CN112953592B - Radio frequency circuit, electronic equipment and transmission method of radio frequency signal - Google Patents
Radio frequency circuit, electronic equipment and transmission method of radio frequency signal Download PDFInfo
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- CN112953592B CN112953592B CN202110089810.9A CN202110089810A CN112953592B CN 112953592 B CN112953592 B CN 112953592B CN 202110089810 A CN202110089810 A CN 202110089810A CN 112953592 B CN112953592 B CN 112953592B
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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
- H04B1/50—Circuits using different frequencies for the two directions of communication
- H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
- H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
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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
- H04B1/005—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0064—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with separate antennas for the more than one band
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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
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Abstract
The embodiment of the application relates to the technical field of communication, and discloses a radio frequency circuit, electronic equipment and a transmission method of radio frequency signals, wherein the radio frequency circuit comprises: a first transceiving path and a second transceiving path, wherein: the first transceiving channel is used for transmitting a first radio frequency signal belonging to a first frequency band of Long Term Evolution (LTE); the second transceiving channel is used for receiving a second radio frequency signal belonging to a second frequency band of the new air interface NR; the first transceiving channel comprises a signal suppression module, the signal suppression module is composed of N inductors and M capacitors and is used for suppressing harmonic signals generated by first radio-frequency signals so as to reduce interference of the harmonic signals generated by the first radio-frequency signals on second radio-frequency signals.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a radio frequency circuit, an electronic device, and a transmission method of a radio frequency signal.
Background
With the rapid development of communication technology, nowadays, radio frequency circuits in electronic devices are usually provided with a plurality of transceiving paths for transceiving radio frequency signals of different frequency bands, so as to implement transceiving of radio frequency signals of different frequency bands, thereby improving the range of transceiving signals of electronic devices.
However, in practice, when different transceiving paths simultaneously perform transceiving operations of radio frequency signals, the generated signals interfere with each other, thereby affecting the radio frequency performance of the electronic device.
Disclosure of Invention
The embodiment of the application discloses a wireless signal transceiving circuit, electronic equipment and a transmission method of radio frequency signals, which can reduce interference during signal transmission between different frequency bands and improve the radio frequency performance of the electronic equipment.
A first aspect of an embodiment of the present application discloses a radio frequency circuit, including a first transceiving path and a second transceiving path, wherein:
the first transceiving channel is used for transmitting a first radio frequency signal belonging to a first frequency band of Long Term Evolution (LTE);
the second transceiving channel is used for receiving a second radio frequency signal of a second frequency band belonging to a new air interface NR;
the first transceiving path comprises a signal suppression module, the signal suppression module is composed of N inductors and M capacitors and is used for suppressing harmonic signals generated by the first radio frequency signals so as to reduce interference of the harmonic signals on the second radio frequency signals, N is a positive integer, and M is a positive integer.
A second aspect of an embodiment of the present application discloses an electronic device, including the radio frequency circuit disclosed in the first aspect.
A third aspect of the embodiments of the present application discloses a method for transmitting a radio frequency signal, which is applied to an electronic device, and the method includes:
when a first radio frequency signal belonging to a first frequency band of LTE (Long term evolution) is transmitted through a first transceiving path, a harmonic signal generated by the first radio frequency signal is suppressed through a signal suppression module so as to reduce the harmonic signal, and interference generated when a second transceiving path receives a second radio frequency signal belonging to a second frequency band of a new air interface NR is reduced, wherein the signal suppression module is composed of N inductors and M capacitors, N is a positive integer, and M is a positive integer.
A fourth aspect of the embodiments of the present application discloses an electronic device, including:
a memory storing executable program code;
a processor coupled with the memory;
the processor calls the executable program code stored in the memory to execute the method for transmitting the radio frequency signal disclosed in the third aspect of the embodiment of the present application.
A fifth aspect of embodiments of the present application discloses a computer-readable storage medium storing a computer program, where the computer program causes a computer to execute the method for transmitting a radio frequency signal disclosed in the third aspect of embodiments of the present application.
A sixth aspect of embodiments of the present application discloses a computer program product, which, when run on a computer, causes the computer to perform some or all of the steps of any one of the methods of the first aspect of embodiments of the present application.
A seventh aspect of embodiments of the present application discloses an application publishing platform, where the application publishing platform is configured to publish a computer program product, where when the computer program product runs on a computer, the computer is caused to perform part or all of the steps of any one of the methods in the first aspect of the embodiments of the present application.
Compared with the related art, the embodiment of the application has the following beneficial effects:
in this embodiment, the radio frequency circuit may include a first transceiving path and a second transceiving path, where the first transceiving path may be configured to transmit a first radio frequency signal belonging to a first frequency band of long term evolution LTE; the second transceiving path may be configured to receive a second radio frequency signal of a second frequency band belonging to the new air interface NR, thereby implementing transceiving of radio frequency signals of different frequency bands. In addition, the first transceiving path may include a signal suppression module, and the signal suppression module may be formed by an inductor and a capacitor, and is configured to suppress a harmonic signal generated by the first radio frequency signal, so as to reduce interference of the harmonic signal on the second radio frequency signal, prevent the radio frequency signal in the LTE frequency band from affecting the radio frequency signal in the NR frequency band, improve sensitivity of the electronic device in receiving the NR radio frequency signal, and improve radio frequency performance of the electronic device. In addition, the size of the inductor and the capacitor forming the signal suppression module is small, so that the space on the radio frequency circuit can be saved, the radio frequency circuit can be designed in a miniaturized mode, and the application flexibility of the radio frequency circuit is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic view of an application scenario of a method for transmitting a radio frequency signal according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a radio frequency circuit disclosed in an embodiment of the present application;
fig. 3 is a schematic structural diagram of another rf circuit disclosed in the embodiments of the present application;
fig. 4 is a schematic structural diagram of a signal suppression module disclosed in an embodiment of the present application;
fig. 5A is a schematic diagram illustrating a test result of a first transceiving path according to an embodiment of the present disclosure;
fig. 5B is a schematic diagram illustrating a test result of another first transceiving path disclosed in the embodiment of the present application;
fig. 6 is a schematic structural diagram of an electronic device disclosed in an embodiment of the present application;
fig. 7 is a schematic flowchart of a method for transmitting radio frequency signals according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of another electronic device disclosed in the 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.
It should be noted that the terms "first", "second", "third" and "fourth" etc. in the description and claims of the present application are used for distinguishing different objects, and are not used for describing a specific order. The terms "comprises," "comprising," and "having," and any variations thereof, of the embodiments of the present application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiment of the application discloses a wireless signal transceiving circuit, electronic equipment and a transmission method of radio frequency signals, which can reduce interference during signal transmission between different frequency bands and improve the radio frequency performance of the electronic equipment.
The technical solution of the present application will be described in detail with reference to specific examples.
To more clearly illustrate a radio frequency circuit, an electronic device, and a transmission method of a radio frequency signal disclosed in the embodiments of the present application, an application scenario diagram of a transmission method of a radio frequency signal is first introduced. As shown in fig. 1, a communication connection is established between the electronic device 110 and the network device 120, and optionally, the electronic device 110 and the network device 120 may establish a communication connection through communication technologies such as fourth generation mobile communication technology (the 4th generation mobile communication technology,4 g), fifth generation mobile communication technology (the 5th generation mobile communication technology,5 g), and the like, and the communication connection manner is not limited in the embodiment of the present application.
In some embodiments, the electronic device 110 may be referred to as a User Equipment (UE). The electronic device 110 may be a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), or the like, and the electronic device 110 may also be a mobile phone, a Mobile Station (MS), a terminal device (mobile terminal), a notebook computer, or the like, and the electronic device 110 may communicate with one or more core networks through a Radio Access Network (RAN). For example, the electronic device 110 may be a mobile telephone (or "cellular" telephone) or a computer with terminal equipment, etc., and the electronic device 110 may also be a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device that exchanges voice and/or data with a radio access network, for example. The electronic device 110 may also be a handheld device with a wireless communication function, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a network evolved in the future, and the like, and the implementation of the present application is not limited.
In some embodiments, the network device 120 may be an evolved Node B (eNB or e-NodeB) macro base station, a micro base station (also referred to as a "small base station"), an Access Point (AP), a Transmission Point (TP), a new generation base station (new generation Node B), or the like in a Long Term Evolution (LTE) system, an NR (english, chinese) communication system, or an authorized assisted access long term evolution (LAA-LTE) system. The network device 120 may also be other types of network devices in a future evolution network, and the implementation of the present application is not limited.
In related technologies, 5G has two major deployment schemes, namely, non-standby Networking (NSA) and stand-alone networking (SA), and most of 5G at the present stage adopts the NSA deployment scheme and realizes transmission of 5G signals by modifying a 4G (4 th generation mobile communication technology) base station. Currently, in an NSA network, in order to improve a data transmission rate and ensure stability of signal transmission, electronic devices may use techniques such as endec (E-UTRAN, new radio dual connectivity) for communication, where endec is a 4G and 5G dual connectivity, and the electronic devices are connected to a 4G base station and a 5G base station simultaneously and support transmission of 4G signals and 5G signals. In the communication mode of the ENDC, different LTE frequency band and NR frequency band combinations can be adopted for simultaneous operation so as to support simultaneous transmission of LTE signals and NR signals.
In practice, it has been found that for certain specific frequency band combinations, the electronic device may have a self-interference problem, and a transmission signal in an LTE frequency band is coupled to an NR receiving path via an antenna, and if the NR receiving path does not sufficiently suppress the transmission frequency in the LTE frequency band, the intermodulation interference of the LTE transmission signal may enter an NR receiver, so that the NR sensitivity may be reduced, and the radio frequency performance of the electronic device may be affected. For example, taking the combination of the B3 (transmission frequency 1715-1785MHz (megahertz)) band of LTE and the N78 (frequency 3300-3800 MHz) band of NR as an example, the second harmonic of the transmission signal of the B3 band affects the reception signal of the N78 band (the second harmonic of the B3 band falls exactly within the N78 band), and the reception sensitivity of NR is reduced.
In the related art, a plurality of LPFs (Low-pass filters) are usually disposed in the rf module to suppress interference signals coupled to the NR receiving path. However, the low-pass filter has a large volume, occupies a large space of the electronic device, and is not favorable for miniaturization of the electronic device, and further is not favorable for improving the portability of the electronic device; in addition, the low pass filter is expensive, which increases the manufacturing cost of the electronic device. In view of the above, embodiments of the present application provide a radio frequency circuit, an electronic device, and a transmission method of a radio frequency signal, which can improve the signal transceiving efficiency of the electronic device and save the space of the electronic device, thereby improving the portability of the electronic device and saving the manufacturing cost of the electronic device.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a radio frequency circuit disclosed in the embodiment of the present application, and the radio frequency circuit 200 may include a first transceiving path 201 and a second transceiving path 202, where:
a first transceiving path 201, configured to transmit a first radio frequency signal belonging to a first frequency band of LTE; of course, in other embodiments, the first transceiving path 201 may also be used for receiving a first radio frequency signal belonging to LTE, which is not limited herein.
Optionally, the first frequency band may include frequency bands of B2 (transmission frequency 1710-1785 MHz), B3 (transmission frequency 1715-1785 MHz), and the like, which is not limited herein.
A second transceiving path 202, configured to receive a second radio frequency signal belonging to a second frequency band of the new air interface NR; similarly, in other embodiments, the second transceiving path may also be used to transmit a second radio frequency signal belonging to a new air interface NR, which is not limited herein.
Optionally, the second frequency band may include a 5G high frequency band such as N77 (frequency 3300-4200 MHz), N78 (frequency 3300-3800 MHz), and the like, which is not limited herein.
Optionally, the first transceiving path 201 may include a signal suppression module 2011, and the signal suppression module 2011 may be configured by N inductors and M capacitors (where N is a positive integer, M is a positive integer, for example, N may be 2, 3, 5, and the like, and M may be 2, 3, 5, and the like, which is not limited herein). Alternatively, N inductors in the signal suppression module 2011 may be connected in series, and M capacitors may be connected in parallel, because the inductor or the capacitor connected in series in the circuit can suppress a harmonic signal (particularly, a high-frequency harmonic signal, or a higher harmonic signal), the signal suppression module 2011 disposed in the first transceiving path 201 can suppress the harmonic signal generated by the first rf signal, thereby reducing interference of the harmonic signal generated by the first rf signal transmitted by the first transceiving path 201 on the second rf signal received by the second transceiving path 202, and improving the receiving sensitivity of the second transceiving path for receiving the NR rf signal.
By implementing the radio frequency circuit, the signal suppression module included in the first transceiving path is composed of an inductor and a capacitor, and can suppress harmonic signals generated by the first radio frequency signals so as to reduce interference of the harmonic signals of the first radio frequency signals on the second radio frequency signals, thereby improving the receiving sensitivity of the second transceiving path. In addition, because the signal suppression module is only composed of the inductor and the capacitor, compared with a filter in the related technology, the cost is lower, the inductor and the capacitor in the signal suppression module can be discrete small-package inductors and capacitors, compared with a filter with a larger size, the signal suppression module is more flexible in arrangement mode on the radio frequency circuit, occupies a smaller space, and is beneficial to the miniaturization design of the radio frequency circuit.
Referring again to fig. 2, in an embodiment, the first transceiving path may further include an rf transceiver 2012 and an antenna 2013, wherein:
the radio frequency transceiver 2012 may be electrically connected to the signal suppression module 2011, and configured to transmit a first radio frequency signal belonging to a first frequency band of the long term evolution LTE to the signal suppression module 2011;
it should be noted that the radio frequency transceiver 2012 is a transceiver for radio frequency signals, and can be used to transmit and receive first radio frequency signals belonging to LTE.
Optionally, the signal suppression module 2011 may be further electrically connected to the antenna 2013, and the signal suppression module 2011 may be specifically configured to filter a harmonic signal generated by the first radio frequency signal to obtain a target first radio frequency signal, and transmit the target first radio frequency signal to the antenna 2013;
the antenna 2013 is configured to transmit the target first rf signal transmitted by the signal suppression module 2011.
It should be further noted that the antenna 2013 may be an LTE antenna, which may convert a target first radio frequency signal belonging to LTE into electromagnetic wave energy that may be received by a network device such as a base station; of course, the LTE antenna may also convert electromagnetic wave energy into a first radio frequency signal when receiving the electromagnetic wave energy transmitted by a network device such as a base station, which is not limited herein.
Optionally, the number of the antennas 2013 may be one or more, and may be a single LTE antenna, or may be an antenna array composed of multiple LTE antennas, which is not limited herein.
By implementing the above embodiments, the signal suppression module may filter a first radio frequency signal transmitted by the radio frequency transceiver and generate a harmonic signal, thereby reducing the harmonic signal of the first radio frequency signal, and improving the receiving sensitivity of the second transceiver path by reducing interference generated when the second transceiver path receives a second radio frequency signal belonging to a second frequency band of a new air interface NR.
Referring to fig. 3, fig. 3 is a schematic structural diagram of another radio frequency circuit disclosed in the embodiment of the present application. Optionally, the signal suppression module 2011 may include a first signal suppression unit 2011A and a second signal suppression unit 2011B; the first signal suppression unit 2011A and the second signal suppression unit 2011B may both be formed by an inductor and a capacitor, and optionally, the number of inductors included in the first signal suppression unit 2011A may be greater than the number of inductors included in the second signal suppression unit 2011B, so that the suppression effect of the first signal suppression unit 2011A on the harmonic signal generated by the first radio frequency signal is greater than the suppression effect of the second signal suppression unit 2011B on the harmonic signal generated by the first radio frequency signal.
Optionally, one end of the first signal suppression unit 2011A may be electrically connected to the radio frequency transceiver 2012, and the other end of the first signal suppression unit 2011A may be electrically connected to one end of the second signal suppression unit 2011B; and the other end of the second signal suppression unit 2011B may be electrically connected to the antenna 2013.
In the embodiment of the present application, the first signal suppression unit 2011A and the second signal suppression unit 2011B have different suppression effects on the harmonic signal generated by the first radio frequency signal, so that in the embodiment of the present application, the first signal suppression unit 2011A may be disposed at a position closer to the radio frequency transceiver 2012, so that after the first radio frequency signal is transmitted from the radio frequency transceiver 2012, the suppression effect may be decreased step by step from high to low through the suppression degree, so as to filter the harmonic signal generated by the first radio frequency signal as much as possible, thereby reducing the interference of the harmonic signal of the first radio frequency signal on the second radio frequency signal to a greater extent.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a signal suppression module according to an embodiment of the present application. Optionally, the first signal suppression unit 2011A may include a first inductor L1, a second inductor L2, and a first capacitor C1, where:
one end of the first inductor L1 may be connected in series with the radio frequency transceiver 2012, the other end of the first inductor L1 may be connected in parallel with one end of the first capacitor C1, the other end of the first inductor L1 may also be connected in series with one end of the second inductor L2, and the other end of the second inductor L2 is connected in series with the second signal suppression unit 2011B, so that the first inductor L1, the second inductor L2, and the first capacitor C1 form a T-type signal suppression network, and the T-type signal suppression network may be configured to suppress a harmonic signal generated by the first radio frequency signal, so as to reduce interference of the harmonic signal on the second radio frequency signal.
It should be further noted that, a T-shaped signal suppression network formed by the first inductor L1, the second inductor L2, and the first capacitor C1 has a stable structure, so that the suppression effect on the harmonic signal generated by the first radio frequency signal is more stable, and the harmonic signal generated by the first radio frequency signal can be stably filtered out, thereby reducing the interference of the harmonic signal of the first radio frequency signal on the second radio frequency signal to a greater extent.
In one embodiment, the first inductance L1 may be an inductance of 1.8 nanohenries, 1.9 nanohenries; the second inductor L2 may be an inductor of 3.6 nanohenries and 3.8 nanohenries, and the first capacitor C1 may be a capacitor of 1.8 picofarads and 1.9 skins, which is not limited herein. In fact, the specific models and parameters of the first inductor L1, the second inductor L2 and the first capacitor C1 may be set by developers according to a great deal of development experience, and are not limited herein.
Referring to fig. 4 again, in an embodiment, the second signal suppression unit 2011B may include a second capacitor C2 and a third inductor L3, where:
one end of the second capacitor C2 may be connected in parallel with the first signal suppression module 2011A, one end of the third inductor L3 may be connected in series with the first signal suppression module 2011A, and the other end of the third inductor L3 may be connected in series with the antenna 2013, so that the second capacitor C2 and the third inductor L3 form an L-type signal suppression network, which may also be used to suppress a harmonic signal generated by the first radio frequency signal, so as to reduce interference of the harmonic signal on the second radio frequency signal.
It should be noted that, the L-type signal suppression network formed by the second capacitor C2 and the third inductor L3 has fewer network interfaces, and is more flexibly set in the radio frequency circuit, thereby improving the flexibility of the design of the radio frequency circuit.
It should be further noted that the suppression effect of the L-shaped signal suppression network on the harmonic signal generated by the first radio frequency signal is smaller than that of the T-shaped signal suppression network, but the L-shaped signal suppression network has a flexible structure and can be flexibly disposed in the radio frequency circuit, so as to save the wiring space of the circuit. In addition, the harmonic suppression network can be used as a supplementary network of the T-shaped signal suppression network, and after the T-shaped signal suppression network filters the harmonic signals generated by the first radio-frequency signals for the first time, the harmonic signals generated by the first radio-frequency signals are further filtered, so that the harmonic signals generated by the first radio-frequency signals are filtered as far as possible, and the interference of the harmonic signals of the first radio-frequency signals on the second radio-frequency signals is reduced to a greater extent.
In one embodiment, the second capacitor may be a 2 picofarad, 2.1 picofarad capacitor, and the third inductor may be an inductor of 2.5 nanohenries, 2.6 nanohenries, which is not limited herein. In practice, the specific model and parameters of the second capacitor C2 and the third inductor L3 may be set by a developer according to a great deal of development experience, and are not limited herein.
Referring to fig. 5A, fig. 5A is a schematic diagram illustrating a test result of a first transceiving channel according to an embodiment of the present disclosure. As can be seen from fig. 5A, on the first transceiving path provided with the signal suppression module, the first radio frequency signal with the transmission frequency of 1700MHz is subjected to attenuation suppression of less than 1dB (e.g., m1 in fig. 5A), while the harmonic signal with the transmission frequency of 3500MHz is subjected to attenuation suppression of more than 10dB (e.g., m5 in fig. 5A), so that interference of the harmonic signal of the first radio frequency signal with the second radio frequency signal can be reduced, and the receiving sensitivity of the second transceiving path can be improved.
Referring to fig. 5B, fig. 5B is a schematic diagram illustrating a test result of another first transceiving path according to an embodiment of the present disclosure. As can be seen from fig. 5B, on the first transceiving path provided with the signal suppression module, the impedance position (e.g., m3 in fig. 5B) of the first radio frequency signal with a transmission frequency of 1700MHz is higher than the helicity and is closer to the center of the circle of the harmonic signal (e.g., m2 in fig. 5B) of the first radio frequency signal with a transmission frequency of 3500MHz, which indicates that the harmonic signal of the first radio frequency signal is more attenuated and suppressed than the first radio frequency signal, that is, the signal suppression module can reduce the interference of the harmonic signal of the first radio frequency signal to the second radio frequency signal, and improve the receiving sensitivity of the second transceiving path.
Referring to fig. 6, fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the disclosure, where the electronic device 601 may include the rf circuit 200 according to the embodiments.
By implementing the embodiment of the application, the radio frequency performance of the electronic equipment can be improved, the manufacturing cost of the electronic equipment is reduced, and meanwhile, the miniaturization design of the electronic equipment is realized, so that the portability of the electronic equipment is improved.
Referring to fig. 7, fig. 7 is a flowchart illustrating a method for transmitting a radio frequency signal according to an embodiment of the present application, where the method for transmitting a radio frequency signal can be applied to the electronic device, and the method for transmitting a radio frequency signal includes the following steps:
702. when a first radio frequency signal belonging to a first frequency band of LTE (long term evolution) is transmitted through a first transceiving path, a harmonic signal generated by the first radio frequency signal is suppressed through a signal suppression module so as to reduce the harmonic signal generated by the first radio frequency signal, and interference generated when a second radio frequency signal belonging to a second frequency band of a new air interface NR is received by a second transceiving path is reduced, wherein the signal suppression module is composed of N inductors and M capacitors, N is a positive integer, and M is a positive integer.
By implementing the method, the signal suppression module included in the first transceiving path is composed of an inductor and a capacitor, and can suppress harmonic signals generated by the first radio-frequency signals so as to reduce the interference of the harmonic signals of the first radio-frequency signals on the second radio-frequency signals, thereby improving the receiving sensitivity of the second transceiving path. In addition, the signal suppression module is only composed of an inductor and a capacitor, compared with a filter in the related technology, the cost is lower, the inductor and the capacitor in the signal suppression module can be discrete small-package inductors and capacitors, compared with a filter with a large size, the arrangement mode on the radio frequency circuit can be more flexible, the occupied space is smaller, and the miniaturization design of the radio frequency circuit is facilitated.
As an optional implementation manner, the electronic device may transmit a first radio frequency signal belonging to a first frequency band of LTE through the radio frequency transceiver to the signal suppression module, and then filter a harmonic signal generated by the first radio frequency signal through the signal suppression module, so as to obtain a target first radio frequency signal, and transmit the target first radio frequency signal to the antenna for transmission.
By implementing the method, the signal suppression module can filter the first radio-frequency signal transmitted by the radio-frequency transceiver and generate a harmonic signal, so that the harmonic signal of the first radio-frequency signal is reduced, interference generated when the second radio-frequency signal of the second frequency band belonging to the new air interface NR is received by the second transceiving channel is reduced, and the receiving sensitivity of the second transceiving channel is improved.
As another optional implementation, the electronic device may transmit a first radio frequency signal belonging to a first frequency band of LTE through the radio frequency transceiver to the first signal suppression unit, so as to perform first filtering on a harmonic signal generated by the first radio frequency signal through the first signal suppression unit, transmit the first radio frequency signal subjected to the first filtering to the second signal suppression unit to perform second harmonic signal filtering, and transmit a target second radio frequency signal subjected to the second harmonic signal filtering to the antenna to transmit.
By implementing the method, the first radio-frequency signal can be subjected to the inhibiting action of gradually decreasing the inhibiting degree from high to low after being transmitted from the radio-frequency transceiver so as to filter the harmonic signal generated by the first radio-frequency signal as far as possible, thereby reducing the interference of the harmonic signal of the first radio-frequency signal on the second radio-frequency signal to a greater extent.
Referring to fig. 8, fig. 8 is a schematic structural diagram of another electronic device disclosed in the embodiment of the present application. As shown in fig. 8, the electronic device may include: radio frequency module 810, memory 820, input unit 830, display unit 840, sensor 850, audio circuit 860, wiFi (Wireless Fidelity) module 870, processor 880, and power supply 890. Those skilled in the art will appreciate that the electronic device configuration shown in fig. 8 does not constitute a limitation of the electronic device, and that the electronic device may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.
The radio frequency module 810 may be configured to receive and transmit signals during a message transmission and reception process or a call process, and in particular, receive downlink information of a base station and then process the downlink information to the processor 880; in addition, the data for designing uplink is transmitted to the base station. Generally, the rf module 810 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the radio module 810 may also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to global system for mobile communications (GSM), general Packet Radio Service (GPRS), code Division Multiple Access (CDMA), wideband Code Division Multiple Access (WCDMA), long term evolution, email, short Message Service (SMS), etc.
In some embodiments, the rf module 810 may include the rf circuit 200 described in the above embodiments, and after the rf module 810 transmits the first rf signal belonging to the first frequency band of LTE, the signal suppression module suppresses the harmonic signal generated by the first rf signal, so as to reduce the interference of the harmonic signal generated by the first rf signal on the second rf signal.
The memory 820 may be used to store software programs and modules, and the processor 880 executes various functional applications and data processing of the electronic device by operating the software programs and modules stored in the memory 820. The memory 820 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phone book, etc.) created according to the use of the electronic device, and the like. Further, the memory 820 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The input unit 830 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the electronic device. Specifically, the input unit 830 may include a touch panel 832 and other input devices 834. The touch panel 832, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 832 (e.g., operations by a user on or near the touch panel 832 using any suitable object or accessory such as a finger, a stylus, etc.) and drive the corresponding connection device according to a predetermined program. Alternatively, the touch panel 832 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, and sends the touch point coordinates to the processor 880, and can receive and execute commands sent from the processor 880. In addition, the touch panel 832 may be implemented by various types, such as resistive, capacitive, infrared, and surface acoustic wave. The input unit 830 may include other input devices 834 in addition to the touch panel 832. In particular, other input devices 834 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.
The display unit 840 may be used to display information input by a user or information provided to the user and various menus of the electronic device. The display unit 840 may include a display panel 842, and optionally, the display panel 842 may be configured in the form of a Liquid Crystal Display (LCD), an organic light-Emitting diode (OLED), or the like. Further, the touch panel 832 can cover the display panel 842, and when the touch panel 832 detects a touch operation thereon or nearby, the touch operation can be transmitted to the processor 880 to determine the type of the touch event, and then the processor 880 can provide a corresponding visual output on the display panel 842 according to the type of the touch event. Although in fig. 8, the touch panel 832 and the display panel 842 are two separate components to implement the input and output functions of the electronic device, in some embodiments, the touch panel 832 and the display panel 1042 can be integrated to implement the input and output functions of the electronic device.
The electronic device may also include at least one sensor 850, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor may include an ambient light sensor that adjusts the brightness of the display panel 842 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 842 and/or the backlight when the electronic device is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), detect the magnitude and direction of gravity when stationary, and can be used for applications (such as horizontal and vertical screen switching, related games, magnetometer attitude calibration) for recognizing the attitude of the electronic device, and related functions (such as pedometer and tapping) for vibration recognition; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which may be further configured to the electronic device, detailed descriptions thereof are omitted.
WiFi belongs to short distance wireless transmission technology, and the terminal device can help the user send and receive e-mail, browse web page and access streaming media, etc. through WiFi module 870, which provides wireless broadband internet access for the user.
The processor 880 is a control center of the electronic device, connects various parts of the entire electronic device using various interfaces and lines, performs various functions of the electronic device and processes data by operating or executing software programs and/or modules stored in the memory 820 and calling data stored in the memory 820, thereby integrally monitoring the electronic device. Optionally, processor 880 may include one or more processing units; preferably, the processor 880 may integrate an application processor, which mainly handles operating systems, user interfaces, applications, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 880.
In one embodiment, the modem processor and the rf module 810 may constitute the rf circuit in the embodiment of the present application, the rf module 810 may have a first transceiving path and a second transceiving path, and the modem processor may be used as a control unit in the rf circuit.
The electronic device also includes a power supply 890 (e.g., a battery) for powering the various components, which may be logically coupled to the processor 880 via a power management system that may be used to manage charging, discharging, and power consumption. Although not shown, the electronic device may further include a camera, a bluetooth module, and the like, which are not described in detail herein.
The embodiment of the application discloses a computer readable storage medium, which stores a computer program, wherein the computer program realizes the method described in the above embodiments when being executed by a processor.
Embodiments of the present application disclose a computer program product comprising a non-transitory computer readable storage medium storing a computer program, and the computer program, when executed by a processor, implements the method as described in the embodiments above.
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 non-volatile computer-readable storage medium, and can include the processes of the embodiments of the methods described above when the program is executed. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), or the like.
Any reference to memory, storage, database, or other medium as used herein may include non-volatile and/or volatile memory. Suitable non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), rambus (Rambus) direct RAM (RDRAM), direct bused dynamic RAM (DRDRAM), and Rambus Dynamic RAM (RDRAM).
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Those skilled in the art should also appreciate that the embodiments described in this specification are all alternative embodiments and that the acts and modules involved are not necessarily required for this application.
In various embodiments of the present application, it should be understood that the size of the serial number of each process described above does not mean that the execution sequence is necessarily sequential, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated units, if implemented as software functional units and sold or used as a stand-alone product, may be stored in a computer accessible memory. Based on such understanding, the technical solution of the present application, which is a part of or contributes to the prior art in essence, or all or part of the technical solution, may be embodied in the form of a software product, stored in a memory, including several requests for causing a computer device (which may be a personal computer, a server, a network device, or the like, and may specifically be a processor in the computer device) to execute part or all of the steps of the above-described method of the embodiments of the present application.
The foregoing detailed description has provided a radio frequency circuit, an electronic device, and a method for transmitting a radio frequency signal, which are disclosed in the embodiments of the present application, and the principles and embodiments of the present application are described herein using specific examples, and the description of the foregoing embodiments is only provided to help understanding the method and the core idea of the present application. Meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (10)
1. A radio frequency circuit comprising a first transceiving path and a second transceiving path, wherein:
the first transceiving channel is used for transmitting a first radio frequency signal belonging to a first frequency band of Long Term Evolution (LTE);
the second transceiving channel is used for receiving a second radio frequency signal of a second frequency band belonging to a new air interface NR;
the first transceiving path comprises a signal suppression module, the signal suppression module is composed of N inductors and M capacitors and is used for suppressing a harmonic signal generated by the first radio frequency signal so as to reduce interference of the harmonic signal on the second radio frequency signal, wherein N is a positive integer, and M is a positive integer; the signal suppression module comprises a first signal suppression unit and a second signal suppression unit, wherein the number of inductances included in the first signal suppression unit is larger than that included in the second signal suppression unit, so that the suppression effect of the first signal suppression unit on the harmonic signals generated by the first radio-frequency signals is larger than that of the second signal suppression unit on the harmonic signals generated by the first radio-frequency signals.
2. The radio frequency circuit of claim 1, wherein the first transceiving path further comprises a radio frequency transceiver and antenna, wherein:
the radio frequency transceiver is electrically connected with the signal suppression module and used for sending a first radio frequency signal belonging to a first frequency band of LTE to the signal suppression module;
the signal suppression module is electrically connected with the antenna and is further used for filtering a harmonic signal generated by the first radio frequency signal to obtain a target first radio frequency signal and transmitting the target first radio frequency signal to the antenna;
the antenna is used for transmitting the target first radio frequency signal.
3. The rf circuit of claim 2, wherein the first signal suppression unit is electrically connected to the rf transceiver, the second signal suppression unit is electrically connected to the first signal suppression unit, and the second signal suppression unit is further electrically connected to the antenna.
4. The radio frequency circuit according to claim 3, wherein the first signal suppressing unit comprises a first inductor, a second inductor, and a first capacitor, wherein:
the first inductor is electrically connected with the radio frequency transceiver, and the second inductor is electrically connected with the second signal suppression unit;
the first inductor is connected with the first capacitor in parallel, and the first inductor is connected with the second inductor in series to form a T-shaped signal suppression network.
5. The RF circuit of claim 4, wherein the inductance of the first inductor is 1.8 nanohenries, the inductance of the second inductor is 3.6 nanohenries, and the capacitance of the first capacitor is 1.8 picofarads.
6. The radio frequency circuit according to claim 3, wherein the second signal suppressing unit includes a second capacitor and a third inductor, wherein:
the second capacitor is connected with the first signal suppression unit in parallel, the third inductor is connected with the first signal suppression unit in series, and the third inductor is further connected with the antenna in series to form an L-shaped signal suppression network.
7. The RF circuit of claim 6, wherein the second capacitor has a capacitance of 2 picofarads and the third inductor has an inductance of 2.5 nanohenries.
8. An electronic device comprising a radio frequency circuit as claimed in any one of claims 1 to 7.
9. A method for transmitting radio frequency signals, which is applied to electronic equipment, the method comprising:
when a first radio frequency signal belonging to a first frequency band of Long Term Evolution (LTE) is transmitted through a first transceiving path, a harmonic signal generated by the first radio frequency signal is suppressed through a signal suppression module in the first transceiving path so as to reduce interference of the harmonic signal on a second transceiving path when the second transceiving path receives a second radio frequency signal belonging to a second frequency band of a new air interface (NR), wherein the signal suppression module is composed of N inductors and M capacitors, N is a positive integer, and M is a positive integer; the signal suppression module comprises a first signal suppression unit and a second signal suppression unit, wherein the number of inductances included in the first signal suppression unit is larger than that included in the second signal suppression unit, so that the suppression effect of the first signal suppression unit on the harmonic signals generated by the first radio-frequency signals is larger than that of the second signal suppression unit on the harmonic signals generated by the first radio-frequency signals.
10. An electronic device comprising a memory storing executable program code, and a processor coupled to the memory; wherein the processor calls the executable program code stored in the memory to perform the method of claim 9.
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| CN114448533A (en) * | 2022-02-25 | 2022-05-06 | Oppo广东移动通信有限公司 | Method and device for testing receiving link, electronic equipment and storage medium |
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