CN212278233U - Communication module of M.2 interface based on 5G - Google Patents

Abstract

The utility model discloses a communication module of M.2 interface based on 5G, including the M.2 interface, the M.2 interface links to each other with the 5G module through power conversion and level conversion respectively, the 5G module links to each other with the antenna. Meanwhile, the transmission and information transfer of various signals of 5G NR, LTE,3G and 2G are supported. The technical scheme solves the problem of conversion between a module and an M2 protocol, and achieves the standard of a standard protocol, a PCB is required to meet a 5G NR frequency band, an LTE frequency band, a 3G frequency band and a 2G frequency band coexisting microstrip line routing treatment, and ensures that the standing-wave ratio is less than or equal to 1.2 while ensuring insertion loss, the isolation of 4 antennas is less than or equal to-25 dB, mutual noninterference among 4 antennas is ensured, the problem of boosting from 3.3V M2 standard voltage to 4V is solved, the capacity of 3A is ensured, meanwhile, the pressure difference is ensured to be controlled within 4V +/-0.1V, and the ripple wave is controlled within 70mV-100 mV.

Description

Communication module of M.2 interface based on 5G

Technical Field

The utility model relates to the field of communication technology, especially, relate to a communication module of M.2 interface based on 5G.

Background

With the development of global science and technology, the 5G era has been formally advanced in the field of communication, and the rapid development of 5G provides a good foundation for the industrial internet. Due to the rapid development of 4K/8K ultra high definition video applications and the increasing growth of AR and VR applications, 5G is required to supplement the capacity of 4G networks. The 5G technology can integrate and realize the full potential of mobile technology, big data, IoT and cloud computing, support digital transformation across different departments, including healthcare, smart vehicles, smart homes, industrial automation, and the like. The devices are designed and built to support the increased speed, capacity and bandwidth of 5G networks.

Data show that, the 5G module is packaged by LGA, the number of pins is hundreds, the client is directly attached to the client product, and the client needs to perform ball straightening and then patch mounting on the 5G module. The reject ratio is very high, the straight ball efficiency is low, some customers even give up the straight ball, the maintenance is not easy, the main control board is scrapped due to the 5G damage, and the whole product scrapping risk is easily caused after the products are not sold easily.

Chinese patent document CN209562545U discloses a "portable interface module based on 5G communication". The method comprises the following steps: first resonant circuit, second resonant circuit and middle electric capacity, the one end of first resonant circuit is used for connecting main circuit board, and the other end is connected the one end of middle electric capacity, the other end of middle electric capacity is connected the one end of second resonant circuit, the other end of second resonant circuit is used for connecting the 5G antenna. The above technical solution cannot satisfy the conversion between the module and the M2 protocol.

Disclosure of Invention

The utility model discloses it is many mainly to solve original 5G module pin, the technical problem that the straight ball defective rate is high, the communication module of an M.2 interface based on 5G is provided, solve the conversion between module and the M2 agreement, reach standard protocol standard, will satisfy 5G NR frequency channel on the PCB, the LTE frequency channel, the 3G frequency channel, the line processing is walked to the coexistent microstrip line of 2G frequency channel, under the condition that the assurance frequency satisfies, guarantee that the standing-wave ratio is less than or equal to 1.2 when guaranteeing the insertion loss, it is less than or equal to-25 dB to solve 4 antenna interval isolation, guarantee mutual noninterference between 4 antennas, the solution is from 3.3V's M2 standard voltage to 4V, guarantee output current and guarantee 3A's capacity, guarantee simultaneously that differential pressure control is within 4V 0.1V, control is within 70mV-100mV ripple.

The above technical problem of the present invention can be solved by the following technical solutions: the utility model discloses a M.2 interface, the M.2 interface links to each other with the 5G module through power conversion and level conversion respectively, the 5G module links to each other with the antenna. Meanwhile, the transmission and information transfer of various signals of 5G NR, LTE,3G and 2G are supported.

Preferably, the input end of the power conversion circuit is connected with the power input end, and the output end of the power conversion circuit is connected with the power input end of the 5G module. The power conversion circuit is used for realizing boosting from 3.3V to 4V.

Preferably, the voltage at the output end of the power conversion circuit is 4V, and the output peak current is 3A. PCIE is connected with pins 41,43,47,49,53,55,50,52 and 54, power is supplied to the product 3V, the product is boosted to 4V, and the output peak current of 3A is guaranteed.

Preferably, the level shift circuit comprises 5 branches.

Preferably, the antenna includes ANT0, ANT1, ANT2 and ANT 3. The 4 antennas support a plurality of different frequency bands respectively.

Preferably, the communication module has a plate thickness of 0.8mm and a thickness of 0.1mm or less in a positive offset direction. The thickness design solves the problem of loose M.2 plug.

Preferably, the communication module is provided with a shielding case. In order to prevent the power interference, a shielding cover shielding method is adopted to prevent the interference.

Preferably, the communication module is provided with a startup debouncing circuit and a reset debouncing circuit. The starting-up debouncing circuit and the reset debouncing circuit adopt capacitors to debounce.

Preferably, the communication module identification device includes USB2.0, USB3.0, and PCIE device. The multiple devices capable of being identified are convenient for users to exchange and transmit information through products.

Preferably, the serial port setting rate of the communication module is 115200.

The utility model has the advantages that:

1. the embedded type terminal product can realize the 5G communication function.

2. The conversion between the 5G module and the M2 protocol is solved, and the standard protocol standard is achieved.

3. Can be used for 5G product development to use, the customer end can directly imbed this product and use, avoids causing the economic loss that whole product is bad to bring because of 5G is bad, avoids thing networking equipment trouble risk in batches.

Drawings

Fig. 1 is a block diagram of a circuit principle connection structure of the present invention.

Fig. 2 is a circuit diagram of an external interface of the present invention.

Fig. 3 is a power conversion circuit diagram of the present invention.

Fig. 4 is a circuit diagram of a level shift circuit according to the present invention.

Fig. 5 is a circuit diagram of an antenna connection circuit according to the present invention.

Fig. 6 is a front view of the present invention.

Fig. 7 is a side view of the present invention.

In the figure, 1M.2 interface, 2 power conversion, 3 level conversion, 45G module and 5 antennae are adopted.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b): a communication module based on a 5G m.2 interface of this embodiment, as shown in fig. 1, includes an m.2 interface 1, where the m.2 interface 1 is connected to a 5G module 4 through a power conversion 2 and a level conversion 3, respectively, and the 5G module 4 is connected to an antenna 5. Meanwhile, the transmission and information transfer of various signals of 5G NR, LTE,3G and 2G are supported. The external interface of the communication module is shown in fig. 2, and the communication module is provided with a start-up debouncing circuit and a reset debouncing circuit which both adopt capacitors to debounce, so that normal start-up and shut-down are realized, and stable work is ensured. The communication module identification equipment comprises USB2.0, USB3.0 and PCIE equipment, and various equipment capable of being identified is convenient for a user to exchange and transmit information through a product.

As shown in fig. 3, the input terminal of the power conversion 2 circuit is connected to the power input terminal, and the output terminal of the power conversion 2 circuit is connected to the power input terminal of the 5G module 4. The voltage of the output end of the power supply conversion 2 circuit is 4V, and the output peak current is 3A. The power conversion circuit is used for realizing boosting from 3.3V to 4V. PCIE is connected with pins 41,43,47,49,53,55,50,52 and 54, power is supplied to a product of 3.3V, the product is boosted to 4V, and the output peak current of 3A is ensured.

As shown in fig. 4, the level shift 3 circuit includes 5 branches. The communication module is provided with a shielding cover. In order to prevent the power interference, a shielding cover shielding method is adopted to prevent the interference.

As shown in fig. 5, antenna 5 includes ANT0, ANT1, ANT2, and ANT 3. The 4 antennas support a number of different frequency bands, respectively, as shown in the following table.

The PCB is required to meet the requirement of microstrip line routing processing of 5G NR frequency band, LTE frequency band, 3G frequency band and 2G frequency band coexistence, under the condition of ensuring frequency satisfaction, the standing-wave ratio is ensured to be less than or equal to 1.2 while insertion loss is ensured, the problem that the isolation degree of 4 antennas is less than or equal to-25 dB is solved, and mutual noninterference among 4 antennas is ensured.

As shown in fig. 6 and 7, the thickness of the communication module plate is 0.8mm, and the thickness is not more than 0.1 mm. The thickness design solves the problem of loose plugging and unplugging of M.2.

In operation, the external interface is shown in fig. 2, and the product package pins are defined as follows. The SIM card is connected with pins 66, 36, 34, 32, 30 and 56 of a product, the USB2.0 is connected with pins 7 and 9 of the product, the USB3.0 is connected with pins 29, 31, 35, 37 and 58, the audio decryption chip is connected with pins 20, 22, 24, 28, 40 and 42, PCIE is connected with pins 41,43,47,49,53,55,50,52 and 54 to supply power to the product 3.3V, the product is boosted to 4V and ensure the output peak current of 3A, the pin PSW _ ON/OFF of No. 6 is reduced to be more than or equal to 1s, the pin Sleep _ tus of No. 10 is increased to indicate the working state, the host can identify USB2.0 or USB3.0 or PCIE equipment, and the PC _ UI is virtualized, the serial port sets the speed 115200, the dialing is realized by sending an at number ^ ndisdup to 1, the host can dial, after the host succeeds, the virtualized network card is connected to the internet, and the host can perform data communication by short message service (short message) communication, voice traffic.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms interface, antenna, input, output etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (10)

1. The communication module based on the 5G M.2 interface is characterized by comprising an M.2 interface (1), wherein the M.2 interface (1) is connected with a 5G module (4) through a power supply conversion (2) and a level conversion (3) respectively, and the 5G module (4) is connected with an antenna (5).

2. The communication module of the 5G-based M.2 interface of claim 1, wherein the input end of the power conversion (2) circuit is connected with the power input end, and the output end of the power conversion (2) circuit is connected with the power input end of the 5G module (4).

3. The communication module based on the 5G M.2 interface of claim 2, wherein the voltage at the output end of the power conversion (2) circuit is 4V, and the output peak current is 3A.

4. A 5G m.2 interface based communication module according to claim 1, wherein the level conversion (3) circuit comprises 5 branches.

5. The communication module of claim 1, wherein the antenna (5) comprises ANT0, ANT1, ANT2 and ANT 3.

6. The communication module of claim 1, wherein the communication module is 0.8mm thick and has a thickness of 0.1mm or less.

7. The communication module of claim 1, wherein a shielding case is disposed on the communication module.

8. The communication module of claim 1, wherein the communication module is provided with a power-on debouncing circuit and a reset debouncing circuit.

9. The communication module of claim 1, wherein the communication module identification device comprises a USB2.0, a USB3.0, and a PCIE device.

10. The communication module of claim 1 or 9, wherein the serial port setting rate of the communication module is 115200.

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