CN117459353B - Digital isolator, application circuit thereof and isolated communication method - Google Patents
Digital isolator, application circuit thereof and isolated communication method Download PDFInfo
- Publication number
- CN117459353B CN117459353B CN202311775419.XA CN202311775419A CN117459353B CN 117459353 B CN117459353 B CN 117459353B CN 202311775419 A CN202311775419 A CN 202311775419A CN 117459353 B CN117459353 B CN 117459353B
- Authority
- CN
- China
- Prior art keywords
- millimeter wave
- circuit
- isolated
- antenna
- transmitter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000006854 communication Effects 0.000 title claims abstract description 40
- 238000004891 communication Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims description 17
- 230000000694 effects Effects 0.000 claims description 15
- 238000005086 pumping Methods 0.000 claims description 14
- 230000002159 abnormal effect Effects 0.000 claims description 7
- 238000013461 design Methods 0.000 abstract description 11
- 230000007175 bidirectional communication Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 20
- 238000002955 isolation Methods 0.000 description 9
- 238000004590 computer program Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 230000001808 coupling effect Effects 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 102220103881 rs201490575 Human genes 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 102220008303 rs4904 Human genes 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0264—Arrangements for coupling to transmission lines
- H04L25/0266—Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/0175—Coupling arrangements; Interface arrangements
- H03K19/017545—Coupling arrangements; Impedance matching circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/44—Transmit/receive switching
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Transmitters (AREA)
Abstract
The invention provides a digital isolator, an application circuit thereof and an isolated communication method, wherein the digital isolator comprises a first millimeter wave circuit and a second millimeter wave circuit; the first millimeter wave circuit comprises a first millimeter wave antenna, a first millimeter wave transmitter and a power detector; the second millimeter wave circuit comprises a second millimeter wave antenna, a second millimeter wave receiver, a second millimeter wave transmitter and a change-over switch; the first millimeter wave transmitter and the power detector are respectively connected with the first millimeter wave antenna; the second millimeter wave antenna is respectively connected with the second millimeter wave transmitter and the second millimeter wave receiver through the change-over switch; the change-over switch is also connected with a second isolated circuit corresponding to the second millimeter wave circuit. The invention can realize the bidirectional communication between the two isolated ends by only utilizing a single channel formed by a group of millimeter wave antennas, and can reduce the design complexity and the area requirement.
Description
Technical Field
The invention relates to the technical field of isolation communication, in particular to a digital isolator, an application circuit thereof and an isolation communication method.
Background
Existing digital isolators and their application circuits (e.g., half-bridge driver, DC/DC inverter, ADC or DAC, etc.) all require at least two sets of TX-RX and two sets of devices for coupling to achieve signal return.
As shown in fig. 1 (a) -1 (b), a schematic diagram of a typical digital isolator applied to a half-bridge driver is shown; as shown in fig. 2, the structure of the novel millimeter wave isolator applied to the half-bridge driver is schematically shown. The working principle of the two isolators can be summarized as follows: in a daily working state, the left low-voltage area circuit transmits a control signal to the right high-voltage area circuit, the right high-voltage area circuit detects voltage or time sequence state and sends a pulse signal to the left low-voltage area circuit to report when abnormality is detected so as to prompt the abnormality; the left low voltage area circuit adjusts the signal transmitted to the right high voltage area circuit or turns off the transmission according to the pulse signal. It can be seen that both the conventional typical digital isolator and the new digital isolator today require two channels to be configured to achieve signal return.
The two-channel configuration of the digital isolator has the problems of large area requirement and complex design.
Disclosure of Invention
The present invention aims to solve at least to some extent one of the technical problems in the above-described technology. Therefore, the invention aims to provide a digital isolator, an application circuit thereof and an isolated communication method, which can reduce design complexity and reduce the area required by an isolated device on the premise of realizing two-way communication between two isolated ends.
To achieve the above object, an embodiment of a first aspect of the present invention provides a digital isolator, including a first millimeter wave circuit and a second millimeter wave circuit; the first millimeter wave circuit comprises a first millimeter wave antenna, a first millimeter wave transmitter and a power detector; the second millimeter wave circuit comprises a second millimeter wave antenna, a second millimeter wave receiver, a second millimeter wave transmitter and a change-over switch;
the first millimeter wave transmitter and the power detector are respectively connected with the first millimeter wave antenna; the second millimeter wave antenna is respectively connected with the second millimeter wave transmitter and the second millimeter wave receiver through the change-over switch; the change-over switch is also connected with a second isolated circuit corresponding to the second millimeter wave circuit;
the switch is configured to switch from original communication with the second millimeter wave receiver to communication with the second millimeter wave transmitter when the second millimeter wave circuit transmits the second signal to the first millimeter wave circuit;
the power detector is configured to detect whether or not power transmitted from the first millimeter wave circuit to the second millimeter wave circuit becomes low due to a near-field pumping effect occurring between the first millimeter wave antenna and the second millimeter wave antenna.
According to the digital isolator provided by the embodiment of the invention, through utilizing the near-field pumping effect of the millimeter wave antenna and the switching communication of the switch between the receiver and the transmitter, the two-way communication between the two isolated ends can be realized by only utilizing a single channel formed by a group of millimeter wave antennas. Compared with the prior art that the digital isolator is required to be provided with two groups of antennas to form a double channel so as to realize two-way communication, the invention not only reduces design complexity, but also saves area requirements.
In addition, the digital isolator according to the embodiment of the present invention may further have the following additional technical features:
optionally, the distance between the first millimeter wave antenna and the second millimeter wave antenna is between 2-3 mm.
Optionally, the change-over switch includes a switch a and a switch b; the second millimeter wave antenna is connected with the second millimeter wave transmitter through the switch a; the second millimeter wave antenna is connected with the second millimeter wave receiver via the switch b;
the switch a is configured to be turned on when the first millimeter wave circuit sends a first signal to the second millimeter wave circuit, and turned off when the second millimeter wave circuit sends a second signal to the first millimeter wave circuit;
the switch b is configured to be turned on when the second millimeter wave circuit transmits the second signal to the first millimeter wave circuit, and turned off when the first millimeter wave circuit transmits the first signal to the second millimeter wave circuit.
In order to achieve the above object, a second aspect of the present invention provides an application circuit of a digital isolator, including the digital isolator; the circuit also comprises a first isolated circuit and a second isolated circuit; the first millimeter wave transmitter and the power detector are respectively connected with the first isolated circuit; the second millimeter wave receiver and the second millimeter wave transmitter are respectively connected with the second isolated circuit.
In order to achieve the above object, a second aspect of the present invention provides an application circuit of a digital isolator, including the digital isolator; the circuit also comprises a first isolated circuit and a second isolated circuit; the first millimeter wave transmitter and the power detector are respectively connected with the first isolated circuit; the second millimeter wave receiver and the second millimeter wave transmitter are respectively connected with the second isolated circuit.
In addition, the application circuit of the digital isolator according to the embodiment of the present invention may further have the following additional technical features:
optionally, the first isolated circuit is a low voltage circuit; the second isolated circuit is a high voltage circuit.
Optionally, the first isolated circuit is a low voltage half-bridge circuit; the second isolated circuit is a high-voltage half-bridge circuit;
the low-voltage half-bridge circuit comprises a low-voltage half-bridge controller; the high-voltage half-bridge circuit comprises a high-voltage half-bridge controller;
the first millimeter wave transmitter and the power detector are respectively connected with the low-voltage half-bridge controller; the second millimeter wave receiver, the second millimeter wave transmitter and the change-over switch are respectively connected with the high-voltage half-bridge controller.
In order to achieve the above object, a second aspect of the present invention provides an isolated communication method, based on the above digital isolator, comprising:
when the first millimeter wave circuit transmits a first signal to the second millimeter wave circuit, a first millimeter wave transmitter of the first millimeter wave circuit transmits the first signal to the second millimeter wave circuit via the first millimeter wave antenna; after receiving the first signal, a second millimeter wave antenna of a second millimeter wave circuit transmits the first information to a second millimeter wave receiver through the change-over switch;
when the second millimeter wave circuit sends a second signal to the first millimeter wave circuit, the change-over switch is originally communicated with the second millimeter wave receiver and is communicated with the second millimeter wave transmitter; the second millimeter wave transmitter transmits a second signal to the second millimeter wave antenna; the power emitted by the first millimeter wave transmitter is lowered based on a near-field pumping effect between the first millimeter wave antenna and the second millimeter wave antenna; after the power detector of the first millimeter wave circuit detects that the power sent by the first millimeter wave transmitter is low, the first isolated circuit corresponding to the first millimeter wave circuit is prompted.
According to the isolation communication method provided by the embodiment of the invention, based on the digital isolator realized by utilizing the near-field pumping effect of the millimeter wave antennas, the bidirectional communication between the first isolated circuit and the second isolated circuit can be realized by only utilizing a single channel formed by a group of millimeter wave antennas. Compared with the isolation communication method in the prior art, the two-way communication can be realized by using two groups of antennas to form a two-way communication, and the two-way communication between the isolated two ends is realized by utilizing a single channel.
In addition, the application circuit of the digital isolator according to the embodiment of the present invention may further have the following additional technical features:
optionally, the first isolated circuit is a low voltage circuit; the second isolated circuit is a high voltage circuit.
Optionally, the first isolated circuit is a low voltage half-bridge circuit; the second isolated circuit is a high-voltage half-bridge circuit; the low-voltage half-bridge circuit comprises a low-voltage half-bridge controller; the high-voltage half-bridge circuit comprises a high-voltage half-bridge controller; and controlling the change-over switch through the high-voltage half-bridge controller.
Optionally, the prompting the first isolated circuit corresponding to the first millimeter wave circuit includes:
the power detector prompts the low-voltage half-bridge controller that the high-voltage half-bridge circuit is abnormal;
the low-voltage half-bridge controller controls to turn off the first millimeter wave transmitter or adjust the transmission power of the first millimeter wave transmitter.
Drawings
FIGS. 1 (a) -1 (b) are schematic diagrams of two digital isolators typical of the prior art applied to half-bridge drivers;
fig. 2 is a schematic structural diagram of a novel millimeter wave isolator applied to a half-bridge driver in the prior art;
fig. 3 is a schematic structural diagram of a digital isolator according to an embodiment of the present invention;
fig. 4 is a diagram showing an example of the configuration of the first millimeter wave antenna and the second millimeter wave antenna in the embodiment of the present invention;
fig. 5 is a schematic diagram of S-parameter curves between the first millimeter wave antenna and the second millimeter wave antenna in the configuration example of fig. 4;
fig. 6 is a schematic diagram of a power curve transmitted by the first millimeter wave transmitter when the second millimeter wave antenna is used as the transmitting antenna in the configuration example of fig. 4;
fig. 7 is a schematic diagram of a digital isolator according to a second embodiment of the present invention;
fig. 8 is a schematic structural diagram of an application circuit of a digital isolator according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
By utilizing the near-field pumping effect of the millimeter wave antenna, the invention realizes that the isolator only needs to be configured with a single channel and can still realize the bidirectional communication between the two isolated ends. Compared with the prior art, the two-channel communication device has the advantages that two-channel communication can be realized, and the design complexity and the area requirement of the isolator are obviously reduced.
In order that the above-described aspects may be better understood, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
Fig. 3 is a schematic structural diagram of a digital isolator according to an embodiment of the present invention. As shown in fig. 3, an embodiment of the present invention provides a digital isolator that includes a first millimeter wave circuit 10 and a second millimeter wave circuit 20; the first millimeter wave circuit 10 includes a first millimeter wave antenna 11, a first millimeter wave transmitter TX12, and a power detector 13; the second millimeter wave circuit 20 comprises a second millimeter wave antenna 21, a second millimeter wave receiver RX22, a second millimeter wave transmitter TX23 and a change-over switch 24;
the first millimeter wave transmitter TX12 and the power detector 13 are respectively connected to the first millimeter wave antenna 11 and also respectively connected to the first isolated circuit 101.
The second millimeter wave antenna 21 is connected to the second millimeter wave transmitter TX23 and the second millimeter wave receiver RX22 via the changeover switch 24, respectively; the switch 24 is also connected to a second isolated circuit 201 corresponding to the second millimeter wave circuit 20;
the switching switch is configured to be switched from original communication with the second millimeter wave receiver to communication with the second millimeter wave transmitter when the second millimeter wave circuit transmits a second signal to the first millimeter wave circuit;
the power detector is configured to detect whether or not power transmitted from the first millimeter wave circuit to the second millimeter wave circuit becomes low due to a near-field pumping effect occurring between the first millimeter wave antenna and the second millimeter wave antenna.
The working principle of the digital isolator in this embodiment is as follows:
in a normal transmission state, a second isolated circuit corresponding to the second millimeter wave circuit controls the second millimeter wave antenna to be communicated with the second millimeter wave receiver through the change-over switch so that the second millimeter wave antenna is used as a receiving antenna; an input end in a first isolated circuit corresponding to the first millimeter wave circuit transmits a first signal (pulse modulation signal, such as Pulse Width Modulation, PWM) to a first millimeter wave transmitter of the first millimeter wave circuit; the first millimeter wave transmitter carrier modulates to high frequency for transmission with the first millimeter wave antenna; the second millimeter wave antenna is used as a receiving antenna, and receives the first signal transmitted by the first millimeter wave antenna and then leads the first signal to a second millimeter wave receiver communicated with the first millimeter wave antenna.
When the second millimeter wave circuit needs to transmit back a signal to the first millimeter wave circuit, the second isolated circuit controls the change-over switch to be communicated with the second millimeter wave transmitter from original communication with the second millimeter wave receiver, so that the first millimeter wave antenna is changed into a transmitting antenna from a receiving antenna; the simple pulse signal sent by the second millimeter wave transmitter is transmitted to the second millimeter wave antenna for transmission through the change-over switch; at this time, the second millimeter wave antenna and the first millimeter wave antenna are simultaneously used as transmitting antennas and both transmit signals, and the distance between the two antennas is relatively short, so that a strong pushing effect of near field between the first millimeter wave antenna and the second millimeter wave antenna occurs, and the transmission power of the first millimeter wave circuit is smaller than that in a normal transmission state; after the power detector of the first millimeter wave circuit detects the change, the first isolated circuit corresponding to the first millimeter wave circuit is prompted, so that the purpose that the second millimeter wave circuit returns a signal to the first millimeter wave circuit is achieved.
Here, the situation that the second millimeter wave circuit needs to transmit the feedback signal to the first millimeter wave circuit is usually that the second isolated circuit is abnormal and the feedback signal prompts, for example, the second isolated circuit is overheated, the receiving signal of the second millimeter wave circuit is lost, the output signal of the first millimeter wave circuit is abnormal, the high-voltage device is abnormally operated, and the like. The second isolated circuit transmits a feedback signal to the first isolated circuit for prompting operation, and after the first isolated circuit receives the prompt, the first millimeter wave transmitter is controlled to be turned off or the transmission power of the first millimeter wave transmitter is regulated.
The distance configuration requirement between the millimeter wave antennas is different from the distance configuration of other antennas (the distance between the millimeter wave antennas is usually required to be 2-3mm, and the distance between the other antennas is far), so that the distance requirement of the pumping effect of the near field between the antennas can be just met. Therefore, by fully utilizing the near-field pumping effect of the antenna and the switching coordination of the change-over switch, the two-way communication between the two isolated ends can be realized by only utilizing a single channel formed by a group of millimeter wave antennas (namely the first millimeter wave antenna and the second millimeter wave antenna); and meanwhile, the configuration of the first millimeter wave receiver and a control circuit thereof can be omitted. That is, the digital isolator of the present embodiment can omit the configuration of a group of millimeter wave antennas, a receiver and a control circuit thereof, so that the design complexity and the area requirement are reduced, and the digital isolator has a good application prospect.
In some implementations of this embodiment, the first isolated circuit and the second isolated circuit may be any two circuits that are required to be communicatively isolated. The most common is communication isolation between high and low voltage circuits. The first isolated circuit is a low-voltage circuit, and the second isolated circuit is a high-voltage circuit. The method can be particularly applied to the devices such as a half-bridge driver, a DC/DC inverter, an ADC or a DAC and the like for carrying out safe and reliable communication isolation between high voltage and low voltage.
Hereinafter, the application of the first millimeter wave antenna and the second millimeter wave antenna based on the generated inter-antenna near-field pumping effect will be described in detail with reference to specific experimental data.
Fig. 4 is a diagram showing an example of the configuration of the first millimeter wave antenna and the second millimeter wave antenna in the present embodiment. An example spacing of the first millimeter wave antenna and the second millimeter wave antenna in the figure is 3mm.
Fig. 5 is a schematic diagram of S-parameter curves between the first millimeter wave antenna and the second millimeter wave antenna in the configuration example of fig. 4. Wherein S11 is the reflection coefficient (reflection coefficient) of the first millimeter wave antenna in the low-voltage region, and S22 is the reflection coefficient when the second millimeter wave antenna in the high-voltage region is used as the receiving antenna. As can be seen from fig. 5, the first millimeter wave antenna and the second millimeter wave antenna are both well matched (less than-10 dB, i.e., more than 90% of the energy can be transmitted) around 62.8 GHz. In the figure, S21 is a transmission coefficient (transmission coefficient) between the first millimeter wave antenna and the second millimeter wave antenna when the second millimeter wave antenna in the high voltage region is used as the transmitting antenna, and is a ratio of energy received by the second millimeter wave antenna to energy transmitted by the first millimeter wave antenna, so that a larger S21 indicates a larger energy received by the second millimeter wave antenna and a larger energy transmitted by the first millimeter wave antenna, and vice versa. S21 may also be expressed as the mutual coupling between the first millimeter wave antenna and the second millimeter wave antenna, that is, the larger S21, the stronger the coupling between the two antennas, and vice versa. As can be seen, the antenna group of the example configuration of fig. 4 has S21 of about-19.6 dB around 62.8 GHz.
It should be specifically noted that, S21/S12< -40dB of the far-field antenna group (the distance between the antennas of the existing non-millimeter wave antenna group is far), that is, S21< -40dB and S12< -40dB, where S21 and S12 correspond to the same antenna, that is, the second millimeter wave antenna, so that there is no mutual coupling between the antenna groups; however, in the embodiment, the first millimeter wave antenna and the second millimeter wave antenna are used as the near field antenna group, and S21/S12= minus 20dB, that is S21= minus 20dB and S12= minus 20dB, so that mutual coupling effect exists. In addition, in this embodiment, the antenna group formed by the first millimeter wave antenna and the second millimeter wave antenna is usually a transceiver (TX and RX), and at this time, the mutual coupling effect of the near field antennas (i.e., the near field pumping effect) has no influence on the normal transmission of the antenna group; however, the antenna groups are all transmitting antennas, and the mutual coupling of the near field antennas affects the antenna groups. The embodiment of the invention utilizes the near-field antenna coupling effect to realize the signal return between the isolated double ends.
As shown in fig. 6, a schematic diagram of a power curve transmitted by the first millimeter wave transmitter when the second millimeter wave antenna is used as the transmitting antenna in the configuration example of fig. 4. As can be seen from fig. 6, in the normal transmission mode, i.e. when the second millimeter wave antenna is used as the receiving antenna, the power of-3 dBm transmitted by the first millimeter wave transmitter is 62.8GHz (corresponding to the solid line in the figure); when in the backhaul mode, i.e., the second millimeter wave antenna is used as the transmitting antenna, the first millimeter wave transmitter transmits-3.14 dBm of power at 62.8GHz (corresponding to the dashed line in the figure). It can be seen that the first millimeter wave transmitter has a transmission power difference of 0.14dBm in the two modes, and the power detector in the low voltage region detects the difference of 0.14dBm to know whether the high voltage region is normal (see return as abnormal).
In addition, it should be noted that the power detector in the existing isolator is used for detecting the specific value of the power transmitted by the transmitter; in the embodiment of the invention, the power detector is used for detecting whether the power transmitted by the transmitter is low, specifically detecting the power phase difference of two modes, and judging whether to send prompt information to the control circuit according to the power phase difference. The power detector of the embodiments of the present invention thus functions substantially differently from existing power detectors.
In some implementations of the present embodiment, as shown in fig. 7, the switch 24 specifically includes a switch a and a switch b; the second millimeter wave antenna is connected with the second millimeter wave transmitter through the switch a; the second millimeter wave antenna is connected with the second millimeter wave receiver via the switch b;
wherein the switch a is configured to be turned on when the first millimeter wave circuit transmits a first signal to the second millimeter wave circuit, and turned off when the second millimeter wave circuit transmits a second signal to the first millimeter wave circuit;
the switch b is configured to be turned on when the second millimeter wave circuit transmits the second signal to the first millimeter wave circuit, and turned off when the first millimeter wave circuit transmits the first signal to the second millimeter wave circuit.
Here, the changeover Switch is embodied as two independent switches Switch a and Switch b to realize accurate control of changeover communication of the second millimeter wave receiver and the second millimeter wave transmitter.
The working principle of the specific embodiment is as follows:
in a normal transmission state, the second isolated circuit controls the switch a to be turned on and the switch b to be turned off; a first millimeter wave transmitter of the first millimeter wave circuit transmitting a first signal to the second millimeter wave circuit via the first millimeter wave antenna; a second millimeter wave antenna of the second millimeter wave circuit receives the first signal and then transmits the first signal to a second millimeter wave receiver;
when the second millimeter wave circuit has a requirement for returning a signal to the first millimeter wave circuit, the second isolated circuit controls the switch b to be turned on, the switch a to be turned off, and the second millimeter wave transmitter of the second millimeter wave circuit transmits a second signal to the second millimeter wave antenna to be transmitted; meanwhile, the first millimeter wave antenna still transmits the first signal normally; therefore, a near-field pumping effect occurs between the first millimeter wave antenna and the second millimeter wave antenna, so that the power emitted by the first millimeter wave transmitter is low; after the power detector of the first millimeter wave circuit detects that the power sent by the first millimeter wave transmitter is low, the first isolated circuit corresponding to the first millimeter wave circuit is prompted, and therefore the purpose that the second millimeter wave circuit returns signals to the first millimeter wave circuit is achieved.
Fig. 8 is a schematic structural diagram of an application circuit of a digital isolator according to an embodiment of the present invention. The embodiment of the invention is based on the embodiment, and further provides an application circuit of the digital isolator, which comprises the digital isolator in the embodiment, and meanwhile, the application circuit of the digital isolator comprises a first isolated circuit and a second isolated circuit; the first millimeter wave transmitter and the power detector are respectively connected with the first isolated circuit; the second millimeter wave receiver and the second millimeter wave transmitter are respectively connected with the second isolated circuit.
The embodiment can realize double-end isolation communication between the first isolated circuit and the second isolated circuit based on the digital isolator in the previous embodiment, and can simultaneously reduce design complexity and occupation area on the structure of the digital isolator; contributing to a reduction in design complexity and area reduction of the application circuit as a whole.
In some implementations of this embodiment, when the digital isolator described in the previous embodiment is applied to a half-bridge driving design, the first isolated circuit is a low-voltage half-bridge circuit; the second isolated circuit is a high-voltage half-bridge circuit; the low-voltage half-bridge circuit comprises a low-voltage half-bridge controller; the high voltage half-bridge circuit includes a high voltage half-bridge controller. As shown in fig. 8, the millimeter wave transmitter TX of the low-voltage region L The Power Detector is connected with the low-voltage half-bridge controller respectively; millimeter wave receiver RX in high-voltage region H Millimeter wave transmitter TX in high voltage region H The switching switches are respectively connected with the high-voltage half-bridge controller.
The design of the half-bridge driver using the millimeter wave digital isolator provided by the embodiment can make the isolator only need to be configured with a single channel, and can still realize the exception of the high-voltage region after returning under the condition of omitting the configuration of the low-voltage receiver and the control circuit thereof. Compared with the existing half-bridge driver, the dual-channel type half-bridge driver has the advantages that the dual-channel type half-bridge driver can realize abnormal return of a high voltage area, and design complexity and area requirements of the whole circuit of the half-bridge driver are obviously reduced.
The embodiment of the invention also provides an isolated communication method, which is based on the digital isolator described in the previous embodiment, and comprises the following steps:
when the first millimeter wave circuit transmits a first signal to the second millimeter wave circuit, a first millimeter wave transmitter of the first millimeter wave circuit transmits the first signal to the second millimeter wave circuit via the first millimeter wave antenna; after receiving the first signal, a second millimeter wave antenna of a second millimeter wave circuit transmits the first information to a second millimeter wave receiver through the change-over switch;
when the second millimeter wave circuit sends a second signal to the first millimeter wave circuit, the change-over switch is originally communicated with the second millimeter wave receiver and is communicated with the second millimeter wave transmitter; the second millimeter wave transmitter transmits a second signal to the second millimeter wave antenna; the power emitted by the first millimeter wave transmitter is lowered based on a near-field pumping effect between the first millimeter wave antenna and the second millimeter wave antenna; after the power detector of the first millimeter wave circuit detects that the power sent by the first millimeter wave transmitter is low, the first isolated circuit corresponding to the first millimeter wave circuit is prompted.
In this embodiment, the first isolated circuit is typically a low voltage circuit; the second isolated circuit is typically a high voltage circuit.
In some implementations of this embodiment, the first isolated circuit is a low voltage half-bridge circuit; the second isolated circuit is a high-voltage half-bridge circuit; the low-voltage half-bridge circuit comprises a low-voltage half-bridge controller; the high-voltage half-bridge circuit comprises a high-voltage half-bridge controller; and controlling the change-over switch through the high-voltage half-bridge controller.
In some specific implementations of this embodiment, the prompting the first isolated circuit corresponding to the first millimeter wave circuit specifically includes:
the power detector prompts the low-voltage half-bridge controller that the high-voltage half-bridge circuit is abnormal;
the low-voltage half-bridge controller controls to turn off the first millimeter wave transmitter or adjust the transmission power of the first millimeter wave transmitter.
The isolation communication method of the present embodiment, based on the digital isolator provided in the previous embodiment, achieves bidirectional communication between the first isolated circuit and the second isolated circuit by only using a single channel formed by a group of millimeter wave antennas. Compared with the isolation communication method in the prior art, the two-way communication can be realized by using two groups of antennas to form a two-way communication, and the two-way communication between the isolated two ends is realized by utilizing a single channel. The specific structural composition of the digital isolator and its connection relationship will not be repeated here, and the details will be described in the previous embodiment.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It should be noted that in the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms should not be understood as necessarily being directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. A digital isolator comprising a first millimeter wave circuit and a second millimeter wave circuit; the first millimeter wave circuit comprises a first millimeter wave antenna, a first millimeter wave transmitter and a power detector; the second millimeter wave circuit comprises a second millimeter wave antenna, a second millimeter wave receiver, a second millimeter wave transmitter and a change-over switch;
the first millimeter wave transmitter and the power detector are respectively connected with the first millimeter wave antenna; the second millimeter wave antenna is respectively connected with the second millimeter wave transmitter and the second millimeter wave receiver through the change-over switch; the change-over switch is also connected with a second isolated circuit corresponding to the second millimeter wave circuit;
the switch is configured to switch the communication originally with the second millimeter wave receiver to the communication with the second millimeter wave transmitter under the control of the second isolated circuit when the second millimeter wave circuit transmits the second signal to the first millimeter wave circuit;
the power detector is configured to detect whether the power sent by the first millimeter wave circuit to the second millimeter wave circuit is reduced due to the near-field pumping effect generated between the first millimeter wave antenna and the second millimeter wave antenna, and if so, the first isolated circuit corresponding to the first millimeter wave circuit is prompted;
the first isolated circuit is configured to control to turn off the first millimeter wave transmitter or adjust the transmission power of the first millimeter wave transmitter after receiving the prompt.
2. The digital isolator of claim 1, wherein a distance between the first millimeter wave antenna and the second millimeter wave antenna is between 2-3 mm.
3. The digital isolator of claim 1, wherein the change-over switch comprises a switch a and a switch b; the second millimeter wave antenna is connected with the second millimeter wave transmitter through the switch a; the second millimeter wave antenna is connected with the second millimeter wave receiver via the switch b;
the switch a is configured to be turned on when the first millimeter wave circuit sends a first signal to the second millimeter wave circuit, and turned off when the second millimeter wave circuit sends a second signal to the first millimeter wave circuit;
the switch b is configured to be turned on when the second millimeter wave circuit transmits the second signal to the first millimeter wave circuit, and turned off when the first millimeter wave circuit transmits the first signal to the second millimeter wave circuit.
4. A digital isolator application circuit comprising the digital isolator of any one of claims 1-3; the circuit also comprises a first isolated circuit and a second isolated circuit; the first millimeter wave transmitter and the power detector are respectively connected with the first isolated circuit; the second millimeter wave receiver and the second millimeter wave transmitter are respectively connected with the second isolated circuit.
5. The application circuit of the digital isolator as claimed in claim 4, wherein the first isolated circuit is a low voltage circuit; the second isolated circuit is a high voltage circuit.
6. The application circuit of the digital isolator as claimed in claim 4, wherein the first isolated circuit is a low voltage half-bridge circuit; the second isolated circuit is a high-voltage half-bridge circuit;
the low-voltage half-bridge circuit comprises a low-voltage half-bridge controller; the high-voltage half-bridge circuit comprises a high-voltage half-bridge controller;
the first millimeter wave transmitter and the power detector are respectively connected with the low-voltage half-bridge controller; the second millimeter wave receiver, the second millimeter wave transmitter and the change-over switch are respectively connected with the high-voltage half-bridge controller.
7. A method of isolated communication, based on a digital isolator as claimed in any one of claims 1 to 3, comprising:
when the first millimeter wave circuit transmits a first signal to the second millimeter wave circuit, a first millimeter wave transmitter of the first millimeter wave circuit transmits the first signal to the second millimeter wave circuit via the first millimeter wave antenna; after receiving the first signal, a second millimeter wave antenna of a second millimeter wave circuit transmits the first signal to a second millimeter wave receiver through the change-over switch;
when the second millimeter wave circuit sends a second signal to the first millimeter wave circuit, the change-over switch is originally communicated with the second millimeter wave receiver and is communicated with the second millimeter wave transmitter; the second millimeter wave transmitter transmits a second signal to the second millimeter wave antenna; the power emitted by the first millimeter wave transmitter is lowered based on a near-field pumping effect between the first millimeter wave antenna and the second millimeter wave antenna; after the power detector of the first millimeter wave circuit detects that the power sent by the first millimeter wave transmitter is low, the first isolated circuit corresponding to the first millimeter wave circuit is prompted.
8. The isolated communication method of claim 7, wherein the first isolated circuit is a low voltage circuit; the second isolated circuit is a high voltage circuit.
9. The isolated communication method of claim 7, wherein the first isolated circuit is a low voltage half-bridge circuit; the second isolated circuit is a high-voltage half-bridge circuit; the low-voltage half-bridge circuit comprises a low-voltage half-bridge controller; the high-voltage half-bridge circuit comprises a high-voltage half-bridge controller; and controlling the change-over switch through the high-voltage half-bridge controller.
10. The isolated communication method of claim 9, wherein the prompting the first isolated circuit corresponding to the first millimeter wave circuit comprises:
the power detector prompts the low-voltage half-bridge controller that the high-voltage half-bridge circuit is abnormal;
the low-voltage half-bridge controller controls to turn off the first millimeter wave transmitter or adjust the transmission power of the first millimeter wave transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311775419.XA CN117459353B (en) | 2023-12-22 | 2023-12-22 | Digital isolator, application circuit thereof and isolated communication method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311775419.XA CN117459353B (en) | 2023-12-22 | 2023-12-22 | Digital isolator, application circuit thereof and isolated communication method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117459353A CN117459353A (en) | 2024-01-26 |
| CN117459353B true CN117459353B (en) | 2024-03-29 |
Family
ID=89591490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311775419.XA Active CN117459353B (en) | 2023-12-22 | 2023-12-22 | Digital isolator, application circuit thereof and isolated communication method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117459353B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005086352A (en) * | 2003-09-05 | 2005-03-31 | Kyocera Corp | Millimeter wave transmitter-receiver |
| KR100722738B1 (en) * | 2006-01-24 | 2007-05-30 | 포스데이타 주식회사 | Oscillation apparatus and method for tdd in wireless communication system |
| CN105372647A (en) * | 2014-08-27 | 2016-03-02 | 北京顶亮科技有限公司 | Millimeter wave range finder system and method based on active phased array transceiver component |
| CN105530015A (en) * | 2014-10-20 | 2016-04-27 | 英飞凌科技股份有限公司 | System and Method for a Radio Frequency Filter |
| CN108111185A (en) * | 2016-11-23 | 2018-06-01 | 英飞凌科技股份有限公司 | For the emitter/receiver module of millimeter wave 5G MIMO communication systems |
| CN109358516A (en) * | 2018-10-09 | 2019-02-19 | 芜湖博高光电科技股份有限公司 | A kind of intelligent electric power utilization system based on millimeter wave life detection and use method for electrically |
| CN218412928U (en) * | 2022-07-26 | 2023-01-31 | 西安天安电子科技有限公司 | Millimeter wave receiving and transmitting front end of improved active human body security inspection imaging system |
| WO2023024902A1 (en) * | 2021-08-23 | 2023-03-02 | 深圳市塞防科技有限公司 | Vehicle-mounted millimeter-wave radar, and transmitting antenna system, receiving antenna system and antenna system therefor |
| CN218587172U (en) * | 2022-08-08 | 2023-03-07 | 广州极飞科技股份有限公司 | Active antenna and communication equipment |
| CN116633371A (en) * | 2023-05-25 | 2023-08-22 | 北京京东方技术开发有限公司 | Millimeter wave transmitter, receiver, transceiver and electronic equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10931033B2 (en) * | 2019-01-23 | 2021-02-23 | Qorvo Us, Inc. | Multi-polarization millimeter wave (mmWave) transmitter/receiver architecture with shared power amplifiers |
-
2023
- 2023-12-22 CN CN202311775419.XA patent/CN117459353B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005086352A (en) * | 2003-09-05 | 2005-03-31 | Kyocera Corp | Millimeter wave transmitter-receiver |
| KR100722738B1 (en) * | 2006-01-24 | 2007-05-30 | 포스데이타 주식회사 | Oscillation apparatus and method for tdd in wireless communication system |
| CN105372647A (en) * | 2014-08-27 | 2016-03-02 | 北京顶亮科技有限公司 | Millimeter wave range finder system and method based on active phased array transceiver component |
| CN105530015A (en) * | 2014-10-20 | 2016-04-27 | 英飞凌科技股份有限公司 | System and Method for a Radio Frequency Filter |
| CN108111185A (en) * | 2016-11-23 | 2018-06-01 | 英飞凌科技股份有限公司 | For the emitter/receiver module of millimeter wave 5G MIMO communication systems |
| CN109358516A (en) * | 2018-10-09 | 2019-02-19 | 芜湖博高光电科技股份有限公司 | A kind of intelligent electric power utilization system based on millimeter wave life detection and use method for electrically |
| WO2023024902A1 (en) * | 2021-08-23 | 2023-03-02 | 深圳市塞防科技有限公司 | Vehicle-mounted millimeter-wave radar, and transmitting antenna system, receiving antenna system and antenna system therefor |
| CN218412928U (en) * | 2022-07-26 | 2023-01-31 | 西安天安电子科技有限公司 | Millimeter wave receiving and transmitting front end of improved active human body security inspection imaging system |
| CN218587172U (en) * | 2022-08-08 | 2023-03-07 | 广州极飞科技股份有限公司 | Active antenna and communication equipment |
| CN116633371A (en) * | 2023-05-25 | 2023-08-22 | 北京京东方技术开发有限公司 | Millimeter wave transmitter, receiver, transceiver and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117459353A (en) | 2024-01-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101010844B1 (en) | Transmitter-receiver | |
| US9160395B2 (en) | Method and terminal device for automatically tuning impedance matching of multi-frequency band antenna | |
| KR100724726B1 (en) | Apparatus for transmit and receive switching in a time-division duplexing wireless network | |
| US20130049481A1 (en) | Transmitter and receiver | |
| WO2014010575A1 (en) | Front-end circuit, impedance adjustment method | |
| US8929843B2 (en) | Antenna power coupler having a variable coupling factor | |
| CN102461007A (en) | Method for controlling transmission/reception timing of base station antenna for tdd wireless communications and base station antenna using same | |
| CN109802693B (en) | Electronic equipment and radio frequency signal transceiving method | |
| EP2475104A1 (en) | Duplexer malfunction detecting method and apparatus | |
| CN101867465A (en) | The sending and receiving methods of sending/receiving system | |
| CN107889120B (en) | Indoor coverage system for improving TDD-LTE uplink interference immunity | |
| CN117459353B (en) | Digital isolator, application circuit thereof and isolated communication method | |
| KR20120013138A (en) | Amplifier supporting multi mode and amplifying method thereof | |
| CN112119598A (en) | Antenna unit, transmission system and method for operating an antenna unit | |
| CN108092677B (en) | Transmitting assembly | |
| CN102598560B (en) | Wireless communication system and control method | |
| CN203872199U (en) | Self-interference elimination circuit of wireless combination system | |
| CN101056463A (en) | A method for uplink and downlink time division switching management in the TD-SCDMA RF receiving and transmission module | |
| CN102571152A (en) | Control device of transmitted power of power line carrier communication | |
| JP5029484B2 (en) | Wireless communication device | |
| CN208190653U (en) | signal receiving and transmitting system | |
| JPH03270515A (en) | Transmission output control system in hot standby system | |
| CN113746490B (en) | Radio frequency structure and electronic equipment | |
| WO2016185871A1 (en) | Wireless communication device | |
| CN214756948U (en) | Anti-interference PON gateway |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |