CN111464244A - Radio frequency circuit, detection method and electronic device - Google Patents
Radio frequency circuit, detection method and electronic device Download PDFInfo
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- CN111464244A CN111464244A CN202010209704.5A CN202010209704A CN111464244A CN 111464244 A CN111464244 A CN 111464244A CN 202010209704 A CN202010209704 A CN 202010209704A CN 111464244 A CN111464244 A CN 111464244A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
- H04B17/102—Power radiated at antenna
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
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Abstract
The invention provides a radio frequency circuit, a detection method and an electronic device, wherein the radio frequency circuit comprises: a first antenna; a second antenna; a transceiver unit having a transmit port and a power detection port; a switching circuit configured to enable one of the first or second antennas to communicate with the transmit port and the other of the first or second antennas to communicate with the power detection port. The radio frequency circuit, the detection method and the electronic device can realize simultaneous receiving and transmitting work, so that the evaluation of the receiving and transmitting functions of signals and/or circuits can be completed by utilizing the radio frequency circuit, the production cost is reduced, and remote detection can be realized.
Description
Technical Field
The invention relates to the technical field of electronics, in particular to a radio frequency circuit, a detection method and an electronic device.
Background
WiFi is widely used with the development of electronic technology, for example, mobile phones and computers are generally equipped with WiFi function. In order to increase the load capacity of WiFi data, MIMO (multiple input multiple output) technology is developed, however, this technology needs to configure multiple antennas, which is costly. At present, in a WiFi circuit which does not support MIMO, the wireless performance is often improved through the receiving diversity of double antennas. The quality of wireless performance has a great impact on the usage experience of the product. Therefore, the WiFi circuit is tested at the time of product manufacture to ensure good wireless performance. At present, in the common practice, a meter is used for performing a performance test on an open-loop WiFi circuit in batch production, which can detect the wireless performance in the production process, but the production test needs the meter, and when a user uses the WiFi circuit, because the transmitting part of the WiFi circuit is in a completely black box state for a manufacturer, the WiFi circuit is not monitored, the problem is remotely solved without any trouble, and the WiFi circuit fault of a product or the WiFi problem caused by a router factor or other factors cannot be confirmed when the WiFi is in a problem.
Therefore, it is necessary to provide a WiFi rf circuit, a detection method and an electronic device to solve the above problems.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a radio frequency circuit, a detection method and an electronic device, which utilize the existing hardware of double antennas in the circuit to transform a switch circuit, thereby realizing the closed loop of a transmitting part and a receiving part of the circuit, and solving the problem of pain points of production test and background monitoring when a user uses the circuit with low cost and high efficiency.
To overcome the problems existing at present, the present invention provides, in one aspect, a radio frequency circuit, including:
a first antenna;
a second antenna;
a transceiver unit having a transmit port and a power detection port;
a switching circuit configured to enable one of the first or second antennas to communicate with the transmit port and the other of the first or second antennas to communicate with the power detection port.
In an embodiment of the present invention, the switch circuit includes a double-pole double-throw switch, the double-pole double-throw switch includes a first access terminal, a second access terminal, a third access terminal, a fourth access terminal, and a control terminal, the first access terminal is connected to the first antenna, the second access terminal is connected to the second antenna, the third access terminal is connected to the transmitting port, the fourth access terminal is connected to the power detecting port, and the control terminal is connected to a main control unit, wherein the main control unit is integrated with the transceiver unit or separately provided.
In an embodiment of the present invention, when receiving the self-checking instruction, the main control unit turns on the first access terminal/the second access terminal and the third access terminal to transmit a signal through the first antenna/the second antenna, turns on the second access terminal/the first access terminal and the fourth access terminal to receive the signal through the second antenna/the first antenna, and completes the evaluation of the transceiving function of the signal and/or the circuit according to the received signal.
Another aspect of the present invention also provides a detection method for detecting a signal of a radio frequency circuit according to an embodiment of the present invention, the method including:
receiving a signal detection instruction;
controlling a switch circuit in the radio frequency circuit to enable a transmitting port of the transceiving unit to be conducted with the first antenna/the second antenna according to the signal detection instruction, and transmitting signals through the first antenna/the second antenna;
controlling a switch circuit in the radio frequency circuit to enable a power detection port of the transceiving unit to be conducted with the second antenna/the first antenna according to the signal detection instruction, and receiving signals through the second antenna/the first antenna;
signal and/or circuit transceiver function evaluation is performed based on the received signal.
In one embodiment of the invention, the signal evaluation comprises determining a signal-to-noise ratio and/or a signal reception level of the received signal.
In one embodiment of the present invention, further comprising:
and sending the signal and/or the result of the circuit transceiving function evaluation to a server to determine whether the WiFi radio frequency circuit has a problem.
In one embodiment of the invention, the signal detection instruction is triggered by an option of the user operating the device.
In one embodiment of the invention, the signal detection instruction is sent by a server.
The invention also provides an electronic device which comprises the WiFI radio frequency circuit.
In one embodiment of the present invention, the electronic device includes a mobile phone, an earphone, a sound box, a computer, or an internet of things device with wireless signal transmitting and receiving functions.
According to the radio frequency circuit, the detection method and the electronic device of the invention, the switch circuit in the radio frequency circuit is constructed to enable one of the double antennas to be communicated with the transmitting port of the transceiving unit, wherein the other antenna is communicated with the power detection port of the transceiving unit, so that a signal can be transmitted through one antenna and received through the other antenna, thereby realizing the simultaneous operation of closed loop and transceiving of the transmitting part and the receiving part of the circuit, establishing a closed loop chain from the transmitting port to the transmitting antenna, from the transmitting antenna to the receiving antenna and from the receiving antenna to the power detection port, effectively utilizing the receiving demodulation capacity of the transceiving unit to accurately evaluate the transmitting end and the transmitting signal thereof, replacing the radio frequency performance test based on instruments in a production link, reducing the production cost and supporting the realization of full inspection of the transmitting part and the receiving part of the circuit, and the inspection result is reported to the cloud background, thereby supporting the realization of remote inspection.
Drawings
The following drawings of the invention are included to provide a further understanding of the invention. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
In the drawings:
FIG. 1 shows a schematic block diagram of a WiFi radio circuit in accordance with an embodiment of the present invention;
FIG. 2 is a detailed schematic block diagram of the WiFi radio circuit shown in FIG. 1;
FIG. 3 is another detailed schematic block diagram of the WiFi radio frequency circuit shown in FIG. 1;
FIG. 4 shows a schematic flow diagram of a detection method according to an embodiment of the invention;
fig. 5 shows a schematic block diagram of an electronic device according to an embodiment of the invention.
1 first antenna
2 second antenna
3 Wireless receiving and transmitting unit
4 transmitting port
5 Power detection Port
6 switching circuit
7WiFi Main control Unit
100WiFI radio frequency circuit
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, exemplary embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a subset of embodiments of the invention and not all embodiments of the invention, with the understanding that the invention is not limited to the example embodiments described herein. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the invention described herein without inventive step, shall fall within the scope of protection of the invention.
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.
It is to be understood that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of the associated listed items.
In order to provide a thorough understanding of the present invention, detailed steps and detailed structures will be set forth in the following description in order to explain the present invention. The following detailed description of the preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.
Before the introduction, the meaning of the terms in this text is explained.
Wifi: a near field communication technique operating in an unlicensed frequency band.
MIMO: multiple input multiple output, a method for improving communication data bearing.
RSSI: the signal reception level.
S/N: signal-to-noise ratio, a physical quantity that determines the quality of signal demodulation.
FIG. 1 shows a schematic block diagram of a WiFi radio circuit in accordance with an embodiment of the present invention; FIG. 2 is a detailed schematic block diagram of the WiFi radio circuit shown in FIG. 1; fig. 3 is another detailed schematic block diagram of the WiFi radio circuit shown in fig. 1.
First, as shown in fig. 1 and fig. 2, the WiFi rf circuit 100 disclosed in this embodiment includes a first antenna 1, a second antenna 2, a WiFi transceiver unit 3, and a switch circuit 6.
The first antenna 1 and the second antenna 2 may employ various suitable antenna structures, such as microstrip antennas and the like. The first antenna 1 and the second antenna 2 are used for transmitting or receiving WiFi signals.
The WiFi transceiving unit 3 has a transmission port 4 and a power detection port 5. The WiFi transceiving unit 3 may adopt various suitable WiFi transceiving chips or devices. The WiFi transceiving unit 3 not only has the transmitting port 4 and the power detecting port 5, but also has a receiving port and other ports, when the WiFi rf circuit 100 disclosed in this embodiment is used for transmitting and receiving in the normal mode, the first antenna 1 and the second antenna 2 will be connected to the access port of the WiFi transceiving unit 3 through the switch circuit 6 and other switch devices or circuits during the receiving process, so as to receive the WiFi signal. The transmitting port 4 is used for outputting the radio frequency signal generated by the WiFi transceiving unit 3 to be transmitted through the first antenna 1 or the second antenna 2. The power detection port 5 is used for receiving signals received by the first antenna 1 or the second antenna 2, so as to evaluate the transceiving functions of the signals and the WiFi circuit according to the received signals. It should be understood that power detection ports including, but not limited to, a receiving port, a power detection port, etc., i.e., a receiving port of a WiFi transceiver device or other suitable port, may also be used as the power detection port in this embodiment.
The switching circuit 6 is configured to enable one of the first antenna 1 or the second antenna 2 to communicate with the transmission port 4, and the other of the first antenna 1 or the second antenna 2 to communicate with the power detection port 5. Illustratively, in the present embodiment, the switch circuit 6 is configured to communicate the second antenna 2 with the transmission port 4 to transmit signals through the second antenna 2 when transmitting, and communicate the first antenna 1 with the power detection port 5 to input the signals of the second antenna 2 coupled with the first antenna 1 to the power detection port 5 for signal and/or WiFi circuit transceiving function evaluation.
As an example, the switching circuit 6 includes a double-pole double-throw switch, and a suitable double-pole double-throw switch chip may be used for the double-pole double-throw switch. Exemplarily, as shown in fig. 2, the double-pole double-throw switch includes a first access end a, a second access end B, a third access end C, a fourth access end D, and a control end E, where the first access end a is connected to the first antenna 1, the second access end B is connected to the second antenna 2, the third access end C is connected to the transmitting port 4, the fourth access end D is connected to the power detecting port 5, and the control end E is connected to the WiFi main control unit 7, and the state of the double-pole double-throw switch can be controlled by the WiFi main control unit 7.
Exemplarily, the WiFi main control unit 7, when receiving the self-check instruction, makes the first access end a/the second access end B and the third access end C conducted, so as to transmit a signal through the first antenna 1/the second antenna 2, makes the second access end B/the first access end a and the fourth access end D conducted, so as to receive the signal through the second antenna 2/the first antenna 1, and completes the evaluation of the transceiving function of the signal and/or the WiFi circuit according to the received signal.
Next, as shown in fig. 3, the difference between the embodiment shown in fig. 3 and the embodiment shown in fig. 2 is that, in the embodiment shown in fig. 2, the WiFi transceiver unit 3 and the WiFi main control unit 7 are separately arranged, and each employs an independent control device, whereas in the embodiment shown in fig. 3, the WiFi transceiver unit and the WiFi main control unit are integrally arranged in one control device, that is, the WiFi main control unit 7 in fig. 3 has transceiving and main control functions, and the working principle and flow of the embodiment shown in fig. 3 are similar to those of the embodiment shown in fig. 2, and are not described again here.
According to the WiFi radio-frequency circuit of the embodiment, the switch circuit in the WiFi radio-frequency circuit is constructed to enable one of the double WiFi antennas to be communicated with the transmitting port of the WiFi transceiving unit, the other antenna is communicated with the power detection port of the WiFi transceiving unit, so that a signal can be transmitted through one antenna and received through the other antenna, the simultaneous operation of closed loop and transceiving of the transmitting part and the receiving part of the WiFi circuit is realized, a closed loop chain from the transmitting port to the transmitting antenna, from the transmitting antenna to the receiving antenna and from the receiving antenna to the power detection port is established, the receiving demodulation capacity of the transceiving unit is effectively utilized to carry out accurate evaluation on the transmitting end and the transmitting signal of the transmitting end, the meter-based radio-frequency performance test of a production link can be replaced, the production cost is reduced, and the full inspection of the transmitting part and the receiving part of the WiFi circuit can be supported, and the inspection result is reported to the cloud background, thereby supporting the realization of remote inspection.
It should be understood that although the WiFi rf circuit is illustrated in the present embodiment, the rf circuit of the present embodiment may also be applied to the following wireless networks in addition to WiFi: BT (bluetooth), Zigbee, Zwave, cellular (cellular network), the radio frequency circuit of these networks may also adopt the similar structure of the WiFi radio frequency circuit of this embodiment, so as to achieve the same effect.
The following describes a process/method for performing self-test on the WiFi rf circuit according to the present embodiment with reference to fig. 4.
Fig. 4 shows a schematic flow diagram of a detection method according to an embodiment of the invention.
As shown in fig. 4, the detection method disclosed in this embodiment includes:
And step 303, controlling a switch circuit in the WiFi radio frequency circuit to enable a power detection port of the WiFi transceiver unit to be connected with the second antenna/the first antenna according to the signal detection instruction, and receiving a signal through the second antenna/the first antenna. For example, taking the WiFi rf circuit shown in fig. 1 or fig. 2 as an example, after the second antenna 2 transmits a signal, the first antenna 1 couples the signal of the second antenna 2, and the WiFi main control unit 7 controls the switch circuit 6 to conduct the first antenna 1 and the power detection port 5, so as to receive the signal coupled by the first antenna 1.
And step 304, evaluating the transceiving function of the signal and/or the WiFi circuit according to the received signal. The signal evaluation comprises determining a signal-to-noise ratio and/or a signal reception level of the received signal. For example, taking the WiFi rf circuit shown in fig. 1 or fig. 2 as an example, after the wireless transceiver unit 3 receives the signal received by the power detection port 5, the signal-to-noise ratio and/or the signal reception level of the signal may be determined according to parameters such as the strength of the signal, so as to evaluate the signal, and determine whether the WiFi rf circuit has a problem according to the evaluation result.
And after signal evaluation is finished, sending the signal and/or the result of WiFi circuit transceiving function evaluation to a server so that the server can determine whether the WiFi radio frequency circuit has a problem according to the signal evaluation result.
It should be understood that although the embodiment is described by taking the example of receiving the server instruction for detection, in other embodiments, the detection may be performed by the user operating the device, and the step S305 may not be included in this case.
Yet another embodiment of the present invention provides an electronic device including a WiFi radio frequency circuit according to an embodiment of the present invention and an electronic component connected to the WiFi radio frequency circuit. The electronic component may be any electronic component such as a discrete device and an integrated circuit. The electronic device of the embodiment may be any electronic product or device such as a mobile phone, a tablet computer, a notebook computer, a netbook, a game console, a television, a VCD, a DVD, a navigator, a camera, a video camera, a recording pen, an MP3, an MP4, a PSP, a sound, an earphone, and an internet of things device with a WiFi function.
Fig. 5 shows an example of a mobile phone. The exterior of the cellular phone 400 is provided with a display portion 402, operation buttons 403, an external connection port 404, a speaker 405, a microphone 406, and the like, which are included in a housing 401.
According to the WiFi radio frequency circuit, the detection method and the electronic device, the switch circuit in the WiFi radio frequency circuit is constructed to enable one of the double WiFi antennas to be communicated with the transmitting port of the WiFi transceiving unit, the other of the double WiFi antennas is communicated with the power detection port of the WiFi transceiving unit, so that a signal can be transmitted through one of the antennas and received through the other antenna, the closed loop and transceiving of the transmitting part and the receiving part of the WiFi circuit can be simultaneously operated, a closed loop chain is established, the signal is transmitted to the transmitting antenna from the transmitting port, transmitted to the receiving antenna from the transmitting antenna and transmitted to the power detection port from the receiving antenna, the receiving demodulation capacity of the transceiving unit is effectively utilized to accurately evaluate the transmitting end and the transmitted signal thereof, the meter-based radio frequency performance test of a production link can be replaced, the production cost is reduced, and the full inspection of the transmitting part and the receiving part of the WiFi circuit can be supported, and the inspection result is reported to the cloud background, thereby supporting the realization of remote inspection.
It should be appreciated that in the description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the invention and aiding in the understanding of one or more of the various inventive aspects. However, the method of the present invention should not be construed to reflect the intent: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
It will be understood by those skilled in the art that all of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where such features are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.
The above description is only for the specific embodiment of the present invention or the description thereof, and the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the protection scope of the present invention. The protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A radio frequency circuit, comprising:
a first antenna;
a second antenna;
a transceiver unit having a transmit port and a power detection port;
a switching circuit configured to enable one of the first or second antennas to communicate with the transmit port and the other of the first or second antennas to communicate with the power detection port.
2. The rf circuit of claim 1, wherein the switch circuit comprises a double-pole double-throw switch, the double-pole double-throw switch comprises a first access terminal, a second access terminal, a third access terminal, a fourth access terminal, and a control terminal, the first access terminal is connected to the first antenna, the second access terminal is connected to the second antenna, the third access terminal is connected to the transmitting port, the fourth access terminal is connected to the power detecting port, and the control terminal is connected to a main control unit, wherein the main control unit is integrated with the transceiver unit or separately provided.
3. The rf circuit according to claim 2, wherein the main control unit, when receiving the self-checking command, turns on the first/second access terminal and the third access terminal to transmit a signal through the first/second antenna, turns on the second/first access terminal and the fourth access terminal to receive a signal through the second/first antenna, and completes the evaluation of the transceiving function of the signal and/or the circuit according to the received signal.
4. A method for detecting a signal of the WiFi rf circuit of claim 1 or 2, the method comprising:
receiving a signal detection instruction;
controlling a switch circuit in the radio frequency circuit to enable a transmitting port of the transceiving unit to be conducted with the first antenna/the second antenna according to the signal detection instruction, and transmitting signals through the first antenna/the second antenna;
controlling a switch circuit in the radio frequency circuit to enable a power detection port of the transceiving unit to be conducted with the second antenna/the first antenna according to the signal detection instruction, and receiving signals through the second antenna/the first antenna;
signal and/or circuit transceiver function evaluation is performed based on the received signal.
5. The detection method according to claim 4, wherein the signal evaluation comprises determining a signal-to-noise ratio and/or a signal reception level of the received signal.
6. The detection method according to claim 4, further comprising:
and sending the signal and/or the result of the circuit transceiving function evaluation to a server to determine whether the radio frequency circuit has a problem.
7. The detection method according to claim 4, wherein the signal detection instruction is triggered by an option of a user operating a device.
8. The detection method according to claim 6, wherein the signal detection instruction is transmitted by a server.
9. An electronic device, comprising: the radio frequency circuit of any of claims 1-3.
10. The electronic device according to claim 9, wherein the electronic device comprises a mobile phone, a headset, a sound box, a computer or an internet of things device with wireless signal transmitting and receiving functions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010209704.5A CN111464244A (en) | 2020-03-23 | 2020-03-23 | Radio frequency circuit, detection method and electronic device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010209704.5A CN111464244A (en) | 2020-03-23 | 2020-03-23 | Radio frequency circuit, detection method and electronic device |
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| CN111464244A true CN111464244A (en) | 2020-07-28 |
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| CN202010209704.5A Pending CN111464244A (en) | 2020-03-23 | 2020-03-23 | Radio frequency circuit, detection method and electronic device |
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