CN215344561U - Miniaturized satellite communication machine receiving and transmitting integrated radio frequency module structure - Google Patents
Miniaturized satellite communication machine receiving and transmitting integrated radio frequency module structure Download PDFInfo
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- CN215344561U CN215344561U CN202121762540.5U CN202121762540U CN215344561U CN 215344561 U CN215344561 U CN 215344561U CN 202121762540 U CN202121762540 U CN 202121762540U CN 215344561 U CN215344561 U CN 215344561U
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Abstract
The utility model provides a small-sized satellite communication machine transceiving integrated radio frequency module structure, and relates to the technical field of satellite measurement and control. The receiving and transmitting integrated radio frequency module comprises the radio frequency unit and the baseband, wherein the radio frequency unit interfaces are positioned at the physical edge of the module, the physical size of the module can be utilized to the maximum extent while the direct and reliable connection of the radio frequency unit and the baseband is realized, the length of an analog signal input and output connecting line can be ensured to the minimum extent, and the insertion loss is reduced. The structural design is suitable for U/V/L/S frequency bands, and can be applied to frequency bands above an X wave band of a satellite communication machine in an expanded mode by installing the radio frequency units in a positive and negative mode, so that the universality of the module is improved. By the technical scheme, the integration level of the satellite communication machine is improved, and the miniaturization and the generalization design of a satellite integrated electronic system are facilitated to be improved.
Description
Technical Field
The utility model relates to the technical field of satellite measurement and control, in particular to a small satellite communication machine receiving and transmitting integrated radio frequency module structure which comprises a physical structure and a signal link structure.
Background
Miniaturization and modularization of satellites are always trends in satellite development, and in recent years, small satellites/cubic satellites at home and abroad are in a strong development situation. Commercial off-the-shelf components and standard and modular design are adopted, and compared with other satellites, the satellite-based satellite system has the advantages that the development and emission cost is lower and the period is shorter; the transmission is flexible, and the network can be quickly established to establish a constellation; cuboids are becoming a significant system for the development of military and civil aerospace. Currently, the biggest feature of the cubstar small satellite is standardization and modularization, and the industry is always striving for further miniaturization and modularization of the satellite, and even hope that the units can be plug and play.
The radio frequency module comprises a radio frequency unit and a baseband, wherein the radio frequency unit has the functions of signal digital-to-analog conversion, frequency conversion, amplification, filtering and the like, and the radio frequency unit and the baseband complete the receiving and transmitting processing of signals and realize the satellite wireless communication. The interface exists between the radio frequency unit and the baseband, and how to design the interface, the reliability of the interface, the convenience of installation and the miniaturization of the module are always considered by designers.
In the past, designers often design interfaces and module structures according to specific projects when designing radio frequency modules, so that although the radio frequency modules can meet project requirements, the radio frequency modules are not in accordance with commercial space flight requirements such as modular design, industrial production, batch speed and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to at least solve the problems of integrated transceiving and miniaturization design of a satellite communication machine in the prior art and meet the application requirements.
Aiming at the problems, the utility model provides a transceiver integrated radio frequency module structure of a miniaturized satellite communication machine, which is realized by introducing a high-reliability interface to reduce the complexity of the module and optimizing the circuit structure, and the modulation unit transmitted by the module is placed in a baseband, so that the problems of transmission performance and the like caused by poor IQ signal connection are reduced, and the complexity of the transceiver integrated module signal link structure is reduced. The radio frequency unit interfaces are all located at the physical edge of the module, so that the direct and reliable connection between the radio frequency unit and the baseband is realized, the physical size of the module can be utilized to the maximum, the length of an analog signal input and output connecting line can be ensured to be the shortest, and the insertion loss is reduced. The structural design is suitable for U/V/L/S frequency bands, and can be applied to frequency bands above an X wave band of a satellite communication machine in an expanded mode by installing the radio frequency units in a positive and negative mode, so that the universality of the module is improved. By the technical scheme, the integration level of the satellite communication machine is improved, and the miniaturization and the generalization design of a satellite integrated electronic system are facilitated to be improved.
The utility model relates to a transceiver integrated radio frequency module structure of a miniaturized satellite communication machine, which comprises a radio frequency unit and a baseband, wherein a radio frequency unit interface comprises an intermediate frequency output interface, a modulation signal input interface, a radio frequency signal output interface, a receiving unit interface and a transmitting unit interface, and the baseband interface comprises a receiving intermediate frequency input interface, a modulation signal output interface, a receiving unit interface and a transmitting unit interface.
Optionally, the signal link structure of the receiving unit includes a low-noise amplifier module, a frequency conversion module, and an amplifier and filter module, wherein the frequency conversion module adopts two-stage frequency conversion, and the layout of each functional module of the receiving unit is performed on the front and back sides of the circuit board.
Optionally, the transmitting unit signal link structure includes a power amplifier module, a pre-push module, and a modulation module, where the modulator and the PLL unit are placed in the baseband, and the pre-push module and the power amplifier module are placed in the transmitting unit.
Optionally, when the transceiver-integrated radio frequency module structure is applicable to a U/V/L/S frequency band, the transmitting unit and the receiving unit of the radio frequency unit are integrally designed, and the receiving intermediate frequency input interface, the modulation signal output interface, the receiving unit interface and the transmitting unit interface of the baseband are all located on the same side of the baseband.
The receiving unit interface and the transmitting unit interface are positioned on the left side and the right side under the radio frequency unit.
The intermediate frequency output interface, the modulation signal input interface, the radio frequency signal input interface and the radio frequency signal output interface of the radio frequency unit interface are positioned on the same side edge of the radio frequency unit.
Optionally, when the transceiver-integrated radio frequency module structure is applicable to an X frequency band, the transmitting unit and the receiving unit of the radio frequency unit are independent modules, the receiving intermediate frequency input interface and the modulation signal output interface of the baseband are respectively arranged on the front side and the back side of the baseband, and the receiving unit interface and the transmitting unit interface are also respectively arranged on the front side and the back side of the baseband.
The modulation signal input interface and the radio frequency signal output interface of the transmitting unit are respectively positioned on the same plane of the receiving unit and the transmitting unit, and the receiving unit interface and the transmitting unit interface are respectively positioned at the adjacent side edges of the receiving unit and the transmitting unit and a baseband.
The modulation signal input interface and the radio frequency signal output interface of the transmitting unit are respectively positioned on the side edges of the receiving unit and the transmitting unit, which are positioned on the same side of the receiving unit and the transmitting unit.
The receiving unit interface of the baseband and the receiving unit interface of the receiving unit are located on the left side relative to the baseband, and the transmitting unit interface of the baseband and the transmitting unit interface of the transmitting unit are located on the right side relative to the baseband.
Has the advantages that:
(1) the radio frequency unit and the interface of the baseband are arranged at the edge of the structure, so that the physical size of the module can be utilized to the maximum, namely the interface can not limit the size of the circuit area, and the miniaturization design requirement is met.
(2) The interface of the baseband is close to the interface of the radio frequency unit, so that the insertion loss is reduced.
(3) The modulation module of the transmitting unit is arranged in the baseband, so that the problems of transmitting performance and the like caused by poor connection of IQ signals are reduced, and the complexity of a signal link structure of the receiving-transmitting integrated module is reduced.
(4) The interior of the receiving unit is subjected to reasonable cavity division processing, functions of low-noise amplification, frequency conversion, medium-frequency filtering amplification and the like are realized, and the miniaturization design of a receiving end is realized.
(5) The contact pin design can be changed into a sandwich cake design with a base band clamped by the transceiver module by connecting the transceiver module on the front side and the back side respectively at the X frequency band, and the structure is flexible.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic diagram illustrating the definition of the rf unit and the baseband interface of the rf module according to the present invention.
Fig. 2 is a schematic diagram of a baseband interface of a transceiver-integrated rf module according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a location of an rf unit interface of a transceiver module according to an embodiment of the utility model.
Fig. 4 is a signal link structure of a receiving unit of the transceiver-integrated rf module according to an embodiment of the present invention.
Fig. 5 is a signal link structure of a transmitting unit of the transceiving integrated radio frequency module according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of a physical structure of a transceiver-integrated rf module according to an embodiment of the present invention.
Fig. 7 is a schematic diagram of a physical structure of a radio frequency module integrated with transceiver according to another embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Example (b):
fig. 1 shows the definition of the rf unit and the baseband interface of the integrated transceiver rf module according to the present invention, where the rf unit interface includes an intermediate frequency output interface IF _ Out, a modulated signal input interface MODE _ IN, an rf signal input interface Rx _ IN, an rf signal output interface Tx _ Out, and two integrated low frequency interfaces (a receiving unit interface a and a transmitting unit interface B). The baseband corresponding interfaces are a receiving intermediate frequency input interface ADC _ IN and a modulation signal output interface MODE _ Out, and two integrated low frequency interfaces (a receiving unit interface A1 and a transmitting unit interface B1).
Fig. 2-6 show the situation that the miniaturized satellite communication transceiver integrated rf module structure of the present invention is suitable for U/V/L/S frequency band, and the transmitting unit and the receiving unit of the rf unit are designed integrally. Fig. 2 shows the baseband interface positions of the transceiver-integrated rf module according to an embodiment of the present invention, and it can be seen from the figure that the physical positions of the receiving intermediate frequency input interface ADC _ IN, the modulation signal output interface MODE _ Out, and the two integrated low frequency interfaces (the receiving unit interface a1 and the transmitting unit interface B1, including power supply, clock, control signal, etc.) of the baseband are all located at the edge of the physical structure, and are all located at the same side of the baseband, so that the physical size of the module can be maximally utilized, and the length of the analog signal input/output connection line can also be ensured to be shortest, thereby reducing the insertion loss.
Fig. 3 shows a schematic diagram of an interface position of a radio frequency unit of a transceiver-integrated radio frequency module according to an embodiment of the present invention, and it can be seen from the diagram that the interface position of the radio frequency unit is located at an edge of a physical structure, specifically, an intermediate frequency output interface IF _ Out, a modulation signal input interface MODE _ IN, a radio frequency signal input interface Rx _ IN, and a radio frequency signal output interface Tx _ Out are located on the same plane, specifically, on the same side of the radio frequency unit, so that convenience of external connection is ensured, and two integrated low frequency interfaces (a receiving unit interface a and a transmitting unit interface B) are located on the right and left sides of the right below of the radio frequency unit, so that direct and reliable connection between the radio frequency unit and a baseband is achieved.
Fig. 4 shows a signal link structure of a receiving unit of a radio frequency module integrated with transceiver according to an embodiment of the present invention, where the receiving unit includes a low noise amplifier module, a frequency conversion module, and an amplifying and filtering module, the frequency conversion module of the receiving unit of the radio frequency module integrated with transceiver adopts a two-stage frequency conversion design, the two-stage frequency conversion is divided into different regions on a circuit board of the receiving unit, and the two-stage frequency conversion is divided into different regions for reasonable cavity division processing, and the layout design of each functional module of the receiving unit is performed on the front and back sides of the circuit board, so as to implement the functions of low noise amplification, frequency conversion, and intermediate frequency filtering amplification, and implement the miniaturization design of the receiving end.
Fig. 5 shows a signal link structure of a transmit unit of a transmit-receive integrated radio frequency module according to an embodiment of the present invention, where the transmit unit includes a power amplifier module, a pre-push module, and a modulation module, the transmit unit of the transmit-receive integrated radio frequency module adopts a direct frequency conversion design, a modulator and a PLL unit are placed in a baseband, and the pre-push module and the power amplifier module are placed in the transmit unit, so as to reduce the size of the transmit unit, and simultaneously, the integrated design of the transmit module is realized by considering the heat dissipation processing of the power amplifier of the transmit unit and the design of the receive unit.
Fig. 6 shows a schematic diagram of a physical structure of a transceiver-integrated radio frequency module according to an embodiment of the present invention, IN a plan view above fig. 6, a radio frequency unit is located above, a baseband is located below, only an intermediate frequency output interface IF _ Out, a modulated signal input interface MODE _ IN, a radio frequency signal input interface Rx _ IN, and a radio frequency signal output interface Tx _ Out that are visible to the installed radio frequency unit are invisible at the bottom of the radio frequency unit, and 6 mounting screw hole sites of the radio frequency unit are IN a visible state. Meanwhile, the radio frequency interface of the baseband and the radio frequency interface of the radio frequency unit are also short in connecting line, so that the length of the analog signal input and output connecting line is ensured to be shortest, and the insertion loss is reduced.
Fig. 7 shows a case where the miniaturized satellite communication transceiver-integrated rf module structure of the present invention is applied to the X band. Because the receiving and transmitting integration can not be realized by a single radio frequency unit under the X frequency band, the radio frequency unit comprises a receiving unit and a transmitting unit which are independent modules, compared with the condition that the structure of the receiving and transmitting integration radio frequency module is suitable for the U/V/L/S frequency band, the receiving and transmitting pins of the baseband can be arranged on the front side and the back side, the receiving unit is arranged on one side, the transmitting unit is arranged on the other side, and the receiving and transmitting integration function of the module is realized integrally. At this time, the physical positions of the baseband interfaces are still at the edge of the physical structure, the receiving intermediate frequency input interface ADC _ IN and the modulation signal output interface MODE _ Out are respectively arranged on the front side and the back side of the baseband, and the two integrated low frequency interfaces (the receiving unit interface a1 and the transmitting unit interface B1, including power supply, clock, control signal and the like) are respectively arranged on the front side and the back side of the baseband, so that the physical size of the module can be maximally utilized, the length of the analog signal input/output connecting line can be ensured to be shortest, and the insertion loss is reduced. The intermediate frequency output interface IF _ Out and the radio frequency signal input interface Rx _ IN of the receiving unit, and the modulation signal input interface MODE _ IN and the radio frequency signal output interface Tx _ Out of the transmitting unit are respectively located on the same plane of the receiving unit and the transmitting unit, specifically, on the side of the same side of the receiving unit and the transmitting unit, so that convenience of external connection is ensured. The receiving unit interface a and the transmitting unit interface B are respectively located at the adjacent side edges of the receiving unit and the transmitting unit and the baseband, specifically, the receiving unit interface a1 of the baseband and the receiving unit interface a of the receiving unit are located on the left side relative to the baseband, and the transmitting unit interface B1 of the baseband and the transmitting unit interface B of the transmitting unit are located on the right side relative to the baseband, so that direct and reliable connection between the radio frequency unit (the transmitting unit and the receiving unit) and the baseband is realized. The signal link structure of the receiving unit and the transmitting unit is the same as the structure of the receiving and transmitting integrated radio frequency module when the receiving unit and the transmitting unit are applicable to the U/V/L/S frequency band.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. All changes, equivalents, modifications and the like which come within the spirit and principle of the utility model are desired to be protected.
Claims (10)
1. A miniaturized satellite communication transceiver integrated radio frequency module structure, the radio frequency module includes radio frequency unit and baseband, the radio frequency unit interface includes intermediate frequency output interface (IF _ Out), modulation signal input interface (MODE _ IN), radio frequency signal input interface (Rx _ IN), radio frequency signal output interface (Tx _ Out), receiving unit interface (A) and transmitting unit interface (B), the baseband interface includes receiving intermediate frequency input interface (ADC _ IN), modulation signal output interface (MODE _ Out), receiving unit interface (A1) and transmitting unit interface (B1), characterized IN that,
the radio frequency unit interface and the baseband interface are both positioned at the edge of the physical structure, so that the shortest length of the input and output connecting line of the radio frequency unit and the baseband is ensured.
2. The structure of the rf module of claim 1, wherein the signal link structure of the receiving unit comprises a low noise amplifier module, a frequency conversion module, and an amplifying and filtering module, the frequency conversion module adopts two-stage frequency conversion, and the layout of the functional modules of the receiving unit is performed on the front and back sides of the circuit board.
3. The structure of the rf module of claim 2, wherein the signal link structure of the transmitter unit comprises a power amplifier module, a pre-pulling module, and a modulation module, the modulator and the PLL unit are disposed in the baseband, and the pre-pulling module and the power amplifier module are disposed in the transmitter unit.
4. The structure of claim 3, wherein when the structure is applied to U/V/L/S band, the transmitter and receiver of the RF unit are designed integrally, and the receiving intermediate frequency input interface (ADC _ IN), the modulated signal output interface (MODE _ Out), the receiver interface (A1) and the transmitter interface (B1) of the baseband are located on the same side of the baseband.
5. The structure of the transceiver-integrated rf module of claim 4, wherein the intermediate frequency output interface (IF _ Out), the modulated signal input interface (MODE _ IN), the rf signal input interface (Rx _ IN), and the rf signal output interface (Tx _ Out) of the rf unit interface are located on the same plane, and the receiving unit interface (a) and the transmitting unit interface (B) are located on the right, left, and right sides of the rf unit.
6. The integrated radio frequency module structure of claim 5, wherein the intermediate frequency output interface (IF _ Out), the modulated signal input interface (MODE _ IN), the radio frequency signal input interface (Rx _ IN), and the radio frequency signal output interface (Tx _ Out) of the radio frequency unit interface are located at the same side of the radio frequency unit.
7. The RF module structure of claim 3, wherein when the RF module structure is applied to the X band, the transmitter and the receiver of the RF unit are independent modules, the receiving IF input interface (ADC _ IN) and the modulating signal output interface (MODE _ Out) of the baseband are respectively disposed on the front and back sides of the baseband, and the receiver interface (A1) and the transmitter interface (B1) are respectively disposed on the front and back sides of the baseband.
8. The structure of claim 7, wherein the intermediate frequency output interface (IF _ Out) and the radio frequency signal input interface (Rx _ IN) of the receiving unit, the modulation signal input interface (MODE _ IN) and the radio frequency signal output interface (Tx _ Out) of the transmitting unit are respectively located on a same plane of the receiving unit and the transmitting unit, and the receiving unit interface (A) and the transmitting unit interface (B) are respectively located at adjacent side edges of the receiving unit and the transmitting unit and the baseband.
9. The structure of claim 8, wherein the intermediate frequency output interface (IF _ Out) and the radio frequency signal input interface (Rx _ IN) of the receiving unit, and the modulation signal input interface (MODE _ IN) and the radio frequency signal output interface (Tx _ Out) of the transmitting unit are respectively located on the sides of the receiving unit and the transmitting unit that are located on the same side of the receiving unit and the transmitting unit.
10. The transceiver-integrated rf module structure of claim 9, wherein the receiving unit interface (a1) of the baseband and the receiving unit interface (a) of the receiving unit are located on the left side with respect to the baseband, and the transmitting unit interface (B1) of the baseband and the transmitting unit interface (B) of the transmitting unit are located on the right side with respect to the baseband.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121762540.5U CN215344561U (en) | 2021-07-30 | 2021-07-30 | Miniaturized satellite communication machine receiving and transmitting integrated radio frequency module structure |
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| CN202121762540.5U CN215344561U (en) | 2021-07-30 | 2021-07-30 | Miniaturized satellite communication machine receiving and transmitting integrated radio frequency module structure |
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| CN215344561U true CN215344561U (en) | 2021-12-28 |
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| CN202121762540.5U Active CN215344561U (en) | 2021-07-30 | 2021-07-30 | Miniaturized satellite communication machine receiving and transmitting integrated radio frequency module structure |
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