High-frequency millimeter wave digital isolator

Abstract

The utility model provides a high-frequency millimeter wave digital isolator which comprises an emitter, a receiver and an integrated isolation device, the integrated isolation device comprises a first millimeter wave antenna and a second millimeter wave antenna, and the first millimeter wave antenna and the second millimeter wave antenna are arranged on the same horizontal plane. An isolation belt is arranged between the first millimeter wave antenna and the second millimeter wave antenna, the first millimeter wave antenna is connected with the transmitter, the second millimeter wave antenna is connected with the receiver, signals are transmitted between the transmitter and the receiver through an integrated isolation device, and the receiver comprises a second matching network, an envelope detector and an output buffer. And the second millimeter wave antenna, the second matching network, the envelope detector and the output buffer are connected in sequence. And the receiver adopts the design of replacing the existing amplifier and demodulator with an envelope detector, so that the power consumption is effectively reduced. The two millimeter wave antennas are arranged in parallel on the same horizontal plane, so that the risk of open circuit caused by collapse can be effectively avoided. And the isolation efficiency and the transmission efficiency are maintained.

Description

TECHNICAL FIELD

[0001] The utility model relates to digital isolation technical field especially relates to a high frequency millimeter wave digital isolator. BACKGROUND

[0002] The traditional digital isolator usually adopts the inductor (for example, planar spiral inductor) design of closely arranging and mutually magnetically coupling, when the signal frequency transmitted between two circuits in different voltage domains increases, either the distance between inductors is kept small to keep transmission efficiency, but sacrifices isolation degree, or the distance is increased to keep isolation rate, but sacrifices transmission efficiency.

[0003] And, the existing magnetic couple is the up-down transmission structure, and under high voltage, the upper part may collapse to the lower part to cause the circuit break.

[0004] On the other hand, the receiver of the current digital isolator is in the form of amplifier plus demodulator, and the design of the amplifier is relatively power-consuming. UTILITY MODEL CONTENT

[0005] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the utility model is to provide a high frequency millimeter wave digital isolator which can keep isolation efficiency and transmission efficiency, will not cause the circuit break due to collapse, and can reduce power consumption.

[0006] In order to solve the above-mentioned technical problem, the utility model adopts the technical scheme that:

[0007] A high frequency millimeter wave digital isolator, comprising a transmitter, a receiver and an integrated isolation device, the integrated isolation device comprises a first millimeter wave antenna and a second millimeter wave antenna, the first millimeter wave antenna and the second millimeter wave antenna are arranged on the same horizontal plane, and an isolation band is arranged between the first millimeter wave antenna and the second millimeter wave antenna, the first millimeter wave antenna is connected with the transmitter, the second millimeter wave antenna is connected with the receiver, the transmitter and the receiver transmit signals through the integrated isolation device, the receiver comprises a second matching network, an envelope detector and an output buffer, the second millimeter wave antenna, the second matching network, the envelope detector and the output buffer are connected in sequence.

[0008] Optionally, the first millimeter wave antenna and the second millimeter wave antenna each comprise a first side edge and a second side edge arranged oppositely, the first side edge of the first millimeter wave antenna is connected with the transmitter, and the first side edge of the second millimeter wave antenna is connected with the receiver.

[0009] Optionally, the first side edge of the first millimeter wave antenna and the first side edge of the second millimeter wave antenna are located on the same side, and the second side edge of the first millimeter wave antenna and the second side edge of the second millimeter wave antenna are located on the same side.

[0010] Optionally, the first side of the first millimeter-wave antenna and the first side of the second millimeter-wave antenna are located on opposite sides, and the second side of the first millimeter-wave antenna and the second side of the second millimeter-wave antenna are arranged close to each other.

[0011] Optionally, the first millimeter-wave antenna and the second millimeter-wave antenna are symmetrical.

[0012] Optionally, the first side of the first millimeter-wave antenna and the first side of the second millimeter-wave antenna are located on opposite sides, and the second side of the first millimeter-wave antenna and the second side of the second millimeter-wave antenna are located on opposite sides.

[0013] Optionally, the first millimeter-wave antenna and the second millimeter-wave antenna are centrally symmetrical.

[0014] Optionally, the first millimeter-wave antenna and the second millimeter-wave antenna are arranged in parallel.

[0015] Optionally, the transmitter includes a first matching network, a voltage-controlled oscillator, an input buffer, and a mixer. The input of the mixer is connected to the voltage-controlled oscillator and the input buffer, respectively. The output of the mixer is connected to the input of the first matching network, and the output of the first matching network is connected to the first millimeter-wave antenna.

[0016] The advantages of this invention are as follows: By setting up an integrated isolation device for signal transmission between the transmitter and receiver, the integrated isolation device includes a first millimeter-wave antenna and a second millimeter-wave antenna disposed on the same horizontal plane and separated by an isolation strip. This ensures both isolation efficiency and transmission efficiency at high frequencies. Furthermore, because the first and second millimeter-wave antennas are disposed on the same horizontal plane, compared to the traditional vertical structure of a magnetic dipole, there is no risk of collapse leading to an open circuit. The receiver uses an envelope detector instead of the existing amplifier and demodulator design, effectively reducing power consumption. Attached Figure Description

[0017] Figure 1 The figure shown is a system schematic diagram of the high-frequency millimeter-wave digital isolator according to Embodiment 1 of this utility model;

[0018] Figure 2 The figure shown is a system schematic diagram of a high-frequency millimeter-wave digital isolator in an alternative embodiment of Embodiment 1 of this utility model;

[0019] Figure 3 The diagram shown is a schematic representation of the millimeter-wave antenna structure of the high-frequency millimeter-wave digital isolator according to Embodiment 2 of this utility model. Figure 1 ;

[0020] Figure 4 The diagram shown is a schematic representation of the millimeter-wave antenna structure of the high-frequency millimeter-wave digital isolator according to Embodiment 2 of this utility model. Figure 2 ;

[0021] Figure 5 Fig. 2 shows a structure diagram of a millimeter wave antenna connecting a transmitter and a receiver of the high-frequency millimeter wave digital isolator according to the second embodiment of the present application;

[0022] Figure 6 Fig. 3 shows a structure diagram of a millimeter wave antenna of the high-frequency millimeter wave digital isolator according to the third embodiment of the present application;

[0023] Figure 7 Fig. 4 shows a structure diagram of a millimeter wave antenna connecting a transmitter and a receiver of the high-frequency millimeter wave digital isolator according to the third embodiment of the present application;

[0024] Figure 8 Fig. 5 shows a structure diagram of a millimeter wave antenna of the high-frequency millimeter wave digital isolator according to the fourth embodiment of the present application;

[0025] Figure 9 Fig. 6 shows a structure diagram of a millimeter wave antenna connecting a transmitter and a receiver of the high-frequency millimeter wave digital isolator according to the fourth embodiment of the present application.

[0026] Label explanation:

[0027] 1, transmitter; 11, voltage-controlled oscillator; 12, input buffer; 13, mixer; 14, first matching network; 2, receiver; 21, second matching network; 22, envelope detector; 22', demodulator; 23, output buffer; 3, integrated isolation device; 31, first millimeter wave antenna; 32, second millimeter wave antenna; 33, isolation band. DETAILED DESCRIPTION

[0028] In order to more clearly understand the technical content, the purposes and effects of the present application, the present application is described in detail below in combination with specific embodiments and the accompanying drawings. It should be noted that the embodiments and the features in the embodiments of the present application can be combined with each other without conflict. In the following description, a large number of specific details are set forth in order to fully understand the present application, and the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0029] Please refer to Figure 1 Fig. 1 shows a structure diagram of a millimeter wave antenna connecting a transmitter and a receiver of the high-frequency millimeter wave digital isolator according to the first embodiment of the present application;

[0030] A high frequency millimeter wave digital isolator includes a transmitter 1, a receiver 2 and an integrated isolation device 3. Signals are transmitted between the transmitter 1 and the receiver 2 through the integrated isolation device 3. The integrated isolation device 3 provides galvanic isolation between the transmitter and the receiver, which can operate at different power supply voltages and / or different voltage domains.

[0031] The transmitter 1 can receive signals in various formats, such as on-off keying (OOK) modulated digital data. Specifically, the transmitter 1 includes a voltage-controlled oscillator 11, an input buffer 12, a mixer 13 and a first matching network 14, the inputs of the mixer 13 are connected to the voltage-controlled oscillator 11 and the input buffer 12 respectively, and the output of the mixer 13 is connected to the input of the first matching network 14. The received signals are provided to the mixer in time through the input buffer. The mixer is configured to tune the frequency of the received signals based at least in part on a clock signal (e.g., 30 GHz) from the voltage-controlled oscillator. The first matching network is configured to match the output impedance of the transmitter to the input impedance of the integrated isolation device, and to eliminate parasitic effects between the transmitter, the integrated isolation device, etc., and the quality factor of the first matching network is set to form a flat passband between the transmitter and the first millimeter wave antenna to reduce jitter.

[0032] The receiver 2 includes a second matching network 21, an envelope detector 22 and an output buffer 23, which are connected in sequence.

[0033] The integrated isolation device 3 includes a first millimeter wave antenna 31, a second millimeter wave antenna 32 and an isolation band 33, which is arranged between the first millimeter wave antenna 31 and the second millimeter wave antenna 32, the first millimeter wave antenna 31 is connected to the output of the first matching network 14, and the second millimeter wave antenna 32 is connected to the input of the second matching network 21. As Figure 1 shown.

[0034] In an alternative embodiment, the envelope detector 22 can be replaced by a demodulator 22' capable of producing the same function. As Figure 2 shown.

[0035] The first millimeter wave antenna 31 and the second millimeter wave antenna 32 are arranged on the same horizontal plane, and in a preferred embodiment, the first millimeter wave antenna 31 and the second millimeter wave antenna 32 are arranged in parallel.

[0036] Please refer to Figures 3-5 shown, the second embodiment of the utility model is:

[0037] A high-frequency millimeter wave digital isolator, which is different from the first embodiment, the first millimeter wave antenna 31 and the second millimeter wave antenna 32 each include a first side and a second side arranged oppositely, the first side of the first millimeter wave antenna 31 is connected with the transmitter 1 through a wire, and the first side of the second millimeter wave antenna 32 is connected with the receiver 2 through a wire. The first side of the first millimeter wave antenna 31 and the first side of the second millimeter wave antenna 32 are located on the same side, and the second side of the first millimeter wave antenna 31 and the second side of the second millimeter wave antenna 32 are located on the same side.

[0038] In a preferred embodiment, the first millimeter wave antenna 31 and the second millimeter wave antenna 32 are symmetrical.

[0039] Please refer to Figure 6 and Figure 7 , the third embodiment of the utility model is:

[0040] A high-frequency millimeter wave digital isolator, which is different from the second embodiment, the first side of the first millimeter wave antenna 31 and the first side of the second millimeter wave antenna 32 are located on opposite sides, and the second side of the first millimeter wave antenna 31 and the second side of the second millimeter wave antenna 32 are located on opposite sides.

[0041] In a preferred embodiment, the first millimeter wave antenna 31 and the second millimeter wave antenna 32 are symmetrical.

[0042] Please refer to Figure 8 and Figure 9 , the fourth embodiment of the utility model is:

[0043] A high-frequency millimeter wave digital isolator, which is different from the second and third embodiments, the first side of the first millimeter wave antenna 313 and the first side of the second millimeter wave antenna 32 are located on opposite sides, and the second side of the first millimeter wave antenna 31 and the second side of the second millimeter wave antenna 32 are arranged close to each other.

[0044] In a preferred embodiment, the first millimeter wave antenna 31 and the second millimeter wave antenna 32 are symmetrical.

[0045] It should be noted that the millimeter wave antenna structure listed in the above-mentioned second embodiment to the fourth embodiment is only some preferred antenna structure of the embodiment of the utility model, and the antenna structure protected by the utility model is not limited to the above-mentioned form.

[0046] In conclusion, the high-frequency millimeter wave digital isolator can ensure high transmission efficiency and high isolation efficiency at the same time. The envelope detector is used instead of the existing amplifier plus demodulator design for the receiver, which effectively reduces power consumption. The two millimeter wave antennas are arranged in parallel on the same horizontal plane, which can effectively avoid the risk of circuit breakage caused by collapse. Moreover, the two millimeter wave antennas utilize near-field transmission, so the loss is small, and can effectively resist the interference of common-mode voltage transient change.

[0047] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, so any modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model, which does not deviate from the technical scheme content of the utility model, still belongs to the range of the technical scheme of the utility model.

Claims

1. A high frequency millimeter wave digital isolator comprising a transmitter, a receiver and an integrated isolation device, the integrated isolation device comprising a first millimeter wave antenna and a second millimeter wave antenna, characterized in that, The first millimeter wave antenna and the second millimeter wave antenna are arranged on the same horizontal plane, and an isolation band is arranged between the first millimeter wave antenna and the second millimeter wave antenna, the first millimeter wave antenna is connected with the transmitter, the second millimeter wave antenna is connected with the receiver, the transmitter and the receiver transmit signals through the integrated isolation device, the receiver comprises a second matching network, an envelope detector and an output buffer, and the second millimeter wave antenna, the second matching network, the envelope detector and the output buffer are sequentially connected.

2. The high frequency millimeter wave digital isolator of claim 1, wherein, The first millimeter wave antenna and the second millimeter wave antenna each comprise first and second opposite sides, the first side of the first millimeter wave antenna is connected with the transmitter, and the first side of the second millimeter wave antenna is connected with the receiver.

3. The high frequency millimeter wave digital isolator of claim 2, wherein, The first side of the first millimeter wave antenna and the first side of the second millimeter wave antenna are located on the same side, and the second side of the first millimeter wave antenna and the second side of the second millimeter wave antenna are located on the same side.

4. The high frequency millimeter wave digital isolator of claim 2, wherein, The first side of the first millimeter wave antenna and the first side of the second millimeter wave antenna are located on opposite sides, and the second side of the first millimeter wave antenna and the second side of the second millimeter wave antenna are arranged close to each other.

5. The high frequency millimeter wave digital isolator of claim 3 or 4, wherein, The first millimeter wave antenna and the second millimeter wave antenna are symmetrical.

6. The high frequency millimeter wave digital isolator of claim 2, wherein, The first side of the first millimeter wave antenna and the first side of the second millimeter wave antenna are located on opposite sides, and the second side of the first millimeter wave antenna and the second side of the second millimeter wave antenna are located on opposite sides.

7. The high frequency millimeter wave digital isolator of claim 6, wherein, The first millimeter wave antenna and the second millimeter wave antenna are centrally symmetrical.

8. The high frequency millimeter wave digital isolator of claim 1, wherein, The first millimeter wave antenna and the second millimeter wave antenna are arranged in parallel.

9. The high frequency millimeter wave digital isolator of claim 1, wherein, The transmitter comprises a first matching network, a voltage-controlled oscillator, an input buffer and a mixer, the input ends of the mixer are connected with the voltage-controlled oscillator and the input buffer respectively, the output end of the mixer is connected with the input end of the first matching network, and the output end of the first matching network is connected with the first millimeter wave antenna.

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