CN111276815B - Millimeter wave dual circular polarization bidirectional data transmission module and device - Google Patents
Millimeter wave dual circular polarization bidirectional data transmission module and device Download PDFInfo
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- CN111276815B CN111276815B CN202010279698.0A CN202010279698A CN111276815B CN 111276815 B CN111276815 B CN 111276815B CN 202010279698 A CN202010279698 A CN 202010279698A CN 111276815 B CN111276815 B CN 111276815B
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- 230000010287 polarization Effects 0.000 title claims abstract description 48
- 230000005540 biological transmission Effects 0.000 title claims abstract description 47
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 22
- 230000009977 dual effect Effects 0.000 title claims abstract description 11
- 239000000758 substrate Substances 0.000 claims abstract description 50
- 230000005284 excitation Effects 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims description 16
- 230000015572 biosynthetic process Effects 0.000 description 16
- 238000003786 synthesis reaction Methods 0.000 description 16
- 238000005516 engineering process Methods 0.000 description 5
- 230000008054 signal transmission Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
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- 230000005672 electromagnetic field Effects 0.000 description 2
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- 238000002955 isolation Methods 0.000 description 1
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Classifications
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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
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/18—Waveguides; Transmission lines of the waveguide type built-up from several layers to increase operating surface, i.e. alternately conductive and dielectric layers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
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Abstract
本发明提供了一种毫米波双圆极化双向数传模块及装置，包括毫米波调制解调收发器、基片集成波导90度电桥、正交半模波导激励缝隙和正交模合成波导圆极化辐射器；基片集成波导90度电桥与毫米波调制解调收发器连接，正交半模波导激励缝隙和所述基片集成波导90度电桥连接，正交模合成波导圆极化辐射器和正交半模波导激励缝隙连接。本发明通过将毫米波调制解调收发器、基片集成波导90度电桥、正交半模波导激励缝隙和正交模合成波导圆极化辐射器集成在电路板上，达到较高的定向增益，通过较小电路尺寸实现短程超高速无线数字信号双向传输。
The present invention provides a millimeter wave dual circular polarization bidirectional data transmission module and device, including a millimeter wave modem transceiver, a substrate integrated waveguide 90 degree bridge, an orthogonal half-mode waveguide excitation slot and an orthogonal mode synthetic waveguide circular polarization radiator; the substrate integrated waveguide 90 degree bridge is connected to the millimeter wave modem transceiver, the orthogonal half-mode waveguide excitation slot is connected to the substrate integrated waveguide 90 degree bridge, and the orthogonal mode synthetic waveguide circular polarization radiator is connected to the orthogonal half-mode waveguide excitation slot. The present invention achieves a higher directional gain by integrating the millimeter wave modem transceiver, the substrate integrated waveguide 90 degree bridge, the orthogonal half-mode waveguide excitation slot and the orthogonal mode synthetic waveguide circular polarization radiator on a circuit board, and realizes short-range ultra-high-speed wireless digital signal bidirectional transmission through a smaller circuit size.
Description
Technical Field
The invention relates to the technical field of millimeter wave short-range digital transmission, in particular to a millimeter wave double-circular polarization bidirectional data transmission module and device.
Background
The wireless broadband digital communication technology has wide application in industrial application and daily life, the development of the Internet brings about numerous data services, and the demand for broadband wireless data transmission is also exponentially growing. Traditional wireless transmission technologies, such as Bluetooth, wiFi, zigbee and the like bring great convenience in daily life, but the bandwidths of the technologies are narrow, and the technologies are difficult to meet the requirements of some emerging broadband high-speed data transmission services, such as high-definition video streaming transmission applications of up to several Gbps, and meanwhile, the traditional technologies are low in frequency band, long in wavelength and difficult to arrange and transmit in some narrow space sizes.
Disclosure of Invention
The invention aims to provide a millimeter wave double-circular polarization bidirectional data transmission module and device, which integrate a millimeter wave receiving and transmitting circuit and a double-circular polarization antenna, and solve the problems of signal polarization alignment and stable transmission in a narrow space.
The application provides a millimeter wave double-circular polarization bidirectional data transmission module which comprises a millimeter wave modem transceiver, a substrate integrated waveguide 90-degree bridge, an orthogonal half-mode waveguide excitation gap and an orthogonal mode synthesis waveguide circular polarization radiator, wherein the substrate integrated waveguide 90-degree bridge is connected with the millimeter wave modem transceiver, the orthogonal half-mode waveguide excitation gap is connected with the substrate integrated waveguide 90-degree bridge, and the orthogonal mode synthesis waveguide circular polarization radiator is connected with the orthogonal half-mode waveguide excitation gap.
In an optional implementation manner of the first aspect, the millimeter wave modem transceiver further includes a transmitting circuit and a receiving circuit, where the transmitting circuit is configured to modulate the high-speed baseband digital signal into a millimeter wave digital signal and transmit the millimeter wave digital signal to the 90 degree bridge of the substrate integrated waveguide, and the receiving circuit is configured to receive the millimeter wave digital signal output by the 90 degree bridge of the substrate integrated waveguide and demodulate the millimeter wave digital signal into the high-speed baseband digital signal.
The invention provides a millimeter wave double-circular polarization bidirectional data transmission device, which comprises a millimeter wave modem transceiver, a substrate integrated waveguide 90-degree bridge, an orthogonal half-mode waveguide excitation gap and an orthogonal mode synthesis waveguide circular polarization radiator which are sequentially arranged on a circuit board, wherein the substrate integrated waveguide 90-degree bridge is connected with the millimeter wave modem transceiver, the orthogonal half-mode waveguide excitation gap is connected with the substrate integrated waveguide 90-degree bridge, and the orthogonal mode synthesis waveguide circular polarization radiator is connected with the orthogonal half-mode waveguide excitation gap.
In an alternative embodiment of the second aspect, the millimeter wave modem transceiver further includes a transmitting circuit for modulating the high-speed baseband digital signal into a millimeter wave digital signal and transmitting the millimeter wave digital signal to the 90 degree bridge of the substrate integrated waveguide, and a receiving circuit for receiving the millimeter wave digital signal output by the 90 degree bridge of the substrate integrated waveguide and demodulating the millimeter wave digital signal into the high-speed baseband digital signal.
In an optional implementation manner of the second aspect, the 90-degree bridge of the substrate integrated waveguide includes upper and lower metal layers, a high-frequency dielectric plate, and metallized through holes, wherein the upper and lower metal layers cover two sides of the high-frequency dielectric plate, and the metallized through holes are arranged on the whole formed by the upper and lower metal layers and the high-frequency dielectric plate.
In an alternative embodiment of the second aspect, two ports of the 90-degree bridge of the substrate integrated waveguide are connected to a millimeter wave modem transceiver through a microstrip transmission line.
In an alternative embodiment of the second aspect, the 90-degree bridge end of the substrate integrated waveguide is provided with an open narrow slit with an included angle of 90 degrees.
In an alternative embodiment of the second aspect, the orthogonal half-mode waveguide excitation slit and the orthogonal mode synthesis waveguide circular polarization radiator are an integrated metal structure and are fixed above the 90-degree bridge of the substrate integrated waveguide.
The millimeter wave transceiver circuit and the double circularly polarized antennas are integrated integrally, so that higher directional gain is achieved, short-range ultra-high-speed wireless digital signal bidirectional transmission is realized through a smaller circuit size, and the problems of signal transmission in a narrow space, signal polarization alignment and stable transmission under the conditions of antenna rotation and arbitrary angle placement (such as free rotation joints and the like) are solved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. The above and other objects, features and advantages of the present application will become more apparent from the accompanying drawings. Like reference numerals refer to like parts throughout the several views of the drawings. The drawings are not intended to be drawn to scale, with emphasis instead being placed upon illustrating the principles of the application.
FIG. 1 is a schematic diagram of a millimeter wave dual circularly polarized bidirectional data transmission module circuit provided by the invention
FIG. 2 is a top view of a millimeter wave dual circularly polarized bidirectional data transmission device provided by the invention
FIG. 3 is a side view of a millimeter wave dual circularly polarized bidirectional data transmission device provided by the invention
FIG. 4 is a perspective view of a millimeter wave dual circularly polarized bidirectional data transmission device provided by the invention
FIG. 5 is a graph showing the reflection coefficient S11 of the antenna port according to an embodiment of the present invention
Fig. 6 is a graph of the gain frequency response of an antenna according to an embodiment of the invention
FIG. 7 is a graph of normalized transmission frequency response for inter-module transmit-receive cross-transmission in accordance with an embodiment of the present invention;
The icons are a 1-millimeter wave modem transceiver, a 2-substrate integrated waveguide 90-degree bridge, a 3-orthogonal half-mode waveguide excitation gap, a 4-orthogonal mode synthetic waveguide circular polarization radiator, a 5-high frequency dielectric plate, a 6-metalized through hole, a 7-microstrip transmission line, 8-upper and lower layers of metal and a 9-opening narrow gap.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, based on the embodiments of the application, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the application. Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, based on the embodiments of the application, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the application.
In the description of the present application, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, directly connected, indirectly connected via an intermediate medium, or in communication with each other between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
As shown in fig. 1, the millimeter wave double-circular polarization bidirectional data transmission module comprises a millimeter wave modem transceiver 1, a substrate integrated waveguide 90-degree bridge 2, an orthogonal half-mode waveguide excitation gap 3 and an orthogonal mode synthetic waveguide circular polarization radiator 4. The millimeter wave modem transceiver 1 comprises a transmitting circuit part for directly modulating the transmitted high-speed baseband digital signal to a millimeter wave carrier frequency through an ASK or OOK system and transmitting the signal, and a receiving circuit part for receiving the millimeter wave frequency band broadband modulation signal and performing detection demodulation to output the received high-speed baseband digital signal. The substrate integrated waveguide 90-degree bridge 2 performs transmission distribution and reception synthesis of millimeter wave modulation signals with equal amplitude and 90-degree phase difference in a broadband range. The orthogonal half-mode waveguide excites the slot 3, differential current is formed through the substrate integrated waveguide slot to realize conversion from the substrate integrated waveguide to the metal waveguide, and the two half-mode metal waveguide slots perpendicular to 90 degrees form TE11 modes of the electric field excited circular waveguide radiator 4.
The orthogonal mode synthesis waveguide circular polarization radiator 4 excites two TE11 modes with orthogonal polarization through a vertical waveguide slot, millimeter wave modulation signal distribution and synthesis are carried out through the substrate integrated waveguide 90-degree bridge 2, and left-right rotation double circular polarization transmission can be formed for receiving and transmitting.
Referring to fig. 5-7, the millimeter wave dual-circular polarization bidirectional data transmission module working at 60GHz of V-band provided by the embodiment has a transmission code rate of up to 5Gbps for transmitting and receiving baseband digital signals, the module antenna realizes dual-circular polarization separation for receiving and transmitting by orthogonal TE11 mode synthesis, the transmission bandwidth reaches 6.5GHz, the angle between waveguide circular polarization antennas can freely rotate during module signal transmission, polarization alignment is not needed, the antenna caliber is 8mm, the circular waveguide antenna gain is 9dbi, and high-frequency broadband signal transmission can be realized in a narrow space.
Referring to fig. 2-4, a second embodiment provided by the present invention includes a millimeter wave modem transceiver 1, a substrate integrated waveguide 90-degree bridge 2, an orthogonal half-mode waveguide excitation slit 3, and an orthogonal mode synthesis waveguide circularly polarized radiator 4, which are sequentially arranged on a circuit board. The millimeter wave receiving and dispatching signal port of the millimeter wave modem transceiver 1 is connected with the 90-degree bridge 2 port of the substrate integrated waveguide, the transmitting circuit of the millimeter wave modem transceiver 1 mixes the input 0-5Gbps differential high-speed baseband digital signal with an internal local oscillator source through an ASK modulation mode, so that the digital signal is modulated onto a 60GHz millimeter wave carrier wave for signal transmission, and the receiving circuit part of the millimeter wave transceiver modem transceiver 1 demodulates the received millimeter wave digital modulation signal through incoherent envelope detection and comparison and outputs the baseband digital signal in a differential level mode.
The transmitted millimeter wave modulation signals are distributed through a substrate integrated waveguide 90-degree bridge 2 to obtain two paths of transmission signals with equal amplitude and 90-degree phase difference, the two paths of transmission signals are synthesized into right-hand circular polarization (RHCP) in a circular waveguide through two orthogonal TE11 modes, and the received millimeter wave modulation signals are synthesized at a receiving output port through the substrate integrated waveguide 90-degree bridge 2 through a left-hand circular polarization (LHCP) mode.
The 90-degree bridge structure of the substrate integrated waveguide is composed of a high-frequency dielectric plate 5, upper and lower layers of metal 8 and a metalized through hole 6, two ports of the 90-degree bridge of the substrate integrated waveguide are directly connected with the millimeter wave modem transceiver 1 through a microstrip transmission line 7, and the other two ports directly excite a group of vertical orthogonal half-mode waveguide excitation slots 3 above the millimeter wave modem transceiver through an opening narrow slot 9 with an included angle of 90 degrees at the tail end of the substrate integrated waveguide.
The orthogonal half-mode waveguide excitation gap 3 and the orthogonal mode synthesis waveguide circular polarization radiator 4 are processed by an integral metal structure and are directly pressed on a printed circuit board where a substrate integrated waveguide 90 bridge 2 is located, a TE11 mode with degenerate rotation of polarization exists in the circular waveguide, two orthogonal TE11 mode electromagnetic fields can be formed in the orthogonal mode synthesis waveguide circular polarization radiator 4 by the two orthogonal half-mode waveguide excitation gaps, meanwhile, good isolation characteristics are achieved, 90-degree phase shift is conducted on excited signals by the 90-degree bridge, the electromagnetic fields of the two orthogonal TE11 modes are different in phase by 90 degrees, so that left-hand or right-hand circular polarized waves are formed, in the embodiment, a transmitting signal is synthesized in the circular waveguide after passing through the 90-degree bridge, and is radiated into space through an end opening of the orthogonal mode synthesis waveguide circular polarization radiator 4, the received left-hand circular polarized signals are different in phase by 90 degrees at the field phase of the two orthogonal mode synthesis waveguide circular polarization radiator 4, and two common-mode synthesis waveguide circular polarization in-phase transmission is achieved by using a single port and different polarizations.
Fig. 5-7 show port reflection, gain curves and transmission responses for embodiments of the present invention, and from the results, it is seen that the module transmission 1dB bandwidth reaches 5GHz, with a 3dB bandwidth exceeding 6.5GHz. The millimeter wave double-circular polarization bidirectional data transmission module and the device reduce millimeter wave signal loss through the 90-degree bridge of the substrate integrated waveguide, improve the amplitude balance and orthogonality of power distribution of polarization synthesis, reduce the PCB process sensitivity of circuit processing, and improve the axial ratio performance of the antenna; the invention works in millimeter wave frequency band, supports bidirectional receiving and transmitting, has a transmission bandwidth of more than 6.5GHz, can transmit broadband digital signals of up to 5Gbps, has high gain and small size of the module antenna, can be placed in any angle in a narrow space between modules, can transmit high-speed digital signals, and is easy to integrate with other circuits.
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| CN111276078B (en) * | 2020-04-10 | 2024-11-15 | 南京达斯琪数字科技有限公司 | A rotating display device based on dual circular polarization bidirectional data transmission module |
| CN111786114B (en) * | 2020-07-15 | 2022-09-30 | 博微太赫兹信息科技有限公司 | Millimeter wave circular polarized antenna based on differential feed |
| CN114389014B (en) * | 2022-01-21 | 2025-02-07 | 北京锐达仪表有限公司 | Antenna device for realizing circularly polarized waves |
| CN116614334A (en) * | 2023-06-20 | 2023-08-18 | 清华大学 | Method, antenna and equipment for amplitude keying transmission based on dielectric waveguide dual polarization |
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| RU2251768C2 (en) * | 2002-12-20 | 2005-05-10 | Общество с ограниченной ответственностью Научно-производственное предприятие "Агама" | Circular-polarization microstrip antenna |
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| GB8816276D0 (en) * | 1988-07-08 | 1988-08-10 | Marconi Co Ltd | Waveguide coupler |
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