CN111355508A - Radio frequency circuit - Google Patents
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- CN111355508A CN111355508A CN202010091535.XA CN202010091535A CN111355508A CN 111355508 A CN111355508 A CN 111355508A CN 202010091535 A CN202010091535 A CN 202010091535A CN 111355508 A CN111355508 A CN 111355508A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
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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
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
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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
- H04B1/44—Transmit/receive switching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
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Abstract
The application discloses radio frequency circuit, wireless communication equipment, this radio frequency circuit is including the first power amplifier, first matching circuit, first time division switch and the first coupler that connect gradually, first antenna is connected to first coupler, first time division switch still connects gradually first wave filter and second power amplifier, first receiver is connected to second power amplifier, and wherein first radio frequency signal enlargies through first power amplifier, passes through in proper order first matching circuit first time division switch with first coupler reachs first antenna, and the received signal that corresponds is followed first antenna input passes through in proper order first time division switch first wave filter with second power amplifier reachs first receiver.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a radio frequency circuit.
Background
With the continuous development of mobile wireless communication technology, 5G mobile technology has matured and is practically applied. Unlike the previous generations of mobile communication technology, 5G has newly added several frequency bands including n 773300-4200 MHz, n783300-3800MHz, and n794400-5000 MHz.
Disclosure of Invention
The invention aims to provide a radio frequency circuit, which reduces the transmission power loss and improves the detection precision of the channel quality.
The application discloses radio frequency circuit includes: the first power amplifier, the first matching circuit, the first time division switch and the first coupler that connect gradually, first antenna is connected to the first coupler, first time division switch still connects gradually first wave filter and second power amplifier, the first receiver is connected to the second power amplifier, and wherein first radio frequency signal enlargies through first power amplifier, passes through in proper order first matching circuit first time division switch with first coupler reachs first antenna, and the received signal that corresponds is followed first antenna input passes through in proper order first time division switch first wave filter with second power amplifier reachs first receiver.
In a preferred embodiment, the antenna further includes a first high-order filter circuit, the first high-order filter circuit is disposed in the first matching circuit, the first time division switch, or the first coupler, and the first high-order filter circuit includes a capacitor, an inductor, and/or a microstrip line.
In a preferred embodiment, the first higher order filter circuit includes a capacitor and an inductor connected in series or in parallel.
In a preferred embodiment, the method further comprises the following steps: the second antenna is connected with the second coupler, the second time division switch is further connected with the second filter and the fourth power amplifier in sequence, the fourth power amplifier is connected with the second receiver, a second radio-frequency signal is amplified through the third power amplifier and sequentially passes through the second matching circuit, the second time division switch and the second coupler to reach the second antenna, a corresponding receiving signal is input from the second antenna and sequentially passes through the second time division switch, the second filter and the fourth power amplifier to reach the second receiver, and the frequency band of the second radio-frequency signal is different from that of the first radio-frequency signal.
In a preferred example, the first radio frequency signal is a radio frequency signal of n 773300-4200 MHz, and the second radio frequency signal is a radio frequency signal of n794400-5000 MHz.
In a preferred embodiment, the antenna further includes a second higher-order filter circuit, the second higher-order filter circuit is disposed in the second matching circuit, the second time-division switch, or the second coupler, and the second higher-order filter circuit includes a capacitor, an inductor, and/or a microstrip line.
In another aspect, the present application discloses a radio frequency circuit, including: the antenna comprises a first power amplifier, a first matching circuit, a channel switch and a first coupler which are sequentially connected, wherein the first coupler is connected with a first antenna, the first time division switch is also sequentially connected with a first filter and a second power amplifier, the second power amplifier is connected with a first receiver, a first radio-frequency signal is amplified through the first power amplifier and sequentially passes through the first matching circuit, the first time division switch and the first coupler to reach the first antenna, and a corresponding receiving signal is input from the first antenna and sequentially passes through the first time division switch, the first filter and the second power amplifier to reach the first receiver; connect to in proper order channel switch's third power amplifier and second matching circuit, channel switch passes through the second coupler and connects the second antenna, channel switch still connects gradually second wave filter and fourth power amplifier, fourth power amplifier connects the second receiver, and wherein second radio frequency signal enlargies through third power amplifier, passes through in proper order second matching circuit channel switch with the second coupler reachs the second antenna, corresponding received signal follows the second antenna input, passes through in proper order channel switch the second wave filter with fourth power amplifier reachs the second receiver, wherein the frequency channel of second radio frequency signal with the frequency channel of first radio frequency signal is different.
In a preferred embodiment, the antenna further includes a first high-order filter circuit, the first high-order filter circuit is disposed in the first matching circuit, the channel switch, or the first coupler, and the first high-order filter circuit includes a capacitor, an inductor, and/or a microstrip line.
In a preferred embodiment, the antenna further includes a second higher-order filter circuit, the second higher-order filter circuit is disposed in the second matching circuit, the channel switch, or the second coupler, and the second higher-order filter circuit includes a capacitor, an inductor, and/or a microstrip line.
The application also discloses wireless communication equipment, and the wireless communication equipment adopts the radio frequency circuit.
Compared with the prior art, the method has the following beneficial effects:
in the method and the device, the loss of a transmission path is reduced, and the channel detection quality is improved. And the high-order filter circuit plays an additional role in inhibiting 2-order, 3-order or high-order harmonics generated by the radio frequency power amplifier, and meets the specification requirement of the transmitting power of the mobile terminal, so that the transmitting power of the 2-order, 3-order or high-order harmonics generated by the transmitting power amplifier is kept below-33 dBm.
The present specification describes a number of technical features distributed throughout the various technical aspects, and if all possible combinations of technical features (i.e. technical aspects) of the present specification are listed, the description is made excessively long. In order to avoid this problem, the respective technical features disclosed in the above summary of the invention of the present application, the respective technical features disclosed in the following embodiments and examples, and the respective technical features disclosed in the drawings may be freely combined with each other to constitute various new technical solutions (which should be regarded as having been described in the present specification) unless such a combination of the technical features is technically infeasible. For example, in one example, the feature a + B + C is disclosed, in another example, the feature a + B + D + E is disclosed, and the features C and D are equivalent technical means for the same purpose, and technically only one feature is used, but not simultaneously employed, and the feature E can be technically combined with the feature C, then the solution of a + B + C + D should not be considered as being described because the technology is not feasible, and the solution of a + B + C + E should be considered as being described.
Drawings
Fig. 1a is a schematic diagram of an rf circuit according to an embodiment of the invention.
Fig. 1b is a schematic diagram of an improved rf circuit in an embodiment of the invention.
Fig. 2a is a schematic diagram of an rf circuit according to another embodiment of the present invention.
Fig. 2b is a schematic diagram of an improved rf circuit in another embodiment of the present invention.
FIG. 3a is a schematic diagram of an RF circuit according to another embodiment of the present invention.
Fig. 3b is a schematic diagram of an improved rf circuit in another embodiment of the present invention.
FIG. 4 is a diagram of a high-order filter circuit according to an embodiment of the invention.
FIG. 5 is a diagram of a high-order filter circuit according to another embodiment of the present invention.
FIG. 6 is a diagram of a high-order filter circuit according to another embodiment of the present invention.
FIG. 7 is a diagram of a high-order filter circuit according to another embodiment of the present invention.
FIG. 8 is a diagram of a high-order filter circuit according to another embodiment of the present invention.
Detailed Description
In the following description, numerous technical details are set forth in order to provide a better understanding of the present application. However, it will be understood by those skilled in the art that the technical solutions claimed in the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Example one
The application discloses a radio frequency circuit, and fig. 1a is a schematic diagram of the radio frequency circuit. The radio frequency circuit includes: a first power amplifier 101a, a first matching circuit 102a, a first time division switch 103a, a first filter 104a and a first coupler 105a connected in this order, the first coupler 105a is connected to a first antenna ANT, the first time division switch 103a is further connected to a second power amplifier 106a, the second power amplifier 106a is connected to the first receiver n77/79RX, wherein a first rf signal n77/79RFin is amplified by a first power amplifier 101a, passes through the first matching circuit 102a, the first time division switch 103a, the first filter 104a and the first coupler 105a in sequence to reach the first antenna ANT, a corresponding reception signal is input from the first antenna ANT, passes through the first filter 104a, the first time division switch 103a, and the second power amplifier 106a in this order, and reaches the first receiver n77/79 RX.
In a preferred example, the first radio frequency signal is a radio frequency signal of n 773300-4200 MHz or a radio frequency signal of n794400-5000 MHz.
In the present embodiment, an improved rf circuit is disclosed, and fig. 1b is a block diagram of the rf circuit. The radio frequency circuit includes: a first power amplifier 101b, a first matching circuit 102b, a first time division switch 103b and a first coupler 105b connected in this order, the first coupler 105b is connected to a first antenna ANT, the first time division switch 103b is further connected to a first filter 104b and a second power amplifier 106b, the second power amplifier 106b is connected to the first receiver n77/79RX, wherein the first rf signal n77/79RFin is amplified by the first power amplifier 101b, passes through the first matching circuit 102b, the first time division switch 103b and the first coupler 105b in sequence to reach the first antenna ANT, a corresponding reception signal is input from the first antenna ANT, passes through the first time division switch 103B, the first filter 104B, and the second power amplifier 106B in this order, and reaches the first receiver n77/79 RX. In this embodiment, the filter shared by the original transmission and reception is used separately in the reception path before the low-noise amplifier 106b, so that the loss of the transmission path is reduced.
The matching circuit in this embodiment includes a capacitor, an inductor, a transmission line, or any combination thereof, and adjusts the impedance of the branch in the rf circuit through the combination of the capacitor, the inductor, and the transmission line,
in a preferred embodiment, the present embodiment further includes a first higher-order filter circuit (not shown in fig. 1 b), the first higher-order filter circuit is disposed in the first matching circuit 102b, the first time division switch 103b, or the first coupler 105b, and the first higher-order filter circuit includes a capacitor, an inductor, and/or a microstrip line.
In a preferred embodiment, the first higher order filter circuit includes a capacitor and an inductor connected in series or in parallel. Fig. 4-8 are schematic diagrams of a first high-order filtering circuit according to an embodiment of the present application. The high-order filter circuit is used for suppressing 2 nd order and 3 rd order or higher harmonic waves generated by the transmitting power amplifier, so that the power transmitted by the transmitting power amplifier at an antenna port is below-33 dBm.
Referring to fig. 4, the first high-order filter circuit includes an inductor 401 and a capacitor 402, the inductor 401 is connected in series to the first matching circuit 102b, the first time division switch 103b, or the first coupler 105b, the capacitor 402 is connected in parallel to the inductor 401, and one end of the capacitor 402 is grounded.
Referring to fig. 5, the first high-order filter circuit includes inductors 501 and 503 and a capacitor 502, the inductors 501 and 503 are connected in series in the first matching circuit 102b, the first time-division switch 103b or the first coupler 105b, the capacitor 502 is connected between the inductors 501 and 503, and one end of the capacitor 502 is grounded.
Referring to fig. 6, the first high-order filter circuit includes an inductor 601 and capacitors 602 and 503, the inductor 601 is connected in series to the first matching circuit 102b, the first time division switch 103b or the first coupler 105b, the capacitors 602 and 603 are respectively connected to two ends of the inductor 601, and the other ends of the capacitors 602 and 603 are grounded.
Referring to fig. 7, the first high-order filtering circuit includes an inductor 701 and a capacitor 702, wherein the inductor 701 is connected in parallel with the capacitor 702 and is connected in series in the first matching circuit 102b, the first time-division switch 103b or the first coupler 105 b.
Referring to fig. 8, the first high-order filtering circuit includes an inductor 801 and a capacitor 802, the inductor 801 is connected in series with the capacitor 802, and is connected in parallel to the first matching circuit 102b, the first time-division switch 103b, or the first coupler 105 b.
Example two
The application discloses a radio frequency circuit, and fig. 2a is a block diagram of the radio frequency circuit. The radio frequency circuit includes: a first power amplifier 201a, a first matching circuit 202a, a first time division switch 203a, a first filter 204a and a first coupler 205a connected in this order, the first coupler 205a is connected to a first antenna ANT1, the first time division switch 203a is further connected to a second power amplifier 206a, the second power amplifier 206a is connected to a first receiver n77RX, wherein the first rf signal n77RFin is amplified by the first power amplifier 201a, passes through the first matching circuit 202a, the first time division switch 203a, the first filter 204a and the first coupler 205a in sequence to reach the first antenna ANT1, a corresponding reception signal is input from the first antenna ANT1, passes through the first filter 204a, the first time division switch 203a, and the second power amplifier 206a in order, and reaches the first receiver n77 RX.
The radio frequency circuit further comprises a third power amplifier 207a, a second matching circuit 208a, a second time division switch 209a, a second filter 210a and a second coupler 211a connected in sequence, the second coupler 211a is connected to a second antenna ANT2, the second time switch 209a is further connected to a fourth power amplifier 212a, the fourth power amplifier 212a is connected to a second receiver n79 RX, wherein the second rf signal n79 RFin is amplified by the third power amplifier 207a, passes through the second matching circuit 208a, the second time switch 209a, the second filter 210a and the second coupler 211a in sequence to reach the second antenna ANT2, a corresponding reception signal is input from the second antenna ANT2, passes through the second filter 210a, the second time division switch 209a, and the fourth power amplifier 212a in this order, and reaches the second receiver n79 RX.
Wherein the frequency band of the second radiofrequency signal n79 RFin is different from the frequency band of the first radiofrequency signal n77 RFin. In a preferred example, the first radio frequency signal is a radio frequency signal of n 773300-4200 MHz, and the second radio frequency signal is a radio frequency signal of n794400-5000 MHz.
In the present embodiment, an improved rf circuit is disclosed, and fig. 2b is a schematic diagram of the rf circuit. The radio frequency circuit includes: a first power amplifier 201B, a first matching circuit 202B, a first time division switch 203B and a first coupler 205B connected in sequence, the first coupler 205B is connected to a first antenna ANT1, the first time division switch 203B is also connected to a first filter 204B and a second power amplifier 206B, the second power amplifier 206B is connected to a first receiver n77RX, wherein a first radio frequency signal n779 RFin is amplified by the first power amplifier 201B, passes through the first matching circuit 202B, the first time division switch 203B and the first coupler 205B in sequence to reach the first antenna ANT2, and a corresponding received signal is input from the first antenna ANT2, passes through the first time division switch 203B, the first filter 204B and the second power amplifier 206B in sequence to reach the first receiver n77 RX.
The radio frequency circuit further comprises a third power amplifier 207a, a second matching circuit 208a, a second time division switch 209a and a second coupler 211a connected in sequence, the second coupler 211a is connected to a second antenna ANT2, the second time switch 209a is further connected to a second filter 210a and a fourth power amplifier 212a, the fourth power amplifier 212a is connected to a second receiver n79 RX, wherein the second rf signal n79 RFin is amplified by the third power amplifier 207a, passes through the second matching circuit 208a, the second time switch 209a and the second coupler 211a in sequence to reach the second antenna ANT2, a corresponding reception signal is input from the second antenna ANT2, passes through the second time division switch 209a, the second filter 210a, and the fourth power amplifier 212a in this order, and reaches the second receiver n79 RX.
In a preferred embodiment, the improved rf circuit further includes a first higher-order filter circuit (not shown in fig. 2 b), the first higher-order filter circuit is disposed in the first matching circuit 202b, the first time-division switch 203b, or the first coupler 205b, and the first higher-order filter circuit includes a capacitor, an inductor, and/or a microstrip line. The first higher order filter circuit may employ the higher order filter circuits shown in fig. 4 to 8.
In a preferred embodiment, the improved rf circuit further includes a second higher-order filter circuit (not shown in fig. 2 b), the second higher-order filter circuit is disposed in the second matching circuit 208b, the second time division switch 209b, or the second coupler 211b, and the second higher-order filter circuit includes a capacitor, an inductor, and/or a microstrip line. The second higher order filter circuit may employ the higher order filter circuits shown in fig. 4 to 8.
EXAMPLE III
In the embodiment, a radio frequency circuit is disclosed, and fig. 3a is a schematic diagram of the radio frequency circuit. The radio frequency circuit includes: a first power amplifier 301a, a first matching circuit 302a, a first time division switch 303a, a first filter 304a and a first coupler 312a connected in this order, the first filter 304a and the first coupler 312a are connected to the channel switch 311a, the first coupler 312a is connected to a first antenna ANT1, the first time division switch 303a is further connected to a second power amplifier 305a, the second power amplifier 305a is connected to a first receiver n77RX, wherein a first rf signal n77RFin is amplified by a first power amplifier 301a, passes through the first matching circuit 302a, the first time division switch 303a, the first filter 304a and the first coupler 312a in sequence to reach the first antenna ANT1, from the first antenna input ANT1, the corresponding received signal passes through the first filter 304a, the first time division switch 303a and the second power amplifier 305a in order to the first receiver n77 RX.
The rf circuit further includes a third power amplifier 306a, a second matching circuit 307a, a second time switch 308a, a second filter 309a and a second coupler 313a, which are connected in sequence, wherein the second filter 309a and the second coupler 313a are connected to a channel switch 311a, the second coupler 311a is connected to a second antenna ANT2, the second time switch 308a is further connected to a fourth power amplifier 310a, the fourth power amplifier 310a is connected to a second receiver n79 RX, wherein a second rf signal n79 RFin is amplified by the third power amplifier 306a, passes through the second matching circuit 307a, the second time switch 308a, the second filter 309a and the second coupler 313a in sequence to reach the second antenna ANT2, and a corresponding received signal passes through the second antenna ANT2, the second filter 309a, the second antenna ANT2 in sequence, The second time-division switch 308a and the fourth power amplifier 310a reach the second receiver n79 RX.
In the present embodiment, an improved rf circuit is disclosed, and fig. 3b is a block diagram of the rf circuit. The radio frequency circuit includes: a first power amplifier 301b, a first matching circuit 302b, a pass switch 311b and a first coupler 105b connected in sequence, the first coupler 311b is connected to a first antenna ANT1, the pass switch 311b is also connected in sequence to a first filter 304b and a second power amplifier 305b, the second power amplifier 305b is connected to a first receiver n77RX, wherein a first radio frequency signal n77RFin is amplified by the first power amplifier 301b, passes through the first matching circuit 302b, the pass switch 311b and the first coupler 312b in sequence to reach the first antenna ANT1, and a corresponding received signal is input from the first antenna input ANT1, passes through the pass switch 311b, the first filter 304b and the second power amplifier 305b in sequence to reach the first receiver n77 RX.
The radio frequency circuit further includes: a third power amplifier 306b and a second matching circuit 307b sequentially connected to the channel switch 311b, the channel switch 311b is connected to a second antenna ANT2 through a second coupler 313b, the pass switch 311b is further sequentially connected to a second filter 309b and a fourth power amplifier 310b, the fourth power amplifier 310b is connected to a second receiver n79 RX, wherein a second radio frequency signal n79 RFin is amplified by the third power amplifier 306b, sequentially passes through the second matching circuit 307b, the channel switch 311b and the second coupler 313b to reach the second antenna ANT2, and a corresponding received signal is input from the second antenna ANT2, sequentially passes through the channel switch 311b, the second filter 309b and the fourth power amplifier 310b to reach the second receiver n79 RX.
Wherein the frequency band of the second radiofrequency signal n79 RFin is different from the frequency band of the first radiofrequency signal n77 RFin. In a preferred example, the first radio frequency signal is a radio frequency signal of n 773300-4200 MHz, and the second radio frequency signal is a radio frequency signal of n794400-5000 MHz.
In a preferred embodiment, the improved rf circuit further includes a first higher-order filter circuit (not shown in fig. 2 b), the first higher-order filter circuit is disposed in the first matching circuit 302b, the channel switch 311b, or the first coupler 312b, and the first higher-order filter circuit includes a capacitor, an inductor, and/or a microstrip line. The first higher order filter circuit may employ the higher order filter circuits shown in fig. 4 to 8.
In a preferred embodiment, the radio frequency circuit further includes a second higher-order filter circuit (not shown in fig. 3 b), the second higher-order filter circuit is disposed in the second matching circuit, the channel switch, or the second coupler, and the second higher-order filter circuit includes a capacitor, an inductor, and/or a microstrip line. The second higher order filter circuit may employ the higher order filter circuits shown in fig. 4 to 8.
Another embodiment of the present application further discloses a wireless communication device, where the wireless communication device uses the above radio frequency circuit, and includes the above first antenna, second antenna, third antenna, and fourth antenna. The wireless communication devices to which embodiments of the present application relate may include electronic devices or network devices, which may be various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices linked to wireless modems having wireless communication capabilities, as well as various forms of user equipment, mobile terminals, terminal devices, and the like.
It is noted that, in the present patent application, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the use of the verb "comprise a" to define an element does not exclude the presence of another, same element in a process, method, article, or apparatus that comprises the element. In the present patent application, if it is mentioned that a certain action is executed according to a certain element, it means that the action is executed according to at least the element, and two cases are included: performing the action based only on the element, and performing the action based on the element and other elements. The expression of a plurality of, a plurality of and the like includes 2, 2 and more than 2, more than 2 and more than 2.
All documents mentioned in this specification are to be considered as being incorporated in their entirety into the disclosure of the present application so as to be subject to modification as necessary. It should be understood that the above description is only a preferred embodiment of the present disclosure, and is not intended to limit the scope of the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of one or more embodiments of the present disclosure should be included in the scope of protection of one or more embodiments of the present disclosure.
In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
Claims (10)
1. A radio frequency circuit, comprising: the first power amplifier, the first matching circuit, the first time division switch and the first coupler that connect gradually, first antenna is connected to the first coupler, first time division switch still connects gradually first wave filter and second power amplifier, the first receiver is connected to the second power amplifier, and wherein first radio frequency signal enlargies through first power amplifier, passes through in proper order first matching circuit first time division switch with first coupler reachs first antenna, and the received signal that corresponds is followed first antenna input passes through in proper order first time division switch first wave filter with second power amplifier reachs first receiver.
2. The radio frequency circuit of claim 1, further comprising a first high order filtering circuit disposed in the first matching circuit, the first time division switch, or the first coupler, the first high order filtering circuit comprising a capacitor, an inductor, and/or a microstrip line.
3. The radio frequency circuit of claim 2, wherein the first higher order filtering circuit comprises a capacitor and an inductor in series or in parallel.
4. The radio frequency circuit of claim 1, further comprising: the second antenna is connected with the second coupler, the second time division switch is further connected with the second filter and the fourth power amplifier in sequence, the fourth power amplifier is connected with the second receiver, a second radio-frequency signal is amplified through the third power amplifier and sequentially passes through the second matching circuit, the second time division switch and the second coupler to reach the second antenna, a corresponding receiving signal is input from the second antenna and sequentially passes through the second time division switch, the second filter and the fourth power amplifier to reach the second receiver, and the frequency band of the second radio-frequency signal is different from that of the first radio-frequency signal.
5. The radio frequency circuit according to claim 4, wherein the first radio frequency signal is a radio frequency signal of n 773300-4200 MHz, and the second radio frequency signal is a radio frequency signal of n794400-5000 MHz.
6. The radio frequency circuit according to claim 4, further comprising a second higher order filtering circuit disposed in the second matching circuit, the second time division switch, or the second coupler, the second higher order filtering circuit comprising a capacitor, an inductor, and/or a microstrip line.
7. A radio frequency circuit, comprising: the antenna comprises a first power amplifier, a first matching circuit, a channel switch and a first coupler which are sequentially connected, wherein the first coupler is connected with a first antenna, the first time division switch is also sequentially connected with a first filter and a second power amplifier, the second power amplifier is connected with a first receiver, a first radio-frequency signal is amplified through the first power amplifier and sequentially passes through the first matching circuit, the first time division switch and the first coupler to reach the first antenna, and a corresponding receiving signal is input from the first antenna and sequentially passes through the first time division switch, the first filter and the second power amplifier to reach the first receiver; connect to in proper order channel switch's third power amplifier and second matching circuit, channel switch passes through the second coupler and connects the second antenna, channel switch still connects gradually second wave filter and fourth power amplifier, fourth power amplifier connects the second receiver, and wherein second radio frequency signal enlargies through third power amplifier, passes through in proper order second matching circuit channel switch with the second coupler reachs the second antenna, corresponding received signal follows the second antenna input, passes through in proper order channel switch the second wave filter with fourth power amplifier reachs the second receiver, wherein the frequency channel of second radio frequency signal with the frequency channel of first radio frequency signal is different.
8. The radio frequency circuit of claim 7, further comprising a first higher order filtering circuit disposed in the first matching circuit, the channel switch, or the first coupler, the first higher order filtering circuit comprising a capacitive, inductive, and/or microstrip line.
9. The radio frequency circuit of claim 7, further comprising a second higher order filtering circuit disposed in the second matching circuit, the channel switch, or the second coupler, the second higher order filtering circuit comprising a capacitive, inductive, and/or microstrip line.
10. A wireless communication device, characterized in that a radio frequency circuit according to any of claims 1-9 is used.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010091535.XA CN111355508A (en) | 2020-02-13 | 2020-02-13 | Radio frequency circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010091535.XA CN111355508A (en) | 2020-02-13 | 2020-02-13 | Radio frequency circuit |
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| CN111355508A true CN111355508A (en) | 2020-06-30 |
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| CN202010091535.XA Pending CN111355508A (en) | 2020-02-13 | 2020-02-13 | Radio frequency circuit |
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| CN113114300A (en) * | 2021-03-29 | 2021-07-13 | 联想(北京)有限公司 | Electronic equipment and control method |
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Address after: 3 / F, building 19, building 8, No. 498, GuoShouJing Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai, 201203 Applicant after: Xinpu Technology (Shanghai) Co.,Ltd. Address before: Room 305, 22 Boxia Road, Pudong New Area, Shanghai 201203 Applicant before: Xinpu Technology (Shanghai) Co.,Ltd. |
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Application publication date: 20200630 |