vertically polarized antenna element 100-2 and a second horizontally polarized antenna element 200-2. Each vertical polarization antenna unit and each horizontal polarization antenna unit are isolated from each other. In other words, the first vertically polarized antenna unit 100-1, the second vertically polarized antenna unit 100-2, the first horizontally polarized antenna unit 200-1, and the second horizontally polarized antenna unit 200-2 operate independently and can provide vertically polarized and horizontally polarized radio frequency links simultaneously, wherein the four radio frequency links have the same or similar main beam radiation characteristics.
As shown in fig. 7 to 12, schematic diagrams of coupling interference between two antenna array units in the antenna array 400 are shown, where: figure 7 shows a schematic diagram of the coupling interference between the first vertically polarized antenna element 100-1 and the first horizontally polarized antenna element 200-1, figure 8 shows a schematic diagram of coupling interference between a first vertically polarized antenna element 100-1 and a second vertically polarized antenna element 100-2, figure 9 shows a schematic diagram of the coupling interference between the first vertically polarized antenna element 100-1 and the second horizontally polarized antenna element 200-2, figure 10 shows a schematic diagram of coupling interference between a first horizontally polarized antenna element 200-1 and a second vertically polarized antenna element 100-2, figure 11 shows a schematic diagram of coupling interference between a first horizontally polarized antenna element 200-1 and a second horizontally polarized antenna element 200-2, fig. 12 shows a schematic diagram of coupling interference between the second vertically polarized antenna element 100-2 and the second horizontally polarized antenna element 200-2.
As can be seen from fig. 7 to 12, the coupling interference between each two antenna units is lower than-30 dB.
Of course, in other embodiments, other numbers of vertically polarized antenna elements 100 and horizontally polarized antenna elements 200 may be selected, and these antenna array elements may be arranged on the same plane in other arrangements to construct large antenna arrays with other structures. At any time, the vertically polarized antenna elements and the horizontally polarized antenna elements included in the antenna arrays are independent from each other, and can simultaneously provide two radio frequency chains with horizontal polarization and vertical polarization, wherein the two radio frequency chains have basically the same or similar main beam radiation characteristics.
Fig. 13 is a system block diagram of an antenna system 500 for use in a communication device, such as a wireless router, in accordance with one embodiment of the present invention. The antenna system 500 may be mounted within the same package. As shown in fig. 13, the antenna system 500 includes a plurality of antenna elements 500-1, …, 500-N. As described above, the antenna elements 500-1, …, 500-N are arranged on the same plane according to a predetermined arrangement. Each antenna unit includes at least one vertically polarized antenna unit and one horizontally polarized antenna unit (which may be the vertically polarized antenna unit 100 and the horizontally polarized antenna unit 200 described above). Of course, the antenna system 500 is used within a base unit to provide wireless access to one wireless device, and may also provide wireless access to multiple wireless devices.
When the antenna system 500 communicates with another communication device 600 (e.g., a notebook computer), the vertically polarized antenna unit and the horizontally polarized antenna unit therein operate simultaneously to exchange radio frequency signals with the communication device 600. The type of antenna of the communication device 600 may be detected when the antenna system 500 receives radio frequency signals through vertically polarized antenna elements or horizontally polarized antenna elements. To avoid obscuring the focus of the present invention, no detailed method of how to detect signal strength from the antenna, etc., is provided herein and those skilled in the art will be familiar with such solutions.
According to an embodiment of the present invention, when it is detected that the communication device 600 is configured with a vertically polarized antenna, it is not necessary to operate the horizontally polarized antenna elements of the antenna system 500. Similarly, when it is detected that the communication device 600 is configured with a horizontally polarized antenna, it is not necessary to operate the vertically polarized antenna elements of the antenna system 500. It is assumed that the feedback signal 800 is derived from detection information (e.g., by signal detection or measurement circuitry) that indicates which polarized antenna element may better maintain the wireless link between the device equipped with the antenna system 500 and the communication apparatus 304. Either the vertically polarized antenna elements or the horizontally polarized antenna elements are controllably energized by the rf module 700.
According to another embodiment of the present invention, the antenna of the communication device 600 may not be able to fully detect whether the bottom is the vertically polarized antenna or the horizontally polarized antenna more suitable for communication therebetween. Based on a static or dynamic ratio configuration determined from the radio frequency signals between the antenna system 500 and the communication device 600, the radio frequency module 700 may be configured to partially excite a horizontally polarized antenna element while fully exciting the vertically polarized antenna element.
The invention has been described above with a certain degree of particularity. It will be understood by those of ordinary skill in the art that the description of the embodiments is merely exemplary and that all changes that come within the true spirit and scope of the invention are desired to be protected. The scope of the invention is defined by the appended claims rather than by the foregoing description of the embodiments.
Claims (11)
1. A dual-polarity antenna system, comprising:
at least one antenna array comprising at least one vertically polarized antenna element and at least one horizontally polarized antenna element; wherein the content of the first and second substances,
the vertical polarization antenna unit comprises a first printed circuit board and at least one vertically polarized dipole antenna element arranged on the first printed circuit board, wherein a vertical polarization antenna connecting lead and a vertical polarization antenna feed hole are also arranged on the first printed circuit board, and each vertically polarized dipole antenna element is connected to the vertical polarization antenna feed hole after being connected in parallel through the vertical polarization antenna connecting lead;
the horizontally polarized antenna unit comprises a second printed circuit board and at least one horizontally polarized dipole antenna element arranged on the second printed circuit board, a horizontally polarized antenna connecting lead and a horizontally polarized antenna feed hole are also arranged on the second printed circuit board, and each horizontally polarized dipole antenna element is connected to the horizontally polarized antenna feed hole after being connected in parallel through the horizontally polarized antenna connecting lead;
the vertically polarized dipole antenna element comprises a first vertically polarized metal sheet and a second vertically polarized metal sheet which are respectively arranged at two sides of the first printed circuit board, and the first vertically polarized metal sheet and the corresponding second vertically polarized metal sheet are vertically and symmetrically arranged in the vertical direction;
the horizontally polarized dipole antenna element comprises a first horizontally polarized metal sheet and a second horizontally polarized metal sheet which are respectively arranged at two sides of the second printed circuit board, and the first horizontally polarized metal sheet and the corresponding second horizontally polarized metal sheet are symmetrically arranged at the left and right in the horizontal direction;
the vertically polarized antenna unit and the horizontally polarized antenna unit are isolated from each other, the number of the vertically polarized dipole antenna elements included in the vertically polarized antenna unit is equal to the number of the horizontally polarized dipole antenna elements included in the horizontally polarized antenna unit, and the vertically polarized antenna unit and the horizontally polarized antenna unit have the same main beam radiation characteristic;
the vertical polarization antenna connecting lead comprises a first vertical polarization antenna connecting lead and a second vertical polarization antenna connecting lead which are respectively arranged at two sides of the first printed circuit board, each first vertical polarization metal sheet is connected to the vertical polarization antenna feed hole after being connected in parallel through the first vertical polarization antenna connecting lead, and each second vertical polarization metal sheet is connected to the vertical polarization antenna feed hole after being connected in parallel through the second vertical polarization antenna connecting lead;
the horizontal polarization antenna connecting lead comprises a first horizontal polarization antenna connecting lead and a second horizontal polarization antenna connecting lead which are respectively arranged on two sides of the second printed circuit board, each first horizontal polarization metal sheet is connected to the horizontal polarization antenna feed hole after being connected in parallel through the first horizontal polarization antenna connecting lead, and each second horizontal polarization metal sheet is connected to the horizontal polarization antenna feed hole after being connected in parallel through the second horizontal polarization antenna connecting lead.
2. The antenna system of claim 1, further comprising:
a substrate;
the at least one antenna array is arranged in a predetermined geometric pattern and on the substrate, wherein either vertically polarized antenna elements or horizontally polarized antenna elements in each of the antenna arrays are excited according to a type of antenna indicative of a communication device in communication with the antenna system.
3. The antenna system of claim 1, wherein the antenna system comprises at least two antenna arrays.
4. The antenna system of claim 1, wherein the first printed wiring board and the second printed wiring board are integrally formed.
5. The antenna system of claim 1, wherein said antenna system comprises at least two antenna arrays, each of said antenna arrays being functionally independent of each other and providing vertically polarized and horizontally polarized radio frequency links having substantially the same main beam radiation characteristics.
6. The antenna system of claim 1 wherein said antenna array is selectively excited to form said antenna pattern.
7. The antenna system of claim 1, wherein the desired antenna pattern is determined from signals measured from communication of a device equipped with the antenna system with another device.
8. The antenna system of claim 1, wherein the antenna system is disposed in a package.
9. The antenna system of claim 1, wherein the vertically polarized dipole antenna elements and the horizontally polarized dipole antenna elements are each broadband dipole antennas suitable for 5GHz broadband communication.
10. The antenna system of claim 1, wherein the vertically polarized antenna elements and the horizontally polarized antenna elements have a gain of up to 12 dB.
11. The antenna system of claim 1, wherein the antenna system is used within a base unit to provide wireless access to one or more wireless devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811252576.1A CN109599666B (en) | 2018-10-25 | 2018-10-25 | Bipolar antenna system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811252576.1A CN109599666B (en) | 2018-10-25 | 2018-10-25 | Bipolar antenna system |
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| CN109599666A CN109599666A (en) | 2019-04-09 |
| CN109599666B true CN109599666B (en) | 2021-05-14 |
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| CN111313153A (en) * | 2020-02-28 | 2020-06-19 | 维沃移动通信有限公司 | Antenna unit, antenna and electronic equipment |
| TWI723815B (en) * | 2020-03-23 | 2021-04-01 | 啟碁科技股份有限公司 | Wi-fi extender and associated antenna selection method |
| CN114069260B (en) * | 2020-08-07 | 2023-03-03 | 华为技术有限公司 | Antenna system and electronic equipment comprising same |
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| CN105161861B (en) * | 2015-09-28 | 2018-10-26 | 湖南华诺星空电子技术有限公司 | A kind of antenna assembly of frequency modulated continuous wave radar |
| CN205081241U (en) * | 2015-09-28 | 2016-03-09 | 湖南华诺星空电子技术有限公司 | Frequency modulation continuous wave radar's antenna device |
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| RU2156525C2 (en) * | 1998-11-27 | 2000-09-20 | Орлов Александр Борисович | Microstrip antenna array |
| CN104577323A (en) * | 2015-02-06 | 2015-04-29 | 西安电子科技大学 | Dual-frequency and dual-polarization antenna used for mobile communication base station |
| CN105846075A (en) * | 2016-05-26 | 2016-08-10 | 电子科技大学 | Miniaturized broadband planar dual-polarized antenna |
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