CN113810077A - Radio frequency circuit and mobile terminal - Google Patents
Radio frequency circuit and mobile terminal Download PDFInfo
- Publication number
- CN113810077A CN113810077A CN202110951665.0A CN202110951665A CN113810077A CN 113810077 A CN113810077 A CN 113810077A CN 202110951665 A CN202110951665 A CN 202110951665A CN 113810077 A CN113810077 A CN 113810077A
- Authority
- CN
- China
- Prior art keywords
- antenna
- frequency
- integrated switch
- mobile terminal
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
Abstract
The invention discloses a radio frequency circuit and a mobile terminal, wherein the radio frequency circuit comprises: a transmitter, a receiver, and a first antenna; the radio frequency circuit further includes: a first integrated switch, and a first duplexer; the first antenna is connected with a first integrated switch, and the output end of the first integrated switch is connected with the high-frequency diversity receiving end of the receiver; the first duplexer is respectively connected with the first integrated switch, the low-frequency transmitting end of the transmitter and the low-frequency main set receiving end of the receiver, and by means of the arrangement of the plurality of groups, the problems that in the prior art, when the combination of medium and high CA needs to be supported, the cost of devices is high, the loss is large, and the performance of the antenna is unfavorable are solved.
Description
Technical Field
The invention relates to the technical field of radio frequency, in particular to a radio frequency circuit and a mobile terminal.
Background
At the present of the high-speed development of the mobile internet, the holding amount of the intelligent mobile terminal is rapidly increased, and the global data traffic is greatly improved. There is an increasing desire to transmit more data content, such as more frequency bands, wirelessly.
In order to support a Carrier Aggregation (CA) function, an antenna in the prior art needs to use an expensive radio frequency device to combine each frequency band into one antenna, and particularly when a medium + high CA combination needs to be supported, the device cost is high, the device loss is large, the performance of the antenna is not good, and how to enable each antenna to support all frequency bands is a problem to be solved at present.
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 circuit and a mobile terminal, which are used to solve the problems of high device cost, large loss and unfavorable performance of the antenna when a medium + high CA combination needs to be supported in the prior art.
The technical scheme of the invention is as follows:
a radio frequency circuit, comprising: a transmitter, a receiver, and a first antenna; the radio frequency circuit further includes: a first integrated switch, and a first duplexer;
the first antenna is connected with a first integrated switch, the output end of the first integrated switch is connected with a high-frequency diversity receiving end of the receiver, and the receiver receives a high-frequency signal which is transmitted to the first integrated switch by the first antenna and distributed by the first integrated switch through the high-frequency diversity receiving end;
the first duplexer is respectively connected with the first integrated switch, the low-frequency transmitting end of the transmitter and the low-frequency main set receiving end of the receiver;
the first duplexer is used for receiving a signal sent by a low-frequency sending end of the transmitter, sending the signal to the first integrated switch and sending the signal to the first antenna through the first integrated switch;
or the first duplexer is used for receiving and receiving the low-frequency signal which is transmitted to the first integrated switch by the first antenna and distributed by the first integrated switch, and sending the low-frequency signal to a low-frequency main set receiving end of the receiver.
Further, the radio frequency circuit further includes: a second antenna, a second integrated switch, and a second duplexer;
the second antenna is connected with a second integrated switch, the output end of the second integrated switch is connected with an intermediate frequency diversity receiving end of the receiver, and the receiver receives intermediate frequency signals which are transmitted to the second integrated switch by the second antenna and distributed by the second integrated switch through the intermediate frequency diversity receiving end;
the second duplexer is respectively connected with the second integrated switch, the high-frequency transmitting end of the transmitter and the high-frequency main set receiving end of the receiver;
the second duplexer is used for receiving the signal sent by the high-frequency transmitting end of the transmitter, sending the signal to the second integrated switch and sending the signal to the second antenna through the second integrated switch;
or the second duplexer is used for receiving the high-frequency signal which is transmitted to the second integrated switch by the second antenna and distributed by the second integrated switch, and sending the high-frequency signal to a high-frequency main set receiving end of the receiver.
Further, the radio frequency circuit further includes: a third antenna, a third integrated switch, and a third duplexer;
the third antenna is connected with a third integrated switch, the output end of the third integrated switch is connected with a low-frequency diversity receiving end of the receiver, and the receiver receives a low-frequency signal which is transmitted to the third integrated switch by the third antenna and distributed by the third integrated switch through the low-frequency diversity receiving end;
the third duplexer is respectively connected with the third integrated switch, the intermediate frequency transmitting end of the transmitter and the intermediate frequency master set receiving end of the receiver;
the third duplexer is used for receiving a signal sent by the intermediate frequency transmitting end of the transmitter, sending the signal to the third integrated switch and sending the signal to the third antenna through the third integrated switch;
or, the third duplexer is configured to receive an intermediate frequency signal that is transmitted to the third integrated switch by the third antenna and is distributed by the third integrated switch, and send the intermediate frequency signal to an intermediate frequency master set receiving end of the receiver.
A mobile terminal comprises a mobile terminal body and further comprises the radio frequency circuit, wherein the radio frequency circuit is arranged in the mobile terminal body.
A combination of medium + high CA is achieved. In the radio frequency devices in the prior art, the radio frequency devices which can combine the intermediate frequency and the high frequency on the same antenna are very few, expensive and high in cost, so that most mobile terminals do not support the combination of medium and high CA. The high-frequency main set and the medium-frequency diversity are separated, and the radio frequency device can be avoided by using 2 antennas, the medium-high CA combination function can be realized, and the insertion loss caused by the device is also avoided.
Further, the first antenna is arranged on the top of the mobile terminal body.
The first antenna is arranged on the top of the mobile terminal, and a certain space is formed in the top of the interior of the mobile terminal, so that the design requirement of the interior space of the mobile terminal, which is more and more tense at present, can be met, and the function of the first antenna can be guaranteed not to be influenced.
Further, the second antenna is arranged on the side edge of the mobile terminal body facing to the top direction.
The antenna can be in a short distance with the first antenna arranged at the top of the mobile terminal, and the first antenna and the second antenna are ensured to be connected with the radio frequency signal path through the antenna elastic sheet arranged on the mobile terminal.
Further, the third antenna is arranged at the bottom of the mobile terminal body.
The third antenna is an intermediate frequency main set antenna and is a communication antenna with a main intermediate frequency band, and the third antenna is carried with low-frequency diversity which plays an auxiliary role in communication and has low performance requirement, so that the third antenna is arranged at the bottom in the movement, and the problem that the low-frequency tuning affects the performance of the intermediate frequency main set is avoided.
Further, the mobile terminal includes:
the main board is arranged at the top of the mobile terminal body;
the antenna small plate is arranged at the bottom of the mobile terminal body;
and the RF cable is arranged on the side edge of the middle part of the mobile terminal body, which deviates from the direction of the second antenna, and is connected between the main board and the antenna small board.
Through connect the radio frequency circuit between the antenna shell fragment on the antenna platelet, need not use RF cable to be connected to the antenna platelet, only 1 antenna need use RF cable in the mobile terminal links to the antenna platelet, only uses 1 RF cable, makes the mobile terminal cost is lower, simultaneously, also lower to the requirement of structure space and design complexity, has satisfied the little demand of mobile terminal inner space.
Further, a radio frequency chip is arranged on the main board and used for transmitting radio frequency signals.
The main board is also provided with BB chips, memory chips, power management chips, radio frequency chips and other chips and devices; specifically, the BB chip, the memory chip, the power management chip, the rf chip, and the like, and the device can be connected to the motherboard by soldering, so that the above chips and devices are more secure.
Furthermore, an antenna shrapnel is arranged on the antenna platelet;
the first antenna and the second antenna are connected with the radio frequency signal path through the antenna elastic sheet;
the third antenna introduces signals into the antenna small plate through the RF cable and is connected with the radio frequency signal passage through the antenna elastic sheet.
The beneficial effect of this scheme: according to the radio frequency circuit and the mobile terminal provided by the invention, the first antenna connected with the first integrated switch is arranged, the first integrated switch with the output end connected with the high-frequency diversity receiving end of the receiver is arranged, and the first duplexer respectively connected with the first integrated switch, the low-frequency transmitting end of the transmitter and the low-frequency main set receiving end of the receiver is arranged, so that the receiver receives high-frequency signals which are transmitted to the first integrated switch by the first antenna and distributed by the first integrated switch through the high-frequency diversity receiving end, the first duplexer is used for receiving signals transmitted by the low-frequency transmitting end of the transmitter, transmitting the signals to the first integrated switch and transmitting the signals to the first antenna through the first integrated switch, or the first duplexer is used for receiving signals transmitted to the first integrated switch by the first antenna, The low-frequency signal distributed by the first integrated switch is transmitted to the low-frequency main set receiving end of the receiver, so that the connected circuit splits each frequency band of low frequency (700- & gt 960Mhz), intermediate frequency (1.7G- & lt 2.2 & gt GHz) and high frequency (2.5G- & lt 2.7 & gt GHz), the low-frequency signal can be transmitted, the low-frequency main set and the high-frequency diversity signal can be received by the first integrated switch, the first duplexer and the first antenna, the requirements of transmitting the low-frequency signal and receiving the low-frequency main set and the high-frequency diversity signal can be met, and through the arrangement of a plurality of groups of different frequency bands, the CA combination requirements among various frequency bands can be met to the maximum extent, and the problems that in the prior art, when medium and high CA combination needs to be supported, the device cost is high, the loss is large, and the performance of the antenna is unfavorable are solved.
Drawings
Fig. 1 is a schematic diagram of an antenna layout structure according to an embodiment of a radio frequency circuit and a mobile terminal of the present invention;
FIG. 2 is a schematic diagram of an embodiment of a radio frequency circuit and a mobile terminal according to the present invention;
the reference numbers in the figures: 10. a transmitter; 20. a receiver; 30. a first integrated switch; 40. a second integrated switch; 50. a third integrated switch; 60. a first duplexer; 70. a second duplexer; 80. a third duplexer; 90. a first antenna; 100. a second antenna; 110. a third antenna; 120. a main board; 130. an antenna platelet; 140. an RF cable; 150. the mobile terminal body.
Detailed Description
The invention provides a radio frequency circuit and a mobile terminal, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail below by referring to the attached drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It should also be noted that the same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are 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 one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
At the present of the high-speed development of the mobile internet, the holding amount of the intelligent mobile terminal is rapidly increased, and the global data traffic is greatly improved. There is an increasing desire to transmit more data content, such as more frequency bands, wirelessly. In order to support a Carrier Aggregation (CA) function, an antenna in the prior art needs to use an expensive radio frequency device to combine frequency bands into one antenna, and particularly when a medium + high CA combination needs to be supported, the device cost is high, the device loss is large, the performance of the antenna is not good, and how to enable each antenna to support all frequency bands is a problem which needs to be solved at present.
The first embodiment is as follows:
as shown in fig. 2, the present invention provides a radio frequency circuit, including: a transmitter 10, a receiver 20, and a first antenna 90. The radio frequency circuit further includes: a first integrated switch 30, and a first duplexer 60. The first antenna 90 is connected to the first integrated switch 30, the output terminal of the first integrated switch 30 is connected to the high frequency diversity receiving terminal of the receiver 20, and the receiver 20 receives the high frequency signal transmitted by the first antenna 90 to the first integrated switch 30 and distributed by the first integrated switch 30 through the high frequency diversity receiving terminal. The first duplexer 60 is respectively connected to the first integrated switch 30, the low frequency transmitting end of the transmitter 10 and the low frequency main set receiving end of the receiver 20. The first duplexer 60 is configured to receive a signal sent by the low frequency transmitting end of the transmitter 10, send the signal to the first integrated switch 30, and send the signal to the first antenna 90 through the first integrated switch 30. Alternatively, the first duplexer 60 is configured to receive the low-frequency signal transmitted by the first antenna 90 to the first integrated switch 30 and distributed by the first integrated switch 30, and send the low-frequency signal to the low-frequency main set receiving end of the receiver 20. Through the above arrangement, it is ensured that the first integrated switch 30, the first duplexer 60, the first antenna 90, the low-frequency transmitting end of the transmitter 10, the low-frequency main set receiving end of the receiver 20, and the high-frequency diversity receiving end of the receiver 20 are separately connected to form a transmitting and receiving path, and the connected circuits split the respective frequency bands of low frequency (700 + 960Mhz), intermediate frequency (1.7G-2.2Ghz), and high frequency (2.5G-2.7Ghz), so as to be able to transmit low-frequency signals, receive low-frequency main signals, and receive high-frequency diversity signals through the first integrated switch 30, the first duplexer 60, and the first antenna 90, and be able to meet the requirements of transmitting low-frequency signals, receiving low-frequency main signals, and receiving high-frequency diversity signals.
In the above solution, the first antenna 90 connected to the first integrated switch 30 is provided, the first integrated switch 30 with an output end connected to the high-frequency diversity receiving end of the receiver 20 is provided, and the first duplexer 60 respectively connected to the first integrated switch 30, the low-frequency transmitting end of the transmitter 10 and the low-frequency main set receiving end of the receiver 20 are provided, so that the receiver 20 receives the high-frequency signal transmitted by the first antenna 90 to the first integrated switch 30 and distributed by the first integrated switch 30 through the high-frequency diversity receiving end, the first duplexer 60 is configured to receive the signal transmitted by the low-frequency transmitting end of the transmitter 10, transmit the signal to the first integrated switch 30, and transmit the signal to the first antenna 90 through the first integrated switch 30, or the first duplexer 60 is configured to receive the high-frequency signal transmitted by the first antenna 90 to the first integrated switch 30, The low-frequency signal distributed by the first integrated switch 30 is transmitted to the low-frequency main set receiving end of the receiver 20, so that the connected circuit splits each frequency band of low frequency (700 + 960Mhz), intermediate frequency (1.7G-2.2Ghz) and high frequency (2.5G-2.7Ghz), and can transmit the low-frequency signal, receive the low-frequency main signal and the high-frequency diversity signal through the first integrated switch 30, the first duplexer 60 and the first antenna 90, and can meet the requirements for transmitting the low-frequency signal and receiving the low-frequency main signal and the high-frequency diversity signal.
Example two:
on the basis of the first embodiment, as shown in fig. 2, the rf circuit further includes: a second antenna 100, a second integrated switch 40, and a second duplexer 70. The second antenna 100 is connected to the second integrated switch 40, an output terminal of the second integrated switch 40 is connected to the if diversity receiving terminal of the receiver 20, and the receiver 20 receives the if signal which is transmitted to the second integrated switch 40 by the second antenna 100 and distributed by the second integrated switch 40 through the if diversity receiving terminal. The second duplexer 70 is respectively connected to the second integrated switch 40, the high frequency transmitting end of the transmitter 10, and the high frequency main set receiving end of the receiver 20. The second duplexer 70 is configured to receive a signal sent by the high-frequency transmitting end of the transmitter 10, send the signal to the second integrated switch 40, and send the signal to the second antenna 100 through the second integrated switch 40, or the second duplexer 70 is configured to receive a high-frequency signal that is transmitted by the second antenna 100 to the second integrated switch 40 and distributed by the second integrated switch 40, and send the high-frequency signal to the high-frequency main set receiving end of the receiver 20. Through the above arrangement, it is ensured that the second integrated switch 40, the second duplexer 70, the second antenna 100, the high-frequency transmitting end of the transmitter 10, the high-frequency main set receiving end of the receiver 20, and the intermediate-frequency diversity receiving end of the receiver 20 are separately connected to form a transmitting and receiving path, and the connected circuits split the respective frequency bands of low frequency (700 + 960Mhz), intermediate frequency (1.7G-2.2Ghz), and high frequency (2.5G-2.7Ghz), so that the transmission of high-frequency signals, the reception of high-frequency main and intermediate-frequency diversity signals can be realized through the second integrated switch 40, the second duplexer 70, and the second antenna 100, and the requirements for the transmission of high-frequency signals, the reception of high-frequency main and intermediate-frequency diversity signals can be met.
As shown in fig. 2, in a specific embodiment of the present invention, the rf circuit further includes: a third antenna 110, a third integrated switch 50, and a third duplexer 80. The third antenna 110 is connected to the third integrated switch 50, an output terminal of the third integrated switch 50 is connected to the low frequency diversity receiving terminal of the receiver 20, and the receiver 20 receives the low frequency signal, which is transmitted to the third integrated switch 50 by the third antenna 110 and distributed by the third integrated switch 50, through the low frequency diversity receiving terminal. The third duplexer 80 is respectively connected to the third integrated switch 50, the intermediate frequency transmitting terminal of the transmitter 10 and the intermediate frequency main set receiving terminal of the receiver 20. The third duplexer 80 is configured to receive a signal sent by the intermediate frequency transmitting end of the transmitter 10, send the signal to the third integrated switch 50, and send the signal to the third antenna 110 through the third integrated switch 50. Or, the third duplexer 80 is configured to receive the intermediate frequency signal that is transmitted to the third integrated switch 50 by the third antenna 110 and is distributed by the third integrated switch 50, and send the intermediate frequency signal to the intermediate frequency master receiver of the receiver 20. Through the above arrangement, it is ensured that the third integrated switch 50, the third duplexer 80, the third antenna 110, the intermediate frequency transmitting end of the transmitter 10, the intermediate frequency main set receiving end of the receiver 20, and the low frequency diversity receiving end of the receiver 20 are separately connected to form a transmitting and receiving path, and the connected circuits split each frequency band of the low frequency (700 + 960Mhz), the intermediate frequency (1.7G-2.2Ghz), and the high frequency (2.5G-2.7Ghz), so as to transmit the intermediate frequency signals, and receive the intermediate frequency main and low frequency diversity signals through the third integrated switch 50, the third duplexer 80, and the third antenna 110, and thus can meet the requirements of transmitting the intermediate frequency signals, receiving the intermediate frequency main and low frequency diversity signals.
Specifically, the first antenna 90 uses an antenna tuning device to perform extended optimization on the performance and bandwidth of the low-frequency antenna, the antenna tuning device may be a tuning switch or an adjustable capacitor, and the second antenna 100 and the third antenna 110 do not use an antenna tuning device. The frequency bands and functions implemented by the first antenna 90 include low frequency main set transmission and reception and high frequency diversity reception. That is, the diversity reception of high frequency is combined with the main set of low frequency (including transmission and reception) into one path, and the first antenna 90 performs the transceiving function. The frequency bands and functions implemented by the second antenna 100 include high-frequency main set transmission and reception, and intermediate-frequency diversity reception, that is, intermediate-frequency diversity reception, and high-frequency main set (including transmission and reception) are combined into one path, and the second antenna 100 implements a transceiving function. The frequency band and function implemented by the third antenna 110 include the transmission and reception of the main set of intermediate frequencies, and the diversity reception of low frequencies, that is, the diversity reception of low frequencies, is combined with the main set of intermediate frequencies (including transmission and reception) into one path, and the transceiving function is implemented by the third antenna 110.
Through the arrangement of the first and second embodiments, the first integrated switch 30 may individually turn on or off the first antenna 90, the second integrated switch 40 may individually turn on or off the second antenna 100, and the third integrated switch 50 may individually turn on or off the third antenna 110, so as to ensure that when a certain antenna needs to be used, the corresponding integrated switch is turned on in time. The specific working principle is as follows: the transmitting end transmits a low-frequency signal, the low-frequency signal passes through the first duplexer 60 and the first integrated switch 30, and is finally transmitted through the first antenna 90, so as to complete low-frequency signal transmission, the first antenna 90 receives the signal, and the signal reaches a high-frequency diversity receiving interface of a receiving end through the first integrated switch 30, or reaches a low-frequency main set receiving interface of the receiving end through the first integrated switch 30 and the first duplexer 60, so as to complete high-frequency diversity and low-frequency main set receiving; the transmitting end transmits an intermediate frequency signal, the intermediate frequency signal passes through the third duplexer 80 and the third integrated switch 50, and is finally transmitted through the third antenna 110, so as to complete the transmission of the intermediate frequency signal, the signal received by the third antenna 110 reaches a low frequency diversity receiving interface of a receiving end through the third integrated switch 50, or reaches an intermediate frequency main set receiving interface of the receiving end through the third integrated switch 50 and the third duplexer 80, so as to complete the reception of the low frequency diversity and the intermediate frequency main set; the transmitting end transmits a high frequency signal, the high frequency signal passes through the second duplexer 70 and the second integrated switch 40, and is finally transmitted through the second antenna 100, so as to complete the transmission of the high frequency signal, the signal received by the second antenna 100 reaches an intermediate frequency diversity receiving interface of a receiving end through the second integrated switch 40, or reaches a high frequency main set receiving interface of the receiving end through the second integrated switch 40 and the second duplexer 70, so as to complete the medium frequency diversity and high frequency main set receiving.
Through the above arrangement, each of the first antenna 90, the second antenna 100 and the third antenna 110 is separately provided with the first integrated switch 30, the second integrated switch 40 and the third integrated switch 50, so that the first antenna 90, the second antenna 100 and the third antenna 110 can be separately turned on or off, and the working independence of each antenna is ensured; the first duplexer 60, the second duplexer 70 and the third duplexer 80 isolate signals at the transmitting end and the receiving end, so as to ensure that the receiver 20 and the transmitter 10 can work normally at the same time. The invention carries out maximum splitting on each frequency band in low frequency (700-960Mhz), intermediate frequency (1.7G-2.2Ghz) and high frequency (2.5G-2.7Ghz), and combines each antenna diversity, each diversity antenna does not need additional antenna, all the diversity antennas are combined into a main set antenna, the number of antennas of the whole machine is reduced to the maximum, the whole machine only needs 3 antennas, the cost and the design complexity are reduced, and the requirement on the space of the internal antenna of the mobile terminal is met. In the conventional antenna circuit structure design, the low, medium and high frequency main sets are all on one antenna, but the technical scheme of the invention can realize the low, medium and high frequency main sets through independent antennas respectively, can meet the CA combination requirements among various frequency bands to the maximum extent, and is an antenna framework compatible with a Non CA version.
Specifically, the first duplexer 60, the second duplexer 70, and the third duplexer 80 are all different frequency duplex stations, and are composed of six band-stop filters (wave traps), each resonating at a transmitting frequency and a receiving frequency, and a receiving-end filter resonating at the transmitting frequency and preventing the transmission power from entering the receiver, and a transmitting-end filter resonating at the receiving frequency. The first duplexer 60, the second duplexer 70 and the third duplexer 80 are all relatively special two-way three-terminal filters, and the duplexers are required to couple in a weak received signal and feed a large transmitting power to an antenna, and the duplexers are required to respectively complete functions without mutual influence. The first duplexer 60, the second duplexer 70 and the third duplexer 80 are used for isolating transmitting and receiving signals, ensuring that both receiving and transmitting can work normally at the same time, and are composed of two groups of band-stop filters with different frequencies, so that the transmission of local transmitting signals to a receiver is avoided.
Example three:
on the basis of the first embodiment and the second embodiment, as shown in fig. 1, the present invention further provides a mobile terminal, which includes a mobile terminal body 150, and the mobile terminal further includes the radio frequency circuit according to the first embodiment and the second embodiment, and the radio frequency circuit is disposed in the mobile terminal body 150. The mobile terminal can realize low, medium and high frequency main sets through independent antennas in the radio frequency circuit respectively, and can meet CA combination requirements among various frequency bands to the maximum extent.
Example four:
on the basis of the first embodiment, the second embodiment and the third embodiment, as shown in fig. 1, taking the mobile terminal body 150 as an example of being flatly placed on a horizontal plane, an end facing the mobile terminal earpiece is a top of the mobile terminal, an end facing the mobile terminal speaker is a bottom of the mobile terminal body 150, and left and right sides of the mobile terminal when being flatly placed are side edges of the mobile terminal. In a specific embodiment of the present invention, the first antenna 90 is disposed at the top of the mobile terminal body 150, and a certain space is formed at the top inside the mobile terminal body 150, so as to be capable of meeting the current increasingly tense design requirement of the internal space of the mobile terminal, so as to ensure that the function of the first antenna 90 is not affected.
As shown in fig. 1, in a specific embodiment of the present invention, the second antenna 100 is disposed on a side of the mobile terminal body 150 facing to the top direction, and the second antenna 100 is disposed on a side close to the top of the mobile terminal body 150, which may have a short distance from the first antenna 90 disposed on the top of the mobile terminal body 150, so as to ensure that the first antenna 90 and the second antenna 100 are connected to the rf signal path through the antenna spring disposed on the mobile terminal. Alternatively, the second antenna 100 may be disposed on the left side of the mobile terminal, or may be disposed on the right side of the mobile terminal, which may be selected according to design requirements.
As shown in fig. 1, in an embodiment of the present invention, the third antenna 110 is disposed at the bottom of the mobile terminal body 150. Because the third antenna 110 is an intermediate frequency main set antenna, which is a communication antenna with a main intermediate frequency band, and the third antenna 110 carries a low frequency diversity, which plays an auxiliary role in communication and has low requirement on performance, the third antenna 110 is disposed at the bottom of the mobile terminal and is close to the antenna platelet 130, and meanwhile, the third antenna 110 introduces signals into the antenna platelet 130 through a radio frequency cable and is connected with the radio frequency signal path through the antenna spring, and in addition, the low frequency diversity of the third antenna 110 does not use a tuning device, so that the problem that the low frequency tuning affects the performance of the intermediate frequency main set is avoided.
As shown in fig. 1, in a specific embodiment of the present invention, the mobile terminal includes: a main board 120, an antenna platelet 130, and an RF cable 140. The main board 120 is disposed on the top of the mobile terminal body 150, the antenna platelet 130 is disposed on the bottom of the mobile terminal body 150, and the RFcable140 is disposed on the side of the middle of the mobile terminal body 150 away from the second antenna 100 and connected between the main board 120 and the antenna platelet 130. Through the arrangement, the first antenna 90 and the second antenna 100 in the three antennas are arranged on one side of the main board 120, and radio frequency circuits are connected between antenna elastic sheets on the antenna small plate 130, so that the RFcable140 is not needed to be connected to the antenna small plate 130, only 1 antenna in the mobile terminal needs to be connected to the antenna small plate 130 through the RFcable140, only 1 RF cable140 is used, the cost of the mobile terminal is lower, meanwhile, the requirements on the structure space and the design complexity are lower, and the requirement on the small inner space of the mobile terminal is met. That is, each antenna supports a part of frequency bands, not all of the low, medium and high frequency bands, which reduces the requirement of each antenna for the antenna space of the mobile terminal and is more suitable for the current increasingly tense design of the internal space of the mobile terminal. Specifically, the RF cable140 is a radio frequency cable, and is a cable for transmitting electromagnetic energy within a radio frequency range, the RF cable140 can transmit a wider frequency band, and has high degree of protection against external interference, a small antenna effect, a small radiation loss, a simple structure, convenience in installation, and economy.
As shown in fig. 1, in an embodiment of the present invention, a radio frequency chip is disposed on the main board 120, and the radio frequency chip is used for transmitting a radio frequency signal. Since the rf chip is soldered on the motherboard 120, the rf signal is emitted from the motherboard 120. In a specific embodiment of the present invention, the main board 120 is further provided with a BB chip, a memory chip, a power management chip, a radio frequency chip, and other chips and devices; specifically, the BB chip, the memory chip, the power management chip, the rf chip, and the like, and the device can be connected to the motherboard 120 by soldering, so that the above chips and devices are firmer.
As shown in fig. 1, in the embodiment of the invention, an antenna elastic sheet is disposed on the antenna platelet 130. The first antenna 90 and the second antenna 100 are connected with the radio frequency signal path through the antenna spring; the third antenna 110 introduces a signal into the antenna platelet 130 through the RF cable140, and is connected to the RF signal path through the antenna spring.
Through the arrangement, the low frequency, the intermediate frequency and the high frequency of the mobile terminal support receiving diversity, namely each frequency band supports 2 paths of receiving channels to work simultaneously. In the CA dual carrier communication state, each carrier also has 2-path reception and works simultaneously, that is, at this time, 4-path reception is in total working simultaneously. The mobile terminal supports CA carrier aggregation, and the mobile terminal comprises various combination modes such as low-medium (such as CA B8+ B1), medium-medium (such as CA B1+ B3), medium-high (such as CA B1+ B7), low-high (such as CA B8+ B7) and the like, so that the influence of low-frequency tuning on the medium-frequency receiving performance during CA carrier aggregation is avoided. The first antenna 9090 is a low-frequency main set antenna, a tuning device is required to be used, but the first antenna 9090 carries an intermediate-frequency diversity, the requirement on the diversity performance is not high, the influence of low-frequency tuning on the intermediate frequency can be accepted, and the low-frequency main set is designed on the upper antenna, so that the loss generated when a user holds the mobile terminal can be avoided to the maximum extent.
In summary, in the radio frequency circuit and the mobile terminal provided by the present invention, the first antenna 90 connected to the first integrated switch 30 is provided, the first integrated switch 30 with an output end connected to the high frequency diversity receiving end of the receiver 20 is provided, and the first duplexer 60 respectively connected to the first integrated switch 30, the low frequency transmitting end of the transmitter 10, and the low frequency main set receiving end of the receiver 20 is provided, so that the receiver 20 receives the high frequency signal transmitted by the first antenna 90 to the first integrated switch 30 and distributed by the first integrated switch 30 through the high frequency diversity receiving end, the first duplexer 60 is configured to receive the signal transmitted by the low frequency transmitting end of the transmitter 10 and transmit the signal to the first integrated switch 30 and transmit the signal to the first antenna 90 through the first integrated switch 30, or the first duplexer 60 is configured to receive the high frequency signal transmitted by the first antenna 90 to the first integrated switch 30, The low-frequency signal distributed by the first integrated switch 30 is transmitted to the low-frequency main set receiving end of the receiver 20, so that the connected circuit splits each frequency band of low frequency (700 + 960Mhz), intermediate frequency (1.7G-2.2Ghz) and high frequency (2.5G-2.7Ghz), and can transmit the low-frequency signal, receive the low-frequency main signal and the high-frequency diversity signal through the first integrated switch 30, the first duplexer 60 and the first antenna 90, and can meet the requirements for transmitting the low-frequency signal and receiving the low-frequency main signal and the high-frequency diversity signal.
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 circuit, comprising: a transmitter, a receiver, and a first antenna; wherein the radio frequency circuit further comprises: a first integrated switch, and a first duplexer;
the first antenna is connected with a first integrated switch, the output end of the first integrated switch is connected with a high-frequency diversity receiving end of the receiver, and the receiver receives a high-frequency signal which is transmitted to the first integrated switch by the first antenna and distributed by the first integrated switch through the high-frequency diversity receiving end;
the first duplexer is respectively connected with the first integrated switch, the low-frequency transmitting end of the transmitter and the low-frequency main set receiving end of the receiver;
the first duplexer is used for receiving a signal sent by a low-frequency sending end of the transmitter, sending the signal to the first integrated switch and sending the signal to the first antenna through the first integrated switch;
or the first duplexer is used for receiving and receiving the low-frequency signal which is transmitted to the first integrated switch by the first antenna and distributed by the first integrated switch, and sending the low-frequency signal to a low-frequency main set receiving end of the receiver.
2. The radio frequency circuit of claim 1, further comprising: a second antenna, a second integrated switch, and a second duplexer;
the second antenna is connected with a second integrated switch, the output end of the second integrated switch is connected with an intermediate frequency diversity receiving end of the receiver, and the receiver receives intermediate frequency signals which are transmitted to the second integrated switch by the second antenna and distributed by the second integrated switch through the intermediate frequency diversity receiving end;
the second duplexer is respectively connected with the second integrated switch, the high-frequency transmitting end of the transmitter and the high-frequency main set receiving end of the receiver;
the second duplexer is used for receiving the signal sent by the high-frequency transmitting end of the transmitter, sending the signal to the second integrated switch and sending the signal to the second antenna through the second integrated switch;
or the second duplexer is used for receiving the high-frequency signal which is transmitted to the second integrated switch by the second antenna and distributed by the second integrated switch, and sending the high-frequency signal to a high-frequency main set receiving end of the receiver.
3. The radio frequency circuit of claim 2, further comprising: a third antenna, a third integrated switch, and a third duplexer;
the third antenna is connected with a third integrated switch, the output end of the third integrated switch is connected with a low-frequency diversity receiving end of the receiver, and the receiver receives a low-frequency signal which is transmitted to the third integrated switch by the third antenna and distributed by the third integrated switch through the low-frequency diversity receiving end;
the third duplexer is respectively connected with the third integrated switch, the intermediate frequency transmitting end of the transmitter and the intermediate frequency master set receiving end of the receiver;
the third duplexer is used for receiving a signal sent by the intermediate frequency transmitting end of the transmitter, sending the signal to the third integrated switch and sending the signal to the third antenna through the third integrated switch;
or, the third duplexer is configured to receive an intermediate frequency signal that is transmitted to the third integrated switch by the third antenna and is distributed by the third integrated switch, and send the intermediate frequency signal to an intermediate frequency master set receiving end of the receiver.
4. A mobile terminal comprising a mobile terminal body, characterized in that the mobile terminal further comprises the radio frequency circuit of claim 3, the radio frequency circuit being disposed within the mobile terminal body.
5. The mobile terminal of claim 4, wherein the first antenna is disposed on a top portion of the mobile terminal body.
6. The mobile terminal of claim 4, wherein the second antenna is disposed at a side edge of the mobile terminal body facing in a top direction.
7. The mobile terminal of claim 4, wherein the third antenna is disposed at a bottom of the mobile terminal body.
8. The mobile terminal according to claim 4, wherein the mobile terminal comprises:
the main board is arranged at the top of the mobile terminal body;
the antenna small plate is arranged at the bottom of the mobile terminal body;
and the RF cable is arranged on the side edge of the middle part of the mobile terminal body, which deviates from the direction of the second antenna, and is connected between the main board and the antenna small board.
9. The mobile terminal according to claim 8, wherein the main board is provided with a radio frequency chip, and the radio frequency chip is configured to transmit a radio frequency signal.
10. The mobile terminal according to claim 8, wherein the antenna platelet is provided with an antenna spring;
the first antenna and the second antenna are connected with the radio frequency signal path through the antenna elastic sheet;
the third antenna introduces signals into the antenna small plate through the RF cable and is connected with the radio frequency signal passage through the antenna elastic sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110951665.0A CN113810077B (en) | 2021-08-18 | 2021-08-18 | Radio frequency circuit and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110951665.0A CN113810077B (en) | 2021-08-18 | 2021-08-18 | Radio frequency circuit and mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113810077A true CN113810077A (en) | 2021-12-17 |
| CN113810077B CN113810077B (en) | 2023-06-20 |
Family
ID=78941447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110951665.0A Active CN113810077B (en) | 2021-08-18 | 2021-08-18 | Radio frequency circuit and mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113810077B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130051284A1 (en) * | 2011-08-23 | 2013-02-28 | Rf Micro Devices, Inc. | Carrier aggregation radio system |
| US20140105079A1 (en) * | 2012-10-11 | 2014-04-17 | Sony Mobile Communications Ab | Dual swapping switches to meet linearity demands of carrier aggregation |
| US20140376417A1 (en) * | 2013-06-20 | 2014-12-25 | Rf Micro Devices, Inc. | Carrier aggregation arrangement using triple antenna arrangement |
| CN105471557A (en) * | 2014-08-15 | 2016-04-06 | 深圳市中兴微电子技术有限公司 | Carrier aggregation device |
| CN106921405A (en) * | 2017-02-28 | 2017-07-04 | 维沃移动通信有限公司 | A kind of radio frequency front-end device |
| CN107483060A (en) * | 2017-07-25 | 2017-12-15 | 广东欧珀移动通信有限公司 | Radio circuit, antenna assembly and electronic equipment |
| WO2018014422A1 (en) * | 2016-07-22 | 2018-01-25 | 宇龙计算机通信科技(深圳)有限公司 | Antenna, carrier radio frequency circuit, terminal and carrier aggregation method |
| CN111355015A (en) * | 2018-12-24 | 2020-06-30 | 北京小米移动软件有限公司 | Mobile terminal |
| CN111463551A (en) * | 2020-04-21 | 2020-07-28 | 惠州Tcl移动通信有限公司 | Antenna device and mobile terminal |
| CN112886984A (en) * | 2021-01-26 | 2021-06-01 | Oppo广东移动通信有限公司 | Radio frequency circuit, antenna device and electronic equipment |
| WO2021136087A1 (en) * | 2019-12-31 | 2021-07-08 | Oppo广东移动通信有限公司 | Radio frequency module, control method, electronic device and storage medium |
| WO2021147519A1 (en) * | 2020-01-22 | 2021-07-29 | Oppo广东移动通信有限公司 | Radio frequency system and electronic device |
-
2021
- 2021-08-18 CN CN202110951665.0A patent/CN113810077B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130051284A1 (en) * | 2011-08-23 | 2013-02-28 | Rf Micro Devices, Inc. | Carrier aggregation radio system |
| US20140105079A1 (en) * | 2012-10-11 | 2014-04-17 | Sony Mobile Communications Ab | Dual swapping switches to meet linearity demands of carrier aggregation |
| US20140376417A1 (en) * | 2013-06-20 | 2014-12-25 | Rf Micro Devices, Inc. | Carrier aggregation arrangement using triple antenna arrangement |
| CN105471557A (en) * | 2014-08-15 | 2016-04-06 | 深圳市中兴微电子技术有限公司 | Carrier aggregation device |
| WO2018014422A1 (en) * | 2016-07-22 | 2018-01-25 | 宇龙计算机通信科技(深圳)有限公司 | Antenna, carrier radio frequency circuit, terminal and carrier aggregation method |
| CN106921405A (en) * | 2017-02-28 | 2017-07-04 | 维沃移动通信有限公司 | A kind of radio frequency front-end device |
| CN107483060A (en) * | 2017-07-25 | 2017-12-15 | 广东欧珀移动通信有限公司 | Radio circuit, antenna assembly and electronic equipment |
| CN111355015A (en) * | 2018-12-24 | 2020-06-30 | 北京小米移动软件有限公司 | Mobile terminal |
| WO2021136087A1 (en) * | 2019-12-31 | 2021-07-08 | Oppo广东移动通信有限公司 | Radio frequency module, control method, electronic device and storage medium |
| WO2021147519A1 (en) * | 2020-01-22 | 2021-07-29 | Oppo广东移动通信有限公司 | Radio frequency system and electronic device |
| CN111463551A (en) * | 2020-04-21 | 2020-07-28 | 惠州Tcl移动通信有限公司 | Antenna device and mobile terminal |
| CN112886984A (en) * | 2021-01-26 | 2021-06-01 | Oppo广东移动通信有限公司 | Radio frequency circuit, antenna device and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113810077B (en) | 2023-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108199728B (en) | Multi-way selector switch, radio frequency system and wireless communication equipment | |
| JP7038214B2 (en) | Multi-way switch, radio frequency system and wireless communication device | |
| CN108923790B (en) | Multi-way selector switch, radio frequency system and wireless communication equipment | |
| EP3540960A1 (en) | Multiway switch, radio frequency system, and wireless communication device | |
| CN108462498B (en) | Multi-way selector switch, radio frequency system and wireless communication equipment | |
| US10567027B2 (en) | Multiway switch, radio frequency system, and wireless communication device | |
| US10419040B1 (en) | Multiway switch, radio frequency system, and communication device | |
| CN108880602B (en) | Multi-way selector switch and related products | |
| EP3540962A1 (en) | Multiway switch, radio frequency system, and wireless communication device | |
| KR100467569B1 (en) | Microstrip patch antenna for transmitting and receiving | |
| US10623027B2 (en) | Multiway switch, radio frequency system, and communication device | |
| JP2021507638A (en) | Multi-way switch, radio frequency system and wireless communication device | |
| CN110808757A (en) | Radio frequency front-end circuit and terminal equipment | |
| EP3540963A1 (en) | Multiway switch, radio frequency system, and wireless communication device | |
| CN111800160A (en) | Electronic equipment | |
| CN111404576B (en) | Radio frequency system and electronic equipment | |
| EP4068500A1 (en) | Antenna in package device and wireless communication apparatus | |
| CN113810077B (en) | Radio frequency circuit and mobile terminal | |
| CN217468811U (en) | Antenna structure and terminal equipment | |
| CN117118464A (en) | Radio frequency antenna and mobile terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |