CN114257264B - Radio frequency antenna circuit, PCB and mobile terminal - Google Patents
Radio frequency antenna circuit, PCB and mobile terminal Download PDFInfo
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- CN114257264B CN114257264B CN202111536237.8A CN202111536237A CN114257264B CN 114257264 B CN114257264 B CN 114257264B CN 202111536237 A CN202111536237 A CN 202111536237A CN 114257264 B CN114257264 B CN 114257264B
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- radio frequency
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- throw switch
- pole double
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
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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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/09—Use of materials for the conductive, e.g. metallic pattern
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/18—Printed circuits structurally associated with non-printed electric components
- H05K1/181—Printed circuits structurally associated with non-printed electric components associated with surface mounted components
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The embodiment of the application provides a radio frequency antenna circuit, a PCB and a mobile terminal. The radio frequency antenna circuit comprises a radio frequency chip, a feeder line, a single-pole double-throw switch, an antenna, a radio frequency signal test circuit and a control circuit; the radio frequency chip is electrically connected with the feeder, the feeder is electrically connected with the fixed end of the single-pole double-throw switch, and the movable end of the single-pole double-throw switch is connected with the radio frequency signal input end of the radio frequency signal testing circuit and the antenna; the control circuit is respectively and electrically connected with the single-pole double-throw switch and the radio frequency signal testing circuit; when the control signal output by the control circuit to the single-pole double-throw switch is a high-level signal, the single-pole double-throw switch conducts the electrical connection between the feeder line and the antenna; when the test instrument for testing the radio frequency signals is connected to the radio frequency signal test circuit, the control signal output by the control circuit to the single-pole double-throw switch is changed from a high-level signal to a low-level signal, and the low-level signal triggers the single-pole double-throw switch to conduct the electric connection between the feeder line and the radio frequency signal test circuit.
Description
Technical Field
The application relates to the technical field of antenna circuits, in particular to a radio frequency antenna circuit, a PCB (printed circuit board) and a mobile terminal.
Background
In the radio frequency antenna circuit design of a conventional mobile terminal, a radio frequency connector is connected in series to a radio frequency feed line, and radio frequency signals of a PCB (printed circuit board) are tested through the radio frequency connector. However, rf connectors have drawbacks in use, such as being vulnerable to damage during testing. When the radio frequency connector is damaged, the radio frequency signal of the PCB cannot be tested, so that the overall machine authentication of the mobile terminal is affected, and the time cost is increased.
Accordingly, the prior art has drawbacks and needs to be improved and developed.
Disclosure of Invention
The embodiment of the application provides a radio frequency antenna circuit, a PCB and a mobile terminal, which are connected with a radio frequency signal testing circuit and an antenna through a single-pole double-throw switch, so that the radio frequency performance of the PCB can be tested, and the time for complete machine authentication of the mobile terminal is saved.
The embodiment of the application provides a radio frequency antenna circuit, which comprises a radio frequency chip, a feeder line, a single-pole double-throw switch, an antenna, a radio frequency signal test circuit and a control circuit;
the radio frequency chip is electrically connected with the feeder, the feeder is electrically connected with the fixed end of the single-pole double-throw switch, and the movable end of the single-pole double-throw switch is connected with the radio frequency signal input end of the radio frequency signal testing circuit and the antenna;
the control circuit is respectively and electrically connected with the single-pole double-throw switch and the radio frequency signal testing circuit;
when the control signal output by the control circuit to the single-pole double-throw switch is a high-level signal, the single-pole double-throw switch conducts the electrical connection between the feeder line and the antenna;
when a test instrument for testing radio frequency signals is connected to the radio frequency signal test circuit, the control signal output by the control circuit to the single-pole double-throw switch is changed from a high-level signal to a low-level signal, and the low-level signal triggers the single-pole double-throw switch to conduct the electrical connection between the feeder line and the radio frequency signal test circuit.
In the radio frequency antenna line according to this embodiment, a capacitor is disposed on the feeder line.
In the radio frequency antenna circuit of this embodiment, the capacitance of the capacitor is greater than or equal to 33pf.
In the radio frequency antenna circuit of this embodiment, an inductor is disposed at an end of the control circuit electrically connected to the radio frequency signal testing circuit, and the inductor is configured to prevent radio frequency signals on the radio frequency signal testing circuit from being strung into the control circuit.
In the radio frequency antenna line of this embodiment, the inductance of the inductor is greater than 100nh.
In this embodiment, the test instrument includes a grounded line inside, and when the test instrument accesses the radio frequency signal test line, the control signal output from the control line to the single pole double throw switch is changed from a high level signal to a low level signal.
The embodiment of the application also provides a PCB board, which comprises a power management chip and the radio frequency antenna circuit in the embodiment;
the power management chip is electrically connected with the control circuit and is used for providing high-level signals for the control circuit.
In the PCB board of this embodiment, a radio frequency signal test point is provided on the PCB board;
the radio frequency signal test point is electrically connected with a radio frequency signal output end of the radio frequency signal test line;
the radio frequency signal test point is used for being electrically connected with a test instrument for testing radio frequency signals.
In the PCB board of this embodiment, a radio frequency cable is welded on the radio frequency signal test point;
the radio frequency signal test point is electrically connected with the test instrument through the radio frequency cable.
The embodiment of the application also provides a mobile terminal, which comprises a shell and a PCB, wherein the PCB is arranged in the shell, and the PCB is the PCB in the embodiment.
The embodiment of the application is connected with the radio frequency signal testing circuit and the antenna through the single-pole double-throw switch, the control circuit is respectively electrically connected with the single-pole double-throw switch and the radio frequency signal testing circuit through the control circuit, and particularly, when the control signal output by the control circuit to the single-pole double-throw switch is a high-level signal, the single-pole double-throw switch conducts the electrical connection between the feeder line and the antenna, and when a test instrument for testing the radio frequency signal is connected to the radio frequency signal testing circuit, the control signal output by the control circuit to the single-pole double-throw switch is changed from the high-level signal to the low-level signal, and the low-level signal triggers the single-pole double-throw switch to conduct the electrical connection between the feeder line and the radio frequency signal testing circuit, so that the radio frequency signal sent by the radio frequency chip can be emitted through the single-pole double-throw switch, and the radio frequency signal sent by the radio frequency chip can be tested.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the application and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a radio frequency antenna circuit according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a mobile terminal 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 accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present 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" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the 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.
The following disclosure provides many different embodiments, or examples, for implementing different features of the application. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
An embodiment of the present application provides a radio frequency antenna circuit 200. Referring to fig. 1, the radio frequency antenna circuit 200 includes a radio frequency chip 10, a feeder 20, a single pole double throw switch 30, an antenna 40, a radio frequency signal test circuit 50, and a control circuit 60.
The single pole double throw switch 30 is composed of a movable end and a stationary end, wherein the movable end is called a "knife". The radio frequency chip 10 is used as a feed source and can output radio frequency signals.
The rf chip 10 is electrically connected to the feeder 20, the feeder 20 is electrically connected to the stationary end of the single pole double throw switch 30, and the movable end of the single pole double throw switch 30 is connected to the rf signal input end of the rf signal testing circuit 50 and the antenna 40.
Wherein radio frequency signals are transmitted via a feeder 20. The radio frequency signal emitted from the radio frequency chip 10 can be transmitted to the antenna 40 through the feeder line 20 and radiated through the antenna 40; alternatively, the radio frequency signal emitted from the radio frequency chip 10 may be transmitted to the radio frequency signal test line 50 through the feeder line 20.
The control circuit 60 is electrically connected to the single pole double throw switch 30 and the RF signal testing circuit 50, respectively.
When the control signal output from the control circuit 60 to the single pole double throw switch 30 is a high level signal, the single pole double throw switch 30 turns on the electrical connection between the feeder 20 and the antenna 40.
That is, when the control signal output from the control circuit 60 to the single pole double throw switch 30 is a high level signal, the radio frequency signal emitted from the radio frequency chip 10 is transmitted to the antenna 40 through the feeder line 20 and radiated through the antenna 40. At this time, the single pole double throw switch 30 is not conductive with the RF signal test line 50.
When a test meter for testing radio frequency signals is connected to the radio frequency signal test circuit 50, the control signal output from the control circuit 60 to the single pole double throw switch 30 is changed from a high level signal to a low level signal, and the low level signal triggers the single pole double throw switch 30 to conduct the electrical connection between the feeder line 20 and the radio frequency signal test circuit 50.
That is, when the control signal outputted from the control line 60 to the single pole double throw switch 30 is changed from the high level signal to the low level signal, the single pole double throw switch 30 is conducted with the radio frequency signal testing line 50, and the radio frequency signal emitted from the radio frequency chip 10 is transmitted to the radio frequency signal testing line 50 through the feeder line 20. At this time, the single pole double throw switch 30 is not conductive with the antenna 40.
Wherein a high level signal such as 1.8V or 2.8V.
The embodiment of the application uses the single-pole double-throw switch 30, so that the influence of the offset to the impedance of the feeder line 20 caused by the radio frequency signal test line 50 is avoided, the single-pole double-throw switch 30 is switched inside, and when the radio frequency signal test line 50 is disconnected, the influence of the part of the line on the feeder line 20 is avoided. In addition, the scheme can save the radio frequency connector, avoid the board scrapping caused when the radio frequency connector is damaged (when the radio frequency connector is damaged, the test interface is not available and is usually difficult to maintain, so that the board can be abandoned), reduce the waste of resources and materials, and save a large number of repeated works caused by the scrapping of the board. On the other hand, the circuit is simple, the control is automatic, a complex detection and identification circuit is not needed, the automatic switching is realized, and the application is easy.
In some embodiments, a capacitor 70 is provided on the feed line 20.
Wherein the capacitor 70 is used to isolate other devices on the feeder 20 that are connected in parallel to GND, preventing these devices from affecting the control signal output by the control line 60 to the single pole double throw switch 30. Wherein the capacitor 70 and the single pole double throw switch 30 are as close together as possible without other devices therebetween.
In some embodiments, the capacitance of the capacitor is greater than or equal to 33pf.
In some embodiments, an inductor 80 is disposed at an end of the control circuit 60 electrically connected to the rf signal testing circuit 50, and the inductor 80 is used to prevent rf signals on the rf signal testing circuit 50 from being connected to the control circuit 60.
The inductor 80 is used to prevent the rf signal on the rf signal test line 50 from being connected to the control line 60, thereby causing rf signal loss.
In some embodiments, the inductor has an inductance magnitude greater than 100nh.
In some embodiments, the test meter includes a line connected to ground, and when the test meter is connected to the RF signal test line 50, the control signal output from the control line 60 to the single pole double throw switch 30 will change from a high signal to a low signal.
That is, when the radio frequency signal test line 50 and the test meter are not connected, the control signal output by the control line 60 to the single pole double throw switch 30 is always a high level signal (because the parallel device for pulling down the control signal is not provided when the electrical connection between the test meter and the radio frequency signal test line 50 is disconnected, the control signal received by the single pole double throw switch 30 is still at a high level); when a test meter is connected to the RF signal test line 50, the control signal output from the control line 60 to the single pole double throw switch 30 will change from a high signal to a low signal.
In summary, in the radio frequency antenna circuit 200 provided in the embodiment of the application, the single pole double throw switch 30 is connected with the radio frequency signal testing circuit 50 and the antenna 40, the control circuit 60 is electrically connected with the single pole double throw switch 30 and the radio frequency signal testing circuit 50 respectively through the control circuit 60, and the single pole double throw switch 30 is controlled through the control circuit 60, specifically, when the control signal output from the control circuit 60 to the single pole double throw switch 30 is a high level signal, the single pole double throw switch 30 conducts the electrical connection between the feeder 20 and the antenna 40, when the test instrument for testing radio frequency signals is connected to the radio frequency signal testing circuit 50, the control signal output from the control circuit 60 to the single pole double throw switch 30 is changed from a high level signal to a low level signal, and the low level signal triggers the single pole double throw switch 30 to conduct the electrical connection between the feeder 20 and the radio frequency signal testing circuit 50, so that the radio frequency signals sent by the radio frequency chip 10 can be emitted by the single pole double throw switch 30, and the radio frequency signals sent by the radio frequency chip 10 can be tested, and the time for authentication of the mobile terminal is saved.
The embodiment of the application provides a PCB 90, and the PCB 90 includes a power management chip and the rf antenna circuit 200 of the above embodiment.
The power management chip is electrically connected to the control circuit 60, and the power management chip 100 is used for providing a high level signal to the control circuit 60.
Wherein, the power management chip can be arranged on the PCB 90 by means of surface mount soldering. A high level signal such as 1.8V or 2.8V.
In some embodiments, the PCB 90 has a radio frequency signal test point disposed thereon;
the rf signal test point is electrically connected to the rf signal output end of the rf signal test circuit 50;
the radio frequency signal test point is used for being electrically connected with a test instrument for testing radio frequency signals.
In some embodiments, the RF signal test point is welded with an RF cable;
the radio frequency signal test point is electrically connected with the test instrument through the radio frequency cable.
The radio frequency signal test point can also be conducted through the clamp thimble so as to be electrically connected with the test instrument.
The embodiment of the application also provides a mobile terminal. The mobile terminal can be a smart phone, a tablet computer and other devices. Referring to fig. 2, the mobile terminal 1000 includes a cover plate 100, a display 110, a PCB board 90, a battery 120, and a housing 130.
Wherein the cover plate 100 is mounted to the display screen 110 to cover the display screen 110. The cover plate 100 may be a transparent glass cover plate. For example, the cover plate 100 may be a glass cover plate made of a material such as sapphire.
The display 110 is mounted on the housing 130 to form a display surface of the mobile terminal 100. The display screen 110 may include a display area and a non-display area. The display area is used for displaying information such as images and texts. The non-display area does not display information. The bottom of the non-display area can be provided with functional components such as a fingerprint module, a touch control circuit and the like.
For example, the display 110 may also be a full screen, with only a display area and no non-display area. Wherein, functional components such as fingerprint module, touch-control circuit set up in the below of comprehensive screen. For example, the display 110 may also be a shaped screen.
Wherein the housing 130 may form an outer contour of the mobile terminal 100. The cover plate 100 may be fixed to the case 130, and the cover plate 100 and the case 130 form a closed space to accommodate the display 110, the PCB board 90, the battery 120, and the like.
In some embodiments, the housing 130 may be made of a metal material such as magnesium alloy, stainless steel, or the like. It should be noted that the material of the housing 130 according to the embodiment of the present application is not limited thereto, and other manners may be adopted, for example, the housing 130 may include a non-metal portion and a metal portion. For example, the housing 130 may also be a plastic housing. For example, the housing 130 may be a ceramic housing. For example, the housing 130 may also be a metal and plastic housing structure. The housing 130 may be manufactured using cold working, hot working, injection molding, extrusion molding, compression molding, blow molding, casting molding, and gas assist molding. For example, the material of the housing 130 is aluminum or aluminum alloy, and may be manufactured by cold working methods such as turning, milling, planing, drilling, drawing, etc. For example, the housing 130 may be made of a nonmetallic material by a nonmetallic material molding method such as injection molding.
The PCB 90 is installed in a closed space formed by the cover plate 100 and the case 130. The PCB 90 is also called a printed circuit board, and the PCB 90 may be a motherboard of the mobile terminal 100, and is an important element for providing electrical connection for electronic components in the mobile terminal, and may be divided into a single board, a double board, a four-board, a six-board, and other multi-layer circuit boards according to the number of layers of the circuit board. The PCB 90 generally includes a substrate, a metal coating, and a circuit layer. The PCB 90 may have one, two or more of a motor, a microphone, a speaker, an earphone interface, a usb interface, a front camera, a rear camera, a distance sensor, an ambient light sensor, a receiver, a processor, a radio frequency module, and other functional components integrated thereon.
The battery 120 is installed in a closed space formed by the cover plate 100 and the housing 130, and the battery 120 is electrically connected with the PCB 90 to supply power to the mobile terminal 100.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
The radio frequency antenna circuit, the PCB board and the mobile terminal provided by the embodiments of the present application are described in detail, and specific examples are applied to illustrate the principles and the embodiments of the present application, where the descriptions of the above embodiments are only used to help understand the technical solution and the core idea of the present application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (9)
1. The radio frequency antenna circuit is characterized by comprising a radio frequency chip, a feeder line, a single-pole double-throw switch, an antenna, a radio frequency signal testing circuit and a control circuit;
the radio frequency chip is electrically connected with the feeder, the feeder is electrically connected with the fixed end of the single-pole double-throw switch, and the movable end of the single-pole double-throw switch is connected with the radio frequency signal input end of the radio frequency signal testing circuit and the antenna;
the control circuit is respectively and electrically connected with the single-pole double-throw switch and the radio frequency signal testing circuit;
when the control signal output by the control circuit to the single-pole double-throw switch is a high-level signal, the single-pole double-throw switch conducts the electrical connection between the feeder line and the antenna;
when a test instrument for testing radio frequency signals is connected to the radio frequency signal test circuit, the control signal output by the control circuit to the single-pole double-throw switch is changed from a high-level signal to a low-level signal, and the low-level signal triggers the single-pole double-throw switch to conduct the electrical connection between the feeder line and the radio frequency signal test circuit;
and a capacitor is arranged on the feeder line.
2. The radio frequency antenna circuit of claim 1, wherein the capacitance of the capacitor is greater than or equal to 33pf.
3. The radio frequency antenna circuit of claim 1, wherein an inductor is disposed at an end of the control circuit that is electrically connected to the radio frequency signal test circuit, the inductor being configured to prevent radio frequency signals on the radio frequency signal test circuit from being strung into the control circuit.
4. The antenna circuit of claim 3, wherein the inductor has an inductance magnitude greater than 100nh.
5. The antenna circuit of claim 1 wherein the test meter includes a circuit connected to ground and wherein the control signal output by the control circuit to the single pole double throw switch is changed from a high level signal to a low level signal when the test meter is connected to the radio frequency signal test circuit.
6. A PCB board comprising a power management chip and the radio frequency antenna circuit of claims 1 to 5;
the power management chip is electrically connected with the control circuit and is used for providing high-level signals for the control circuit.
7. The PCB of claim 6, wherein a radio frequency signal test point is provided on the PCB;
the radio frequency signal test point is electrically connected with a radio frequency signal output end of the radio frequency signal test line;
the radio frequency signal test point is used for being electrically connected with a test instrument for testing radio frequency signals.
8. The PCB of claim 7, wherein a radio frequency cable is soldered to the radio frequency signal test point;
the radio frequency signal test point is electrically connected with the test instrument through the radio frequency cable.
9. A mobile terminal comprising a housing and a PCB mounted inside the housing, the PCB being as claimed in any one of claims 6 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111536237.8A CN114257264B (en) | 2021-12-15 | 2021-12-15 | Radio frequency antenna circuit, PCB and mobile terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111536237.8A CN114257264B (en) | 2021-12-15 | 2021-12-15 | Radio frequency antenna circuit, PCB and mobile terminal |
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| CN114257264A CN114257264A (en) | 2022-03-29 |
| CN114257264B true CN114257264B (en) | 2023-08-11 |
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