Millimeter-wave isolation circuits and isolators with multiple receiver links

By employing a millimeter-wave isolation circuit with multiple receiving links in high-speed isolated communication, and utilizing an antenna array composed of multiple dipole antennas connected end to end, synchronous reception of multiple pulse signals is achieved. This solves the problems of high power consumption and cost in existing technologies, and improves signal quality and isolation transmission effect.

CN224458595UActive Publication Date: 2026-07-03DECO SEMICON(SHENZHEN) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DECO SEMICON(SHENZHEN) CO LTD
Filing Date
2025-08-11
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

In high-speed isolated communication, existing high-speed high-voltage digital isolators require independent channels to achieve the transmission of two pulse signals, which increases system power consumption and cost, and delay mismatch is difficult to correct, thus limiting the scope of application.

Method used

A millimeter-wave isolation circuit with multiple receiving links is adopted, and multiple dipole antennas are connected end to end to form a millimeter-wave receiving antenna array to achieve synchronous reception of multiple pulse signals. Multiple feed points are realized with a single structure, reducing system power consumption and cost.

Benefits of technology

It achieves high-power, high-efficiency, and high-quality reception of multiple signals, reduces delay matching between receiving links, lowers system power consumption and cost, and improves isolation transmission performance.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention provides a millimeter-wave isolation circuit and isolator with multiple receiving links. Its millimeter-wave receiving module includes two or more dipole antennas and receiving units connected one-to-one with each dipole antenna. Each dipole antenna and its corresponding receiving unit constitutes a receiving link. The two or more dipole antennas are arranged along their length, with the radiating elements of consecutive dipole antennas connected end-to-end, forming a millimeter-wave receiving antenna array. It is configured to receive the millimeter-wave signal through two or more receiving links and then output two or more identical pulse signals. This invention enables synchronous reception of multiple pulse signals based on a single structure, ensuring minimal time deviation at the receiving end and reducing system power consumption and cost.
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Description

Technical Field

[0001] This utility model relates to the field of digital isolator technology, specifically to a millimeter-wave isolation circuit and isolator with multiple receiving links. Background Technology

[0002] In high-speed isolated communication applications, such as high-power-density and high-efficiency isolated DC-DC (DCDC) power modules, inverters requiring high isolation voltage and high reliability, and highly automated testing equipment, the high-speed, high-voltage digital isolators used in these applications require two independent pulse signal isolation transmission channels to achieve differential signal isolation transmission. This not only increases system power consumption and cost, but also makes it difficult to correct the delay mismatch between the two independent channels, thus limiting its application scope. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a millimeter-wave isolation circuit and isolator with multiple receiving links, which can realize the synchronous reception of multiple pulse signals based on a single structure, ensure that the time deviation of each signal at the receiving end is extremely small, and reduce system power consumption and cost.

[0004] To solve the above-mentioned technical problems, the first technical solution adopted by this utility model is as follows:

[0005] A millimeter-wave isolation circuit with multiple receiving links includes a millimeter-wave transmitting module and a millimeter-wave receiving module;

[0006] The millimeter-wave receiving module includes two or more bipolar antennas and receiving units connected to each bipolar antenna in a one-to-one correspondence. A receiving link is formed by a bipolar antenna and its corresponding receiving unit. The two or more bipolar antennas are arranged along the length of the bipolar antennas, and the radiating elements of the two bipolar antennas are connected end to end to form a millimeter-wave receiving antenna array.

[0007] The millimeter-wave transmitting module is configured to transmit millimeter-wave signals through a single transmission link;

[0008] The millimeter-wave receiving module is configured to receive the millimeter-wave signal through two or more receiving links, and then output two or more identical pulse signals accordingly.

[0009] Optionally, the millimeter-wave transmitting module includes a transmitting link consisting of a dipole antenna and a corresponding transmitting unit connected thereto.

[0010] Optionally, the radiating elements of the two or more bipolar antennas are located on the same straight line.

[0011] Optionally, the millimeter-wave receiving module includes a first receiving link consisting of a first dipole antenna and its corresponding first receiving unit, and a second receiving link consisting of a second dipole antenna and its corresponding second receiving unit; wherein, the suspended end of one of the radiating elements of the first dipole antenna is connected to the suspended end of one of the radiating elements of the second dipole antenna.

[0012] The millimeter-wave receiving module is configured to receive the millimeter-wave signal through a first receiving link and a second receiving link respectively, and then output two identical pulse signals accordingly.

[0013] Optionally, the bipolar antenna in the millimeter-wave receiving module can be either an electric bipolar antenna or a magnetic bipolar antenna.

[0014] Optionally, the millimeter-wave receiving antenna array is a one-piece molded structure.

[0015] Optionally, the bipolar antenna in the millimeter-wave transmitting module is an electric bipolar antenna or a magnetic bipolar antenna.

[0016] Optionally, the straight-line distance between the dipole antenna in the millimeter-wave transmitting module and the millimeter-wave receiving antenna array is between 0.5mm and 1mm.

[0017] Optionally, the straight-line distance between the bipolar antenna in the millimeter-wave transmitting module and the millimeter-wave receiving antenna array is in the range of 0.5 mm.

[0018] Another technical solution provided by this utility model is:

[0019] A millimeter-wave isolator with multiple receiver links includes the millimeter-wave isolation circuit with multiple receiver links described above.

[0020] The beneficial effects of this invention are as follows: The millimeter-wave isolation circuit and millimeter-wave isolator provided by this invention have a millimeter-wave receiving module consisting of two or more dipole antennas and their corresponding receiving units forming a multi-path receiving link. Specifically, the two or more dipole antennas are arranged along the length of the dipole antennas, and the radiating elements of the two dipole antennas are connected end-to-end, thus forming a millimeter-wave receiving antenna array with a single antenna structure but multiple feed points. This enables higher power output and higher efficiency while ensuring signal quality. Applied to millimeter-wave isolated communication, it not only enables multi-path reception but also allows each receiving link to achieve high-power, high-efficiency, and high-quality millimeter-wave signal reception, greatly reducing delay matching between receiving links; thereby reducing system power consumption and cost while achieving good isolated transmission performance. Attached Figure Description

[0021] Figure 1This is a schematic diagram of an electric dipole antenna.

[0022] Figure 2 This is a schematic diagram of a magnetic dipole antenna.

[0023] Figure 3 A schematic diagram of the structure of a millimeter-wave receiving antenna array composed of multiple electrically bipolar antennas, provided for a specific implementation of Embodiment 1 of this utility model;

[0024] Figure 4 A schematic diagram of a millimeter-wave receiving antenna array composed of multiple magnetic dipole antennas is provided for a specific implementation of Embodiment 1 of this utility model.

[0025] Figure 5 A schematic diagram of the structure of a millimeter-wave isolation circuit with two receiving links provided in Embodiment 2 of this utility model;

[0026] Figure 6 A schematic diagram of a millimeter-wave isolation circuit with two receiving links provided for some specific embodiments of Embodiment 2 of this utility model;

[0027] Figure 7 A schematic diagram of a millimeter-wave isolation circuit with two receiving links provided for some specific embodiments of Embodiment 2 of this utility model;

[0028] Figure 8 A schematic diagram of a millimeter-wave isolation circuit with two receiving links provided for some specific embodiments of Embodiment 2 of this utility model;

[0029] Figure 9 A schematic diagram of the simulation results of the return loss (RL) of the millimeter-wave isolation circuit with two receiving links provided in Embodiment 2 of this utility model;

[0030] Figure 10 A schematic diagram of the time-domain simulation results of a millimeter-wave isolation circuit with two receiving links provided in Embodiment 2 of this utility model;

[0031] Figure 11 This is a schematic diagram of an EM model of an antenna-coupled millimeter-wave digital isolator provided for some specific embodiments of Embodiment 3 of this utility model. Detailed Implementation

[0032] 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.

[0033] The most crucial concept of this invention is that two or more bipolar antennas are arranged along the length of the bipolar antennas, and the radiating elements of the two bipolar antennas are connected end to end, thus forming a millimeter-wave receiving antenna array with a single antenna structure but multiple feed points.

[0034] A dipole antenna (also known as a bipolar antenna) is a basic symmetrical antenna consisting of two equal-length radiating elements connected by a central feed point.

[0035] like Figure 1 The image shows an electric dipole antenna. Theoretically, its length is half a wavelength, or 0.5λ. The blue dashed line in the diagram represents the current distribution, and the red dashed line represents the voltage distribution. The antenna is open at both ends, so the current is zero and the voltage is at its maximum; the antenna is short-circuited in the middle, so the current is at its maximum and the voltage is zero.

[0036] like Figure 2 The image shown is a magnetic dipole antenna. Because its structure is slotted, it also belongs to the category of slot antennas. Magnetic dipole antennas are a type of electric dipole antenna. Figure 1 The antennas shown are complementary, with a length of half a wavelength, i.e., 0.5λ. In the figure, the blue dashed line represents the current distribution, and the red dashed line represents the voltage distribution. The two ends of the antenna are short-circuited, so the current is at its maximum and the voltage is zero; the middle of the antenna is open-circuited, so the current is zero and the voltage is at its maximum.

[0037] Example 1

[0038] This embodiment provides a millimeter-wave isolation circuit with multiple receiving links, including a millimeter-wave transmitting module and a millimeter-wave receiving module.

[0039] The millimeter-wave receiving module includes two or more dipole antennas and an equal number of receiving units; one dipole antenna is connected to one receiving unit to form a receiving link. Specifically, the two or more dipole antennas are arranged along the length of the dipole antennas, with the central feed point located on the same side, and the radiating elements of the two dipole antennas are connected end to end, thereby forming a millimeter-wave receiving antenna array.

[0040] The millimeter-wave transmitting module is configured to transmit millimeter-wave signals through a single transmission link;

[0041] The millimeter-wave receiving module is configured to receive the millimeter-wave signal through two or more receiving links, and then output two or more identical pulse signals accordingly.

[0042] In this embodiment, one end of each receiving unit is specifically connected to the central feed point of the corresponding dipole antenna, and the other end serves as the output end of a receiving link.

[0043] In this embodiment, the dipole antennas in the millimeter-wave receiving module can all be either electric dipole antennas or magnetic dipole antennas. Preferably, regardless of whether they are electric or magnetic dipole antennas, they all adopt a horizontal antenna structure, that is, the two radiating elements of each dipole antenna are horizontally mounted, exhibiting horizontal radiation symmetry. This means that all the radiating elements of the two or more dipole antennas are located on the same straight line. Of course, in some specific scenarios, other modified structures such as inverted V antenna structures or angled dipole antenna structures can also be used.

[0044] In some specific embodiments, all the bipolar antennas in the millimeter-wave receiving module are electrically bipolar antennas. For example... Figure 3 As shown, multiple electrically conductive bipolar antennas are arranged in a straight line along the length of the antenna (which can also be understood as the length of the radiating element). The central feed points of all the electrically conductive bipolar antennas are located on the same side, and the tail of the radiating element of one electrically conductive bipolar antenna is connected to the head of the radiating element of the next electrically conductive bipolar antenna. This forms a millimeter-wave receiving antenna array with a single antenna structure but multiple feed points. Because a single electrically conductive bipolar antenna (such as...) Figure 1 As shown, since both ends of the antenna are open circuits, connecting multiple electrically polarized antennas end-to-end will not affect its current and voltage distribution. The total current of the millimeter-wave receiving antenna array is the sum of the currents on each individual antenna, therefore the total power is also the sum of the powers of each individual antenna. This can be understood as follows: Figure 3 The millimeter-wave receiving antenna array shown is composed of multiple electrically bipolar antennas connected end to end. It is a multi-feed antenna with a single antenna structure. Compared with the existing single-feed antenna, it can achieve higher power output and higher efficiency without affecting signal quality.

[0045] In other specific embodiments, all the bipolar antennas in the millimeter-wave receiving module are magnetic bipolar antennas. For example... Figure 4 As shown, multiple magnetic dipole antennas are arranged in a straight line along the length of the antenna (which can also be understood as the length of the radiating element), with all central feed points located on the same side. Furthermore, the tail of the radiating element of one magnetic dipole antenna is connected to the head of the radiating element of the next magnetic dipole antenna, thus forming a millimeter-wave receiving antenna array with a single antenna structure but multiple feed points. Because a single magnetic dipole antenna (such as...) Figure 2 As shown, the two ends of the antenna are short-circuited, so connecting multiple magnetic dipole antennas end-to-end will not affect its current and voltage distribution. The total voltage of the millimeter-wave receiving antenna array is the sum of the voltages on each individual antenna, therefore the total power is also the sum of the powers of each individual antenna. This can be understood as... Figure 4The millimeter-wave receiving antenna array shown is composed of multiple magnetic dipole antennas connected end to end. It is a multi-feed antenna with a single antenna structure. Compared with the existing single-feed antenna, it can achieve higher power output and higher efficiency without affecting signal quality.

[0046] In this embodiment, the millimeter-wave transmitting module includes one transmitting link. Specifically, it consists of a dipole antenna and a corresponding transmitting unit connected to it. It can be understood that the dipole antenna of the millimeter-wave transmitting module and the millimeter-wave receiving antenna array of the millimeter-wave receiving module are correspondingly positioned at a predetermined distance. Here, the dipole antenna serving as the transmitting antenna in the millimeter-wave transmitting module can be an electric dipole antenna or a magnetic dipole antenna.

[0047] In some specific embodiments, if the millimeter-wave receiving module uses an electrically conductive bipolar antenna, the corresponding millimeter-wave transmitting module also uses an electrically conductive bipolar antenna; if the millimeter-wave receiving module uses a magnetically conductive bipolar antenna, the corresponding millimeter-wave transmitting module also uses a magnetically conductive bipolar antenna. Here, the millimeter-wave transmitting module and the millimeter-wave receiving module use the same type of antenna, ensuring consistent antenna performance and further guaranteeing signal transmission efficiency and stability.

[0048] In some specific embodiments, the millimeter-wave receiving module uses an electrical dipole antenna, while the corresponding millimeter-wave transmitting module uses a magnetic dipole antenna; conversely, the millimeter-wave receiving module uses a magnetic dipole antenna, while the corresponding millimeter-wave transmitting module uses an electrical dipole antenna. It is understood that even if the millimeter-wave transmitting module and its corresponding millimeter-wave receiving module use different types of dipole antennas, it is still possible to receive the millimeter-wave signals transmitted by the millimeter-wave transmitting module through multiple receiving links configured in the millimeter-wave receiving module, and output multiple identical pulse signals accordingly.

[0049] In this embodiment, the millimeter-wave receiving antenna array is preferably a one-piece molded structure, which can reduce welds or splicing joints, resulting in higher overall strength and rigidity and greater stability; at the same time, it can also simplify the production and processing process and reduce costs.

[0050] In this embodiment, the straight-line distance between the dipole antenna serving as the transmitting antenna in the millimeter-wave transmitting module and the millimeter-wave receiving antenna array is preferably between 0.5mm and 1mm; more preferably 0.5mm. This distance range provides good isolation in antenna-coupled millimeter-wave digital isolation transmission.

[0051] As described above, the millimeter-wave isolation circuit provided in this embodiment uses a millimeter-wave receiving antenna array composed of multiple dipole antennas connected end-to-end. This allows for multiple feed points on a single structure, which can be allocated to multiple receiving units to achieve multi-channel reception of millimeter-wave signals. Furthermore, each receiving link can achieve high-power, high-efficiency, and high-quality millimeter-wave signal reception, significantly reducing delay matching between receiving links. Therefore, this not only reduces system power consumption and cost but also achieves excellent isolation transmission performance, which is beneficial for expanding the application of millimeter-wave isolation circuits.

[0052] Example 2

[0053] This embodiment further expands upon Embodiment 1, providing a millimeter-wave isolation circuit with two receiving links.

[0054] This embodiment provides a millimeter-wave isolation circuit with two receiving links, which differs from Embodiment 1 in that the millimeter-wave receiving module specifically includes two receiving links.

[0055] like Figure 5 As shown, in this embodiment, the millimeter-wave receiving antenna array of the millimeter-wave receiving module consists of two connected dipole antennas. Specifically, the suspended end of one radiating element of the first dipole antenna is connected to the suspended end of one radiating element of the second dipole antenna.

[0056] Specifically, the first dipole antenna and its corresponding first receiving unit RX1 constitute the first receiving link of the millimeter-wave receiving module, and its output terminal Output1 will output the first pulse signal; the second dipole antenna and its corresponding second receiving unit RX2 constitute the second receiving link of the millimeter-wave receiving module, and its output terminal Output2 will output the second pulse signal.

[0057] The millimeter-wave receiving module described in this embodiment is specifically configured to receive the millimeter-wave signal through a first receiving link and a second receiving link, and then output two identical first pulse signals and second pulse signals. Specifically, the first and second pulse signals output by the millimeter-wave receiving module are completely identical, and the delay deviation between them is extremely small (i.e., high synchronization accuracy), which can be understood as the differential output signals of the millimeter-wave receiving module.

[0058] like Figure 5 As shown, in this embodiment, the millimeter-wave transmitting module includes a transmitting link, specifically consisting of a dipole antenna and a transmitting unit TX connected to it, through which the pulse signal to be isolated and transmitted is input.

[0059] In this embodiment, the bipolar antennas in the millimeter-wave receiving module and the millimeter-wave transmitting module can be either electric bipolar antennas or magnetic bipolar antennas. Preferably, whether it is an electric bipolar antenna or a magnetic bipolar antenna, it adopts a horizontal antenna structure.

[0060] In some specific implementations, such as Figure 6 As shown, one transmission link of the millimeter-wave transmitting module consists of a magnetic dipole antenna and a transmitting unit TX; the two receiving links of the millimeter-wave receiving module consist of a first magnetic dipole antenna and a second magnetic dipole antenna connected by radiating dipoles, and corresponding first receiving units RX1 and second receiving units RX2. Here, the millimeter-wave receiving antenna array composed of the first and second magnetic dipole antennas will have two feed points, capable of receiving the same millimeter-wave signal respectively, and outputting the same pulse signal through their respective connected receiving units, thus realizing that the millimeter-wave receiving module has two receiving links.

[0061] It is understandable that if the magnetic bipolar antennas in the above-mentioned millimeter-wave transmitting module and its corresponding millimeter-wave receiving module are all replaced with electric bipolar antennas, the same technical effect can be achieved based on the same working principle.

[0062] In some specific implementations, such as Figure 7 As shown, one transmission link of the millimeter-wave transmitting module consists of an electric dipole antenna and a transmitting unit TX; the two receiving links of the millimeter-wave receiving module consist of a first magnetic dipole antenna and a second magnetic dipole antenna connected by radiating elements, and corresponding first receiving units RX1 and second receiving units RX2. Here, the millimeter-wave receiving antenna array composed of the first and second magnetic dipole antennas will have two feed points, capable of receiving the same millimeter-wave signal respectively, and outputting the same pulse signal through their respective connected receiving units, thus realizing that the millimeter-wave receiving module has two receiving links.

[0063] In some specific implementations, such as Figure 8 As shown, one transmission link of the millimeter-wave transmitting module consists of a magnetic dipole antenna and a transmitting unit TX; the two receiving links of the millimeter-wave receiving module consist of a first electric dipole antenna and a second electric dipole antenna connected by radiating elements, and corresponding first receiving units RX1 and second receiving units RX2. Here, the millimeter-wave receiving antenna array composed of the first and second electric dipole antennas will have two feed points, capable of receiving the same millimeter-wave signal respectively, and outputting the same pulse signal through their respective connected receiving units, thus realizing that the millimeter-wave receiving module has two receiving links.

[0064] Please see Figure 9The simulation results for the return loss (RL) of the millimeter-wave isolation circuit with two receiving links provided in this embodiment are shown. The red curve represents the return loss of the millimeter-wave transmitting antenna (corresponding to TX) in the millimeter-wave transmitting module; the blue curve represents the return loss of the first dipole antenna (corresponding to RX1) in the millimeter-wave receiving module; and the purple curve represents the return loss of the second dipole antenna (corresponding to RX2) in the millimeter-wave receiving module. It can be observed that the two dipole antennas in the millimeter-wave receiving module resonate at approximately 125 GHz, indicating that the millimeter-wave receiving module can achieve synchronous reception of dual millimeter-wave signals through the two dipole antennas at this frequency, with minimal delay deviation between the two receiving links (i.e., high synchronization accuracy). Furthermore, the operating frequency band also demonstrates that the millimeter-wave receiving module of this embodiment has ultra-high transmission rate and anti-interference capability, and provides excellent isolated transmission performance.

[0065] Please see Figure 10 The following are the time-domain simulation results of the millimeter-wave isolation circuit with two receiving links provided in this embodiment. In the simulation, (TX, mV) (red) corresponds to the differential output signal of the millimeter-wave transmitting module (TX module), with a carrier frequency of 125 GHz and a modulation signal frequency of 1 GHz. (RX1, mV) (blue) and (RX2, mV) (purple) are the differential output signals of the first receiving link (RX1) and the second receiving link (RX2) in the millimeter-wave transmitting module (RX module), respectively. It can be observed that the signal phase amplitudes of the first and second receiving links are consistent. This indicates that the first receiving unit RX1 and the second receiving unit RX2 in the millimeter-wave receiving module of this embodiment can receive the same pulse signal. Therefore, the millimeter-wave isolator used in the millimeter-wave isolation circuit of this embodiment can achieve high-precision signal synchronization reception without the need for a demultiplexer.

[0066] As described above, the millimeter-wave isolation circuit provided in this embodiment uses a single antenna for its millimeter-wave transmitting module and two feed points on a single-structure millimeter-wave receiving antenna array, allocated to two receiving units to achieve dual-path millimeter-wave signal reception. Furthermore, each receiving link can achieve high-power, high-efficiency, and high-quality millimeter-wave signal reception, significantly reducing delay matching between the two receiving links. Therefore, it not only reduces system power consumption and cost but also achieves excellent isolation transmission performance, which is beneficial for expanding the application of millimeter-wave isolation circuits.

[0067] Example 3

[0068] This embodiment is a further extension of any of the above embodiments, providing a millimeter-wave isolator with multiple receiving links.

[0069] The millimeter-wave isolator provided in this embodiment includes a millimeter-wave isolation circuit with multiple receiving links as described in any of the above embodiments. The specific structure of the millimeter-wave isolation circuit will not be repeated here; please refer to the descriptions in the above embodiments for details.

[0070] This embodiment provides a millimeter-wave isolator with multiple receiving links. Its millimeter-wave transmitting module uses a single transmitting link; its millimeter-wave receiving module utilizes a millimeter-wave receiving antenna array composed of multiple dipole antennas connected end-to-end. This allows for multiple feed points on a single structure, which can be allocated to multiple receiving units to achieve multi-channel reception of millimeter-wave signals. Furthermore, each receiving link can achieve high-power, high-efficiency, and high-quality millimeter-wave signal reception, significantly reducing delay matching between receiving links. Therefore, it not only reduces system power consumption and cost but also achieves excellent isolation transmission performance, which is beneficial for expanding the application scope of millimeter-wave isolation circuits. For example, it can be well applied to isolated DC-DC (direct current) circuits with high power density and high efficiency requirements. Current (DC-CDC) power modules, inverters requiring high isolation voltage and high reliability, and highly automated testing equipment, etc.

[0071] In some specific implementations, an EM model of an antenna-coupled millimeter-wave digital isolator is as follows: Figure 11 As shown, its millimeter-wave transmitting module has a single transmitting link, and the millimeter-wave transmitting antenna uses a dipole antenna; its millimeter-wave receiving module has a dual receiving link, and the millimeter-wave receiving antenna array has dual feed points; the distance between its millimeter-wave transmitting antenna and millimeter-wave receiving antenna array is 0.5-1mm, preferably 0.5mm. Based on the above structure and distance settings, the antenna-coupled millimeter-wave digital isolator will have good isolation transmission performance.

[0072] In summary, the millimeter-wave isolation circuit and isolator with multiple receiving links provided by this utility model can achieve synchronous reception of multiple pulse signals based on a single structure, ensuring that the time deviation of each signal at the receiving end is extremely small, thereby reducing system power consumption and cost.

[0073] 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 millimeter-wave isolation circuit with multiple receiving links, characterized in that, Includes a millimeter-wave transmitting module and a millimeter-wave receiving module; The millimeter-wave receiving module includes two or more bipolar antennas and receiving units connected to each bipolar antenna in a one-to-one correspondence. A receiving link is formed by a bipolar antenna and its corresponding receiving unit. The two or more bipolar antennas are arranged along the length of the bipolar antennas, and the radiating elements of the two bipolar antennas are connected end to end to form a millimeter-wave receiving antenna array. The millimeter-wave transmitting module is configured to transmit millimeter-wave signals through a single transmission link; The millimeter-wave receiving module is configured to receive the millimeter-wave signal through two or more receiving links, and then output two or more identical pulse signals accordingly.

2. The mmWave isolation circuit with multiple receive chains of claim 1, wherein, The millimeter-wave transmitting module includes a transmitting link consisting of a dipole antenna and a corresponding transmitting unit connected thereto.

3. The mmWave isolation circuit with multiple receive chains of claim 1, wherein, The radiating elements of the two or more bipolar antennas are located on the same straight line.

4. The mmWave isolation circuit with multiple receive chains of claim 1, wherein, The millimeter-wave receiving module includes a first receiving link consisting of a first bipolar antenna and its corresponding first receiving unit, and a second receiving link consisting of a second bipolar antenna and its corresponding second receiving unit; wherein, the suspended end of one of the radiating elements of the first bipolar antenna is connected to the suspended end of one of the radiating elements of the second bipolar antenna. The millimeter-wave receiving module is configured to receive the millimeter-wave signal through a first receiving link and a second receiving link respectively, and then output two identical pulse signals accordingly.

5. The mmWave isolation circuit with multiple receive chains of claim 1, wherein, The bipolar antenna in the millimeter-wave receiving module can be either an electric bipolar antenna or a magnetic bipolar antenna.

6. The mmWave isolation circuit with multiple receive chains of claim 1, wherein, The millimeter-wave receiving antenna array is a one-piece molded structure.

7. The mmWave isolation circuit with multiple receive chains of claim 2, wherein, The bipolar antenna in the millimeter-wave transmitting module is either an electric bipolar antenna or a magnetic bipolar antenna.

8. The mmWave isolation circuit with multiple receive chains of claim 7, wherein, The straight-line distance between the bipolar antenna in the millimeter-wave transmitting module and the millimeter-wave receiving antenna array is between 0.5 mm and 1 mm.

9. The mmWave isolation circuit with multiple receive chains of claim 8, wherein, The straight-line distance between the bipolar antenna in the millimeter-wave transmitting module and the millimeter-wave receiving antenna array is within 0.5 mm.

10. A millimeter wave isolator having multiple receive chains, comprising: The invention includes a millimeter-wave isolation circuit with multiple receiving links as described in any one of claims 1 to 9.