CN213547495U - RF radio frequency antenna all-in-one control circuit - Google Patents
RF radio frequency antenna all-in-one control circuit Download PDFInfo
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- CN213547495U CN213547495U CN202023175622.8U CN202023175622U CN213547495U CN 213547495 U CN213547495 U CN 213547495U CN 202023175622 U CN202023175622 U CN 202023175622U CN 213547495 U CN213547495 U CN 213547495U
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Abstract
The utility model provides a control circuit is unified to RF radio frequency antenna more belongs to communication technology field. The utility model discloses an unify the antenna more, with unify the receiving module that the antenna links to each other more, the frequency division module and the host system that link to each other with receiving module, host system is equipped with first radio frequency signal receiving port and second radio frequency signal receiving port, wherein, frequency division module's first frequency division end links to each other with first radio frequency signal receiving port, frequency division module's second frequency division end links to each other with second radio frequency signal receiving port. The utility model has the advantages that: the production time is shortened, the production cost and the material cost are saved, the signal interference among different antennas is reduced, the use smoothness of the machine is improved, and the reliability of the product is improved.
Description
Technical Field
The utility model relates to a communication circuit especially relates to a control circuit is unified to RF radio frequency antenna more.
Background
In the existing PDA, one board generally needs to receive several kinds of radio frequency signals, so as to meet the related functional requirements of the board, and the common practice is to install a corresponding antenna, for example, to receive a GPS signal, install a GPS antenna, receive a WIFI signal, and install a WIFI antenna, where two antenna signals are respectively input into a main control chip for further processing, as shown in fig. 1. This structure has the following problems:
1. in the production process of a PDA (metering field operation terminal), the space inside the shell is small, two radio frequency antennas, namely a GPS (global positioning system) antenna and a WiFi (wireless fidelity) antenna, need to be installed, and the operation is complex and tedious;
2. in the using process, the two radio frequency antennas interfere with each other, so that the signal intensity of the machine is reduced;
3. the cost of using two radio frequency antenna materials is too high.
Based on these factors, if an all-in-one antenna is used to simultaneously receive and separate the electromagnetic wave signals, the above technical problems can be completely overcome.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model provides a control circuit is unified to RF radio frequency antenna more.
The utility model discloses an all-in-one radio frequency antenna, the receiving module who links to each other with all-in-one radio frequency antenna, the frequency division module and the host system that link to each other with receiving module, frequency division module can with the multiple antenna signal separation that all-in-one radio frequency antenna received to through the frequency division end output of difference, host system is equipped with the radio frequency signal receiving port the same with radio frequency signal quantity, wherein, frequency division module's frequency division end links to each other with the radio frequency signal receiving port that corresponds respectively.
The utility model discloses make further improvement, still including setting up matching module between frequency division module frequency division end and the host system radio frequency signal receiving port.
The utility model discloses make further improvement, receiving module is the matching circuit of all-in-one radio frequency antenna receiving frequency, matching module is the matching circuit who matches corresponding radio frequency signal.
The utility model discloses make further improvement, matching circuit is pi type RC matching circuit.
The utility model discloses make further improvement, frequency division module is for can dividing into the filter circuit of different frequency radio frequency signal with signal all the way.
The utility model discloses make further improvement, the radio frequency antenna of unifying more is two unification radio frequency antennas, frequency division module is for can separating the band pass filter of two way radio frequency signal with radio frequency signal all the way.
The utility model discloses do further improvement, frequency division module includes band pass filter U1, band pass filter U1's pin 1, pin 3 and pin 5 ground connection, pin 2 connect receiving module, and pin 4 is first frequency division end, exports first radio frequency signal, and pin 6 is second frequency division end, exports second radio frequency signal.
The utility model discloses make further improvement, first frequency division end output GPS antenna signal, second frequency division end output network signal.
The utility model discloses make further improvement, the network signal includes the WIFI signal, the WIFI signal includes the wiFi antenna signal of 2.4G frequency channel and/or the wiFi antenna signal of 5G frequency channel.
The utility model discloses make further improvement, filter circuit includes the frequency division branch road the same with radio frequency signal quantity, the input termination receiving circuit of every frequency division branch road, and the radio frequency signal of different frequencies is exported to the output.
Compared with the prior art, the beneficial effects of the utility model are that: due to the fact that the number of the antennas is reduced, production time is shortened, and production cost and material cost are saved in the production process of a PDA (digital personal digital assistant). In the use process, the signal interference among different antennas is reduced, the use smoothness of the machine is improved, the repair rate of products is reduced, the reliability of the products is improved, and the user satisfaction of the products is improved.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the prior art;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a block diagram illustrating an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 2, the utility model discloses an all-in-one radio frequency antenna, the receiving module who links to each other with all-in-one radio frequency antenna, the frequency division module and the host system that link to each other with receiving module, frequency division module can with the multiple antenna signal separation that all-in-one radio frequency antenna received to through the frequency division end output of difference, host system is equipped with the radio frequency signal receiving port the same with radio frequency signal quantity, wherein, frequency division module's frequency division end links to each other with the radio frequency signal receiving port that corresponds respectively. The receiving module is a matching circuit for matching the receiving frequency of the all-in-one radio frequency antenna, and the matching module is a matching circuit for matching corresponding radio frequency signals. The frequency division module is a filter circuit capable of dividing one path of signals into radio frequency signals with different frequencies.
Preferably, the system further comprises a matching module arranged between the frequency dividing end of the frequency dividing module and the radio frequency signal receiving port of the main control module, and the matching module is used for further filtering the frequency-divided signals.
As shown in fig. 3, as an embodiment of the present invention, the all-in-one rf antenna of this embodiment is a two-in-one rf antenna including a GPS antenna and a WIFI antenna, and the frequency division module is a band pass filter capable of separating one path of rf signal into two paths of rf signals.
The frequency division module of this example includes a band-pass filter U1, pin 1, pin 3 and pin 5 of the band-pass filter U1 are grounded, pin 2 is connected to the receiving module, pin 4 is a first frequency division end and outputs a first radio frequency signal, and pin 6 is a second frequency division end and outputs a second radio frequency signal.
The built-in antenna of the embodiment receives electromagnetic wave signals matched with the frequency of the built-in antenna, the electromagnetic wave signals pass through a pi-shaped RC matching circuit of a public receiving end of a band-pass filter U1 and then enter a band-pass filtering frequency division circuit, and the frequency range of the GPS antenna is as follows: 1.57542 +/-1.023 GHz, the band-pass filtering frequency-dividing circuit of the embodiment outputs electromagnetic wave signals of 704-1610MHz from a low-frequency channel port, the low-frequency electromagnetic wave signals output from the band-pass filtering frequency-dividing circuit enter a pi-type RC matching circuit and then enter a GPS signal receiving port of a main control chip to complete signal receiving, and GPS positioning is realized.
Due to the WiFi antenna frequency range of the 2.4G band: 2.420-2.4835GHz, WiFi antenna frequency range in 5G band: 5.725-5.875 GHz. Therefore, the electromagnetic wave signals of 2400-. And high-frequency electromagnetic wave signals output from the band-pass filtering frequency division circuit enter the pi-type RC matching circuit, then the electromagnetic wave signals enter a WiFi signal receiving port of the main control chip to complete signal receiving, and the WIFI wireless internet access function is realized.
In the embodiment, the frequency separation is carried out on the electromagnetic wave signals received by the built-in antenna through the band-pass filtering frequency division circuit, so that the GPS positioning and WIFI wireless internet access functions can be completed by using one RF antenna. In the production process of PDA (metering field operation terminal), the production time is reduced, and the production cost and the material cost are saved. In the use process, the signal interference among different antennas is reduced, the smoothness of the product in use is improved, the repair rate of the product is reduced, the reliability of the product is improved, and the user satisfaction of the product is improved.
Of course, this example may also be compatible with bluetooth wireless signals, Zigbee wireless signals, and the like, and only the output port of the additional filter needs to be configured to pass the corresponding signal frequency.
As another embodiment of the present invention, the filter circuit of this example includes the same number of frequency division branches as the number of radio frequency signals, the input end of each frequency division branch is connected to the receiving circuit, and the output end outputs radio frequency signals with different frequencies. For example, a single low-pass filter circuit may be adopted, and more than one high-pass filter circuit may be arranged through a low-frequency band signal to pass different high-frequency signals.
The above-mentioned embodiments are the preferred embodiments of the present invention, and the scope of the present invention is not limited to the above-mentioned embodiments, and the scope of the present invention includes and is not limited to the above-mentioned embodiments, and all equivalent changes made according to the present invention are within the protection scope of the present invention.
Claims (10)
1. An RF antenna all-in-one control circuit, characterized in that: including the unification radio frequency antenna more, with the receiving module that unification radio frequency antenna links to each other more, frequency division module and the host system that links to each other with receiving module, frequency division module can with the multiple antenna signal separation that unification radio frequency antenna received more to through the frequency division end output of difference, host system is equipped with the same radio frequency signal receiving port with radio frequency signal quantity, wherein, frequency division module's frequency division end links to each other with the radio frequency signal receiving port that corresponds respectively.
2. The RF antenna all-in-one control circuit of claim 1, wherein: the frequency division module also comprises a matching module arranged between the frequency division end of the frequency division module and the radio frequency signal receiving port of the main control module.
3. The RF antenna all-in-one control circuit of claim 2, wherein: the receiving module is a matching circuit for matching the receiving frequency of the all-in-one radio frequency antenna, and the matching module is a matching circuit for matching corresponding radio frequency signals.
4. The RF antenna all-in-one control circuit of claim 3, wherein: the matching circuits are pi-type RC matching circuits.
5. The RF radio frequency antenna all-in-one control circuit according to any one of claims 1 to 4, wherein: the frequency division module is a filter circuit capable of dividing one path of signals into radio frequency signals with different frequencies.
6. The RF antenna all-in-one control circuit of claim 5, wherein: the all-in-one radio frequency antenna is a two-in-one radio frequency antenna, and the frequency division module is a band-pass filter capable of separating one radio frequency signal into two radio frequency signals.
7. The RF antenna all-in-one control circuit of claim 6, wherein: the frequency division module comprises a band-pass filter U1, wherein pin 1, pin 3 and pin 5 of the band-pass filter U1 are grounded, pin 2 is connected with the receiving module, pin 4 is a first frequency division end and outputs a first radio-frequency signal, and pin 6 is a second frequency division end and outputs a second radio-frequency signal.
8. The RF radio frequency antenna all-in-one control circuit according to claim 7, wherein: the first frequency division end outputs a GPS antenna signal, and the second frequency division end outputs a network signal.
9. The RF antenna all-in-one control circuit of claim 8, wherein: the network signals comprise WIFI signals, and the WIFI signals comprise WiFi antenna signals of 2.4G frequency bands and/or WiFi antenna signals of 5G frequency bands.
10. The RF antenna all-in-one control circuit of claim 5, wherein: the filter circuit comprises frequency division branches with the same number as the radio frequency signals, the input end of each frequency division branch is connected with the receiving circuit, and the output end of each frequency division branch outputs the radio frequency signals with different frequencies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023175622.8U CN213547495U (en) | 2020-12-25 | 2020-12-25 | RF radio frequency antenna all-in-one control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023175622.8U CN213547495U (en) | 2020-12-25 | 2020-12-25 | RF radio frequency antenna all-in-one control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN213547495U true CN213547495U (en) | 2021-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023175622.8U Active CN213547495U (en) | 2020-12-25 | 2020-12-25 | RF radio frequency antenna all-in-one control circuit |
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| Country | Link |
|---|---|
| CN (1) | CN213547495U (en) |
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2020
- 2020-12-25 CN CN202023175622.8U patent/CN213547495U/en active Active
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