CN112736421A - Radio frequency device and electronic equipment - Google Patents
Radio frequency device and electronic equipment Download PDFInfo
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- CN112736421A CN112736421A CN202011423978.0A CN202011423978A CN112736421A CN 112736421 A CN112736421 A CN 112736421A CN 202011423978 A CN202011423978 A CN 202011423978A CN 112736421 A CN112736421 A CN 112736421A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—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
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
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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
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
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Abstract
The embodiment of the application discloses a radio frequency device and electronic equipment, including: a middle frame and a radio frequency circuit; the middle frame comprises at least nine discontinuous middle frame segments, and gaps are arranged among the middle frame segments; the middle frame segments comprise a first middle frame segment, a second middle frame segment, a third middle frame segment, a fourth middle frame segment, a fifth middle frame segment, a sixth middle frame segment, a seventh middle frame segment, an eighth middle frame segment and a ninth middle frame segment, and feeding points and grounding points are arranged on the middle frame segments. By adopting the embodiment of the application, the high integration degree of the antenna is realized by utilizing the middle frame, the utilization rate of the terminal space is improved, and the interference between the antennas caused by insufficient clearance area is reduced.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a radio frequency device and an electronic apparatus.
Background
At present, most electronic devices, such as mobile phones, personal digital assistants, etc., realize full screen design, and larger and more complete screens become the most widely applied designs in the market at present. Meanwhile, with the improvement of the functions of the electronic equipment, the types of communication modes are more and more abundant, the application scenes are more and more complex, and the number of required antennas is increased. How to not compress the clearance area of the antenna under the condition of full screen design is an important subject for antenna design.
In view of the above, the present invention has been made to provide a radio frequency device and an electronic apparatus that overcome the above problems or at least partially solve the above problems.
Disclosure of Invention
The embodiment of the application provides a radio frequency device and electronic equipment, which can make full use of a middle frame to realize high integration of antennas, improve the utilization rate of a terminal space and reduce interference among the antennas caused by insufficient clearance area. The technical scheme is as follows:
in a first aspect, the present application provides a radio frequency device, including: a middle frame and a radio frequency circuit;
the middle frame comprises at least nine discontinuous middle frame segments, and gaps are arranged among the middle frame segments; the middle frame segments comprise a first middle frame segment, a second middle frame segment, a third middle frame segment, a fourth middle frame segment, a fifth middle frame segment, a sixth middle frame segment, a seventh middle frame segment, an eighth middle frame segment and a ninth middle frame segment, and feeding points and grounding points are arranged on the middle frame segments;
the first middle frame segment is used for transmitting low-frequency main set radio frequency signals and 5G MIMO signals of a first frequency band;
the second middle frame segment is used for transmitting a master set radio frequency signal of a middle and high frequency band and a 5G MIMO signal of a second frequency band;
the third middle frame segment is used for transmitting the 5G MIMO signal of the first frequency band and the 5G MIMO signal of the second frequency band;
the fourth middle frame segment is used for transmitting a UWB signal of a third frequency band;
the fifth middle frame segment is used for transmitting a GPS signal of an L5 frequency band and a UHF signal of a fourth frequency band;
the sixth middle frame segment is used for transmitting 5G MIMO signals of a second frequency band;
the seventh middle frame segment is used for transmitting a WiFi MIMO signal of a fifth frequency band;
the eighth middle frame segment is used for transmitting a GPS signal of an L1 frequency band, a Bluetooth signal of a sixth frequency band and a WiFi MIMO signal of the sixth frequency band;
the ninth middle frame segment is used for transmitting a master set radio frequency signal of a middle and high frequency band and a 5G MIMO signal of a second frequency band;
the radio frequency circuit is connected with the feed point and used for transmitting radio frequency signals through the middle frame segment.
In a second aspect, the present application provides an electronic device provided with the radio frequency device of the first aspect.
The beneficial effects brought by the technical scheme provided by some embodiments of the application at least comprise: dividing the middle frame into a plurality of middle frame segments by utilizing a gap and a grounding point, and constructing the middle frame segments into antennas for various communication occasions through a matching network circuit and structural change so that a radio frequency circuit transmits radio frequency signals of various frequency bands through the middle frame segments; the high integration degree of the antennas is realized by fully utilizing the middle frame, the utilization rate of the terminal space is improved, and the interference among the antennas caused by insufficient clearance area is reduced; multiple sending and multiple receiving are realized through multiple antennas, and the system channel capacity is improved in multiples under the condition that frequency spectrum resources and antenna transmitting power are not increased; by utilizing the plurality of antennas, the range of the electronic equipment for receiving signal frequency bands can be increased, so that the electronic equipment can receive signals of more frequency bands, the normal operation of the electronic equipment is ensured, and the application range of the electronic equipment is enlarged.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a radio frequency device according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of a first middle frame segment provided in an embodiment of the present application;
FIG. 3A is a schematic structural diagram of a third middle frame segment provided in an embodiment of the present application;
fig. 3B is a schematic structural diagram of a first coupled antenna provided in the embodiment of the present application;
FIG. 4 is a schematic structural diagram of another RF device provided in an embodiment of the present application;
fig. 5 is a flowchart illustrating a control unit instructing a second set of middle frame segments to transmit a 5G MIMO signal of a first frequency band according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present application, it is noted that, unless explicitly stated or limited otherwise, "including" and "having" and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art. Further, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
The present application will be described in detail with reference to specific examples.
It is understood that the electronic device (Terminal device) in the embodiment of the present invention includes, but is not limited to, a Mobile Station (MS), a Terminal device (Mobile Terminal), a Mobile phone (Mobile Telephone), a handset (handset), a portable device (portable equipment), and the like, and the Terminal device may communicate with one or more core networks through a Radio Access Network (RAN), for example, the Terminal device may be a Mobile phone (or referred to as a "cellular" phone), a computer with a wireless communication function, and the Terminal device may also be a portable, pocket, handheld, computer-embedded, or vehicle-mounted Mobile device or device.
As shown in fig. 1, a schematic structural diagram of a radio frequency device provided in an embodiment of the present application includes: a middle frame 10 and a radio frequency circuit 100. Wherein, the middle frame 10 includes at least nine discontinuous middle frame segments, in this embodiment, the middle frame 10 includes: a first middle frame segment 101, a second middle frame segment 102, a third middle frame segment 103, a fourth middle frame segment 104, a fifth middle frame segment 105, a sixth middle frame segment 106, a seventh middle frame segment 107, an eighth middle frame segment 108 and a ninth middle frame segment 109, wherein the middle frame segments are provided with a feeding point and a grounding point.
The radio frequency circuit 100 may be understood as a circuit that generates a radio frequency signal and transmits the radio frequency signal to the middle frame segment or other antenna structure through the feeding point, and a circuit that receives a radio frequency signal transmitted by another device through the middle frame segment or other antenna structure. In other words, the rf circuit 100 is a power source for the antenna to perform electromagnetic conversion.
In one possible embodiment, the rf circuit 100 is connected to the feed point via an inductor and to a capacitor via an inductor; the other end of the capacitor is grounded. In a digital circuit, when the circuit is switched from one state to another, a large spike current is generated on the power supply line, creating a transient noise voltage, and the capacitor acts as a decoupling capacitor to suppress noise. The capacitance may be 10 to 100 μ F electrolytic capacitor, 0.01 μ F ceramic capacitor, or 10 μ F tantalum electrolytic capacitor. The beneficial effects brought by the technical scheme provided by some embodiments of the application at least comprise: a capacitor and an inductor are arranged between the radio frequency circuit and the middle frame segment, self-excitation can be eliminated, the radio frequency circuit can work stably, interference in the output radio frequency signal is used as a filtering object, and high-frequency clutter is filtered.
In a possible embodiment, the rf circuit 100 implements amplification and transmission of carrier signals with different frequencies through one amplifier, so that the number of power amplifiers used during carrier aggregation can be reduced, and material cost can be saved.
The middle frame 10 may be a metal structure having a thin plate-like or sheet-like structure formed by a substrate and a side plate, which are provided around the periphery of the electronic device, and generally, the substrate is made of a high-silicon aluminum alloy having high mechanical strength and good fluidity, and the side plate is made of a low-silicon alloy having good antenna performance. A plurality of function holes or function slots, for example, an antenna slot, a USB hole, an earphone hole, a SIM card hole, a side key hole lamp, etc., are provided on the side plate. A layer of plastic is poured on the outermost layer of the middle frame 10 to protect the middle frame 10 and reduce abrasion and deformation of the middle frame 10.
The shape of the middle frame 10 may be rectangular or circular, and the drawing of the present embodiment is only one case, depending on the structure of the electronic device.
In this embodiment, as shown in fig. 1, the functional slot 11 is an earphone hole or an external connection port for blood glucose and blood pressure, and the external connection port may be an SMA (SMA, SmallA Type) interface, a Bayonet Nut Connector (BNC, Bayonet Nut Connector), a Universal Serial Bus (USB, Universal Serial Bus) interface or a C-Type USB interface; the functional groove 12 is a rear camera module; the functional tanks 13, 16 and 17 are detection ends of a blood oxygen and electrocardio heart rate sensor, the functional tanks 16 and 17 are communication interfaces compatible with I2C, an integrated red light LED and an infrared light LED, and the functional tank 13 is provided with a photoelectric detector, an optical device and a low-noise electronic circuit with ambient light inhibition; the function groove 14 is a volume increasing and decreasing key; the functional groove 15 is a side fingerprint and a switch key; the functional groove 18 is a temperature detection end and comprises a temperature sensor; the functional slot 19 is a TYPE-C interface. By adopting the embodiment of the application, each functional module is reasonably arranged on the functional groove or the functional hole of the middle frame, the distribution rationality of the antenna is improved, and the utilization rate of the middle frame space is improved.
The first middle frame segment 101, which is the middle frame segment between the first slot and the first ground point, is configured to transmit the low frequency main set rf signal and the 5G MIMO signal of the first frequency band. The length dimension R of the first slit along the direction parallel to the extending direction of the frame 100 is 0.8mm to 1.8mm, for example, R may be 0.8mm, 1.2mm, 1.6mm or 1.8 mm.
In the embodiment of the present application, a Low Frequency (LF) signal refers to a radio frequency signal having a frequency band of 0.8GHz to 0.96GHz, and is used as a satellite navigation system (differential global positioning system), an international broadcast, an AM broadcast, a radio wave timing (time service), and the like; the 5G MIMO signal of the first frequency band refers to a 5G high-frequency N41 MIMO signal, and the frequency band is 2.5 GHz-2.7 GHz; the Multiple-Input Multiple-Output (MIMO) technology is to use Multiple transmitting antennas and Multiple receiving antennas at a transmitting end and a receiving end, respectively, so that signals are transmitted and received through the Multiple antennas at the transmitting end and the receiving end, thereby improving communication quality.
The second middle frame segment 102, which is a middle frame segment between the second slot and the second ground point, is configured to transmit the medium-high band main rf signal and the second band 5G MIMO signal. The size of the second gap is determined according to the size of the first gap, and the value range is 0.8mm to 1.8 mm. In the embodiment of the application, the medium-high frequency band signal refers to a radio frequency signal of 1.7 GHz-2.7 GHz and is used for near field communication; the 5G MIMO signal of the second frequency band refers to a 5G NR 1N 77/N78/N79 MIMO signal, and the frequency band is 3.3 GHz-5 GHz.
A third middle frame segment 103, which refers to the middle frame segment between the third slot and the fourth ground point, is configured to transmit the 5G MIMO signals of the first frequency band and the 5G MIMO signals of the second frequency band. A distance is reserved between the second grounding point and the third grounding point, and the second middle frame segment 102 and the third middle frame segment 103 are separated by two grounding points, so that excessive gaps are avoided, and the strength and the reliability of the middle frame are reduced.
The 5G MIMO signal of the first frequency band refers to a 5G high-frequency N41 MIMO signal with the frequency band of 2.5 GHz-2.7 GHz, and the 5G MIMO signal of the second frequency band refers to a 5G NR 1N 77/N78/N79 MIMO signal with the frequency band of 3.3 GHz-5 GHz. The third middle frame segment 103 may form a 2x2 5G MIMO antenna set with the first middle frame segment, and simultaneously transceive 5G MIMO signals of the first frequency band.
A fourth middle frame segment 104, referred to as the middle frame segment between the fourth slot and the fourth ground point, is configured for transmitting UWB signals in the third frequency band. A distance is left between the first and fourth ground points, e.g. a horizontal distance of 3mm and a vertical distance of 1.2 mm. The fourth middle frame segment 104 and the first middle frame segment 101 are separated by two grounding points, so that excessive gaps are avoided, and the strength and reliability of the middle frame are reduced.
The Ultra Wide Band (UWB) technology is a wireless carrier communication technology, has the advantages of low system complexity, low power spectral density of transmitted signals, high positioning accuracy and the like, is particularly suitable for high-speed wireless access in dense multipath places such as indoor places and is mainly used for Wireless Personal Area Network (WPAN) communication. The Ultra Wide Band (UWB) Band is 3.1 GHz-10.6 GHz.
The fifth middle frame segment 105, which is the middle frame segment between the sixth ground point and the sixth slot, is configured to transmit the GPS signal of the L5 band and the UHF signal of the fourth band.
The L5 frequency band GPS signal refers to the frequency band of 1176.45 + -1.023 MHz radio frequency signal, the GPS (Global Positioning system) refers to the system which uses GPS Positioning satellite to position and navigate in real time in the Global scope, the L5 frequency band signal is the third civil GPS signal, which is beneficial to the cycle slip detection, the ionosphere delay error correction and the whole cycle ambiguity determination in the GPS measurement process, and the civil Positioning accuracy is improved from 5 meters to 30 centimeters. The UHF signal of the fourth frequency band is a radio frequency signal with a frequency band of 0.8GHz to 1.2GHz, and is mainly used for short-distance communication, analog television, digital television broadcasting and the like.
A sixth middle frame segment 106, which refers to the middle frame segment between the sixth ground point and the sixth slot, is configured to transmit 5G MIMO signals of the second frequency band. The 5G MIMO signal of the second frequency band refers to a 5G NR 1N 77/N78/N79 MIMO signal, and the frequency band is 3.3 GHz-5 GHz.
A seventh middle frame segment 107, which refers to the middle frame segment between the seventh slot and the seventh ground point, is configured to transmit WiFi MIMO signals of the fifth frequency band. The WiFi MIMO signal of the fifth frequency band is a 2.4ghz WiFi signal, and forms a 2x2 WiFi MIMO antenna set with the eighth middle frame segment 108 to jointly receive and transmit WiFi signals.
The eighth middle frame segment 108 refers to a middle frame segment between the sixth ground point and the eighth slot, and is configured to transmit the GPS signal of the L1 band, the bluetooth signal of the sixth band, and the WiFi MIMO signal of the sixth band. The GPS signal of the L1 frequency band refers to a radio frequency signal with the frequency band of 1575.42 +/-1.023 MHz, and the GPS signal of the L1 frequency band is only suitable for the precise positioning of a short baseline (<15km) because the influence of ionospheric delay can not be effectively eliminated. The Bluetooth signal of the sixth frequency band is a radio frequency signal with the frequency band of 2.4-2.5 GHz and is mainly used for Bluetooth communication among electrons. The WiFi MIMO signal of the sixth frequency band is a WiFi signal with a frequency band of 5GHz, and the eighth middle frame segment 108 and the seventh middle frame segment 107 form a 2x2 WiFi MIMO antenna set to jointly receive and transmit the WiFi signal.
The ninth middle frame segment 109, which refers to the middle frame segment between the ninth slot and the ninth ground point, is configured to transmit the main rf signal in the middle and high frequency band and the 5G MIMO signal in the second frequency band. The 5G MIMO signal of the second frequency band refers to a 5G NR 1N 77/N78/N79 MIMO signal, and the frequency band is 3.3 GHz-5 GHz. The second middle frame segment 102, the third middle frame segment 103, the sixth middle frame segment 106, and the ninth middle frame segment 109 may collectively form a 4x 45G MIMO set, and collectively transceive 5G signals, so that the electronic device may implement 5G communication.
The beneficial effects brought by the technical scheme provided by some embodiments of the application at least comprise: dividing the middle frame into a plurality of middle frame segments by utilizing a gap and a grounding point, and constructing the middle frame segments into antennas for various communication occasions through a matching network circuit and structural change so that a radio frequency circuit transmits radio frequency signals of various frequency bands through the middle frame segments; the high integration degree of the antennas is realized by fully utilizing the middle frame, the utilization rate of the terminal space is improved, and the interference among the antennas caused by insufficient clearance area is reduced; multiple sending and multiple receiving are realized through multiple antennas, and the system channel capacity is improved in multiples under the condition that frequency spectrum resources and antenna transmitting power are not increased; by utilizing the plurality of antennas, the range of the electronic equipment for receiving signal frequency bands can be increased, so that the electronic equipment can receive signals of more frequency bands, the normal operation of the electronic equipment is ensured, and the application range of the electronic equipment is enlarged.
As shown in fig. 2, a schematic structural diagram of a first middle frame segment provided in the embodiment of the present application includes: the radio frequency antenna comprises a control unit 201, a first matching network circuit 202, a first switch 203, a radio frequency circuit 100 and a first middle frame segment 101, wherein a first loading point 1011 and a feeding point 1012 are arranged on the first middle frame segment 101.
The control unit 201, which may be understood as connecting various parts within the overall server using various interfaces and lines, performs various functions of the server and processes data by executing or executing instructions, programs, code sets, or instruction sets stored in memory, and calling data stored in memory. Alternatively, the control unit 201 may be implemented in at least one hardware form of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), and Programmable Logic Array (PLA). The control Unit 201 may integrate one or a combination of a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), a modem, and the like. The control unit 201 may include one or more processing cores.
In the embodiment of the present application, the control unit 201 is configured to send a control signal to the first switch 203, and the control signal may be a digital pulse signal. The control unit 201 uses the code of the digital pulse signal to control the connection of the moving terminal of the first switch 203 with the different stationary terminals for connecting different matching circuits in the first matching network circuit.
For example: the first switch 203 is provided with 4 stationary terminals: the device comprises an immobile end 1, an immobile end 2, an immobile end 3 and an immobile end 4; the control signal is a digital pulse signal, when the code of the digital pulse signal is 1000, the first switch 203 controls the movable end to be connected with the immovable end 1, when the code of the digital pulse signal is 0100, the first switch 203 controls the movable end to be connected with the immovable end 2, when the code of the digital pulse signal is 0010, the first switch 203 controls the movable end to be connected with the immovable end 3, and when the code of the digital pulse signal is 1000, the first switch 203 controls the movable end to be connected with the immovable end 4; the control unit 201 sends a control signal to the first switch 203 through the control end of the first switch 203, and the code of the first control signal is 1000; the first switch 203 receives the control signal, controls the movable terminal to connect to the stationary terminal 1, so as to connect the matching circuit corresponding to the stationary terminal 1 to the first middle frame segment 101, and connects the first middle frame segment 101 to the ground through the movable terminal.
It should be understood that the characteristic parameters describing the antenna include gain, input impedance, radiation wavelength and bandwidth, wherein the input impedance may be changed according to the impedance of the connected matching circuit, and the radiation wavelength may be changed according to the length of the antenna radiator. Because the impedance of different matching circuits is different, the antenna is required to work on different frequency bands based on different communication requirements, and the input resistance of the first middle frame segment 101 is changed according to the accessed matching circuit, so that the first middle frame segment 101 can transmit and receive signals on the designated frequency band.
For example: when the transmission of the low-frequency main set radio frequency signal is realized, selecting a matching circuit corresponding to the low-frequency main set radio frequency signal to be accessed to the first middle frame segment 101; when the transmission of the 5G MIMO signal of the first frequency band is implemented, the matching circuit corresponding to the 5G MIMO signal of the first frequency band is selected to be accessed to the first middle frame segment 101.
The beneficial effects brought by the technical scheme provided by some embodiments of the application at least comprise: compared with the prior art that two independent antennas are respectively arranged for two frequencies, the antenna switch realizes multiplexing between two antenna radiators, increases the size of a clearance area inside the terminal, reduces interference among the antennas when the terminal works, and saves cost compared with an integrated antenna; the matching circuit network and the antenna switch are utilized to change the matching resistance of the radiator of the main antenna, and the communication frequency band of the antenna further spans more frequency width, so that the antenna is suitable for more complex communication working environment.
In an embodiment of the present application, the radio frequency apparatus of the present application further includes: a second switch, a third switch, a fourth switch, a second matching network circuit, a third matching network circuit, and a fourth matching network circuit. A second loading point is arranged on the second middle frame segment 102, the second loading point is connected with a second matching network circuit, and the second matching network circuit is grounded through a second switch; a third loading point is arranged on the fifth middle frame segment 105, the third loading point is connected with a third switch, the third switch is connected with a third matching network circuit, and the third matching network circuit is connected with the radio frequency circuit 100; a ninth middle frame segment 109 is provided with a fourth loading point, the fourth loading point is connected to the fourth matching network circuit, and the fourth matching network circuit is grounded through the fourth switch.
The matching network circuit is similar to the first matching network circuit 202, the switch is similar to the first switch 203, and the connection relationship among the matching network, the middle frame segment and the switch is shown in fig. 2 and is not described herein again.
The beneficial effects brought by the technical scheme provided by some embodiments of the application at least comprise: dividing the middle frame into a plurality of middle frame segments by utilizing a gap and a grounding point, and constructing the middle frame segments into antennas for various communication occasions through a matching network circuit and structural change so that a radio frequency circuit transmits radio frequency signals of various frequency bands through the middle frame segments; the high integration degree of the antennas is realized by fully utilizing the middle frame, the utilization rate of the terminal space is improved, and the interference among the antennas caused by insufficient clearance area is reduced; multiple sending and multiple receiving are realized through multiple antennas, and the system channel capacity is improved in multiples under the condition that frequency spectrum resources and antenna transmitting power are not increased; by utilizing the plurality of antennas, the range of the electronic equipment for receiving signal frequency bands can be increased, so that the electronic equipment can receive signals of more frequency bands, the normal operation of the electronic equipment is ensured, and the application range of the electronic equipment is enlarged.
As shown in fig. 3, a schematic structural diagram of a third middle frame segment provided in the embodiment of the present application includes: a third middle frame segment 103 and a first coupling antenna 301, and an isolation slot 302 is arranged between the third middle frame segment 103 and the first coupling antenna 301.
The third middle frame segment 103, which refers to the middle frame segment between the third slot and the fourth ground point, is configured to transmit the 5G MIMO signal of the first frequency band and the 5G MIMO signal of the second frequency band, and includes a side frame 1031. It will be appreciated that the middle frame section is generally provided with a plurality of side frames, and that the side frame 1031 may be any one of the side frames of the third middle frame section 103.
An isolation slot 302 is arranged between the third middle frame segment 103 and the first coupling antenna 301, the isolation slot 302 is used for separating the third middle frame segment 103 from the first coupling antenna 301, and the coupling distance between the third middle frame segment 103 and the first coupling antenna 301 is controlled by controlling the size of the isolation slot 302. The size of the isolation trench 302 is preferably M, wherein M ranges from 0.3mm to 1.2mm, for example, M may be 0.3mm, 0.6mm, 0.8mm, 1.0mm, or 1.2 mm. The isolation trench 302 is filled with a non-metallic insulating material, such as rubber.
The first coupling antenna 301 may be understood as a device that converts a high-frequency current into a radio wave and a free electromagnetic wave to be radiated to a surrounding space, or a device that receives a radio wave, converts the radio wave into a high-frequency current, and transmits the high-frequency current to a receiving apparatus. The first coupling antenna 301 is provided with a feeding point, the feeding point is provided with a feeding element 303, and the first coupling antenna 301 is electrically connected with the radio frequency circuit through the feeding element 303.
As shown in fig. 3B, a schematic structural diagram of the first coupled antenna 301 in the embodiment of the present application includes: top wall 3011, upright wall 3012, bottom wall 3013, and card slot 3014. The top wall 3011, the upright wall 3012, and the bottom wall 3013 may have any shape in theory, but in view of easy processing and easy assembly with other components in the electronic terminal, the walls 3011, the upright walls 3012, and the bottom wall 3013 are all configured to be rectangular, and the walls 3011, the upright walls 3012, and the bottom wall 3013 extend in a direction parallel to the side frames 1031, respectively. The bottom wall 3013 is parallel to the substrate, a card slot 3014 is disposed on the bottom wall 3013, the feeding element 304 is fixed and clamped in the card slot 3014, and the first coupling antenna 301 is fixed on the substrate through the feeding element 304.
The beneficial effects brought by the technical scheme provided by some embodiments of the application at least comprise: a vertical face antenna coupled with the middle frame is arranged in the middle frame of the electronic terminal, and signals of a preset frequency band are transmitted after the vertical face antenna is coupled with the frame; compared with the prior art, the method of coupling the planar antenna with the middle frame has the advantages that the coupling area between the middle frame and the vertical face antenna can be increased by adopting the vertical face antenna to be coupled with the middle frame, so that the signal coupling strength between the vertical face antenna and the middle frame is increased; the relative distance between the middle frame and the facade antenna is controlled by arranging the isolation groove on the middle frame, so that the antenna efficiency can reach more than 50% under the harsh condition of the antenna arrangement environment, and the radiation performance of the antenna is effectively improved.
In an embodiment of the present application, the radio frequency device further includes: a second coupled antenna, a third coupled antenna, and a fourth coupled antenna. A second coupling antenna is arranged on the inner side of the fourth middle frame segment 104 and used for coupling with the fourth middle frame segment 104 after feeding; a third coupling antenna is arranged on the inner side of the sixth middle frame segment 106, and the third coupling antenna is used for coupling with the sixth middle frame segment 106 after feeding; a fourth coupling antenna is arranged on the inner side of the eighth middle frame segment 108, and the fourth coupling antenna is used for coupling with the eighth middle frame segment 108 after feeding.
The coupling antenna is similar to the first coupling antenna 301, as shown in fig. 3B, and the connection relationship between the coupling antenna and the middle frame segment is shown in fig. 3A, which is not described herein again.
The beneficial effects brought by the technical scheme provided by some embodiments of the application at least comprise: dividing the middle frame into a plurality of middle frame segments by utilizing a gap and a grounding point, and constructing the middle frame segments into antennas for various communication occasions through a matching network circuit and structural change so that a radio frequency circuit transmits radio frequency signals of various frequency bands through the middle frame segments; the high integration degree of the antennas is realized by fully utilizing the middle frame, the utilization rate of the terminal space is improved, and the interference among the antennas caused by insufficient clearance area is reduced; multiple sending and multiple receiving are realized through multiple antennas, and the system channel capacity is improved in multiples under the condition that frequency spectrum resources and antenna transmitting power are not increased; by utilizing the plurality of antennas, the range of the electronic equipment for receiving signal frequency bands can be increased, so that the electronic equipment can receive signals of more frequency bands, the normal operation of the electronic equipment is ensured, and the application range of the electronic equipment is enlarged.
As shown in fig. 4, a schematic structural diagram of another radio frequency device provided in the embodiment of the present application includes: a middle frame 10, a radio frequency circuit 100, a control unit 201 and an NFC antenna 110. Wherein, the middle frame 10 includes at least nine discontinuous middle frame segments, in this embodiment, the middle frame 10 includes: a first middle frame segment 101, a second middle frame segment 102, a third middle frame segment 103, a fourth middle frame segment 104, a fifth middle frame segment 105, a sixth middle frame segment 106, a seventh middle frame segment 107, an eighth middle frame segment 108 and a ninth middle frame segment 109, wherein the middle frame segments are provided with a feeding point and a grounding point.
The middle frame 100 may be a metal structure having a thin plate-like or sheet-like structure formed by a substrate and a side plate, and provided around the periphery of the electronic device, and the substrate is usually made of a high-silicon aluminum alloy having high mechanical strength and good fluidity, and the side plate is made of a low-silicon alloy having good antenna performance. A plurality of functional holes or functional grooves are arranged on the side plate. The embodiment of the present application includes functional slots 11, 12, 13, 14, 15, 16, 17, and 18, and functions and structures are as shown in fig. 1 above, and are not described herein again.
The first middle frame segment 101, the second middle frame segment 102, the third middle frame segment 103, the fourth middle frame segment 104, the fifth middle frame segment 105, the sixth middle frame segment 106, the seventh middle frame segment 107, the eighth middle frame segment 108, and the ninth middle frame segment 109 are as shown in fig. 1 to fig. 3, and the functions and structures thereof are not described again here.
The radio frequency circuit 100 may be understood as a circuit that generates a radio frequency signal and transmits the radio frequency signal to the middle frame segment or other antenna structure through the feeding point, and a circuit that receives a radio frequency signal transmitted by another device through the middle frame segment or other antenna structure. In other words, the rf circuit 100 is a power source for providing electromagnetic conversion from the antenna.
The NFC antenna 110 is disposed in the middle frame, and is an antenna for communication based on RFID technology and using transformer co-coupling matching, and is mainly used for short-distance wireless communication, for example: when getting on or off the subway, the gate machine is flushed by the mobile phone equipped with the NFC antenna.
The control unit 201, which may be understood as connecting various parts within the overall server using various interfaces and lines, performs various functions of the server and processes data by executing or executing instructions, programs, code sets, or instruction sets stored in memory, and calling data stored in memory. Alternatively, the control unit 201 may be implemented in at least one hardware form of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), and Programmable Logic Array (PLA). The control Unit 201 may integrate one or a combination of a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), a modem, and the like. The control unit 201 may include one or more processing cores.
As shown in fig. 5, in the embodiment of the present application, the control unit 201 is configured to perform the following steps:
s501, judging that the current transmission mode is the 5G MIMO transmission mode of the second frequency band.
The 5G MIMO signal of the second frequency band refers to a 5G NR 1N 77/N78/N79 MIMO signal, the frequency band is 3.3 GHz-5 GHz, and the signal is mainly used for long-distance cellular mobile communication. The control unit 201 detects that the electronic device is in the 5G MIMO transmission mode of the second frequency band, for example, the user instructs the electronic device to download the video using the 5G channel to the 5G mode of turning on the electronic device; the electronic device receives a trigger instruction from the liquid crystal screen, and sends a 5G communication request obtained by analyzing the trigger instruction to the control unit 201; the control unit 201 determines that the electronic device is in the 5G MIMO transmission mode of the second frequency band at this time based on the 5G communication request.
S502, selecting the second middle frame segment 102, the third middle frame segment 103, the sixth middle frame segment 106 and the ninth middle frame segment 109 to form a first middle frame segment set.
A second middle frame segment 102, configured to transmit a medium-high frequency band master set radio frequency signal and a 5G MIMO signal of a second frequency band; a third middle frame segment 103, configured to transmit a 5G MIMO signal of the first frequency band and a 5G MIMO signal of the second frequency band; a sixth middle frame segment 106 for transmitting 5G MIMO signals of the second frequency band; and a ninth middle frame segment 109, configured to transmit the master set radio frequency signal in the middle and high frequency bands and the 5G MIMO signal in the second frequency band. The control unit 201 selects the above middle frame segments capable of transmitting the 5G MIMO signals of the second frequency band to form a 4 × 4 set of 5G MIMO antennas, i.e., a first set of middle frame segments.
S503, instruct the radio frequency circuit 100 to transmit the 5G MIMO signal of the first frequency band through the first middle frame segment set.
The control unit 201 sends a first control signal to the second switch, so that the moving end of the second switch selects a matching circuit corresponding to the 5G MIMO signal of the second frequency band in the second matching network circuit, and the second middle frame segment 102 is connected to the matching circuit; instructing the rf circuit 100 to transmit a first rf signal to the first coupling antenna 301, so that the first coupling antenna 301 is coupled to the third middle frame segment 103; instructing the rf circuit 100 to transmit a second rf signal to the third coupling antenna, so that the third coupling antenna is coupled to the sixth middle frame segment 106; sending a second control signal to the fourth switch, so that the moving end of the third switch selects a matching circuit corresponding to the 5G MIMO signal of the second frequency band in the fourth matching network circuit, thereby connecting the ninth bezel segment 109 to the matching circuit; through the above steps, the radio frequency circuit 100 transmits the 5G MIMO signal of the second frequency band, i.e., the signal with the frequency band of 3.3GHz to 5GHz, through the first middle frame segment set.
For example, if the rf signal of the rf circuit is a Global System for Mobile Communication (GSM) 3300 rf signal, the corresponding frequency is 3.3 GHz; the first middle frame segment set radiates out the radio frequency signal of the frequency band.
The wireless communication may use any communication standard or protocol, including but not limited to Global System for Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Messaging Service (SMS), and the like.
The control unit 201 realizes multiple transmission and multiple reception through multiple antennas, and improves the system channel capacity by times without increasing the spectrum resources and the antenna transmission power.
In another possible embodiment, the control unit 201 is further configured to: when the current transmission mode is a 5G MIMO transmission mode of a first frequency band, selecting the first middle frame segment 101 and the third middle frame segment 103 to form a second middle frame segment set; and instructing the radio frequency circuit 101 to transmit the 5G MIMO signal of the first frequency band through the second set of middle frame segments.
In another possible embodiment, the control unit 201 is further configured to: when the current transmission mode is the WiFi transmission mode, selecting a seventh middle frame segment and an eighth middle frame segment to combine into a third middle frame segment set; the radio frequency circuit 100 is instructed to transmit the WiFi MIMO signal of the fifth frequency band through the third set of middle frame segments.
In another possible embodiment, the control unit 201 is also adapted to; when the current transmission mode is the bluetooth transmission mode, selecting an eighth middle frame segment 108; the rf circuit 100 is instructed to transmit a bluetooth rf signal in the sixth frequency band via the eighth middle frame segment 108.
In another possible embodiment, the control unit 201 is further configured to: when the current transmission mode is the ultra-wideband transmission mode, selecting a fourth middle frame segment 104; and the radio frequency circuit 100 is instructed to transmit the UWB radio frequency signal of the third frequency band through the fourth middle frame segment 104.
The working principle in the above embodiment is as described in fig. 5, and is not described herein again.
The beneficial effects brought by the technical scheme provided by some embodiments of the application at least comprise: dividing the middle frame into a plurality of middle frame segments by utilizing a gap and a grounding point, and constructing the middle frame segments into antennas for various communication occasions through a matching network circuit and structural change so that a radio frequency circuit transmits radio frequency signals of various frequency bands through the middle frame segments; the high integration degree of the antennas is realized by fully utilizing the middle frame, the utilization rate of the terminal space is improved, and the interference among the antennas caused by insufficient clearance area is reduced; multiple sending and multiple receiving are realized through multiple antennas, and the system channel capacity is improved in multiples under the condition that frequency spectrum resources and antenna transmitting power are not increased; by utilizing the plurality of antennas, the range of the electronic equipment for receiving signal frequency bands can be increased, so that the electronic equipment can receive signals of more frequency bands, the normal operation of the electronic equipment is ensured, and the application range of the electronic equipment is enlarged.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a read-only memory or a random access memory.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present application and is not to be construed as limiting the scope of the present application, so that the present application is not limited thereto, and all equivalent variations and modifications can be made to the present application.
Claims (10)
1. A radio frequency device, comprising: a middle frame and a radio frequency circuit;
the middle frame comprises at least nine discontinuous middle frame segments, and gaps are arranged among the middle frame segments; the middle frame segments comprise a first middle frame segment, a second middle frame segment, a third middle frame segment, a fourth middle frame segment, a fifth middle frame segment, a sixth middle frame segment, a seventh middle frame segment, an eighth middle frame segment and a ninth middle frame segment, and feeding points and grounding points are arranged on the middle frame segments;
the first middle frame segment is used for transmitting low-frequency main set radio frequency signals and 5G MIMO signals of a first frequency band;
the second middle frame segment is used for transmitting a middle-high frequency band main set radio frequency signal and a 5G MIMO signal of a second frequency band;
the third middle frame segment is used for transmitting the 5G MIMO signal of the first frequency band and the 5G MIMO signal of the second frequency band;
the fourth middle frame segment is used for transmitting a UWB signal of a third frequency band;
the fifth middle frame segment is used for transmitting a GPS signal of an L5 frequency band and a UHF signal of a fourth frequency band;
the sixth middle frame segment is used for transmitting 5G MIMO signals of a second frequency band;
the seventh middle frame segment is used for transmitting a WiFiMIMO signal of a fifth frequency band;
the eighth middle frame segment is used for transmitting a GPS signal of an L1 frequency band, a Bluetooth signal of a sixth frequency band and a WiFi MIMO signal of the sixth frequency band;
the ninth middle frame segment is used for transmitting a master set radio frequency signal of a middle and high frequency band and a 5G MIMO signal of a second frequency band;
the radio frequency circuit is connected with the feed point and used for transmitting radio frequency signals through the middle frame segment.
2. The antenna layout scheme of claim 1 further comprising: an NFC antenna;
the NFC antenna is arranged in the middle frame;
the NFC antenna is used for receiving and transmitting NFC signals of a seventh frequency band.
3. The radio frequency device according to claim 1, further comprising: the antenna comprises a first coupling antenna, a second coupling antenna, a third coupling antenna and a fourth coupling antenna;
the first coupling antenna is arranged on the inner side of the third middle frame segment and used for coupling with the third middle frame segment after feeding;
the second coupling antenna is arranged on the inner side of the fourth middle frame segment and used for coupling with the fourth middle frame segment after feeding;
the third coupling antenna is arranged on the inner side of the sixth middle frame segment and used for coupling with the sixth middle frame segment after feeding;
and the fourth coupling antenna is arranged on the inner side of the eighth middle frame segment and is used for coupling with the eighth middle frame segment after feeding.
4. The radio frequency device according to claim 1, further comprising: the circuit comprises a first switch, a second switch, a third switch, a fourth switch, a first matching network circuit, a second matching network circuit, a third matching network circuit and a fourth matching network circuit;
a first loading point is arranged on the first middle frame segment, the first loading point is connected with the first matching network circuit, and the first matching network circuit is grounded through the first switch;
a second loading point is arranged on the second middle frame segment, the second loading point is connected with the second matching network circuit, and the second matching network circuit is grounded through the second switch;
a third loading point is arranged on the fifth middle frame segment, the third loading point is connected with the third switch, the third switch is connected with the third matching network circuit, and the third matching network circuit is connected with the radio frequency circuit;
and a fourth loading point is arranged on the ninth middle frame segment, the fourth loading point is connected with the fourth matching network circuit, and the fourth matching network circuit is grounded through the fourth switch.
5. The radio frequency device according to claim 1, further comprising: a control unit;
the control unit is configured to, when the current transmission mode is a 5GMIMO transmission mode of the second frequency band,
selecting the second middle frame segment, the third middle frame segment, the sixth middle frame segment and the ninth middle frame segment to form a first middle frame segment set;
instruct the radio frequency circuitry to transmit the 5G MIMO signals of the second frequency band over the first set of mid-frame segments.
6. The radio frequency device according to claim 5, wherein the control unit is further configured to:
when the current transmission mode is a 5G MIMO transmission mode of the first band,
selecting the first middle frame segment and the third middle frame segment to form a second middle frame segment set;
instruct the radio frequency circuitry to transmit the 5G MIMO signals of the first frequency band over the second set of mid-frame segments.
7. The radio frequency device according to claim 5, wherein the control unit is further configured to;
when the current transmission mode is the WiFi transmission mode,
selecting the seventh middle frame segment and the eighth middle frame segment to combine into a third middle frame segment set;
and instructing the radio frequency circuit to transmit the WiFiMIMO signal of the fifth frequency band through the third middle frame segment set.
8. The radio frequency device according to claim 5, wherein the control unit is further configured to:
when the current transmission mode is the bluetooth transmission mode,
selecting the eighth middle frame segment;
and instructing the radio frequency circuit to transmit the Bluetooth radio frequency signal of the sixth frequency band through the eighth middle frame segment.
9. The radio frequency device according to claim 5, wherein the control unit is further configured to control the radio frequency device according to the received signal
When the current transmission mode is the ultra-wideband transmission mode,
selecting the fourth middle frame segment;
and instructing the radio frequency circuit to transmit the UWB radio frequency signal of the third frequency band through the fourth middle frame segment.
10. An electronic device, characterized in that it is provided with a radio frequency device according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011423978.0A CN112736421A (en) | 2020-12-08 | 2020-12-08 | Radio frequency device and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011423978.0A CN112736421A (en) | 2020-12-08 | 2020-12-08 | Radio frequency device and electronic equipment |
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| CN112736421A true CN112736421A (en) | 2021-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011423978.0A Withdrawn CN112736421A (en) | 2020-12-08 | 2020-12-08 | Radio frequency device and electronic equipment |
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