CN113300734A - Radio frequency antenna device, signal receiving and transmitting method of radio frequency antenna device and mobile terminal - Google Patents
Radio frequency antenna device, signal receiving and transmitting method of radio frequency antenna device and mobile terminal Download PDFInfo
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- CN113300734A CN113300734A CN202110505163.5A CN202110505163A CN113300734A CN 113300734 A CN113300734 A CN 113300734A CN 202110505163 A CN202110505163 A CN 202110505163A CN 113300734 A CN113300734 A CN 113300734A
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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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
Abstract
The invention discloses a radio frequency antenna device, a signal receiving and transmitting method of the radio frequency antenna device and a mobile terminal, wherein the radio frequency antenna device comprises: the radio frequency modem, the first radio frequency amplifier, the first integrated switch, the first antenna, the first filter, the second integrated switch and the second antenna; a transmitting signal sent by the radio frequency modem enters the integrated switch after being amplified by the first radio frequency amplifier, and the transmitting signal is radiated out through the first antenna after passing through the first integrated switch; the received signal enters the second integrated switch after passing through the second antenna, is output to the first filter through the second integrated switch, is filtered by the first filter and then enters the audio modem. The invention distinguishes the transmitting path and the receiving path from the physical channel by using two different antennas, and the duplexer can be removed because the transmitting path and the receiving path do not need to be combined and then accessed into the integrated switch, thereby reducing the cost of the mobile terminal.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a radio frequency antenna device, a signal transceiving method for a radio frequency antenna device, and a mobile terminal.
Background
In 3G, 4G and 5G communications, the frequency band includes two types, namely TDD and FDD. The frequency band transmission and reception of the TDD system is Time Division, i.e. Time Division Duplex (TDD), which means that the frequency band transmission and reception can be connected to a communication antenna through a switch. The FDD scheme, Frequency Division Duplex (FDD), refers to that receiving communication and transmitting communication are performed by using different radio Frequency points/frequencies. The FDD scheme has many advantages, such as high speed, high interference rejection, etc.
Compared with the TDD system, the FDD system has a characteristic that the transmitting communication and the receiving communication work simultaneously, but the FDD system cannot use a switch, so that a duplexer device is required to be used in a radio frequency path, so that the transmitting path and the receiving path are combined into one path and then connected to a communication antenna. However, the duplexer has high parameter requirements, complex process and high cost, which results in high cost of the mobile terminal.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the above-mentioned deficiencies of the prior art, an object of the present invention is to provide a radio frequency antenna device, a method for transmitting and receiving signals of a radio frequency antenna device, and a mobile terminal, so as to solve the problem of high cost caused by using an FDD scheme in the mobile terminal.
The technical scheme of the invention is as follows:
a radio frequency antenna apparatus, comprising: the radio frequency modem, the first radio frequency amplifier, the first integrated switch, the first antenna, the first filter, the second integrated switch and the second antenna;
a transmitting signal sent by the radio frequency modem enters the integrated switch after being amplified by the first radio frequency amplifier, and the transmitting signal is radiated out through the first antenna after passing through the first integrated switch;
and the received signal enters the second integrated switch after passing through the second antenna, is output to the first filter through the second integrated switch, is filtered by the first filter and then enters the radio frequency modem.
In a further aspect of the present invention, the first antenna is connected to an output of the first integrated switch, an input of the first integrated switch is connected to an output of the first rf amplifier, and an input of the first rf amplifier is connected to a transmitting port of the rf modem; the second antenna is connected with the input end of the second integrated switch, the output end of the second integrated switch is connected with the input end of the first filter, and the output end of the first filter is connected with the receiving port of the radio frequency modem.
According to the further arrangement of the invention, a plurality of first radio frequency amplifiers are arranged; each first radio frequency amplifier corresponds to one frequency band.
In a further arrangement of the present invention, the radio frequency modem is provided with a plurality of transmission ports; wherein each of the transmit ports corresponds to one of the first radio frequency amplifiers.
According to a further arrangement of the present invention, the first filter is provided in plurality; wherein each of the first filters corresponds to a frequency band.
In a further arrangement of the present invention, the radio frequency modem is provided with a plurality of receiving ports; wherein each of the receiving ports corresponds to one of the first filters.
In a further arrangement of the present invention, the first filter is a surface acoustic wave filter.
In a further aspect of the present invention, the first amplifier is a radio frequency power amplifier.
Based on the same inventive concept, the invention also provides a signal transceiving method of the radio frequency antenna device, which is applied to the radio frequency antenna device and comprises the following steps:
a transmitting signal sent by the radio frequency modem enters a first integrated switch after being amplified by a first radio frequency amplifier, and the transmitting signal is radiated out through the first antenna after passing through the first integrated switch;
and the received signal enters a second integrated switch through a second antenna, is output to a first filter through the second integrated switch, is filtered by the first filter and then enters the radio frequency modem.
Based on the same inventive concept, the present invention also provides a mobile terminal, which includes:
a printed circuit board; and
as mentioned above, the rf antenna device is disposed on the printed circuit board.
The invention provides a radio frequency antenna device, a signal receiving and transmitting method of the radio frequency antenna device and a mobile terminal, wherein the radio frequency antenna device comprises: the radio frequency modem, the first radio frequency amplifier, the first integrated switch, the first antenna, the first filter, the second integrated switch and the second antenna; a transmitting signal sent by the radio frequency modem enters the integrated switch after being amplified by the first radio frequency amplifier, and the transmitting signal is radiated out through the first antenna after passing through the first integrated switch; and the received signal enters the second integrated switch after passing through the second antenna, is output to the first filter through the second integrated switch, is filtered by the first filter and then enters the radio frequency modem. The invention distinguishes the transmitting path and the receiving path from the physical channel by using two different antennas, and the duplexer can be removed because the transmitting path and the receiving path do not need to be combined and then accessed into the integrated switch, thereby reducing the cost of the mobile terminal.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is an architecture diagram of a radio frequency antenna apparatus in a conventional scheme.
Fig. 2 is a structural diagram of the rf antenna device of the present invention.
Fig. 3 is an architecture diagram of a radio frequency antenna apparatus supporting multiple frequency bands for a mobile terminal according to the present invention.
Fig. 4 is a schematic flow chart of a signal transceiving method of the rf antenna apparatus according to the present invention.
The various symbols in the drawings: 100. a radio frequency modem; 200. a first radio frequency amplifier; 300. a first integrated switch; 400. a first antenna; 500. a first filter; 600. a second integrated switch; 700. a second antenna.
Detailed Description
The invention provides a radio frequency antenna device, a signal receiving and transmitting method of the radio frequency antenna device and a mobile terminal, which can remove materials of a duplexer so as to save the cost of the mobile terminal and the board arrangement space of a printed circuit board and further improve the product competitiveness. In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the embodiments and claims, the articles "a", "an", "the" and "the" may include plural forms as well, unless the context specifically dictates otherwise. If there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The inventor researches and discovers that in 3G, 4G and 5G communication, the frequency band comprises a TDD mode and an FDD mode. The frequency band transmission and reception of the TDD system is Time Division, i.e. Time Division Duplex (TDD), which means that the frequency band transmission and reception can be connected to a communication antenna through a switch. The FDD scheme, Frequency Division Duplex (FDD), refers to that receiving communication and transmitting communication are performed by using different radio Frequency points/frequencies. The FDD scheme has many advantages, such as high speed, high interference rejection, etc.
Compared with the TDD system, the FDD system has a characteristic that the transmitting communication and the receiving communication work simultaneously, but the FDD system cannot use a switch, so that a duplexer device is required to be used in a radio frequency path, so that the transmitting path and the receiving path are combined into one path and then connected to a communication antenna. As shown in fig. 1, in the conventional transmission path, the rf modem sends out a signal, and the signal is amplified by the rf amplifier PA, then enters the duplexer, and then enters the integrated switch, and finally is radiated by the antenna, while in the conventional reception path, the signal is received by the antenna, passes through the integrated switch, then passes through the duplexer, and then enters the rf modem for demodulation. A duplexer is used for each frequency band because the transmission and reception are combined into one path. The duplexer, also called antenna duplexer, is a special two-way three-terminal filter, and it needs to couple weak received signals and feed large transmitting power to the antenna, and requires that the two devices perform their functions without affecting each other. The general duplexer is composed of a spiral vibration cavity, because the working frequency is high, the influence of distribution parameters is large, a sealing sleeve body is usually made, all signal feeder lines are coaxial cables with good shielding effect, the shape and the material of the cavity body also require certain smoothness, the appearance is usually black for facilitating heat dissipation, and three signal ends generally adopt the requirements of standard high-frequency connector Q9 or L16 type high-frequency socket wireless communication on the duplexer. Therefore, the duplexer has high parameter requirements, complex process and high cost, and thus the cost of the mobile terminal is high. Especially, when one mobile terminal supports multiple frequency bands, multiple duplexers are needed to correspond to the frequency bands, which results in high cost of the mobile terminal and reduced market competitiveness.
In view of the above technical problems, the present invention provides a radio frequency antenna device, a method for receiving and transmitting signals from and to a radio frequency antenna device, and a mobile terminal, wherein the radio frequency antenna device includes: the radio frequency modem, the first radio frequency amplifier, the first integrated switch, the first antenna, the first filter, the second integrated switch and the second antenna; a transmitting signal sent by the radio frequency modem enters the integrated switch after being amplified by the first radio frequency amplifier, and the transmitting signal is radiated out through the first antenna after passing through the first integrated switch; and the received signal enters the second integrated switch after passing through the second antenna, is output to the first filter through the second integrated switch, is filtered by the first filter and then enters the radio frequency modem. The invention distinguishes the transmitting path and the receiving path from the physical channel by using two different antennas, and can remove the duplexer because the transmitting path and the receiving path do not need to be combined and then connected into the integrated switch. Especially, when the mobile terminal supports a plurality of FDD bands, duplexers on each band can be saved, thereby reducing the cost of the mobile terminal. In addition, the duplexer can save the board layout area of the printed circuit board while saving the duplexer, the area of the printed circuit board can be reduced because the installation space of the duplexer does not need to be reserved, the material cost of the printed circuit board can be saved, and the saved space can be used for using a battery with a larger size, so that stronger cruising ability is provided.
Referring to fig. 2 to 4, the present invention provides a preferred embodiment of an rf antenna device.
As shown in fig. 2, the present invention provides a radio frequency antenna apparatus, including: a radio frequency modem 100, a first radio frequency amplifier 200, a first integrated switch 300, a first antenna 400, a first filter 500, a second integrated switch 600, and a second antenna 700.
In some embodiments, the transmission and the reception are implemented by two different antennas, that is, one antenna is used for transmission communication, the other antenna is used for reception communication, the antenna used in the transmission path is a transmitting antenna, and the antenna used in the reception path is a receiving antenna, where the first antenna 400 is a transmitting antenna, the second antenna 700 is a receiving antenna, the transmitting antenna and the receiving antenna are 2 different antennas, and the transmitting antenna and the receiving antenna are not electrically connected to each other. The transmitting antenna and the receiving antenna can be realized through FPC, LDS or other metal materials, the transmitting antenna is used for converting electric signals on a printed circuit board circuit into electromagnetic waves to be radiated to the air, and the receiving antenna is used for converting the electromagnetic waves in the air into electric signals to be transmitted on the printed circuit board circuit.
The radio frequency modem (Transceiver), also called as radio frequency Transceiver, is a radio frequency chip commonly used, and has the functions of receiving and transmitting radio frequency signals, and mainly functions to modulate and transmit radio frequency signals, or to receive and demodulate signals. The inside of the radio frequency modem is composed of a transmitter and a receiver, so that a transmission port TX and a reception port RX of the radio frequency modem are separated.
In some embodiments, the first amplifier is a radio frequency power amplifier (RF PA). In the front stage circuit of the transmitter, the radio frequency signal power generated by the modulation oscillation circuit is very small, and the radio frequency signal needs to pass through a series of amplifying-buffer stage, intermediate amplifying stage and final power amplifying stage, and can be fed to the antenna to be radiated after obtaining enough radio frequency power. The operating frequency of the rf power amplifier is very high, but the frequency band is relatively narrow, and the rf power amplifier generally adopts a frequency-selective network as a load loop. The radio frequency power amplifier can be divided into three working states of A (A), B (B) and C (C) according to the difference of current conduction angles. The conduction angle of the class A amplifier is 360 degrees, the amplifier is suitable for small-signal low-power amplification, the conduction angle of the class B amplifier is equal to 180 degrees, and the conduction angle of the class C amplifier is smaller than 180 degrees. The class B and class C are both suitable for high-power working states, and the output power and the efficiency of the class C working state are the highest of the three working states. Most radio frequency power amplifiers work in class C, but the current waveform distortion of the class C amplifier is too large, and the class C amplifier can only be used for adopting a tuning loop as load resonant power amplification. Because the tuning loop has the filtering capability, the loop current and voltage are still close to a sine wave shape, and the distortion is very small. In this embodiment, the rf power amplifier may be a class a amplifier, and the rf power amplifier is mainly used to transmit the signal from the rf modem with enough power so that the signal can be transmitted over a long distance after being radiated by the transmitting antenna.
In some embodiments, the first filter 500 is a Surface Acoustic Wave (SAW) filter. Generally, a SAW filter is used in the receive diversity path. The signal is received from the diversity receiving antenna, and the SAW filter filters the signal with the frequency which can not be used, so that the situation that the signal outside the frequency band enters the chip to cause blockage and cause the chip to be incapable of demodulating the normal signal is avoided, and the SAW filter has the function of allowing the signal within a specific frequency range to pass and inhibiting the signal outside the frequency range.
In some embodiments, the first integrated switch 300 and the second integrated switch 600 are switches, a common terminal of the switch is connected to an antenna, and another terminal of the switch has a plurality of ports respectively connected to radio frequency paths of different frequency bands. When a certain frequency band is used for communication, the switch is controlled by the RF modem 100 to connect the RF circuit of the corresponding frequency band with the antenna.
Specifically, the first antenna 400 is connected to an output terminal of the first integrated switch 300, an input terminal of the first integrated switch 300 is connected to an output terminal of the first rf amplifier 200, and an input terminal of the first rf amplifier 200 is connected to a transmitting port of the rf modem 100. The second antenna 700 is connected to an input of the second integrated switch 600, an output of the second integrated switch 600 is connected to an input of the first filter 500, and an output of the first filter 500 is connected to a receiving port of the rf modem 100. Wherein, the radio frequency modem 100, the first radio frequency amplifier 200, the first integrated switch 300 and the first antenna 400 constitute a transmission channel, a transmission signal sent by the radio frequency modem 100 enters the first integrated switch 300 after being amplified by the first radio frequency amplifier 200, and the transmission signal is radiated out through the first antenna 400 after passing through the first integrated switch 300; the radio frequency modem 100, the first filter 500, the second integrated switch 600 and the second antenna 700 form a receiving path, a received signal enters the second integrated switch 600 after passing through the second antenna 700, the received signal is output to the first filter 500 through the second integrated switch 600, and enters the radio frequency modem 100 after being filtered by the first filter 500.
In the above technical solution, the present invention uses two different antennas, namely, the first antenna 400 and the second antenna 700. In the transmitting path, the rf modem 100 sends out a signal, amplifies the signal by the first rf amplifier 200, then enters the first integrated switch 300, and finally radiates out by the transmitting antenna. In the receiving path, the signal is received by the receiving antenna, passes through the integrated switch, enters the audio modem 100 for demodulation, and the two work at the same time without mutual influence.
Referring to fig. 3, in a further implementation manner of an embodiment, the first rf amplifier 200 is provided with a plurality of amplifiers. Each of the first rf amplifiers 200 corresponds to a frequency band. Further, the radio frequency modem 100 is provided with several transmission ports. Wherein each of the transmitting ports corresponds to one of the first rf amplifiers 200.
Specifically, when the mobile terminal supports a plurality of bands, the transmitting port of the radio frequency modem 100 is correspondingly connected with the first radio frequency amplifiers 200 of the corresponding number of bands, one end of each first radio frequency amplifier 200 is respectively connected with the transmitting port of the radio frequency modem 100, and the other end is respectively connected with the port of the first integrated switch 300. In the transmitting path, when a certain frequency band is used for communication, the first integrated switch 300 is controlled by the rf modem 100 to connect the rf circuit of the corresponding frequency band to the first antenna 400.
In a further implementation of an embodiment, referring to fig. 3, the first filter 500 is provided with a plurality of filters. Each of the first filters 500 corresponds to a frequency band. Further, the radio frequency modem 100 is provided with several receiving ports. Wherein each of the receiving ports corresponds to one of the first filters 500.
Specifically, when the mobile terminal supports a plurality of bands, the receiving port of the rf modem 100 is correspondingly connected with the first filters 500 of the corresponding number of bands, one end of each first filter 500 is connected with the receiving port of the rf modem 100, and the other end is connected with the port of the second integrated switch 600. In the receiving path, when a certain frequency band is used for communication, the second integrated switch 600 is controlled by the rf modem 100 to connect the rf circuit of the corresponding frequency band to the second antenna 700.
Referring to fig. 2 and fig. 3, in some embodiments, the present invention further provides a mobile terminal, which may be an electronic device using 3G, 4G, or 5G communication, such as a mobile phone or a tablet computer, where the mobile terminal includes: the radio frequency antenna device is arranged on the printed circuit board. Wherein the radio frequency antenna device comprises: a radio frequency modem 100, a first radio frequency amplifier 200, a first integrated switch 300, a first antenna 400, a first filter 500, a second integrated switch 600, and a second antenna 700. The first antenna 400 is connected to an output terminal of the first integrated switch 300, an input terminal of the first integrated switch 300 is connected to an output terminal of the first rf amplifier 200, and an input terminal of the first rf amplifier 200 is connected to a transmitting port of the rf modem 100. The second antenna 700 is connected to an input of the second integrated switch 600, an output of the second integrated switch 600 is connected to an input of the first filter 500, and an output of the first filter 500 is connected to a receiving port of the rf modem 100. Wherein, the radio frequency modem 100, the first radio frequency amplifier 200, the first integrated switch 300 and the first antenna 400 constitute a transmission channel, a transmission signal sent by the radio frequency modem 100 enters the integrated switch after being amplified by the first radio frequency amplifier 200, and the transmission signal is radiated out through the first antenna 400 after passing through the first integrated switch 300; the radio frequency modem 100, the first filter 500, the second integrated switch 600 and the second antenna 700 form a receiving path, a received signal enters the second integrated switch 600 after passing through the second antenna 700, the received signal is output to the first filter 500 through the second integrated switch 600, and enters the radio frequency modem 100 after being filtered by the first filter 500.
In the above technical solution, the present invention uses two different antennas, namely, the first antenna 400 and the second antenna 700. In the transmitting path, the rf modem 100 sends out a signal, amplifies the signal by the first rf amplifier 200, then enters the first integrated switch 300, and finally radiates out by the transmitting antenna. In the receiving path, the signal is received by the receiving antenna, passes through the integrated switch, enters the audio modem 100 for demodulation, and the two work at the same time without mutual influence. In addition, when saving the duplexer, can also save the board layout area of printed circuit board, because of do not need to reserve the installation space of duplexer, can reduce the area of printed circuit board, can enough save the material cost of printed circuit board, can be used for using the battery of bigger size again with the space of saving, in order to provide stronger duration, especially when supporting more than ten FDD frequency channels to mobile terminal, the duplexer on every frequency channel can all be saved, can save 10 or above materials like this, has reduced product cost by a wide margin.
Referring to fig. 4 in conjunction with fig. 2 and fig. 3, in some embodiments, the present invention further provides a method for receiving and transmitting signals of a radio frequency antenna apparatus, the method being applied to the radio frequency antenna apparatus, the method including the steps of:
s100, a transmitting signal sent by the radio frequency modem enters a first integrated switch after being amplified by a first radio frequency amplifier, and the transmitting signal is radiated out through a first antenna after passing through the first integrated switch;
specifically, the first antenna is connected to an output of the first integrated switch, an input of the first integrated switch is connected to an output of the first radio frequency amplifier, and an input of the first radio frequency amplifier is connected to a transmission port of the radio frequency modem. In a transmitting path, a transmitting signal sent by the radio frequency modem enters the integrated switch after being amplified by the first radio frequency amplifier, and the transmitting signal is radiated out through the first antenna after passing through the first integrated switch.
S200, a received signal enters a second integrated switch through a second antenna, the received signal is output to a first filter through the second integrated switch, and the received signal enters the radio frequency modem after being filtered by the first filter.
Specifically, the second antenna is connected to an input of the second integrated switch, an output of the second integrated switch is connected to an input of the first filter, and an output of the first filter is connected to a receiving port of the rf modem. In a receiving path, a receiving signal enters the second integrated switch after passing through the second antenna, and the receiving signal is output to the first filter through the second integrated switch, and enters the radio frequency modem after being filtered by the first filter.
Therefore, the transmitting path and the receiving path are distinguished from the physical channel, the receiving antenna and the transmitting antenna work simultaneously and do not influence each other, and therefore the transmitting path and the receiving path do not need to be combined and then connected into the integrated switch, a duplexer can be omitted, and the cost of the mobile terminal can be reduced. In addition, when saving the duplexer, can also save the board layout area of printed circuit board, because of do not need to reserve the installation space of duplexer, can reduce the area of printed circuit board, can enough save the material cost of printed circuit board, can be used for using the battery of bigger size again with the space of saving, in order to provide stronger duration, especially when supporting more than ten FDD frequency channels to mobile terminal, the duplexer on every frequency channel can all be saved, can save 10 or above materials like this, has reduced product cost by a wide margin.
In summary, the present invention provides a radio frequency antenna device, a signal transceiving method for a radio frequency antenna device, and a mobile terminal, wherein the radio frequency antenna device includes: the radio frequency modem, the first radio frequency amplifier, the first integrated switch, the first antenna, the first filter, the second integrated switch and the second antenna; a transmitting signal sent by the radio frequency modem enters the integrated switch after being amplified by the first radio frequency amplifier, and the transmitting signal is radiated out through the first antenna after passing through the first integrated switch; and the received signal enters the second integrated switch after passing through the second antenna, is output to the first filter through the second integrated switch, is filtered by the first filter and then enters the radio frequency modem. The present invention uses two different antennas, namely the first antenna and the second antenna. In the transmitting path, the radio frequency modem sends out a signal, the signal is amplified by the first radio frequency amplifier, then enters the first integrated switch, and finally is radiated by the transmitting antenna. In the receiving path, the signal is received by the receiving antenna, passes through the integrated switch, enters the radio frequency modem for demodulation, and the two work at the same time without mutual influence.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A radio frequency antenna device, comprising: the radio frequency modem, the first radio frequency amplifier, the first integrated switch, the first antenna, the first filter, the second integrated switch and the second antenna;
a transmitting signal sent by the radio frequency modem enters the integrated switch after being amplified by the first radio frequency amplifier, and the transmitting signal is radiated out through the first antenna after passing through the first integrated switch;
and a received signal enters the second integrated switch through the second antenna, is output to the first filter through the second integrated switch, is filtered by the first filter and then enters the radio frequency modem.
2. The radio frequency antenna device according to claim 1, wherein the first antenna is connected to an output of the first integrated switch, an input of the first integrated switch is connected to an output of the first radio frequency amplifier, and an input of the first radio frequency amplifier is connected to a transmission port of the radio frequency modem; the second antenna is connected with the input end of the second integrated switch, the output end of the second integrated switch is connected with the input end of the first filter, and the output end of the first filter is connected with the receiving port of the radio frequency modem.
3. The radio frequency antenna device according to claim 2, wherein the first radio frequency amplifier is provided in a plurality; each first radio frequency amplifier corresponds to one frequency band.
4. A radio frequency antenna device according to claim 3, wherein the radio frequency modem is provided with a plurality of transmission ports; wherein each of the transmit ports corresponds to one of the first radio frequency amplifiers.
5. The radio frequency antenna device according to claim 2, wherein the first filter is provided in plurality; wherein each of the first filters corresponds to a frequency band.
6. A radio frequency antenna device as claimed in claim 5, wherein the radio frequency modem is provided with a plurality of receiving ports; wherein each of the receiving ports corresponds to one of the first filters.
7. A radio frequency antenna device according to claim 1 or 6, wherein the first filter is a surface acoustic wave filter.
8. A radio frequency antenna device according to claim 1 or 4, wherein the first amplifier is a radio frequency power amplifier.
9. A method for transceiving signals of a radio frequency antenna device, applied to the radio frequency antenna device according to any one of claims 1 to 8, comprising:
a transmitting signal sent by the radio frequency modem enters a first integrated switch after being amplified by a first radio frequency amplifier, and the transmitting signal is radiated out through the first antenna after passing through the first integrated switch;
and the received signal enters a second integrated switch through a second antenna, is output to a first filter through the second integrated switch, is filtered by the first filter and then enters the radio frequency modem.
10. A mobile terminal, comprising:
a printed circuit board; and
the radio frequency antenna device as claimed in any of claims 1-8, arranged on the printed circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110505163.5A CN113300734A (en) | 2021-05-10 | 2021-05-10 | Radio frequency antenna device, signal receiving and transmitting method of radio frequency antenna device and mobile terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110505163.5A CN113300734A (en) | 2021-05-10 | 2021-05-10 | Radio frequency antenna device, signal receiving and transmitting method of radio frequency antenna device and mobile terminal |
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| CN113300734A true CN113300734A (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110505163.5A Pending CN113300734A (en) | 2021-05-10 | 2021-05-10 | Radio frequency antenna device, signal receiving and transmitting method of radio frequency antenna device and mobile terminal |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080212552A1 (en) * | 2004-06-30 | 2008-09-04 | Hitachi Metals, Ltd. | Multi-Band High Frequency Circuit, Multi-Band High-Frequency Component and Multi-Band Communications Apparatus |
| CN102404879A (en) * | 2011-11-04 | 2012-04-04 | 惠州Tcl移动通信有限公司 | Mobile communication terminal |
| CN102684864A (en) * | 2012-05-02 | 2012-09-19 | 惠州Tcl移动通信有限公司 | Mobile communication terminal |
| CN111817733A (en) * | 2020-07-28 | 2020-10-23 | 惠州Tcl移动通信有限公司 | Radio frequency structure and mobile terminal |
| CN111953358A (en) * | 2020-08-10 | 2020-11-17 | Tcl通讯（宁波）有限公司 | Radio frequency structure and mobile terminal |
-
2021
- 2021-05-10 CN CN202110505163.5A patent/CN113300734A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080212552A1 (en) * | 2004-06-30 | 2008-09-04 | Hitachi Metals, Ltd. | Multi-Band High Frequency Circuit, Multi-Band High-Frequency Component and Multi-Band Communications Apparatus |
| CN102404879A (en) * | 2011-11-04 | 2012-04-04 | 惠州Tcl移动通信有限公司 | Mobile communication terminal |
| CN102684864A (en) * | 2012-05-02 | 2012-09-19 | 惠州Tcl移动通信有限公司 | Mobile communication terminal |
| CN111817733A (en) * | 2020-07-28 | 2020-10-23 | 惠州Tcl移动通信有限公司 | Radio frequency structure and mobile terminal |
| CN111953358A (en) * | 2020-08-10 | 2020-11-17 | Tcl通讯（宁波）有限公司 | Radio frequency structure and mobile terminal |
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Application publication date: 20210824 |
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| RJ01 | Rejection of invention patent application after publication |