CN113746490B - Radio frequency structure and electronic equipment - Google Patents
Radio frequency structure and electronic equipment Download PDFInfo
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- CN113746490B CN113746490B CN202111060011.5A CN202111060011A CN113746490B CN 113746490 B CN113746490 B CN 113746490B CN 202111060011 A CN202111060011 A CN 202111060011A CN 113746490 B CN113746490 B CN 113746490B
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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
- H04B1/02—Transmitters
- H04B1/04—Circuits
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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
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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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
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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 application discloses radio frequency structure and electronic equipment mainly relates to electronic product technical field, and the radio frequency structure includes: the antenna module, the first radio frequency module, the second radio frequency module, the first power amplifier module and the second power amplifier module; the first radio frequency module is connected with the antenna module through a first power amplifier module, the second radio frequency module is connected with the antenna module through a second power amplifier module, and the input end of the first power amplifier module is connected with the input end of the second power amplifier module; the first radio frequency module can be conducted with the antenna module through the first power amplifier module or the second power amplifier module; the second radio frequency module can be conducted with the antenna module through the first power amplifier module or the second power amplifier module.
Description
Technical Field
The application relates to the technical field of electronic products, in particular to a radio frequency structure and electronic equipment.
Background
With the development of electronic devices, the electronic devices have more and more communication functions. For example, a wireless network (WIFI) communication function, a Bluetooth (BT) communication function, a primary radio frequency (e.g., 4G, 5G) communication function, and the like may be supported in one electronic device. Specifically, WIFI working frequency band coverage can be achieved through a WIFI radio frequency channel in the radio frequency framework, bluetooth frequency band coverage is achieved through a BT radio frequency channel in the radio frequency framework, and main radio frequency band coverage and the like are achieved through a main radio frequency channel. At present, power Amplifiers (PAs) between rf paths with different communication functions are generally independently arranged to meet the output power requirements of different rf paths. For example: the 2.4G WIFI antenna usually adopts a PA (power amplifier) powered by 3.3V due to high output power requirement; the BT antenna generally uses a 1.8V-powered PA because of its low output power. Among them, the PA of the 2.4G WIFI antenna has relatively low efficiency although it has high saturation power, and the BT antenna has relatively high efficiency but low saturation power. The current setting mode of PA in the radio frequency structure has the problem that the output power requirement and high efficiency cannot be considered at the same time.
Disclosure of Invention
The embodiment of the application provides a radio frequency structure and electronic equipment, and aims to solve the problem that the output power requirement and high efficiency cannot be considered in the setting mode of a PA in the conventional radio frequency structure.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a radio frequency structure, including: the antenna module, the first radio frequency module, the second radio frequency module, the first power amplifier module and the second power amplifier module;
the first radio frequency module is connected with the antenna module through the first power amplifier module, the second radio frequency module is connected with the antenna module through the second power amplifier module, and the input end of the first power amplifier module is connected with the input end of the second power amplifier module;
the first radio frequency module can be conducted with the antenna module through the first power amplifier module or the second power amplifier module; the second radio frequency module can be conducted with the antenna module through the first power amplifier module or the second power amplifier module.
In a second aspect, an embodiment of the present application further provides an electronic device, including the radio frequency structure described in the first aspect.
Like this, in the above-mentioned scheme of this application, through setting up the input that corresponds the first power amplifier module in the radio frequency access at first radio frequency module and setting up the second power amplifier module input that corresponds the radio frequency access at the second radio frequency module and be connected for the radio frequency signal of the different transmitting power of first radio frequency module can be transmitted through different power amplification modules, and the radio frequency signal of the different transmitting power of second radio frequency module also can be transmitted through different power amplification modules. Therefore, under the condition that the transmitting power of the radio-frequency signal is low, the power amplifier module works to ensure high efficiency, and under the condition that the transmitting power of the radio-frequency signal is high, the power amplifier module works to ensure high power output, so that the radio-frequency structure can give consideration to high output power and high efficiency when the radio-frequency signal is transmitted.
Drawings
FIG. 1 shows a block diagram of a radio frequency architecture of an embodiment of the present application;
FIG. 2 shows one of the schematic diagrams of the radio frequency architecture of an embodiment of the present application;
FIG. 3 is a timing control diagram of an embodiment of the present invention;
FIG. 4 is a second schematic timing control diagram of an RF architecture according to an embodiment of the present application;
FIG. 5 is a second schematic diagram of an RF architecture according to an embodiment of the present application;
FIG. 6 is a third schematic diagram illustrating timing control of an RF architecture according to an embodiment of the present invention;
fig. 7 is a fourth timing control diagram of the rf structure according to the embodiment of the present application.
Detailed Description
Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be 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 disclosure to those skilled in the art.
As shown in fig. 1, an embodiment of the present application provides a radio frequency structure, including: the antenna module 15, the first radio frequency module 11, the second radio frequency module 12, the first power amplifier module 13 and the second power amplifier module 14.
The first radio frequency module 11 is connected with the antenna module 15 through the first power amplifier module 13, the second radio frequency module 12 is connected with the antenna module 15 through the second power amplifier module 14, and the input end of the first power amplifier module 13 is connected with the input end of the second power amplifier module 14.
The first radio frequency module 11 can be conducted with the antenna module 15 through the first power amplifier module 13 or the second power amplifier module 14; the second rf module 12 may be conducted with the antenna module 15 through the first power amplifier module 13 or the second power amplifier module 14.
In this embodiment, the input end of the first power amplifier module 13 disposed in the radio frequency path corresponding to the first radio frequency module 11 is connected to the input end of the second power amplifier module 14 disposed in the radio frequency path corresponding to the second radio frequency module 12, so that the radio frequency signals of different transmission powers of the first radio frequency module 11 can be transmitted through different power amplifier modules, and the radio frequency signals of different transmission powers of the second radio frequency module 12 can also be transmitted through different power amplifier modules. Therefore, under the condition that the transmitting power of the radio-frequency signal transmitted by the radio-frequency module is lower, the work of one power amplifier module is realized to ensure higher efficiency, and under the condition that the transmitting power of the radio-frequency signal is higher, the work of the other power amplifier module is realized to ensure higher power output, so that the radio-frequency structure can give consideration to higher output power and higher efficiency when the radio-frequency signal is transmitted.
In addition, in the embodiment, different radio frequency modules are used for interaction multiplexing among the power amplifier modules in the radio frequency channel, so that the radio frequency structure can give consideration to higher output power and higher efficiency when transmitting radio frequency signals, the increase of power amplifier devices in the radio frequency structure can be reduced, and the spatial layout of the radio frequency structure is prevented from being greatly influenced.
Optionally, when the transmission power of the first radio frequency signal transmitted by the first radio frequency module 11 is greater than or equal to a preset threshold, the first radio frequency module 11 is conducted with the antenna module 15 through the first power amplifier module 13; and under the condition that the transmitting power of the first radio frequency signal is smaller than the preset threshold, the first radio frequency module 11 is conducted with the antenna module 15 through the second power amplifier module 14.
When the transmission power of the second radio frequency signal transmitted by the second radio frequency module 12 is greater than or equal to the preset threshold, the second radio frequency module 12 is conducted with the antenna module 15 through the first power amplifier module 13; and under the condition that the transmitting power of the second radio frequency signal is smaller than the preset threshold, the second radio frequency module 12 is conducted with the antenna module 15 through the second power amplifier module 14.
It should be noted that, the first radio frequency module 11 is conducted with the antenna module 15 through the first power amplifier module 13, or the first radio frequency module 11 is conducted with the antenna module 15 through the second power amplifier module 14, which can be understood that the first radio frequency module 11 is in a working state; the second radio frequency module 12 is conducted with the antenna module 15 through the first power amplifier module 13, or the second radio frequency module 12 is conducted with the antenna module 15 through the second power amplifier module 14, which can be understood that the second radio frequency module 12 is in a working state.
Optionally, the working frequency band of the first rf module 11 is the same as the working frequency band of the second rf module 12. It should be noted that the working frequency band of the first radio frequency module 11 is the same as the working frequency band of the second radio frequency module 12, which may mean that the working frequency band of the first radio frequency module 11 is completely the same as or partially the same as the working frequency band of the second radio frequency module 12, or that the difference between the working frequency band of the first radio frequency module 11 and the working frequency band of the second radio frequency module 12 is within a preset range, that is, the working frequency band of the first radio frequency module 11 is close to the working frequency band of the second radio frequency module 12.
For example: first radio frequency module 11 can be 2.4G WIFI radio frequency module, second radio frequency module 12 can be the bluetooth radio frequency module.
Optionally, under the condition that the operating frequency band of the first radio frequency module 11 is the same as the operating frequency band of the second radio frequency module 12, the first radio frequency module 11 and the second radio frequency module 12 may operate in a time division multiplexing manner.
Optionally, the working frequency band of the first radio frequency module 11 may also be different from the working frequency band of the second radio frequency module 12, and it is necessary to satisfy the efficiency when the first radio frequency module 11 is conducted with the antenna module 15 through the second power amplifier module 14, compared with the working efficiency when the first radio frequency module 11 is conducted with the antenna module 15 through the first power amplifier module 13.
Optionally, the first power amplifier module 13 may include one or more power amplifiers, and the second power amplifier module 14 may include one or more power amplifiers. For example: the first radio frequency module 11 is conducted with the antenna module 15 through the first power amplifier module 13, or the second radio frequency module 12 is conducted with the antenna module 15 through the first power amplifier module 13, which may refer to enabling (or called powering up) of a power amplifier in the first power amplifier module 13, that is, the first power amplifier module 13 is in a working state. The first radio frequency module 11 is conducted with the antenna module 15 through the second power amplifier module 14, or the second radio frequency module 12 is conducted with the antenna module 15 through the second power amplifier module 14, which may refer to enabling (or called powering up) of a power amplifier in the second power amplifier module 14, that is, the second power amplifier module 14 is in a working state.
Optionally, under the condition that the input end of the first power amplifier module 13 is directly connected to the input end of the second power amplifier module 14: when the first power amplifier module 13 is in a working state, the second power amplifier module 14 is in a non-working state; when the second power amplifier module 14 is in an operating state, the first power amplifier module 13 is in a non-operating state.
Optionally, the saturation power of the first power amplifier module 13 is greater than the saturation power of the second power amplifier module 14, and if the saturation power of the power amplifier in the first power amplifier module 13 is greater than the saturation power of the power amplifier in the second power amplifier module 14.
Optionally, the preset threshold is determined by the saturation power of the second power amplifier module 14, and if the preset threshold is the saturation power of the power amplifier in the second power amplifier module 14, it is ensured that the efficiency is higher when the transmission power of the first radio frequency module 11 for transmitting the first radio frequency signal is lower than the preset threshold, and the transmission power of the second radio frequency module 12 for transmitting the second radio frequency signal is higher.
In the above solution, the input end of the first power amplifier module 13 disposed in the radio frequency path corresponding to the first radio frequency module 11 is connected to the input end of the second power amplifier module 14 disposed in the radio frequency path corresponding to the second radio frequency module 12, so that the first radio frequency module 11 operates through the first power amplifier module 13 when the transmission power of the first radio frequency signal is greater than or equal to the preset threshold, that is, the transmission power of the first radio frequency signal is higher, so as to ensure higher power output, and operates through the second power amplifier module 14 when the transmission power of the first radio frequency signal is less than the preset threshold, that is, the transmission power of the first radio frequency signal is lower, so as to ensure higher efficiency; and the second radio frequency module 12 is greater than or equal to in the transmitting power of the second radio frequency signal of transmission the predetermined threshold, namely under the higher circumstances of transmitting power of the second radio frequency signal, through the work of the said first power amplifier module 13, in order to guarantee the higher power output, and in the transmitting power of the said second radio frequency signal is less than the said predetermined threshold, namely under the lower circumstances of transmitting power of the second radio frequency signal, through the work of the said second power amplifier module 14, in order to guarantee higher efficiency, thus realize the radio frequency structure can give consideration to higher output power and higher efficiency while transmitting the radio frequency signal, and can also save the power consumption.
Optionally, the first power amplifier module 13 includes a first power amplifier, and the second power amplifier module 14 includes a second power amplifier; the first radio frequency module 11 is connected with the antenna module 15 through the first power amplifier, the second radio frequency module 12 is connected with the antenna module 15 through the second power amplifier, and an input end of the first power amplifier is connected with an input end of the second power amplifier.
When the transmission power of the first radio frequency signal transmitted by the first radio frequency module 11 is greater than or equal to a preset threshold, the first power amplifier is in a working state (for example, the first power amplifier is enabled), and the second power amplifier is in a non-working state (for example, the second power amplifier is not enabled), that is, the first radio frequency module 11 is conducted with the antenna module 15 through the first power amplifier module 13; when the transmission power of the first radio frequency signal is smaller than the preset threshold, the first power amplifier is in a non-working state, and the second power amplifier is in a working state, that is, the first radio frequency module 11 is conducted with the antenna module 15 through the second power amplifier module 14;
when the transmission power of the second radio frequency signal transmitted by the second radio frequency module 12 is greater than or equal to the preset threshold, the first power amplifier is in a working state, and the second power amplifier is in a non-working state, that is, the second radio frequency module 12 is conducted with the antenna module 15 through the first power amplifier module 13; and under the condition that the transmission power of the second radio frequency signal is smaller than the preset threshold, the first power amplifier is in a non-working state, and the second power amplifier is in a working state, that is, the second radio frequency module 12 is conducted with the antenna module 15 through the second power amplifier module 14.
Optionally, the radio frequency structure further comprises: a third power amplifier module 16; the first radio frequency module 11 is connected with the input end of the third power amplifier module 16, and the output end of the third power amplifier module 16 is connected with the input end of the first power amplifier module 13.
The saturation power of the third power amplifier module 16 may be the same as the saturation power of the first power amplifier module 13.
Optionally, the first power amplifier module 13 includes N first power amplifiers connected in series, the second power amplifier module 14 includes M second power amplifiers connected in series, and the third power amplifier module 16 includes P third power amplifiers connected in series; wherein N, M, P are positive integers.
The first radio frequency module 11 is connected to the antenna module 15 sequentially through the P third power amplifiers and the N first power amplifiers; the second rf module 12 is connected to the antenna module 15 through the M second power amplifiers; the input end of the first target power amplifier is connected with the input end of the second target power amplifier.
Wherein the first target power amplifier is: a first power amplifier disposed along a power transmission direction of the N first power amplifiers; the second target power amplifier is: a first second power amplifier disposed along a power transmission direction of the M second power amplifiers.
In other words, the first power amplifier module 13 may include N first power amplifiers connected in series in sequence, where an input end of a first power amplifier arranged in the power transmission direction among the N first power amplifiers is an input end of the first power amplifier module 13, and the input end of the first power amplifier module is connected to an output end of the third power amplifier module 16 and an input end of the second power amplifier module 14, respectively; the output end of the last first power amplifier of the N first power amplifiers arranged along the power transmission direction is the output end of the first power amplifier module 13, and is connected with the antenna module 15.
Correspondingly, the second power amplifier module 14 may include M second power amplifiers connected in series in sequence, where an input end of a first second power amplifier arranged in the M second power amplifiers along the power transmission direction is an input end of the second power amplifier module 14, and the input end of the first power amplifier module 13 and the input end of the second radio frequency module 12 are connected to the input end of the first power amplifier module 13 respectively; the output end of the last second power amplifier in the M second power amplifiers arranged along the power transmission direction is the output end of the second power amplifier module 14, and is connected with the antenna module 15.
Correspondingly, the third power amplifier module 16 may include P third power amplifiers connected in series in sequence, where an input end of a first third power amplifier arranged in the P third power amplifiers along the power transmission direction is an input end of the third power amplifier module 16, and the input end is connected to the first radio frequency module 11; the output end of the last third power amplifier in the P third power amplifiers arranged along the power transmission direction is the output end of the third power amplifier module 16, and is connected with the input end of the first power amplifier module 13.
Optionally, the saturation power of the first power amplifier is different from the saturation power of the second power amplifier, for example: the saturation power of each first power amplifier in the N first power amplifiers is the same, the saturation power of each second power amplifier in the M second power amplifiers is the same, and the saturation power of the first power amplifiers is larger than that of the second power amplifiers. Another example is: the saturation power of each of the P third power amplifiers is the same, and further, the saturation power of the third power amplifier may also be the same as the saturation power of the first power amplifier.
It should be noted that, the first power amplifier module 13 being in the working state may refer to that the N first power amplifiers are all in the powered-on state, and the first power amplifier module 13 being in the non-working state may refer to that at least one of the N first power amplifiers is in the non-powered-on state; the second power amplifier module 14 being in a working state may refer to that the M second power amplifiers are all in a powered-on state, and the second power amplifier module 14 being in a non-working state may refer to that at least one of the M second power amplifiers is in a non-powered-on state; the third power amplifier module 16 may be in a working state, which means that all the P third power amplifiers are in a powered-on state, and the third power amplifier module 16 may be in a non-working state, which means that at least one of the P third power amplifiers is in a non-powered-on state.
For convenience of explanation, in the following description, for example, in combination that the first power amplifier module 13, the second power amplifier module 14 and the third power amplifier module 16 respectively include one power amplifier, as shown in fig. 2, the first power amplifier module 13 includes a first power amplifier 131, and the second power amplifier module 14 includes a second power amplifier 141; the third power amplifier module 16 includes a third power amplifier 161.
The first radio frequency module 11 is connected to the antenna module 15 sequentially through the third power amplifier 161 and the first power amplifier 131; the second rf module 12 is connected to the antenna module 15 through the second power amplifier 141; the input terminal of the second power amplifier 141 is connected to the connection terminal between the first power amplifier 131 and the third power amplifier 161.
When the transmission power of the first radio frequency signal is greater than or equal to a preset threshold, the first power amplifier 131 and the third power amplifier 161 are in an operating state, and the second power amplifier 141 is in a non-operating state; when the transmission power of the first radio frequency signal is smaller than the preset threshold, the second power amplifier 141 and the third power amplifier 161 are in an operating state, and the first power amplifier 131 is in a non-operating state;
when the transmission power of the second radio frequency signal is greater than or equal to the preset threshold, the first power amplifier 131 is in an operating state, and the second power amplifier 141 and the third power amplifier 161 are in a non-operating state; when the transmission power of the second radio frequency signal is smaller than the preset threshold, the second power amplifier 141 is in an operating state, and the first power amplifier 131 and the third power amplifier 161 are in a non-operating state.
Optionally, the first radio frequency module 11 is a 2.4G WIFI radio frequency module, and the second radio frequency module 12 is a BT radio frequency module, as shown in fig. 2, the first radio frequency module 11 includes a WIFI baseband, and the third power amplifier module 16 is connected to the WIFI baseband; the second rf module 12 includes a BT baseband, and the second power amplifier module 14 is connected to the BT baseband.
The working process of the radio frequency structure of the present application is described with this as an example: as shown in fig. 3, when the 2.4G WIFI radio frequency module is in an operating state, and the transmission power of the 2.4G WIFI radio frequency module for transmitting the first radio frequency signal is greater than or equal to XdBm (i.e. a preset threshold), the PA1 (i.e. the first power amplifier 131) and the PA3 (i.e. the third power amplifier 161) are enabled (i.e. operating), the PA2 (i.e. the second power amplifier 141) is not enabled (i.e. not operating), and the 2.4G WIFI radio frequency module is in a normal state. When the transmitting power of the first radio frequency signal is less than XdBm, PA2 and PA3 are enabled (i.e. working), PA1 is not enabled (i.e. not working), the 2.4G WIFI radio frequency module works in a high-efficiency state, and the power consumption can be saved (or the 2.4G WIFI radio frequency module works in a power-saving state).
Meanwhile, the BT can also select a mode for boosting power or maintaining high efficiency according to requirements; as shown in fig. 4, when the BT is in the operating state and the transmission power of the second radio frequency signal transmitted by the BT is less than XdBm, PA2 is enabled (i.e. operating), PA1 and PA3 are not enabled (i.e. not operating), and the BT radio frequency module operates in the normal state (i.e. high efficiency state); when the transmission power of the second radio frequency signal is greater than or equal to XdBm, PA1 is enabled (i.e. working), PA2 and PA3 are not enabled (i.e. not working), and the BT radio frequency module is working in a high power state.
Alternatively, the above states may be calibrated independently in advance to obtain parameters such as matched filter coefficients and IQ coefficients. According to the scheme, on the basis that the power amplifier is not added, the 2.4G WIFI radio frequency module and the BT radio frequency module can give consideration to higher output power and higher efficiency when transmitting radio frequency signals, the spatial layout of a radio frequency structure is prevented from being greatly influenced, and the cost is low.
Optionally, the saturation power of the first power amplifier 131 is greater than the saturation power of the second power amplifier 141. Optionally, the saturation power of the third power amplifier 161 may also be greater than the saturation power of the second power amplifier 141; alternatively, the saturation power of the third power amplifier 161 may be the same as the saturation power of the first power amplifier 131. Wherein the preset threshold is the saturation power of the second power amplifier 141.
Optionally, as shown in fig. 5, the radio frequency structure further includes a first switch unit 17; the first switching unit includes a first terminal, a second terminal, a third terminal, and a fourth terminal.
Wherein the first switching unit 17 includes a first terminal, a second terminal, a third terminal, and a fourth terminal; the first end is connected with the output end of the third power amplifier module 16, the second end is connected with the input end of the first power amplifier module 13, the third end is connected with the input end of the second power amplifier module 14, and the fourth end is connected with the second radio frequency module 12;
the first switching unit 17 is switchable between a plurality of on states; wherein, in a first conducting state, the first terminal is conducted with the second terminal; under a second conduction state, the first end is conducted with the third end; under a third conduction state, the third end and the fourth end are conducted; and under a fourth conduction state, the second end and the fourth end are conducted.
In this embodiment, the first switch unit 17 is arranged to improve the isolation between the first rf module 11 and the second rf module 12 during operation, and reduce the mutual interference.
Alternatively, the first switching unit 17 may be a Double Pole Double Throw (DPDT) switch. The following description is given of the working process of the radio frequency structure of the present application, taking as an example that the first radio frequency module 11 is a 2.4G WIFI radio frequency module and the second radio frequency module 12 is a BT radio frequency module: as shown in fig. 6, when the 2.4G WIFI radio frequency module is in an operating state and the transmission power of the 2.4G WIFI radio frequency module for transmitting the first radio frequency signal is greater than or equal to XdBm (i.e. a preset threshold), PA1 and PA3 are enabled (i.e. operating), PA2 is not enabled (i.e. not operating), DPDT turns on PA3 and PA1 (i.e. the first switch unit 17 is in a first on state), and the 2.4G WIFI radio frequency module operates in a normal state; when the transmitting power of the first radio frequency signal is less than XdBm, PA2 and PA3 are enabled (i.e. working), PA1 is not enabled (i.e. not working), the DPDT switches on PA2 and PA3 (i.e. the first switch unit 17 is in the second on state), the 2.4G WIFI radio frequency module works in the high-efficiency state, and power consumption can be saved (or the 2.4G WIFI radio frequency module works in the power-saving state).
As shown in fig. 7, when the BT rf module is in the operating state and the transmission power of the second rf signal transmitted by the BT rf module is less than XdBm, the PA2 is enabled (i.e. operating), the PA1 and the PA3 are not enabled (i.e. not operating), the DPDT turns on the PA2 and the BT rf module (i.e. the first switch unit 17 is in the third conducting state), and the BT rf module operates in the normal state (i.e. high efficiency state); when the transmission power of the second rf signal is greater than or equal to XdBm, PA1 is enabled (i.e. operating), PA2 and PA3 are not enabled (i.e. not operating), DPDT turns on the BT rf module and PA1 (i.e. the first switch unit 17 is in the fourth on state), and the BT rf module operates in the high power state.
In this scheme, through the switching of first switch unit 17 on-state, when guaranteeing that 2.4G WIFI radio frequency module and BT radio frequency module can compromise higher output and higher efficiency when transmitting radio frequency signal, can also guarantee 2.4G WIFI radio frequency module and BT radio frequency module during operation, have higher isolation between the two, reduce the mutual transmission of interference.
Optionally, the antenna module 15 includes: a first antenna and a second antenna; the first antenna is connected with the first power amplifier module 13; the second antenna is connected with the second power amplifier module 14. In this way, the first rf module 11 and the second rf module 12 can operate through different antennas. For example: under the condition that the working frequency bands of the first radio frequency module 11 and the second radio frequency module 12 are different and the first switch unit 17 is arranged in the radio frequency structure, the first radio frequency module 11 and the second radio frequency module 12 can work in a normal state simultaneously/non-simultaneously through different antennas, or the first radio frequency module 11 works in a high-efficiency state and the second radio frequency module 12 works in a high-power state and the like. Optionally, the antenna module 15 includes: a second switching unit 151 and a third antenna 152; the second switching unit 151 includes a first terminal, a second terminal, and a third terminal.
The first end is connected to the first power amplifier module 13, the second end is connected to the second power amplifier module 14, and the third end is connected to the third antenna 152; the second switching unit 151 is switchable between a plurality of on states; wherein, in a first conduction state, the first terminal is conducted with the third terminal; and under a second conduction state, the second end is conducted with the third end.
In this embodiment, the first radio frequency module 11 and the second radio frequency module 12 may multiplex one antenna, and if the first radio frequency module 11 is a 2.4G WIFI radio frequency module and the second radio frequency module 12 is a BT radio frequency module, time division multiplexing may be implemented by controlling the on state of the second switch unit 151.
Optionally, the radio frequency structure further comprises: a first mixer 18 and a second mixer 19.
As shown in fig. 2, the first rf module 11 may be connected to the first power amplifier module 13 through the first mixer 18, and the second rf module 12 may be connected to the second power amplifier module 14 through the second mixer 19.
In the case that the radio frequency structure includes a third power amplifier module 16, as shown in fig. 5, the first radio frequency module 11 may be connected to the third power amplifier module 16 through the first mixer 18, and the second radio frequency module 12 may be connected to the second power amplifier module 14 through the second mixer 19.
The embodiment of the present application further provides an electronic device, which includes the radio frequency structure described above, and can achieve the same technical effect, and is not described herein again to avoid repetition.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
While preferred embodiments of the present application have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the true scope of the embodiments of the application.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or terminal apparatus that comprises the element.
While the foregoing is directed to the preferred embodiment of the present application, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the principles of the disclosure and, therefore, the scope of the disclosure is to be defined by the appended claims.
Claims (5)
1. A radio frequency structure, comprising: the antenna module, the first radio frequency module, the second radio frequency module, the first power amplifier module and the second power amplifier module;
the first radio frequency module is connected with the antenna module through the first power amplifier module, the second radio frequency module is connected with the antenna module through the second power amplifier module, and the input end of the first power amplifier module is connected with the input end of the second power amplifier module;
the first radio frequency module can be conducted with the antenna module through the first power amplifier module or the second power amplifier module; the second radio frequency module can be conducted with the antenna module through the first power amplifier module or the second power amplifier module;
a third power amplifier module;
the first radio frequency module is connected with the input end of the third power amplifier module, and the output end of the third power amplifier module is connected with the input end of the first power amplifier module;
the antenna module includes: a second switching unit and a third antenna;
the second switch unit comprises a first end, a second end and a third end; the first end is connected with the first power amplifier module, the second end is connected with the second power amplifier module, and the third end is connected with the third antenna;
the second switching unit is switchable between a plurality of conductive states; wherein, in a first conduction state, the first terminal is conducted with the third terminal; under a second conduction state, the second end is conducted with the third end;
the first power amplifier module comprises N first power amplifiers which are connected in series, the second power amplifier module comprises M second power amplifiers which are connected in series, and the third power amplifier module comprises P third power amplifiers which are connected in series; wherein N, M, P are positive integers;
the first radio frequency module is connected with the antenna module sequentially through the P third power amplifiers and the N first power amplifiers; the second radio frequency module is connected with the antenna module through the M second power amplifiers; the input end of the first target power amplifier is connected with the input end of the second target power amplifier;
wherein the first target power amplifier is: a first power amplifier disposed along a power transmission direction of the N first power amplifiers; the second target power amplifier is: a first second power amplifier disposed along a power transmission direction of the M second power amplifiers;
the radio frequency structure further comprises a first switch unit;
the first switch unit comprises a first end, a second end, a third end and a fourth end; the first end is connected with the output end of the third power amplifier module, the second end is connected with the input end of the first power amplifier module, the third end is connected with the input end of the second power amplifier module, and the fourth end is connected with the second radio frequency module;
the first switching unit is switchable between a plurality of conduction states; wherein, in a first conduction state, the first end is conducted with the second end; under a second conduction state, the first end is conducted with the third end; under a third conduction state, the third end and the fourth end are conducted; in a fourth conducting state, the second end and the fourth end are conducted;
the radio frequency structure further comprises: a first mixer and a second mixer;
the first radio frequency module is connected with the first power amplifier module through the first frequency mixer, and the second radio frequency module is connected with the second power amplifier module through the second frequency mixer.
2. The radio frequency structure of claim 1, wherein an operating frequency band of the first radio frequency module is the same as an operating frequency band of the second radio frequency module.
3. The radio frequency fabric of claim 1, wherein a saturation power of the first power amplifier is different from a saturation power of the second power amplifier.
4. The radio frequency structure according to claim 1, wherein the antenna module comprises: a first antenna and a second antenna;
the first antenna is connected with the first power amplifier module; the second antenna is connected with the second power amplifier module.
5. An electronic device comprising the radio frequency structure of any of claims 1 to 4.
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