Multi-signal channel millimeter wave digital isolator and isolation system

Abstract

The utility model provides a multi-signal-channel millimeter wave digital isolator and an isolation system. The multi-signal-channel millimeter wave digital isolator comprises a first isolation side and a second isolation side, the first isolation side comprises a first millimeter wave antenna and a first transmitting circuit; the second isolation side comprises a second millimeter wave antenna and a second receiving circuit; the first millimeter wave antenna is connected with the second millimeter wave antenna; the first transmitting circuit comprises a first coupling unit and more than two first transmitting units; the more than two first transmitting units are respectively connected with the first coupling unit, and the first coupling unit is connected with the first millimeter wave antenna; the second receiving circuit comprises a second distribution unit and more than two second receiving units; the more than two second receiving units are respectively connected with the second distribution unit, and the second distribution unit is connected with the second millimeter wave antenna. One-way or two-way millimeter wave wireless isolation transmission of multiple signal channels can be realized between the two isolated ends, and higher transmission speed, higher bandwidth and higher isolation are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of isolation communication, in particular to a multi-signal-channel millimeter-wave digital isolator and an isolation system. Background Art

[0002] A digital isolator is used to transmit digital signals between different voltage domains while providing electrical isolation to prevent signal interference. For a multi-signal channel, that is, a digital isolator with more than two signal channels, its application circuit (such as a half-bridge driver, a DC / DC inverter, an ADC or a DAC, etc.) needs to be equipped with at least two sets of TX-RX and two sets of coupling devices to achieve signal feedback. Most of the multi-signal-channel digital isolators in the prior art adopt electrical isolation technologies such as magnetic coupling isolation and capacitive coupling isolation. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is: for a multi-signal-channel millimeter-wave digital isolator and an isolation system, millimeter-wave wireless isolation transmission of multiple signal channels can be achieved between both ends, with higher transmission speed, higher bandwidth and higher isolation degree.

[0004] To solve the above technical problem, the first technical solution adopted by the utility model is:

[0005] A multi-signal-channel millimeter-wave digital isolator includes a first isolation side and a second isolation side; the first isolation side includes a first millimeter-wave antenna and a first transmitting circuit; the second isolation side includes a second millimeter-wave antenna and a second receiving circuit; the first millimeter-wave antenna and the second millimeter-wave antenna are wirelessly connected based on millimeter-wave communication;

[0006] The first transmitting circuit includes a first coupling unit and more than two first transmitting units; the more than two first transmitting units are respectively connected to the first coupling unit, and the first coupling unit is connected to the first millimeter-wave antenna;

[0007] The second receiving circuit includes a second distribution unit and more than two second receiving units; the more than two second receiving units are respectively connected to the second distribution unit, and the second distribution unit is connected to the second millimeter-wave antenna.

[0008] Optionally, the first coupling unit is a power combiner; the second distribution unit is a power divider.

[0009] Optionally, the first transmitting unit includes a voltage-controlled oscillator; the second receiving unit includes a band-pass filter and an envelope detector connected in sequence; the voltage-controlled oscillator is connected to the first coupling unit; the band-pass filter is connected to the second distribution unit.

[0010] Optionally, the first transmitting unit includes a voltage-controlled oscillator and a power amplifier connected in sequence; the power amplifier is connected to the first coupling unit;

[0011] The second receiving unit includes a band-pass filter and an envelope detector connected in sequence; the envelope detector is connected to the second distribution unit.

[0012] Optionally, the first transmitting unit includes a voltage-controlled oscillator, a mixer, and a power amplifier connected in sequence; the power amplifier is connected to the first coupling unit;

[0013] The second receiving unit includes a band-pass filter and a mixer connected in sequence; the mixer of the second receiving unit is connected to the second distribution unit.

[0014] Optionally, both the first millimeter-wave antenna and the second millimeter-wave antenna are full-duplex millimeter-wave antennas;

[0015] The first isolation side further includes a first receiving circuit; the second isolation side further includes a second transmitting circuit;

[0016] The first receiving circuit includes a first distribution unit and more than two first receiving units; the more than two first receiving units are respectively connected to the first distribution unit, and the first distribution unit is connected to the first millimeter-wave antenna;

[0017] The second transmitting circuit includes a second coupling unit and more than two second transmitting units; the more than two second transmitting units are respectively connected to the second coupling unit, and the second coupling unit is connected to the second millimeter-wave antenna.

[0018] Optionally, the second coupling unit is a power combiner; the first distribution unit is a power divider.

[0019] Optionally, the second transmitting unit includes a voltage-controlled oscillator, or includes a voltage-controlled oscillator and a power amplifier connected in sequence, or includes a voltage-controlled oscillator, a mixer, and a power amplifier connected in sequence;

[0020] The first receiving unit includes a band-pass filter and an envelope detector connected in sequence, or includes a band-pass filter and a mixer connected in sequence.

[0021] Optionally, the multi-signal-channel millimeter-wave digital isolator is a multi-signal-channel millimeter-wave digital isolator chip.

[0022] The second technical solution adopted by the present invention is:

[0023] A multi-signal-channel millimeter-wave isolation system includes the above-mentioned multi-signal-channel millimeter-wave digital isolator.

[0024] The beneficial effects of the present utility model are as follows: The present utility model provides a millimeter-wave digital isolator for multi-signal channels. The first transmitting circuit on the first isolation side includes multiple transmitting channels for transmitting different signals, with different carrier frequencies for each channel. Each channel is fed into the first millimeter-wave antenna via the first coupling unit and is wirelessly isolated and transmitted through millimeter waves to the second receiving circuit on the second isolation side; the second receiving circuit also includes multiple receiving channels, and each receiving channel is provided with a band-pass filter and an envelope detector with different frequencies. Therefore, each receiving channel will only receive signals of the corresponding frequency and filter out signals of other frequencies. Since the frequencies of each channel in the first isolation side and the second isolation side are different, they will not interfere with each other; at the same time, isolation transmission is carried out between the first isolation side and the second isolation side based on millimeter-wave wireless communication technology; further, full-duplex multi-channel isolation transmission can also be achieved. Therefore, the present utility model can achieve high-speed, high-bandwidth, and high-isolation isolation transmission for multi-signal channels; it can also be high-speed, high-bandwidth, and high-isolation isolation transmission for full-duplex multi-channels, with a two-way communication function. Description of the Drawings

[0025] Figure 1 It is a simplified structural schematic diagram of the multi-signal channel millimeter-wave digital isolator provided by the present utility model;

[0026] Figure 2 It is the output spectrum diagram of the transmitting circuit in the multi-signal channel millimeter-wave digital isolator provided by the present utility model;

[0027] Figure 3 (a)-(c) are three optional internal structures of the transmitting unit in the multi-signal channel millimeter-wave digital isolator provided by the present utility model;

[0028] Figure 4 (a)-(b) are two optional internal structures of the receiving unit in the multi-signal channel millimeter-wave digital isolator provided by the present utility model;

[0029] Figure 5 It is a structural schematic diagram of the multi-signal channel millimeter-wave digital isolator provided for a preferred specific example of the present utility model;

[0030] Figure 6 It is a simplified structural schematic diagram of the full-duplex multi-signal channel millimeter-wave digital isolator provided by the present utility model;

[0031] Figure 7 It is a structural schematic diagram of the full-duplex multi-signal channel millimeter-wave digital isolator provided for the preferred specific embodiment of the present utility model.

[0032] Label Description:

[0033] 10: First isolation side; 20: Second isolation side;

[0034] 11: First millimeter-wave antenna; 12: First transmitting circuit; 13: First receiving circuit;

[0035] 12-1: First coupling unit; 12-2: First distribution unit;

[0036] TX1-1 to TX n -1: First transmitting unit;

[0037] RXa-1 to RXm-1: First receiving units;

[0038] 21: Second millimeter-wave antenna; 22: Second receiving circuit; 23: Second transmitting circuit;

[0039] 22-1: Second distribution unit; 22-2: Second coupling unit;

[0040] RX1-2 to RX n -2: Second receiving unit;

[0041] TXa-2 to TXm-2: Second transmitting units;

[0042] VCO1 to VCO N and VCOa to VCOm: Voltage-controlled oscillators;

[0043] BPF1 to BPF N and BPFa to BPFm: Band-pass filters;

[0044] ENV1 to ENV N and ENVa to ENVm: Envelope detectors. Detailed implementation manners

[0045] To describe in detail the technical content, achieved objectives and effects of the present utility model, the following is described in conjunction with the implementation manners and with reference to the accompanying drawings.

[0046] Please refer to Figures 1 to 4 , Embodiment 1 of the present utility model is as follows:

[0047] The present utility model provides a multi-signal-channel millimeter-wave digital isolator. As Figure 1 shown, it includes a first isolation side 10 and a second isolation side 20; the first isolation side 10 includes a first millimeter-wave antenna 11 and a first transmitting circuit 12; the second isolation side 20 includes a second millimeter-wave antenna 21 and a second receiving circuit 22; the first millimeter-wave antenna 11 and the second millimeter-wave antenna 21 are wirelessly connected based on millimeter-wave communication;

[0048] The first transmitting circuit 12 includes a first coupling unit 12-1 and more than two first transmitting units (such as Figure 1 specifically including TX1-1, TX2-1, TX3-1, TX4-1... TX n -1); each first transmitting unit is respectively connected to the first coupling unit 12-1, and the first coupling unit 12-1 is connected to the first millimeter-wave antenna 11;

[0049] The second receiving circuit 22 includes a second distribution unit 22-1 and more than two second receiving units RX-2 (such as Figure 1 specifically including RX1-2, RX2-2, RX3-2, RX4-2... RX n -2); each second receiving unit is respectively connected to the second distribution unit 22-1, and the second distribution unit 22-1 is connected to the second millimeter-wave antenna 21.

[0050] In this embodiment, the first transmitting circuit on the first isolation side constructs multiple transmitting channels through multiple first transmitting units (TX1-1 to TX n -1), and the carrier frequencies of each transmitting channel are different; different signals (such as Signal1 to SignalN) are respectively transmitted by different transmitting channels. Then, the signals of each transmitting channel are uniformly sent to the first coupling unit, and through it, the powers of multiple signal sources are combined into one signal for output. The output signal is fed into the first millimeter-wave antenna, and is isolated and transmitted to the second millimeter-wave antenna based on millimeter-wave wireless communication technology. The spectrogram output by the first transmitting circuit on the first isolation side is as shown in Figure 2 , where fc1 to fcn respectively represent the spectra of signals Signal1 to SignalN output after passing through the first transmitting circuit. It can be seen that the spectra output by the channels corresponding to each first transmitting unit are different and will not interfere with each other. The second isolation side also includes second receiving units (RX1-2 to RX n -2) corresponding in number and frequency to the first isolation side, constructing multiple receiving channels; after the second millimeter-wave antenna receives a signal sent by the first millimeter-wave antenna, it will be divided into multiple signal sources for output through the second distribution unit; since each second receiving unit corresponds to a receiving channel with a different frequency, the multiple signal sources output by the second distribution unit will be received and processed by their respective corresponding second receiving units, and then signals (Signal1 to SignalN) with different frequencies will be output.

[0051] In this embodiment, each of the first transmitting units on the first isolation side has three optional internal structural compositions. Specifically as follows:

[0052] In a specific implementation manner of this embodiment, such asFigure 3 As shown in (a), each first transmitting unit in the first isolation side includes a voltage-controlled oscillator (VCO), and the voltage-controlled oscillator (VCO) is connected to the first coupling unit. After injecting the signal Signal, the voltage-controlled oscillator (VCO) generates a modulated signal Modulated Signal.

[0053] In another specific implementation manner of this embodiment, as Figure 3 As shown in (b), each first transmitting unit in the first isolation side includes a voltage-controlled oscillator (VCO) and a power amplifier (PA) connected in sequence, and the power amplifier (PA) is connected to the first coupling unit. The voltage-controlled oscillator (VCO) generates a carrier carrier to the power amplifier (PA), and then the signal Signal and the carrier carrier are modulated into a modulated signal Modulated Signal through the power amplifier (PA). Here, the power amplifier (PA) can also be replaced by a buffer buffer to achieve the function of the modulated signal.

[0054] In yet another specific implementation manner of this embodiment, as Figure 3 As shown in (c), each first transmitting unit in the first isolation side includes a voltage-controlled oscillator (VCO), a mixer (Mixer) and a power amplifier (PA) connected in sequence, and the power amplifier (PA) is connected to the first coupling unit. Here, the voltage-controlled oscillator (VCO) generates a carrier carrier to the mixer (Mixer), and after the mixer (Mixer) mixes the carrier carrier and the signal Signal, a modulated signal ModulatedSignal is generated through the power amplifier (PA).

[0055] In this embodiment, each second receiving unit in the second isolation side also has two optional internal structure compositions. Specifically as follows:

[0056] In some specific implementation manners of this embodiment, as Figure 4 As shown in (a), each second receiving unit in the second isolation side includes a band-pass filter (BPF) and an envelope detector (ENV, i.e., Envelope Detector) connected in sequence; the envelope detector is connected to the second distribution unit. Here, after the band-pass filter (BPF) of the second receiving unit receives a modulated signal Modulated Signal with a corresponding frequency, it is demodulated by the envelope detector (ENV) to restore the signal Signal. Optionally, in some specific application scenarios where it is not necessary to completely restore the signal but only to detect the presence or absence of a signal (for example, when an abnormality occurs in the high-voltage area circuit of a gate driver and a signal is reported to the low-voltage area controller), the envelope detector (ENV) can be replaced by a power detector (Power Detector, abbreviated as PD).

[0057] In some further specific embodiments of this embodiment, such as Figure 4 as shown in (b), each second receiving unit in the second isolation side includes a band - pass filter and a mixer connected in sequence; the mixer is connected to the second distribution unit. Here, after the band - pass filter BPF of the second receiving unit receives the modulated signal Modulated Signal with the corresponding frequency, it is demodulated by the mixer to restore the signal Signal.

[0058] As can be seen from the above, the first transmitting unit in this embodiment has three optional internal structure compositions. Correspondingly, the second receiving unit also has two optional internal structure compositions. Therefore, through permutation and combination, the multi - signal - channel millimeter - wave digital isolator of this embodiment has 6 optional internal structures, which can better meet the needs of different application scenarios or different users and is more practical.

[0059] In this embodiment, each band - pass filter BPF1 to BPF in the second receiving unit N corresponds to a different frequency respectively; at the same time, the envelope - detector has the characteristic that it will only receive signals of the corresponding frequency, and signals of other frequencies will be filtered out. Therefore, each second receiving unit will only receive and process signals of the corresponding frequency, and signals of different frequencies will not interfere with each other.

[0060] As a preferred specific example of this embodiment, such as Figure 5 shown, the first transmitting units TX1 - 1 to TX n -1 respectively include corresponding voltage - controlled oscillators VCO1 to VCO N , to construct different transmission channels, and the carrier frequency of each transmission channel is different; the second receiving units RX1 - 2 to RX n -2 respectively include corresponding band - pass filters BPF1 to BPF N and envelope - detectors ENV1 to ENV N . Different signals Signal1 to SignalN respectively pass through different transmission channels, that is, the first transmitting units TX1 - 1 to TX n -1 are transmitted to the first coupling unit 12 - 1 and coupled into one signal; then it is transmitted to the second millimeter - wave antenna 21 in a millimeter - wave wireless isolation manner through the first millimeter - wave antenna 11; then it is sent to the second distribution unit 22 - 1, and then by the second receiving units RX1 - 2 to RX n -2, the band - pass filters BPF1 to BPF N respectively receive signals of the corresponding frequency, and are detected by the envelope - detectors ENV1 to ENV NDemodulation and restoration yield corresponding signals, namely signals Signal1 to SignalN.

[0061] In some specific embodiments of this embodiment, the first coupling unit is a power combiner; the second distribution unit is a power divider. Here, the first coupling unit is used to combine multiple signal sources into one signal source for output. The second distribution unit is used to divide one signal source into multiple signal sources for output.

[0062] In some other specific embodiments of this embodiment, the multi-signal-channel millimeter-wave digital isolator is in the form of an integrated chip, which realizes miniaturization, is convenient for connection, and is more competitive in the market.

[0063] Please refer to Figure 6 and Figure 7 , Embodiment 2 of the present utility model is as follows:

[0064] On the basis of Embodiment 1, this embodiment is further expanded to provide a full-duplex multi-signal-channel millimeter-wave digital isolator with a two-way communication function, that is, a feedback function.

[0065] On the basis of Embodiment 1, in this embodiment, both the first millimeter-wave antenna and the second millimeter-wave antenna are configured as full-duplex millimeter-wave antennas, that is, they simultaneously have a millimeter-wave transmitting antenna and a millimeter-wave receiving antenna.

[0066] Meanwhile, as Figure 6 shown, the first isolation side 10 further includes a first receiving circuit 13; the second isolation side 20 further includes a second transmitting circuit 23. That is to say, the first isolation side 10 simultaneously includes a first transmitting circuit 12 and a first receiving circuit 13; the second isolation side 20 simultaneously includes a second receiving circuit 22 and a second transmitting circuit 23. Thus, both the first isolation side and the second isolation side have the ability to transmit and receive signals.

[0067] Specifically, as Figure 6 shown, the first receiving circuit 13 includes a first distribution unit 12-2 and more than two first receiving units (as Figure 6 shown, specifically including RXa-1, RXb-1, RXc-1... RXm-1); each first receiving unit is respectively connected to the first distribution unit 12-2, and the first distribution unit 12-2 is connected to the first millimeter-wave antenna 11;

[0068] The second transmitting circuit 23 includes a second coupling unit 22-2 and more than two second transmitting units (as Figure 6as shown, including TXa-2, TXb-2, TXc-2…TXm-2); each second transmitting unit is respectively connected to the second coupling unit 22-2, and the second coupling unit 22-2 is connected to the second millimeter-wave antenna 21.

[0069] In this embodiment, the second transmitting circuit on the second isolation side constructs multiple transmitting channels through a plurality of second transmitting units (TXa-2 to TXm-2), and signals of different frequencies (such as Signala to Signalm) are respectively transmitted through different transmitting channels; then, the signals of each transmitting channel are uniformly sent to the second coupling unit, which combines multiple signal sources into one signal for output, and the output signal is fed into the second millimeter-wave antenna, and is isolated and transmitted to the first millimeter-wave antenna based on millimeter-wave wireless communication technology through the second millimeter-wave antenna. Correspondingly, the first isolation side also includes first receiving units (RXa-1 to RXm-1) corresponding to the second isolation side in terms of quantity and frequency, constructing multiple receiving channels; after the first millimeter-wave antenna receives a signal sent by the second millimeter-wave antenna, it will be divided into multiple signal sources for output Signala to Signalm through the first distribution unit. Since each first receiving unit corresponds to a receiving channel of a different frequency, the multiple signal sources output by the first distribution unit will be received and processed by their respective corresponding first receiving units and finally output. Here, combined with the communication interaction process of transmitting multiple signals from the first isolation side to the second isolation side described in Embodiment 1, this embodiment can achieve two-way communication interaction between the first isolation side and the second isolation side. That is to say, the multi-signal-channel millimeter-wave digital isolator provided in this embodiment is a full-duplex multi-signal-channel millimeter-wave digital isolator, with the function of full-duplex multi-channel high-speed isolation transmission.

[0070] In some specific implementation manners of this embodiment, optionally, the internal structure of each second transmitting unit in the second isolation side is as Figure 3 (a) shown, that is, each includes a voltage-controlled oscillator VCO, and the voltage-controlled oscillator VCO is connected to the second coupling unit. Optionally, the internal structure of each second transmitting unit in the second isolation side is as Figure 3 (b) shown, and each second transmitting unit in the second isolation side includes a voltage-controlled oscillator VCO and a power amplifier PA connected in sequence, and the power amplifier PA is connected to the second coupling unit. Optionally, the internal structure of each second transmitting unit in the second isolation side is as Figure 3 (c) shown, that is, each includes a voltage-controlled oscillator VCO, a mixer Mixer and a power amplifier PA connected in sequence, and the power amplifier PA is connected to the second coupling unit.

[0071] In a preferred specific implementation manner, as Figure 7As shown, the second transmitting units TXa-2 to TXm-2 respectively correspond to voltage-controlled oscillators VCOa to VCO m .

[0072] In some further specific embodiments of this embodiment, optionally, as Figure 4 (a) shows, each first receiving unit in the first isolation side includes a band-pass filter BPF and an envelope detector ENV connected in sequence, and the envelope detector is connected to the first distribution unit. Optionally, as Figure 4 (b) shows, each first receiving unit in the first isolation side includes a band-pass filter and a mixer connected in sequence; the mixer is connected to the first distribution unit.

[0073] As can be seen from the above, the second transmitting units in this embodiment have three optional internal structures. Correspondingly, the first receiving units also have two optional internal structures. Therefore, through permutation and combination, the newly added communication channels in the multi-signal-channel millimeter-wave digital isolator provided in this embodiment also have 6 optional internal structures. Therefore, the full-duplex multi-signal-channel millimeter-wave digital isolator provided in this embodiment has 12 optional internal structures, which can better meet the needs of different application scenarios or different users and is more practical.

[0074] Here, the band-pass filters BPFa to BPF m correspond to different frequencies respectively; at the same time, the envelope detector has the characteristic that it will only receive signals of the corresponding frequency, and signals of other frequencies will be filtered out. Therefore, each first receiving unit will only receive and process signals of the corresponding frequency, and signals of different frequencies will not interfere with each other.

[0075] In a preferred specific embodiment, as Figure 7 shown, the first receiving units RXa-1 to RXm-1 respectively correspond to the band-pass filters BPFa to BPF m and the envelope detectors ENVa to ENV m .

[0076] In some specific embodiments of this embodiment, the second coupling unit is a power combiner; the first distribution unit is a power splitter. Here, the second coupling unit is used to combine multiple signal sources into one signal source for output. The first distribution unit is used to divide one signal source into multiple signal sources for output.

[0077] In some further specific embodiments of this embodiment, the full-duplex multi-signal-channel millimeter-wave digital isolator is in the form of an integrated chip, which not only realizes miniaturization, but also is convenient for connection and more competitive in the market.

[0078] Embodiment III

[0079] Based on Embodiment I or Embodiment II, this embodiment provides a multi-signal-channel millimeter-wave isolation system, including the multi-signal-channel millimeter-wave digital isolator described in Embodiment I or Embodiment II above. The structure of the isolator will not be repeated here. For details, please refer to the descriptions in Embodiment I or Embodiment II.

[0080] In the multi-signal-channel millimeter-wave isolation system provided in this embodiment, on both sides of the isolated communication, that is, between the first isolation side and the second isolation side, multiple signal sources with different frequencies are supported to be simultaneously transmitted from the first isolation side to the second isolation side at high speed based on millimeter-wave isolation.

[0081] According to different requirements, the multi-signal-channel millimeter-wave isolation system provided in this embodiment can also be equipped with a full-duplex multi-signal-channel millimeter-wave digital isolator to achieve that on both sides of the isolated communication, that is, between the first isolation side and the second isolation side, multiple signal sources with different frequencies can be transmitted from either side to the other side at high speed based on millimeter-wave isolation. That is to say, a two-way communication function is provided between the first isolation side and the second isolation side.

[0082] In summary, for the multi-signal-channel millimeter-wave digital isolator and isolation system provided by the present utility model, unidirectional or bidirectional millimeter-wave wireless isolation transmission of multi-signal channels can be achieved between the isolated two sides. Moreover, based on millimeter-wave communication technology, higher transmission speed, higher bandwidth, and higher isolation degree are also provided between the isolated two sides.

[0083] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in the relevant technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A multi-signal channel millimeter-wave digital isolator, characterized in that, It includes a first isolation side and a second isolation side; the first isolation side includes a first millimeter-wave antenna and a first transmitting circuit; the second isolation side includes a second millimeter-wave antenna and a second receiving circuit; the first millimeter-wave antenna and the second millimeter-wave antenna are wirelessly connected based on millimeter-wave communication; The first transmitting circuit includes a first coupling unit and more than two first transmitting units; the more than two first transmitting units are respectively connected to the first coupling unit, and the first coupling unit is connected to the first millimeter-wave antenna; The second receiving circuit includes a second distribution unit and more than two second receiving units; the more than two second receiving units are respectively connected to the second distribution unit, and the second distribution unit is connected to the second millimeter-wave antenna.

2. The multi-signal-channel millimeter-wave digital isolator according to claim 1, characterized in that The first coupling unit is a power combiner; the second distribution unit is a power divider.

3. The multi-signal-channel millimeter-wave digital isolator according to claim 1, wherein The first transmitting unit includes a voltage-controlled oscillator; the voltage-controlled oscillator is connected to the first coupling unit.

4. The multi-signal-channel millimeter-wave digital isolator according to claim 1, wherein The first transmitting unit includes a voltage-controlled oscillator and a power amplifier connected in sequence; the power amplifier is connected to the first coupling unit.

5. The multi-signal-channel millimeter-wave digital isolator according to claim 1, wherein The first transmitting unit includes a voltage-controlled oscillator, a mixer, and a power amplifier connected in sequence; the power amplifier is connected to the first coupling unit.

6. The multi-signal-channel millimeter-wave digital isolator according to claim 1, wherein The second receiving unit includes a band-pass filter and an envelope detector connected in sequence; the envelope detector is connected to the second distribution unit.

7. The multi-signal-channel millimeter-wave digital isolator according to claim 1, wherein The second receiving unit includes a band-pass filter and a mixer connected in sequence; the mixer of the second receiving unit is connected to the second distribution unit.

8. The multi-signal-channel millimeter-wave digital isolator according to claim 1, wherein Both the first millimeter-wave antenna and the second millimeter-wave antenna are full-duplex millimeter-wave antennas; The first isolation side further includes a first receiving circuit; the second isolation side further includes a second transmitting circuit; The first receiving circuit includes a first distribution unit and more than two first receiving units; the more than two first receiving units are respectively connected to the first distribution unit, and the first distribution unit is connected to the first millimeter-wave antenna; The second transmitting circuit includes a second coupling unit and more than two second transmitting units; the more than two second transmitting units are respectively connected to the second coupling unit, and the second coupling unit is connected to the second millimeter-wave antenna.

9. The multi-signal channel millimeter-wave digital isolator according to claim 8, characterized in that, The second coupling unit is a power combiner; the first distribution unit is a power divider.

10. The multi-signal-channel millimeter-wave digital isolator according to claim 9, characterized in that, The second transmitting unit includes a voltage-controlled oscillator, or includes a voltage-controlled oscillator and a power amplifier connected in sequence, or includes a voltage-controlled oscillator, a mixer, and a power amplifier connected in sequence; The first receiving unit includes a band-pass filter and an envelope detector connected in sequence, or includes a band-pass filter and a mixer connected in sequence.

11. The multi-signal-channel millimeter-wave digital isolator according to claim 1, characterized in that, The multi-signal-channel millimeter-wave digital isolator is a multi-signal-channel millimeter-wave digital isolator chip.

12. A multi-signal-channel millimeter-wave isolation system, characterized in that, It includes the multi-signal-channel millimeter-wave digital isolator according to any one of claims 1 to 11 above.

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