CN214412729U - Global short message communication module based on Beidou third-generation system - Google Patents
Global short message communication module based on Beidou third-generation system Download PDFInfo
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Abstract
The utility model provides a short message communication module of global based on big dipper No. three system, including radio frequency front end circuit, the radio frequency chip, the baseband chip, interface circuit and power supply circuit, radio frequency front end circuit is used for with antenna connection, including receiving radio frequency front end circuit and transmission radio frequency front end circuit, be used for receiving and transmitting signal's amplified filtering, the radio frequency chip is the upper and lower frequency conversion that is used for receiving and transmitting signal handles, the baseband chip is to intermediate frequency signal processing and accomplish the signal analysis, power supply circuit is for each chip and functional area power supply, interface circuit provides and the module interactive input and output for the user. The utility model is suitable for a No. three systems of big dipper and can compatible big dipper No. two systems, can support the regional short message communication of big dipper No. two systems and location, the regional short message communication of big dipper No. three systems and global range and the communication of a plurality of frequency points of location, L transmission frequency point to send. The stamp hole connection mode is adopted, and the stamp hole connection device is applied to various devices such as vehicles, ships, handholds and the like.
Description
Technical Field
The utility model relates to a satellite communication module especially relates to a global short message communication module based on No. three systems of big dipper.
Background
At present, the Beidou system is more and more widely and deeply applied to various industries, and in a plurality of industries such as traffic, electric power, agriculture, fishery and the like, the RNSS positioning of the Beidou can provide services such as position positioning, time service and the like, and besides, the short message communication function based on the RDSS of the Beidou system also plays an important role in the fields, such as the application of emergency rescue, position tracking, information interaction and the like. However, the implementation of these functions requires a complete set of RDSS communication links, which can be built as discrete components or implemented as separate communication modules.
The existing module capable of realizing the RDSS short message communication function of the Beidou system is only provided by domestic manufacturers, and foreign manufacturers do not have the module. The main type of the domestic current short message communication module is an RDSS short message communication function based on a Beidou No. two system, and the short message communication module is characterized in that the Beidou No. three system is not supported, the global short message function is not supported, the short message communication module is only suitable for a Asia-Pacific region, multi-frequency point communication is not supported, the emergency rescue function is not supported, only text information receiving and sending are supported, and voice and image information receiving and sending are not supported. And the transmitting power of the module is single, generally 5W or 10W specification, and 3W power communication specification which can not adapt to the third requirement of the Beidou is not available.
In view of the above, a global short message communication module based on the beidou three systems is needed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a short message communication module of whole world based on No. three systems of big dipper for solve current equipment and do not possess the regional and short message communication function of whole world of No. three systems of big dipper, and can compatible big dipper No. two systems's short message communication function.
In order to realize the above-mentioned purpose, the utility model provides a short message communication module of whole world based on No. three systems of big dipper, include: the radio frequency front-end circuit is used for being connected with an antenna and comprises a receiving radio frequency front-end circuit and a transmitting radio frequency front-end circuit; the receiving radio frequency front-end circuit comprises an amplitude limiter circuit, a first low-noise amplifier circuit, a first filter circuit, a power divider circuit, a second low-noise amplifier circuit, a second filter circuit, a third low-noise amplifier circuit and a third filter circuit which are sequentially connected from the direction of a signal receiving input end; signals of a 2491M frequency point and a 1207M frequency point received by the antenna from the Beidou third system are transmitted to the amplitude limiter circuit through the signal receiving input end, attenuating a possibly existing large signal through an amplitude limiter circuit, protecting a rear-stage circuit from being safe, transmitting the signal to a first low-noise amplifier circuit for signal amplification, transmitting the amplified signal to a first filter circuit for filtering, inputting the signal to a power divider circuit for frequency point signal sorting of signals of the 2491M frequency point and the 1207M frequency point, transmitting the sorted 2491M frequency point signal to a second low-noise amplifier circuit for signal amplification, filtering the signal by the second filter circuit, inputting the signal to a radio frequency chip, transmitting the sorted 1207M frequency point signal to a third low-noise amplifier circuit for signal amplification, filtering the signal by a third filter circuit, and inputting the signal to the radio frequency chip;
the transmitting radio frequency front-end circuit comprises an attenuator circuit, a fourth filter circuit, a fourth low-noise amplifier circuit and a power amplifier which are sequentially and electrically connected from the radio frequency chip to the signal output end; the transmission signal output by the radio frequency chip is output to the attenuator circuit, is attenuated by the attenuator circuit, is filtered by a fourth filter circuit, enters a fourth low-noise amplifier circuit to be amplified, is transmitted to the power amplifier, is amplified by the power amplifier and is output to the signal output end, and is transmitted by the signal output end;
the radio frequency chip is connected with the receiving radio frequency front-end circuit, the transmitting radio frequency front-end circuit and the baseband chip, and respectively carries out down-conversion processing on signals of a 2491M frequency point and a 1207M frequency point input by the receiving radio frequency front-end circuit and then transmits the signals to the baseband chip, receives transmitting signals transmitted by the baseband chip, carries out up-conversion processing on the transmitting signals and then outputs the signals to the transmitting radio frequency front-end circuit;
the baseband chip comprises an intermediate frequency AD conversion module, a message analysis module, an interface control module and a time service output module, wherein the AD conversion module carries out AD conversion on signals transmitted by the radio frequency chip and then transmits the signals to the message analysis module for communication message analysis, and the interface control module is connected with the interface circuit and carries out input and output of information; the time service output module converts the received time service information into a pulse per second signal through the baseband chip and outputs the pulse per second signal.
The interface circuit is connected with the interface control module of the baseband chip and external equipment through an access port, and the input and output of information are completed through an interface information exchange protocol.
Preferably, the radio frequency chip is integrated with a receiver chain and a transmitter chain, the receiver chain comprises a low noise amplifier, a down conversion mixer, a filter, a programmable amplifier, an analog-to-digital converter and a phase-locked loop, and the transmitter chain comprises a filter, an up conversion mixer and a power preamplifier.
Preferably, the radio frequency chip supports signal receiving and transmitting of frequency points including 1207MHz and 2491MHz frequency points of the beidou three-number system and 1615 MHz-1673 MHz frequency points of the L transmitting frequency point.
Preferably, the baseband chip supports Beidou third RNSS global frequency point, Beidou third RDSS communication area and global frequency point information receiving and sending processing.
Preferably, the signal gain output requirement of the power amplifier is 8-15 dBm.
Preferably, the device further comprises a bias configuration circuit arranged between the radio frequency chip and the baseband chip, and analog intermediate frequency differential signals of the 1207MHz and 2491MHz frequency points output by the radio frequency chip are input to analog intermediate frequency input interfaces of the 1207MHz and 2491MHz frequency points corresponding to the baseband chip through the bias configuration circuit.
Preferably, the radio frequency chip also receives time service information transmitted by the satellite-borne atomic clock and transmits the time service information to the baseband chip.
Preferably, the short message communication module of the beidou three-number system further comprises a power supply circuit, and the power supply circuit is electrically connected with the radio frequency front-end circuit, the radio frequency chip, the baseband chip and the interface circuit respectively to complete power supply of each region of the short message communication module of the beidou three-number system.
Preferably, the connection mode of the short message communication module based on the Beidou third system and other equipment is a stamp hole connection mode.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses based on No. three systems of big dipper can realize regional and global short message communication function, be applicable to No. three systems of big dipper completely and can compatible big dipper No. two systems, can support the regional short message communication of No. two systems of big dipper and fix a position, support the short message communication and the location of No. three systems of big dipper regional and global range, support the communication of a plurality of frequency points of L transmission frequency point to send, still support pronunciation and image information's receiving and dispatching under No. three systems of big dipper simultaneously. The utility model relates to an adopt stamp jogged joint mode, it is convenient reliable to install, and the structure is small and exquisite, and the size of module is wide 45mm, long 50mm, high 3.5mm, but wide application in multiple equipment such as on-vehicle, on-ship, handheld.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of a circuit connection of a global short message communication module based on a beidou No. three system according to an embodiment of the present invention;
FIG. 2 is a block diagram of a global short message communication module based on the Beidou third system according to the embodiment of the present invention;
fig. 3 is a block diagram of a receiver link module according to an embodiment of the present invention;
fig. 4 is a block diagram of a transmitter chain according to an embodiment of the present invention;
the reference numbers illustrate:
1-amplitude limiter circuit, 2-first low noise amplifier circuit, 3-first filter circuit, 4-power divider circuit, 5-second low noise amplifier circuit, 7-second filter circuit, 6-third low noise amplifier circuit, 8-third filter circuit, 9-power amplifier, 10-fourth low noise amplifier circuit, 11-fourth filter circuit, 12-attenuator circuit, 13-radio frequency chip, 14-bias configuration circuit, 15-baseband chip, 16-radio frequency front end circuit, 17-interface circuit, 18-power supply circuit, 20-antenna, 131-receiver link, 132-transmitter link, 151-AD conversion module, 152-text analysis module, 153-interface control module, 154-time service output module, 161-receiving radio frequency front-end circuit, 162-transmitting radio frequency front-end circuit, 21-low noise amplifier, 22-down conversion mixer, 23-receiver chain filter, 24-programmable amplifier, 25-analog-to-digital converter, 26-phase locked loop, 27-transmitter chain filter, 28-up conversion mixer and 29-power preamplifier.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Referring to fig. 1-4, the utility model provides a global short message communication module based on No. three systems of big dipper, include: the radio frequency front-end circuit 16 is used for being connected with an antenna 20 and comprises a receiving radio frequency front-end circuit 161 and a transmitting radio frequency front-end circuit 162; the receiving rf front-end circuit 161 includes a limiter circuit 1, a first low-noise amplifier circuit 2, a first filter circuit 3, a power divider circuit 4, a second low-noise amplifier circuit 5, a second filter circuit 7, a third low-noise amplifier circuit 6, and a third filter circuit 8, which are sequentially connected from the direction of a signal receiving input end; signals of a 2491M frequency point and a 1207M frequency point received by an antenna 20 from a Beidou third system are transmitted to an amplitude limiter circuit 1 through a signal receiving input end, large signals which possibly exist are attenuated through the amplitude limiter circuit 1, a rear-stage circuit is protected to be safe and then transmitted to a first low-noise amplifier circuit 2 for signal amplification, the amplified signals are transmitted to a first filter circuit 3 for filtering and then input to a power divider circuit 4 for frequency point signal sorting of the signals of the 2491M frequency point and the 1207M frequency point, the sorted 2491M frequency point signals are transmitted to a second low-noise amplifier circuit 5 for signal amplification and are input to a radio frequency chip 13 after being filtered by a second filter circuit 7, and the sorted 1207M frequency point signals are transmitted to a third low-noise amplifier circuit 6 for signal amplification and are input to the radio frequency chip 13 after being filtered by a third filter circuit 8. The signal enters from the signal receiving input end in the receiving radio frequency front-end circuit 16 and passes through the amplitude limiter circuit 1, the input of a large signal is attenuated through the amplitude limiter circuit 1, the large signal energy damage to a filter and a low noise amplifier can be reduced, then the signal reaches the first low noise amplifier circuit 2, the Beidou signal is amplified, the amplification factor of the stage is about 18dB, then the signal reaches the power divider 4, the input signal is divided into two by the power divider 4, one path is a 2491M frequency point, and the other path is a 1207M frequency point. 2491M frequency point signals reach the second low noise amplifier circuit 5, the amplification factor of the second low noise amplifier circuit 5 of this stage is about 18dB, the amplified signals reach the second filter circuit 7, and finally enter a 2491M radio frequency input port of the radio frequency chip 13, so that the amplification and filtering processing of the front end of the signals is completed. The 1207M frequency point signal reaches the third filter circuit 6, reaches the third filter circuit 8 after being amplified by the third filter circuit 6, and finally enters the 1207M radio frequency input port of the radio frequency chip 13, so that the amplification and filtering processing of the front end of the signal is completed.
The transmission rf front-end circuit 162 includes an attenuator circuit 12, a fourth filter circuit 11, a fourth low-noise amplifier circuit 10, and a power amplifier 9, which are electrically connected in sequence from the connection of the rf chip 13 toward the signal output end; the transmission signal output by the radio frequency chip 13 is output to the attenuator circuit 12, the transmission signal is attenuated, then filtered by the fourth filter circuit 11, enters the fourth low noise amplifier circuit 10 for signal amplification, and then is transmitted to the power amplifier 9, the power amplifier 9 amplifies the power of the output transmission signal, and then the output transmission signal is output to the signal output end, and the signal is transmitted by the signal output end. In the transmitting rf front-end circuit 162, the output amplitude of the signal from the rf chip is about 0dBm, the signal passes through a 3dB attenuator and then enters the fourth filter circuit 11, the out-of-band interference is filtered, the signal then reaches the fourth low noise amplifier circuit 10, the gain of the fourth low noise amplifier circuit 10 is about 18dB, and the signal then reaches the antenna 20 after being amplified by the power amplifier of the fourth low noise amplifier circuit 10. The input of the power amplifier 9 is required to be 8-15 dBm, so the amplitude of the signal from the rf chip to the fourth lna circuit 10 at the front end of the power amplifier 9 should be about 10 dBm. If the signal does not meet the signal amplitude requirement can be met by adjusting the size of the attenuator circuit 12.
The radio frequency chip 13 is connected with the receiving radio frequency front-end circuit 161, the transmitting radio frequency front-end circuit 162 and the baseband chip 15, and the radio frequency chip 13 transmits signals of a 2491M frequency point and a 1207M frequency point input by the receiving radio frequency front-end circuit 161 to the baseband chip 15 after down-conversion processing respectively, and outputs the signals to the transmitting radio frequency front-end circuit 162 after up-conversion processing of transmitting signals transmitted by the baseband chip 15. The radio frequency chip respectively carries out down-conversion processing on signals of the 2491M frequency point and the 1207M frequency point and then changes the signals into intermediate frequency signals, and then the intermediate frequency signals of the 2491M frequency point and the 1207M frequency point are transmitted to the baseband chip 15.
The baseband chip 15 includes an intermediate frequency AD conversion module 151, a text analysis module 152, an interface control module 153, and a time service output module 154, the AD conversion module 151 performs AD conversion on the signal transmitted by the radio frequency chip 13 and then transmits the signal to the text analysis module 152 for communication text analysis, and the interface control module 153 is connected to the interface circuit 17 for information input and output; the time service output module 154 converts the received time service information into a pulse per second signal through the baseband chip 15 and outputs the pulse per second signal. 2491MHz and 1207MHz intermediate frequency input interfaces corresponding to the baseband chip 15 receive the signals transmitted by the rf chip 13, perform analog-to-digital signal conversion, and then perform signal analysis by the text analysis module 152. The analyzed message is output to the user through the interface control module 153.
The interface circuit 17 is connected to the interface control module 153 of the baseband chip 15 and an external device through an access port, and completes input and output of information through an interface information exchange protocol. The interface circuit mainly realizes information interaction between a user and the module.
It should be understood by those skilled in the art that circuit elements designed in the short message communication module based on the beidou No. three system in the present embodiment may be designed and selected by those skilled in the art according to needs, and will not be described herein in detail.
The technical scheme of the utility model in, based on the global short message communication module of big dipper No. three systems mainly comprises four high performance districts of radio frequency front-end circuit 16, radio frequency chip 13, baseband chip 15, interface circuit 17. The rf front-end circuit 16 is used for receiving and transmitting signals, and includes a receiving rf front-end circuit 161 and a transmitting rf front-end circuit 162, where the receiving rf front-end circuit 161 is used for receiving signals of two frequency points, 2491M and 1207M, of the beidou three systems from a signal receiving input end, and performing amplification and filtering on the signals, the transmitting rf front-end circuit 162 is used for transmitting an L-frequency point signal output by the rf chip 13, and the whole transmitting rf front-end circuit 162 is set for ensuring stability and abundance of transmission power. The radio frequency chip 13 is used for up-down frequency conversion processing of signals, down-conversion processing is carried out on signals of 2491M and 1207M frequency points transmitted by the radio frequency front end circuit 16, the signals are changed into intermediate frequency signals, the baseband chip 15 is used for processing the intermediate frequency signals transmitted by the radio frequency chip 13 and completing signal analysis, and the interface circuit 17 is used for providing an information input and output port for interaction with a global short message communication module of the Beidou third-generation system for a user. The utility model discloses a each functional area respectively takes charge of its own job and accomplishes the signal and enlargies to the up-down frequency conversion from the receiving terminal and arrives the analytic processing of signal again, finally forms communication process. The utility model discloses global short message communication module's based on No. three systems of big dipper size is wide 45mm, long 50mm, high 3.5mm, and the structure is small and exquisite, but wide application in multiple equipment such as on-vehicle, shipborne, handheld.
Wherein the radio frequency chip 13 is integrated with a receiver chain 131 and a transmitter chain 132, the receiver chain 131 comprises a low noise amplifier 21, a down conversion mixer 22, a receiver chain filter 23, a programmable amplifier 24, an analog-to-digital converter 25 and a phase locked loop 26, and the transmitter chain 132 comprises a transmitter chain filter 27, an up conversion mixer 28 and a power pre-amplifier 29. The receiver chain 131 mainly functions to receive and down-convert signals, the programmable amplifier 24 amplifies the signals, the amplification factor of the programmable amplifier can be controlled by a program according to needs, the analog-to-digital converter 25 converts the signals and transmits the converted signals to the baseband chip 15, and the phase-locked loop 26 is used for locking the local oscillation frequency of the receiving and transmitting channel of the 10M crystal oscillator and providing a 62M sampling clock signal to the baseband chip 15. The transmitter chain 132 is used for up-converting the transmitted signal and amplifying the output power of the signal by the power pre-amplifier 27 to transmit to the transmitting rf front-end circuit 162.
The radio frequency chip 13 supports signal receiving and transmitting of frequency points including 1207MHz and 2491MHz frequency points of a Beidou third system and 1615 MHz-1673 MHz frequency points of an L transmitting frequency point. The utility model discloses a radio frequency chip 13 is the radio frequency core that a section supports three numbers of big dipper and global navigation satellite system and the short message system of big dipper, and the frequency point covers the required 1207MHz of three number system RDSS of big dipper, 2491MHz and L transmission frequency point 1615 ~ 1673 MHz.
The baseband chip 15 supports the Beidou third RNSS global frequency point, supports the Beidou third RDSS communication area and receives and sends information of the global frequency point. The Beidou second system can be completely compatible, and regional short message communication and positioning of the Beidou second system are supported.
The signal gain output requirement of the power amplifier 9 is 8-15 dBm. The power amplifier 9 is part of the transmit rf front-end circuit 162, and the power amplifier 9 is used for power amplifying the transmit signal to meet the transmit power requirement. In this case, the power amplifier satisfies 8-15 dBm.
The device also comprises a bias configuration circuit 14 arranged between the radio frequency chip 13 and the baseband chip 15, wherein analog intermediate frequency differential signals of 1207MHz and 2491MHz frequency points output by the radio frequency chip 13 are input to analog intermediate frequency input interfaces of 1207MHz and 2491MHz frequency points corresponding to the baseband chip through the bias configuration circuit 14. The bias configuration circuit 14 is a key interface for signal connection between the baseband chip 15 and the rf chip 13, and is a basic circuit for ensuring effective signal transmission and providing accurate final signal analysis.
The radio frequency chip 13 also receives the time service information transmitted by the satellite-borne atomic clock and transmits the time service information to the baseband chip 15. The satellite-borne atomic clock is one of the most key components of the Beidou navigation satellite, provides a time frequency signal with a high stability level for a satellite system, and determines the positioning, speed measurement and time service precision of the navigation system. The baseband chip 15 converts the received time service information into a pulse per second signal and transmits the pulse per second signal to the user for use.
The short message communication module of the Beidou third system further comprises a power circuit 18, wherein the power circuit 18 is electrically connected with the radio frequency front-end circuit 16, the radio frequency chip 13, the baseband chip 15 and the interface circuit 17 respectively, and power supply of each area of the short message communication module of the Beidou third system is completed. The utility model discloses a short message communication module of big dipper No. three system can use with other equipment combinations, can be its input electric quantity by other equipment.
The short message communication module based on the Beidou I system is connected with other equipment in a stamp hole connection mode. The stamp hole connection is a common connection in chip modules.
Note that the above is only a preferred embodiment of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (9)
1. The utility model provides a global short message communication module based on big dipper No. three system which characterized in that includes: the radio frequency front-end circuit, the radio frequency chip, the baseband chip and the interface circuit; wherein,
the radio frequency front-end circuit is used for being connected with an antenna and comprises a receiving radio frequency front-end circuit and a transmitting radio frequency front-end circuit; the receiving radio frequency front-end circuit comprises an amplitude limiter circuit, a first low-noise amplifier circuit, a first filter circuit, a power divider circuit, a second low-noise amplifier circuit, a second filter circuit, a third low-noise amplifier circuit and a third filter circuit which are sequentially connected from the direction of a signal receiving input end; signals of a 2491M frequency point and a 1207M frequency point received by the antenna from a Beidou third system are transmitted to the amplitude limiter circuit through the signal receiving input end, after the attenuation of a large signal is completed through the amplitude limiter circuit, the large signal is transmitted to the first low-noise amplifier circuit for signal amplification, the amplified signal is transmitted to the first filter circuit for filtering and then is input to the power divider circuit for carrying out frequency point signal sorting on the signals of the 2491M frequency point and the 1207M frequency point, the sorted 2491M frequency point signal is transmitted to the second low-noise amplifier circuit for signal amplification and is input to the radio frequency chip after being filtered by the second filter circuit, and the sorted 1207M frequency point signal is transmitted to the third low-noise amplifier circuit for signal amplification and is input to the radio frequency chip after being filtered by the third filter circuit;
the transmitting radio frequency front-end circuit comprises an attenuator circuit, a fourth filter circuit, a fourth low-noise amplifier circuit and a power amplifier which are sequentially and electrically connected from the radio frequency chip to the signal output end; the transmission signal output by the radio frequency chip is output to the attenuator circuit, attenuated by the attenuator circuit, filtered by a fourth filter circuit, enters a fourth low-noise amplifier circuit for signal amplification, and is then transmitted to the power amplifier, the power amplifier amplifies the power of the output transmission signal, outputs the amplified transmission signal to the signal output end, and the signal output end transmits the signal;
the radio frequency chip is connected with the receiving radio frequency front-end circuit, the transmitting radio frequency front-end circuit and the baseband chip, and is used for respectively carrying out down-conversion processing on signals of a 2491M frequency point and a 1207M frequency point input by the receiving radio frequency front-end circuit and then transmitting the signals to the baseband chip, receiving transmitting signals transmitted by the baseband chip, carrying out up-conversion processing on the signals and then outputting the signals to the transmitting radio frequency front-end circuit;
the baseband chip comprises an intermediate frequency AD conversion module, a message analysis module, an interface control module and a time service output module, wherein the AD conversion module carries out AD conversion on signals transmitted by the radio frequency chip and then transmits the signals to the message analysis module for communication message analysis, and the interface control module is connected with the interface circuit for inputting and outputting information; the time service output module converts the received time service information into a pulse per second signal through the baseband chip and outputs the pulse per second signal;
the interface circuit is connected with the interface control module of the baseband chip and external equipment through an access port, and the input and output of information are completed through an interface information exchange protocol.
2. The Beidou III system-based short message communication module of claim 1, wherein the radio frequency chip is integrated with a receiver chain and a transmitter chain, the receiver chain comprises a low noise amplifier, a down conversion mixer, a filter, a programmable amplifier, an analog-to-digital converter and a phase-locked loop, and the transmitter chain comprises a filter, an up conversion mixer and a power preamplifier.
3. The global short message communication module based on beidou No. three system as claimed in claim 1, wherein the radio frequency chip supports signal reception and transmission of frequency points including 1207MHz and 2491MHz frequency points of beidou No. three system and 1615MHz to 1673MHz frequency points of L transmission frequency points.
4. The global short message communication module based on beidou No. three system as claimed in claim 1, wherein the baseband chip supports beidou No. three RNSS global frequency point, beidou No. three RDSS communication area and global frequency point information receiving and sending processing.
5. The Beidou I-III system-based global short message communication module according to claim 1, wherein the signal gain output requirement of the power amplifier is 8-15 dBm.
6. The global short message communication module based on beidou No. three system of claim 1, further comprising a bias configuration circuit arranged between the radio frequency chip and the baseband chip, wherein analog intermediate frequency differential signals of 1207MHz and 2491MHz frequency points output by the radio frequency chip are input to analog intermediate frequency input interfaces of 1207MHz and 2491MHz frequency points corresponding to the baseband chip through the bias configuration circuit.
7. The global short message communication module based on the beidou three-number system according to claim 1, wherein the radio frequency chip further receives time service information transmitted by a satellite-borne atomic clock and transmits the time service information to the baseband chip.
8. The global short message communication module based on the beidou No. three system as claimed in claim 1, wherein the short message communication module of the beidou No. three system further comprises a power supply circuit, and the power supply circuit is electrically connected with the radio frequency front end circuit, the radio frequency chip, the baseband chip and the interface circuit respectively to complete power supply of each region of the short message communication module of the beidou No. three system.
9. The Beidou third system-based global short message communication module according to claim 1, wherein the Beidou third system-based short message communication module is connected with other equipment in a stamp hole connection mode.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115314068A (en) * | 2022-08-08 | 2022-11-08 | 深圳市远东华强导航定位有限公司 | GNSS and RSMC integrated chip |
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2021
- 2021-02-05 CN CN202120325324.8U patent/CN214412729U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115314068A (en) * | 2022-08-08 | 2022-11-08 | 深圳市远东华强导航定位有限公司 | GNSS and RSMC integrated chip |
| CN115314068B (en) * | 2022-08-08 | 2024-04-23 | 深圳市远东华强导航定位有限公司 | GNSS and RSMC integrated chip |
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