CN211046927U - Communication radio frequency circuit, mobile terminal and node equipment - Google Patents
Communication radio frequency circuit, mobile terminal and node equipment Download PDFInfo
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- CN211046927U CN211046927U CN202020149268.2U CN202020149268U CN211046927U CN 211046927 U CN211046927 U CN 211046927U CN 202020149268 U CN202020149268 U CN 202020149268U CN 211046927 U CN211046927 U CN 211046927U
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- 238000004891 communication Methods 0.000 title claims abstract description 27
- 230000003321 amplification Effects 0.000 claims abstract description 19
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 19
- 239000003990 capacitor Substances 0.000 claims description 83
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a communication radio frequency circuit, mobile terminal and node equipment, include: the antenna comprises a power amplification circuit, a first matching circuit, a second matching circuit, an antenna change-over switch and a third matching circuit. The advantages are that: the communication radio frequency circuit enables the power amplification circuit to achieve higher utilization rate through good impedance matching, the energy of the antenna is radiated well, and the normal work of the power amplification circuit is guaranteed.
Description
Technical Field
The utility model relates to a wireless communication technology field especially relates to a communication radio frequency circuit, mobile terminal and node equipment.
Background
Impedance matching is a common operating condition in radio technology that reflects the power transfer relationship between the input and output circuits. When the circuit achieves impedance matching, maximum power transfer will be achieved. Conversely, when the circuit impedance is mismatched, not only is maximum power transfer not available, but damage may also occur to the circuit. The input and output impedances of the wireless transceiver should be consistent with the impedance of the transmission line and the antenna. If the impedance values are inconsistent, the high-frequency energy output by the transceiver is greatly consumed in the transmission loop, and can not be transmitted by the transmission line until the antenna emits the high-frequency energy. The energy which is not emitted is reflected back to generate standing waves, and the insulating layer of the feeder line and the final power amplifier tube of the transceiver are damaged in serious cases. In order for the signal and energy to be efficiently transferred, it is necessary to operate the circuit in an impedance-matched state, i.e., the internal impedance of the signal source or power source is equal to the input impedance of the circuit and the output impedance of the circuit is equal to the impedance of the load.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model provides a communication radio frequency circuit, mobile terminal and node equipment can realize good impedance match, makes power amplifier circuit reach higher utilization ratio, and the energy of antenna radiates away better, has avoided damaging power amplifier circuit.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
in a first aspect, the present invention provides a communication rf circuit, including:
a power amplification circuit: the linear amplification device is used for linearly amplifying the radio frequency signal;
a first matching circuit: the impedance matching circuit is used for performing impedance matching on the input end of the power amplifying circuit;
a second matching circuit: the impedance matching circuit is used for performing impedance matching on the output end of the power amplifying circuit;
an antenna changeover switch: switching control for a reception mode and a transmission mode;
a third matching circuit: the antenna is used for impedance matching of the antenna;
the first matching circuit and the power amplifying circuit are connected with each other through a first capacitor (C1), the power amplifying circuit is directly and electrically connected with a second matching circuit, the second matching circuit and the antenna change-over switch are connected with each other through a fourth capacitor (C4), and the antenna change-over switch and the third matching circuit are connected with each other through a fifth capacitor (C5).
Preferably, the first matching circuit is a PI type resistance matching circuit, and includes a first resistor (R1), a second resistor (R2), and a third resistor (R3), where one end of the first resistor (R1) is grounded, the other end is electrically connected to the input port and the second resistor (R2), one end of the third resistor (R3) is grounded, and the other end is electrically connected to the second resistor (R2) and the first capacitor (C1).
Preferably, the second matching circuit is a PI type L C matching circuit and includes a second capacitor (C2), a first inductor (L1), and a third capacitor (C3), one end of the second capacitor (C2) is grounded, the other end of the second capacitor is electrically connected to the first inductor (L1) and the power amplification circuit, one end of the third capacitor (C3) is grounded, and the other end of the third capacitor is electrically connected to the first inductor (L1) and the fourth capacitor (C4).
Preferably, the third matching circuit comprises a first PI L C matching circuit, a second PI L C matching circuit.
Preferably, the first PI L C matching circuit includes a sixth capacitor (C6), a seventh capacitor (C7), a second inductor (L2), and an eighth capacitor (C8), one end of the sixth capacitor (C6) is grounded, the other end of the sixth capacitor is electrically connected to the fifth capacitor (C5), the seventh capacitor (C7), and the second inductor (L2), one end of the eighth capacitor (C8) is grounded, and the other end of the eighth capacitor is electrically connected to the seventh capacitor (C7), the second inductor (L2), and the second PI L C matching circuit.
Preferably, the second PI L C matching circuit includes a ninth capacitor (C9), a tenth capacitor (C10), a third inductor (L3), and an eleventh capacitor (C11), the ninth capacitor (C9) has one end grounded, the other end electrically connected to the tenth capacitor (C10), the third inductor (L3), and the first PI L C matching circuit, the eleventh capacitor (C11) has one end grounded, and the other end electrically connected to the tenth capacitor (C10), the third inductor (L3), and the antenna port.
Preferably, the antenna changeover switch is RFSW 8000.
Preferably, the power amplification circuit is RF 5110G.
In a second aspect, the present invention provides a mobile terminal, including the first aspect the communication radio frequency circuit.
In a third aspect, the present invention provides a node device, comprising the communication radio frequency circuit of the first aspect.
Has the advantages that: the utility model discloses a communication radio frequency circuit, mobile terminal and node equipment through good impedance match, make power amplification circuit reach higher utilization ratio, and the energy of antenna radiates away better, has guaranteed power amplification circuit's normal work.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and the embodiments in the drawings do not constitute any limitation to the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of the communication rf circuit of the present invention.
Fig. 2 is a specific circuit diagram of the communication rf circuit according to the embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and embodiments, which are preferred embodiments of the present invention. It is to be understood that the described embodiments are merely a subset of the embodiments of the invention, and not all embodiments; it should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
An embodiment of the present invention provides a communication rf circuit, as shown in fig. 1 and 2, specifically including: the antenna comprises a power amplification circuit RF5110G for linearly amplifying a radio frequency signal, a first matching circuit and a second matching circuit for impedance matching of the input end and the output end of the power amplification circuit RF5110G, an antenna changeover switch RFSW8000 for changeover control of a receiving mode and a transmitting mode, and a third matching circuit for impedance matching of an antenna. The first matching circuit and the power amplifying circuit RF5110G are connected with each other through a first capacitor (C1), the power amplifying circuit is directly and electrically connected with the second matching circuit, the second matching circuit and the antenna change-over switch RFSW8000 are connected with each other through a fourth capacitor (C4), and the antenna change-over switch RFSW8000 and the third matching circuit are connected with each other through a fifth capacitor (C5).
A first matching circuit: the first matching circuit is a PI type resistance matching circuit and comprises a first resistor (R1), a second resistor (R2) and a third resistor (R3), one end of the first resistor (R1) is grounded, the other end of the first resistor (R1) is electrically connected with the input port and the second resistor (R2), one end of the third resistor (R3) is grounded, and the other end of the third resistor (R3) is electrically connected with the second resistor (R2) and the first capacitor (C1).
The second matching circuit is used for performing impedance matching on the output end of the power amplification circuit RF5110G, the second matching circuit is a PI type L C matching circuit and comprises a second capacitor (C2), a first inductor (L1) and a third capacitor (C3), one end of the second capacitor (C2) is grounded, the other end of the second capacitor is electrically connected with the first inductor (L1) and the power amplification circuit, one end of the third capacitor (C3) is grounded, and the other end of the third capacitor is electrically connected with the first inductor (L1) and a fourth capacitor (C4).
The third matching circuit is used for impedance matching of the antenna and comprises a first PI type L C matching circuit and a second PI type L C matching circuit, wherein the first PI type 460C matching circuit comprises a sixth capacitor (C6), a seventh capacitor (C7), a second inductor (L) and an eighth capacitor (C8), one end of the sixth capacitor (C6) is grounded, the other end of the sixth capacitor is electrically connected with a fifth capacitor (C5), a seventh capacitor (C7) and a second inductor (L), one end of the eighth capacitor (C8) is grounded, the other end of the eighth capacitor (C7), the second inductor (L2) and the second PI type L C matching circuit is electrically connected, the second PI type L C matching circuit comprises a ninth capacitor (C7), a tenth capacitor (C3687458), a third inductor (L) and an eleventh capacitor (C L), the other end of the first PI type 460C matching circuit is grounded, the ninth capacitor (C L) is electrically connected with the third capacitor (C L), the tenth capacitor (C L) and the tenth inductor (C L) and the other end of the third capacitor (C L) and the tenth capacitor (L) are electrically connected with the third inductor L) and the third inductor L, the tenth capacitor (C L) and the third inductor L, the fifth capacitor (L) and the fifth capacitor (.
The utility model discloses a communication radio frequency circuit theory of operation: when the enable end EN1 of the antenna change-over switch RFSW8000 is at a high level and the EN2 is at a low level, the antenna change-over switch RFSW8000 and the power amplifying circuit RF5110G are both in a transmitting working state, the first matching circuit and the second matching circuit perform impedance matching on the input end and the output end of the power amplifying circuit RF5110G, so that a radio frequency signal from an excitation stage is optimally linearly amplified by the power amplifying circuit RF5110G and then transmits radio frequency to a free space through a matching excitation antenna of a third matching circuit performing impedance matching on the antenna; when the enable terminal EN1 of the antenna changeover switch RFSW8000 is at a low level and EN2 is at a high level, the antenna changeover switch RFSW8000 is in a receiving working state, at this time, the power amplification circuit RF5110G is in a sleep-off state, and a weak induction signal from an antenna enters the antenna changeover switch RFSW8000 through a third matching circuit for impedance matching of the antenna to a receiving link for bottom noise signal amplification processing.
An embodiment of the utility model provides a mobile terminal, including above-mentioned communication radio frequency circuit.
An embodiment of the utility model provides a node equipment, including above-mentioned communication radio frequency circuit.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A communication radio frequency circuit, comprising:
a power amplification circuit: the linear amplification device is used for linearly amplifying the radio frequency signal;
a first matching circuit: the impedance matching circuit is used for performing impedance matching on the input end of the power amplifying circuit;
a second matching circuit: the impedance matching circuit is used for performing impedance matching on the output end of the power amplifying circuit;
an antenna changeover switch: switching control for a reception mode and a transmission mode;
a third matching circuit: the antenna is used for impedance matching of the antenna;
the first matching circuit and the power amplifying circuit are connected with each other through a first capacitor (C1), the power amplifying circuit is directly and electrically connected with a second matching circuit, the second matching circuit and the antenna change-over switch are connected with each other through a fourth capacitor (C4), and the antenna change-over switch and the third matching circuit are connected with each other through a fifth capacitor (C5).
2. The communication radio frequency circuit according to claim 1, wherein the first matching circuit is a PI type resistor matching circuit, and comprises a first resistor (R1), a second resistor (R2), and a third resistor (R3), wherein the first resistor (R1) is grounded at one end, and the other end is electrically connected to the input port and the second resistor (R2), and the third resistor (R3) is grounded at one end, and the other end is electrically connected to the second resistor (R2) and the first capacitor (C1).
3. The communication radio frequency circuit of claim 1, wherein the second matching circuit is a PI type L C matching circuit, and comprises a second capacitor (C2), a first inductor (L1), and a third capacitor (C3), wherein the second capacitor (C2) is grounded at one end, and the other end is electrically connected to the first inductor (L1) and the power amplification circuit, and the third capacitor (C3) is grounded at one end, and the other end is electrically connected to the first inductor (L1) and the fourth capacitor (C4).
4. The communication radio frequency circuit of claim 1, wherein the third matching circuit comprises a first PI L C matching circuit, a second PI L C matching circuit.
5. The communication RF circuit of claim 4, wherein the first PI type L C matching circuit comprises a sixth capacitor (C6), a seventh capacitor (C7), a second inductor (L2), and an eighth capacitor (C8), wherein the sixth capacitor (C6) is grounded at one end, and is electrically connected to the fifth capacitor (C5), the seventh capacitor (C7), and the second inductor (L2), and the eighth capacitor (C8) is grounded at one end, and is electrically connected to the seventh capacitor (C7), the second inductor (L2), and the second PI type L C matching circuit at the other end.
6. The communication RF circuit according to claim 4, wherein the second PI type L C matching circuit comprises a ninth capacitor (C9), a tenth capacitor (C10), a third inductor (L3), and an eleventh capacitor (C11), wherein the ninth capacitor (C9) has one end connected to ground and the other end electrically connected to the tenth capacitor (C10), the third inductor (L3) and the first PI type L C matching circuit, and the eleventh capacitor (C11) has one end connected to ground and the other end electrically connected to the tenth capacitor (C10), the third inductor (L3) and the antenna port.
7. The communication radio frequency circuit according to any of claims 1 to 6, wherein the duplexer is RFSW 8000.
8. The communication radio frequency circuit of claim 7, wherein the power amplification circuit is RF 5110G.
9. A mobile terminal characterized by comprising the communication radio frequency circuit of any one of claims 1-8.
10. A node device comprising the communication radio frequency circuit of any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020149268.2U CN211046927U (en) | 2020-02-02 | 2020-02-02 | Communication radio frequency circuit, mobile terminal and node equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020149268.2U CN211046927U (en) | 2020-02-02 | 2020-02-02 | Communication radio frequency circuit, mobile terminal and node equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211046927U true CN211046927U (en) | 2020-07-17 |
Family
ID=71539758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020149268.2U Active CN211046927U (en) | 2020-02-02 | 2020-02-02 | Communication radio frequency circuit, mobile terminal and node equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211046927U (en) |
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2020
- 2020-02-02 CN CN202020149268.2U patent/CN211046927U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Communication RF circuit, mobile terminal and node equipment Effective date of registration: 20221012 Granted publication date: 20200717 Pledgee: Rizhao Lanshan Rural Commercial Bank Co.,Ltd. airport sub branch Pledgor: Shandong dawn shines Information Technology Co.,Ltd. Registration number: Y2022980018102 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CP03 | Change of name, title or address |
Address after: 14th Floor, Building 3, Gaoxin Smart Valley, No. 237 Xueyuan Road, Gaoxin District, Rizhao City, Shandong Province, 276800 Patentee after: Shandong Shuguangzhao Information Technology Co.,Ltd. Address before: 276800 6th floor, building Al, cultural and creative park, high tech Zone, Rizhao City, Shandong Province Patentee before: Shandong dawn shines Information Technology Co.,Ltd. |
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| CP03 | Change of name, title or address |