Wireless transmission device and electronic equipment

Abstract

This utility model discloses a wireless transmission device and an electronic device. The wireless transmission device includes a transmitting end and a receiving end. The transmitting end and the receiving end are respectively equipped with multiple one-to-one corresponding antennas. The communication method between the one-to-one corresponding antennas is near-field communication. The multiple one-to-one corresponding antennas are respectively equipped with different carrier frequencies and preset bandwidths, so that the carrier frequencies of adjacent antennas of the transmitting end and the receiving end are staggered by a preset frequency threshold. By using different frequency band carriers in combination with antennas of different bandwidths, the requirement for multiple wireless communications to work simultaneously in a nearby space or in the same package is realized. Conventional antennas can be used, greatly reducing the design difficulty, thereby shortening the research and development cycle and reducing the research and development cost. Through reasonable antenna carrier and bandwidth design, the stable and reliable operation of the entire system's wireless communication can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of near-field communication, and in particular to a wireless transmission device and electronic device. Background Technology

[0002] Using ASK modulation architecture (such as Figure 1 Millimeter-wave communication (as shown) has many applications in the field of short-range communication, such as wireless data transmission for LED screens, slip rings, and isolation. Millimeter-wave communication can effectively solve the problems faced by traditional application solutions, such as insertion and removal life loss, poor signal quality, and limited voltage resistance.

[0003] To reduce the design difficulty and cost of clients, AiP packaging has become the preferred solution for many companies. However, with the continuous increase in data volume and the continuous reduction in package size, the need to include multiple millimeter-wave communications in the same application scenario or the same package is constantly being raised, such as full-duplex communication scenarios, multi-channel digital isolation scenarios, and slip ring applications.

[0004] However, in near-field point-to-point communication, multi-channel wireless communication architectures are prone to interference between adjacent channels. The current mainstream solution is to design full-duplex antennas to address this interference issue. This typically involves using antennas with different polarizations to improve isolation, but this method is very difficult to design, has poor stability, and is subject to stringent application conditions. Alternatively, structural designs can be used to circumvent interference, such as by attaching absorbing materials. However, this method has poor reliability and high cost; if the absorbing material detaches, communication errors will immediately occur. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a wireless transmission device and electronic device that can effectively reduce the difficulty and cost of solving the interference problem between adjacent channels in near-field communication.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A wireless transmission device includes a transmitter and a receiver;

[0008] The transmitting end and the receiving end are each equipped with multiple one-to-one corresponding antennas;

[0009] The communication method between the one-to-one corresponding antennas is near-field communication;

[0010] The multiple one-to-one antennas are each configured with different carrier frequencies and preset bandwidths, so that the carrier frequencies of adjacent antennas at the transmitting end and the receiving end are staggered by a preset frequency threshold.

[0011] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is as follows:

[0012] An electronic device comprising the aforementioned wireless transmission device.

[0013] The beneficial effects of this utility model are as follows: In the application scenario of multi-channel near-field communication, the transmitting end and the receiving end are respectively equipped with multiple one-to-one corresponding antennas. The multiple one-to-one corresponding antennas are respectively equipped with different carrier frequencies and preset bandwidths, so that the carrier frequencies of adjacent antennas of the transmitting end and the receiving end are staggered by a preset frequency threshold. By staggering the frequencies of antennas of adjacent channels by a preset frequency threshold, the anti-interference requirements between signals of different channels can be achieved. The use of different frequency band carriers in combination with antennas of different bandwidths realizes the requirement for multiple wireless communications to work simultaneously in adjacent space or in the same package. Conventional antennas can be used, greatly reducing the design difficulty, thereby shortening the research and development cycle and reducing the research and development cost. Through reasonable antenna carrier and bandwidth design, the stable and reliable operation of the entire system wireless communication can be achieved. Attached Figure Description

[0014] Figure 1 This is a system architecture diagram of the existing technology that uses the ASK modulation architecture;

[0015] Figure 2 This is a schematic diagram of the structure of the dual-channel unidirectional data transmission device according to an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the structure of the dual-channel out-of-direction data transmission device according to an embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram illustrating the carrier frequency misalignment in an embodiment of the present invention.

[0018] Figure 5 This is another schematic diagram showing the carrier frequencies being staggered according to an embodiment of the present invention;

[0019] Figure 6 This is a schematic diagram of the data transmission device for realizing full-duplex communication according to an embodiment of the present invention.

[0020] Figure 7 This is a schematic diagram of the structure of the multi-channel unidirectional data transmission device according to an embodiment of the present invention;

[0021] Figure 8 This is a schematic diagram of the structure of the multi-channel heterogeneous data transmission device according to an embodiment of the present invention. Detailed Implementation

[0022] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0023] The wireless transmission device described above is applicable to various near-field communication applications that require solving interference problems between different wireless transmission channels, such as full-duplex communication scenarios, multi-channel digital isolation scenarios, and slip ring applications. The following detailed embodiments illustrate this:

[0024] In one alternative implementation, such as Figure 2 As shown, a wireless transmission device includes a transmitter and a receiver;

[0025] The transmitting end and the receiving end are each equipped with multiple one-to-one corresponding antennas;

[0026] like Figure 2 As shown, the transmitting end includes transmitting antenna 1 and transmitting antenna 2, and the receiving end is correspondingly equipped with receiving antenna 1 and receiving antenna 2. Transmitting antenna 1 and receiving antenna 1 correspond to each other, and transmitting antenna 2 and receiving antenna 2 correspond to each other.

[0027] The communication method between the one-to-one corresponding antennas is near-field communication;

[0028] In one alternative implementation, near-field communication can be millimeter-wave communication. Millimeter-wave communication can effectively achieve signal isolation on the one hand, and wireless communication on the other hand, making it particularly suitable for scenarios that require both signal isolation and communication.

[0029] The multiple one-to-one antennas are each set with different carrier frequencies and preset bandwidths, so that the carrier frequencies of adjacent antennas at the transmitting end and the receiving end are staggered by a preset frequency threshold.

[0030] like Figure 4 As shown, the carrier frequencies of transmitting antenna 1 and receiving antenna 1 can be set to f1, and the carrier frequencies of transmitting antenna 2 and receiving antenna 2 can be set to f2. The bandwidths of transmitting antenna 1, transmitting antenna 2 and receiving antenna 1 and receiving antenna 2 can be set respectively, so that the carrier frequencies of transmitting antenna 1 and transmitting antenna 2 are staggered by a distance of f2-f1. This distance can be set to 2GHz, 4GHz or 6GHz, and can be selected according to the total adjustable frequency range of the chip, the number of channels and the difficulty of antenna design, so that the signals transmitted between transmitting antenna 1 and transmitting antenna 2 will not interfere with each other.

[0031] In this system, antennas that correspond one-to-one with the transmitting and receiving ends can form antenna pairs. For example, transmitting antenna 1 and receiving antenna 1 form one antenna pair, and transmitting antenna 2 and receiving antenna 2 form another antenna pair. The bandwidth of each antenna pair can be set to be the same. For example, the bandwidth of the antenna pair can be set to 1GHz, 2GHz, or 4GHz, etc. The bandwidth is required to be less than f2-f1. The specific value is related to the signal attenuation rate to ensure that the out-of-band signal can be attenuated to below the minimum signal receiving power.

[0032] Figure 5 The diagram shows the setting of carrier frequencies and antenna bandwidths for n antenna pairs. By reasonably setting the carrier frequencies and antenna bandwidths of each antenna pair, signal isolation between the antenna pairs can be achieved, avoiding mutual interference. In order to achieve the staggering of carrier frequencies of each antenna pair, it can be achieved through design or trimming. In an optional implementation, the carrier frequencies of each antenna pair can be read and set by the Efuse programming method commonly used in existing chip design, thereby achieving the frequency staggering requirement of each antenna pair.

[0033] In another optional implementation, the signal modulation method of the transmitting end is ASK modulation, and the signal demodulation method of the receiving end is ASK demodulation.

[0034] In specific implementation, such as Figure 2 As shown, TX1 and TX2 are wireless transmitters that use ASK modulation to modulate the input signal and then send it to transmitting antenna 1 and transmitting antenna 2 respectively. RX1 and RX2 are responsible for demodulating the electrical signals converted by receiving antenna 1 and receiving antenna 2 to recover the input signal.

[0035] If an application scenario contains one or more sets of TX1, TX2, RX1 and RX2 at the same time, the wireless signals will interfere with each other. The dotted line in the figure is the interference path.

[0036] To solve this problem, the carrier frequencies f1 and f2 of TX1 and TX2 need to be staggered by a certain range through design or trimming. At the same time, the bandwidth center of transmitting antenna 1 and receiving antenna 1 should be designed at f1, and the bandwidth center of transmitting antenna 2 and receiving antenna 2 should be designed at f2. This makes the bandwidths of transmitting antenna 1 and receiving antenna 1 and the bandwidths of transmitting antenna 2 and receiving antenna 2 staggered in frequency. At this time, receiving antenna 1 will have a filtering effect on the wireless signal of TX2 (carrier frequency f2), and receiving antenna 2 will also have a filtering effect on the wireless signal of TX1 (carrier frequency f1), thereby achieving the anti-interference requirement between the two sets of signals.

[0037] In a preferred embodiment, the ASK is OOK. By adopting the OOK modulation method, it is simple and reliable. The radio frequency signal is transmitted when the input is high and the radio frequency signal is stopped when the input is low.

[0038] In another optional embodiment, the signal transmission directions of the antennas at the transmitting end are the same; in another optional embodiment, the signal transmission directions of the antennas at the transmitting end are different; by setting different antennas to stagger the carrier frequency, the signal transmission directions of each antenna at the transmitting end can be flexibly set without interference.

[0039] like Figure 2 As shown, the signal transmission directions of the two antennas at the transmitting end are the same, and both antennas at the transmitting end are transmitting antennas. Figure 3 As shown, the two antennas at the transmitting end transmit signals in opposite directions; one is a transmitting antenna, and the other is a receiving antenna.

[0040] Since the transmitter and receiver use near-field communication, they can operate in adjacent spaces or be integrated on the same substrate, such as being packaged on the same substrate. This allows for flexible device size settings, ensuring device integration while avoiding mutual interference between signals.

[0041] Figure 6 The diagram shows a full-duplex application scenario. By staggering the frequencies of TX1 and TX2, and staggering the bandwidths of receiving antenna 1 and receiving antenna 2 according to the above implementation method, full-duplex communication can be achieved. This scheme is also applicable to slip ring application scenarios, by simply replacing the antenna with a circularly polarized antenna.

[0042] In another alternative implementation, for applications where multiple TX and RX groups operate in adjacent spaces or within the same package, simply staggering the frequencies and bandwidths as described above is sufficient. Figure 7 The image shows an application scenario for multi-channel unidirectional transmission;

[0043] Figure 7 The diagram illustrates an application scenario for multi-channel heterogeneous transmission. In this implementation, the transmission directions of adjacent antennas at the transmitting end can be set to be different. For example, the transmitting end has four antennas, which are arranged from top to bottom as transmitting antenna 1, receiving antenna 2, transmitting antenna 3, and receiving antenna 4, thereby better achieving mutual isolation of signals.

[0044] In another alternative embodiment, an electronic device includes a wireless transmission device as described in any of the above embodiments. The electronic device may be a full-duplex communication device, a multi-channel digital isolation device, or a slip ring, etc.

[0045] In summary, the wireless transmission device and electronic device provided by this utility model sets carrier frequencies and bandwidths of different antenna pairs corresponding to the transmitting and receiving ends, so that the frequencies of each antenna pair are staggered, avoiding mutual interference between antenna pairs. This enables multiple wireless communications to work simultaneously in a nearby space or in the same package, effectively solving the interference problem between adjacent channels in near-field communication. This solution can use conventional antennas, thus greatly reducing the design difficulty, which also means a reduction in R&D cycle and cost. By reasonably designing the carrier frequency and bandwidth of the antennas, the stable and reliable operation of the entire system's wireless communication can be achieved. At the same time, since it is suitable for near-field communication scenarios, the simplest OOK modulation method can be used, thereby reducing mutual interference between multiple channels within the same device or the same chip in a simple and low-cost manner.

[0046] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A wireless transmission device, characterized in that, Includes the sending end and the receiving end; The transmitting end and the receiving end are each equipped with multiple one-to-one corresponding antennas; The communication method between the one-to-one corresponding antennas is near-field communication; The multiple one-to-one antennas are each configured with different carrier frequencies and preset bandwidths, so that the carrier frequencies of adjacent antennas at the transmitting end and the receiving end are staggered by a preset frequency threshold.

2. The wireless transmission device according to claim 1, characterized in that, The near-field communication includes millimeter-wave communication.

3. The wireless transmission device according to claim 1, characterized in that, The preset frequency threshold is 2GHz, 4GHz or 6GHz.

4. A wireless transmission device according to any one of claims 1 to 3, characterized in that, The signal modulation method of the transmitting end includes ASK modulation, and the signal demodulation method of the receiving end includes ASK demodulation.

5. A wireless transmission device according to claim 4, characterized in that, The ASK is OOK.

6. A wireless transmission device according to any one of claims 1 to 3, characterized in that, The antennas at the transmitting end have the same signal transmission direction.

7. A wireless transmission device according to any one of claims 1 to 3, characterized in that, The antennas at the transmitting end have different signal transmission directions.

8. A wireless transmission device according to claim 7, characterized in that, The transmission directions of adjacent antennas at the transmitting end are different.

9. A wireless transmission device according to any one of claims 1 to 3, characterized in that, The transmitting end and the receiving end are integrated on the same substrate.

10. An electronic device, characterized in that, The wireless transmission device includes any one of claims 1 to 9.

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