CN117459085A - Transceiver device with self-calibration mechanism and self-calibration method thereof - Google Patents

Transceiver device with self-calibration mechanism and self-calibration method thereof Download PDF

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Publication number
CN117459085A
CN117459085A CN202210841245.1A CN202210841245A CN117459085A CN 117459085 A CN117459085 A CN 117459085A CN 202210841245 A CN202210841245 A CN 202210841245A CN 117459085 A CN117459085 A CN 117459085A
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CN
China
Prior art keywords
signal
path
self
circuit
transmission
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Pending
Application number
CN202210841245.1A
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Chinese (zh)
Inventor
杨弘源
林弘旻
黄永儒
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Realtek Semiconductor Corp
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Realtek Semiconductor Corp
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Priority to CN202210841245.1A priority Critical patent/CN117459085A/en
Publication of CN117459085A publication Critical patent/CN117459085A/en
Pending legal-status Critical Current

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    • 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
    • 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
    • H04B1/401—Circuits for selecting or indicating operating mode
    • 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
    • H04B1/50—Circuits using different frequencies for the two directions of communication
    • H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
    • 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
    • H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Transceivers (AREA)

Abstract

A transceiver device with a self-calibration mechanism, comprising: a signal transmission path, a signal reception path, a path switching circuit, a transceiver circuit, and a self-calibration circuit. The path switching circuit includes a switch to switch a connection relationship among the antenna, the signal transmission path, and the signal reception path. The transceiver circuit is electrically coupled to the signal transmission path and the signal receiving path. The self-calibration circuit enables the transceiver circuit to transmit a transmission signal to the path switching circuit through the signal transmission path, and receives a leakage signal generated by the transmission signal through the signal receiving path, so as to perform a self-calibration procedure on the transceiver circuit according to the transmission signal and the leakage signal, wherein the leakage signal has a leakage signal strength greater than a preset level.

Description

Transceiver device with self-calibration mechanism and self-calibration method thereof
Technical Field
The present invention relates to transceiver technology, and more particularly, to a transceiver device with a self-calibration mechanism and a self-calibration method thereof.
Background
Wireless network communication technology is a mainstream of network technology because it is not limited by physical connection lines. However, in transceivers for transmitting and receiving signals, circuit elements included often require self-calibration due to design imperfections or errors in the circuit fabrication method, such as IQ signal (in phase and quadrature components) mismatch, transmit signal distortion (distortion), local oscillator leakage (local oscillator leakage), or direct current offset (DC offset). To perform self-calibration, the transceiver often requires additional circuitry, which increases costs.
Disclosure of Invention
In view of the above-mentioned problems, the present invention is directed to a transceiver device with a self-calibration mechanism and a self-calibration method thereof, so as to improve the background art.
The present invention includes a transceiver (transmitter) device with a self-calibration mechanism, comprising: a signal transmission path, a signal reception path, a path switching circuit, a transceiver circuit, and a self-calibration circuit. The path switching circuit is electrically coupled to the signal transmission path and the signal receiving path at a first side, is electrically coupled to the antenna at a second side, and comprises a switch for switching the connection relationship among the antenna, the signal transmission path and the signal receiving path. The transceiver circuit is configured to be electrically coupled to the signal transmission path and the signal reception path. The self-calibration circuit is configured to enable the transceiver circuit to transmit a transmission signal to the path switching circuit through the signal transmission path and receive a leakage (leakage) signal generated by the transmission signal through the signal receiving path, so as to perform a self-calibration procedure on the transceiver circuit according to the transmission signal and the leakage signal, wherein the leakage signal has a leakage signal strength greater than a preset level.
The invention also includes a method of self-calibrating a transceiver device comprising: the path switching circuit is electrically coupled to the signal transmission path and the signal receiving path at a first side and electrically coupled to the antenna at a second side; transmitting a transmission signal to the path switching circuit through the signal transmission path by a transceiver circuit electrically coupled to the signal transmission path and the signal receiving path, and receiving a leakage signal generated by the transmission signal through the signal receiving path, wherein the leakage signal has a leakage signal strength greater than a preset level; and causing the self-calibration circuit to perform a self-calibration procedure on the transceiver circuit according to the transmission signal and the leakage signal.
The features, implementations and advantages associated with the present application are described in detail below with reference to the drawings and the preferred embodiments.
Drawings
FIG. 1A illustrates a block diagram of a transceiver device with a self-calibration mechanism in one embodiment of the invention;
FIG. 1B shows a block diagram of a transceiver device in another embodiment of the invention; and
fig. 2 shows a flow chart of a method of transceiver device self-calibration in one embodiment of the invention.
Detailed Description
The present invention provides a transceiver device with a self-calibration mechanism and a self-calibration method thereof, wherein a path switching circuit generates a leakage signal according to a transmission signal transmitted by a transceiver circuit, and the self-calibration circuit performs self-calibration according to the leakage signal, thereby achieving the purpose of self-calibration without additional circuitry.
Fig. 1A shows a block diagram of a transceiver device 100 with a self-calibration mechanism in one embodiment of the invention. The transceiver device 100 includes: a plurality of signal transmission paths TP 1 ～TP M Multiple signal receiving paths RP 1 ～RP N Path switching circuitry 110, transceiver circuitry 120, and self-calibration circuitry 130.
Signal transmission path TP 1 ～TP M Is M, signal receiving paths RP 1 ～RP N Is N, M and N are positive integers, and M and N are not necessarily equal. Signal transmission path TP 1 ～TP M Signal receiving path RP 1 ～RP N Each corresponding to a signalFrequency bands. In one embodiment, at least part of the signal transmission path TP 1 ～TP M Signal receiving path RP 1 ～RP N The filters FR are provided respectively.
The path switching circuit 110 is electrically coupled to the signal transmission path TP at a first side 1 ～TP M Signal receiving path RP 1 ～RP N And is electrically coupled to the antenna ANT at the second side. The path switching circuit 110 is a single pole multiple throw (single pole multiple throw) circuit in this embodiment, and includes a switch 140 for switching the antenna ANT and the signal transmission path TP 1 ～TP M Signal receiving path RP 1 ～RP N Connection relation between the two.
The transceiver circuit 120 is electrically coupled to the signal transmission path TP 1 ～TP M Signal receiving path RP 1 ～RP N 。
In one embodiment, transceiver circuitry 120 may include at least one transmit circuit (not shown), and the transmit circuit may include, for example, but not limited to, digital signal processing circuitry, digital-to-analog conversion circuitry, filter circuitry, and mixer circuitry (not shown) to process signals to be transmitted to the outside in a sequence in the low frequency, intermediate frequency to high frequency range.
Also, the transceiver circuit 120 may include at least one receiving circuit (not shown), and the receiving circuit may include, for example, but not limited to, a mixer circuit, a filter circuit, an analog-to-digital conversion circuit, and a digital signal processing circuit (not shown) to sequentially process signals to be received inside in a range of high frequency, intermediate frequency to low frequency.
It should be noted that the architecture described above with respect to transceiver circuitry 120 is merely exemplary. In other embodiments, the transceiver circuitry 120 may also include other circuitry to transmit and receive signals. The present invention is not limited to any particular architecture.
The self-calibration circuit 130 is shown in fig. 1A as a separate circuit from the transceiver circuit 120. However, in other embodiments, the self-calibration circuit 130 may be disposed in the transceiverCircuitry internal to the processor circuit 120. The self-calibration circuit 130 is configured to pass the transceiver circuit 120 through the signal transmission path TP 1 ～TP M One of them (e.g. signal transmission path TP in FIG. 1A) 1 ) Transmitting the transmission signal TS to the path switching circuit 110 and passing through the signal receiving path RP 1 ～RP N At least one of them (e.g. signal receiving path RP in FIG. 1A) N ) The leakage (leakage) signal LS generated by the transmission signal TS is received, so as to perform at least one self-calibration procedure on the transceiver circuit 120 according to the transmission signal TS and the leakage signal LS, wherein the leakage signal LS has a leakage signal strength greater than a predetermined level. The predetermined level is greater than or equal to the magnitude of the lowest receivable signal of the transceiver device 100. In one embodiment, the predetermined level is between-90 and-100 decibel milliwatts (dBm) based on the requirements of the transceiver circuit 120 to conform to a communication protocol standard (e.g., without limitation, a 3GPP or IEEE 802.11 standard).
In one embodiment, the transceiver device 100 further includes an amplifying circuit 150 disposed on the signal transmission path TP 1 ～TP M And is configured to power amplify a signal transmitted by transceiver circuitry 120, such as transmit signal TS. In fig. 1A, the amplifying circuit 150 includes an amplifier AL, an amplifier AM, an amplifier AH, a switching circuit SL, a switching circuit SM, and a switching circuit SH. In one embodiment, each of the amplifiers AL, AM, AH included in the amplifying circuit 150 may correspond to one or more transmitting circuits in the transceiver circuit 120 as needed to receive the signal to be transmitted.
The amplifier AL amplifies a signal of a relatively low frequency band and selects a signal transmission path TP through a switching circuit SL 1 ～TP M One of them carries out signal transmission. The amplifier AM amplifies the signal of the relatively intermediate frequency band and selects the signal transmission path TP by the switching circuit SM 1 ～TP M One of them carries out signal transmission. The amplifier AH amplifies a signal of a relatively high frequency band and selects a signal transmission path TP through the switching circuit SH 1 ～TP M One of them carries out signal transmission.
In one embodiment, the transmit signal TS has an initial signal strength when generated by the transceiver circuitry 120. Amplified by the amplifying circuit 150 and transmitted to the signal transmission path TP 1 ～TP M After that, the transmission signal TS transmitted to the path switching circuit 110 will have a transmission signal strength. The path switching circuit 110 causes the signal transmission path TP to 1 ～TP M Signal receiving path RP 1 ～RP N Has isolation between them. The leakage signal LS has a leakage signal strength that is a difference between the transmission signal strength and the isolation.
In one embodiment, when the transceiver circuit 120 is receiving a general signal, the strength of the signal processed from the outside is mostly within a range of a preset level. In one numerical example, the original signal strength is-3 decibel-milliwatts, the transmitted signal strength is 24 decibel-milliwatts, and the isolation is 50 decibels (dB). The leakage signal strength will be-26 db milliwatts (24-50 = -26).
Thus, the leakage signal strength in this numerical example is much greater than the preset level. The strength of the leakage signal LS received by the self-calibration circuit 130 is of sufficient reliability. Even one of the signal receiving paths RP generating the leakage signal LS 1 ～RP N The filter FR is provided to further reduce the leakage signal strength, and the leakage signal strength has a certain margin with respect to the preset level, so that the self-calibration circuit 130 performs self-calibration accordingly.
In one embodiment, the self-calibration circuit 130 can determine whether the strength of the leakage signal LS is greater than a predetermined level after receiving the leakage signal LS, so as to perform the self-calibration procedure after confirming that the strength of the leakage signal LS is greater than the predetermined level.
The self-calibration procedure performed by the self-calibration circuit 130 includes, for example, but is not limited to, IQ image signal rejection correction (IQ image rejection calibration), digital predistortion correction compensation (digital pre-distortion calibration), local oscillation leakage correction compensation (LO leakage calibration), dc offset correction compensation (DC offset calibration), transmit signal power correction compensation (transmitter output power calibration), or a combination thereof, to calibrate the various circuit elements included in the transceiver circuit 120.
In one embodiment, transceiver circuitry 120 may pass through signal transmission path TP 1 ～TP M One of them transmits a transmission signal TS and passes through a plurality of signal receiving paths RP 1 ～RP N The corresponding generated leakage (leak) signals LS are received, respectively. By passing through different signal-receiving paths RP 1 ～RP N The received leakage signals LS have different characteristics, and the transceiver circuit 120 can perform different self-calibration procedures on the transceiver circuit 120 according to the transmission signal TS and the proper leakage signal LS, instead of performing multiple self-calibration procedures in a time-sharing manner.
In one embodiment, the transceiver circuit 120 can pass through the other signal transmission paths TP not corresponding to the self-calibration process at the same time when the self-calibration circuit 130 performs the self-calibration process 1 ～TP M Signal receiving path RP 1 ～RP N Signal transmission and/or signal reception takes place. Thus, the self-calibration circuit 130 may perform a self-calibration procedure with the transceiver circuit 120 running in real-time (real-time).
Further, in one embodiment, since the path switching circuit 110 itself is in the signal transmission path TP 1 ～TP M Signal receiving path RP 1 ～RP N The leakage characteristic between the two paths is that the path switching circuit 110 does not need to transmit one signal transmission path TP for transmitting the transmission signal TS when the self-calibration circuit 130 performs the self-calibration procedure 1 ～TP M (e.g., signal Transmission Path TP in FIG. 1A) 1 ) Is electrically coupled to the antenna ANT. More specifically, even if the transmission signal TS is transmitted to only the path switching circuit 110 and is not transmitted to the antenna ANT via the path switching circuit 110, the signal receiving path RP 1 ～RP N The leakage signal LS may still be generated accordingly.
Note that in fig. 1A, the path switching circuit 110 is drawn and described by taking a single-pole, multi-throw switching circuit as an example. However go upThe self-calibration mechanism described above is also applicable to transceiver devices 100 that include path switching circuitry 110 implemented as a multi-pole, multi-throw switch (multiple pole multiple throw) circuit. Under such architecture, the path switching circuit 110 implemented by the multi-pole multi-throw switch circuit is electrically coupled with the plurality of antennas ANT to switch the plurality of antennas ANT and the signal transmission path TP by the plurality of switches 1 ～TP M Signal receiving path RP 1 ～RP N Connection relation between the two.
In some prior art, the self-calibration of the transceiver device must be performed by additionally providing a detection circuit for detecting the power of the transmission signal, or by additionally providing a feedback circuit for feeding back the transmission signal, based on the detected or fed back transmission signal. Not only does the cost of the circuit arrangement therefore rise, but it is also not self-calibrating independent of the signal transmitted in real time.
The transceiver device with the self-calibration mechanism can generate a leakage signal according to the transmission signal transmitted by the transceiver circuit through the path switching circuit, and perform self-calibration according to the leakage signal through the self-calibration circuit, thereby achieving the purpose of self-calibration without additional circuits.
Please refer to fig. 1B. Fig. 1B shows a block diagram of a transceiver device 100' with a self-calibration mechanism in one embodiment of the invention. The transceiver device 100' includes: signal transmission path TP 1 Signal receiving path RP 1 Path switching circuitry 110, transceiver circuitry 120, and self-calibration circuitry 130.
In the foregoing embodiments, a plurality of signal transmission paths and a plurality of signal reception paths are described as examples. However, in the present embodiment, the transceiver device 100' may also include only one signal transmission path TP 1 One signal receiving path RP 1 。
The path switching circuit 110 is configured to switch the antenna ANT and the signal transmission path TP 1 Signal receiving path RP 1 Connection relation between the two. The transceiver circuit 120 is electrically coupled to the signal transmission path TP 1 Signal receptionPath RP 1 . The self-calibration circuit 130 enables the transceiver circuit 120 to pass through the signal transmission path TP 1 Transmitting the transmission signal TS to the path switching circuit 110 and passing through the signal receiving path RP 1 The leakage signal LS generated by the transmission signal TS is received to perform a self-calibration procedure on the transceiver circuit 120 according to the transmission signal TS and the leakage signal LS. The detailed structure and operation mechanism of each element in fig. 1B are the same as those of each element shown in fig. 1A, and will not be described again here.
Please refer to fig. 2. Fig. 2 shows a flow chart of a transceiver device self-calibration method 200 in one embodiment of the invention.
In addition to the foregoing, the present invention also discloses a transceiver device self-calibration method 200 applied to, for example, but not limited to, the transceiver device 100 of fig. 1A or the transceiver device 100' of fig. 1B. The transceiver device self-calibration method 200 will be described below using the transceiver device 100 of fig. 1A as an example. One embodiment of a transceiver device self-calibration method 200 is shown in fig. 2, and includes the following steps.
In step S210, the path switching circuit 110 is caused to switch the antenna ANT and the signal transmission path TP by the included switch 140 1 ～TP M Signal receiving path RP 1 ～RP N The connection relationship between the two circuits is that the path switching circuit 110 is electrically coupled to the signal transmission paths TP of the corresponding signal frequency bands at the first side 1 ～TP M Signal receiving path RP 1 ～RP N And is electrically coupled to the antenna ANT at the second side.
In step S220, electrically coupled to the signal transmission path TP 1 ～TP M Signal receiving path RP 1 ～RP N Through signal transmission path TP 1 ～TP M One of them transmits a transmission signal TS to the path switching circuit 110 and passes through the signal receiving path RP 1 ～RP N At least one of the signals receives a leakage signal LS generated by the transmission signal TS, wherein the leakage signal LS has a leakage signal strength greater than a predetermined level.
In step S230, the self-calibration circuit 130 performs a self-calibration procedure on the transceiver circuit 120 according to the transmission signal TS and the leakage signal LS.
It should be noted that the above embodiments are only examples. In other embodiments, variations may be made by those of ordinary skill in the art without departing from the spirit of the invention.
In summary, the transceiver device with the self-calibration mechanism and the self-calibration method thereof according to the present invention generate the leakage signal according to the transmission signal transmitted by the transceiver circuit through the path switching circuit, and perform self-calibration according to the leakage signal through the self-calibration circuit, thereby achieving the purpose of self-calibration without additional circuitry.
Although the embodiments of the present invention have been described above, these embodiments are not intended to limit the present invention, and those skilled in the art may make variations to the technical features of the present invention according to the explicit or implicit disclosure of the present invention, and all variations may fall within the scope of the present invention, that is, the scope of the present invention is defined by the claims of the present application.
Reference numerals
100. 100' transceiver device
110 path switching circuit
120 transceiver circuitry
130 self-calibration circuit
140, change-over switch
150 amplifying circuit
200 method for self-calibration of transceiver device
S210-S230 step
AH. AL, AM amplifier
ANT antenna
FR-filter
LS leakage signal
RP 1 ～RP N Signal receiving path
SH, SL, SM switching circuit
TP 1 ～TP M Signal transmission path
TS: transmitting signal

Claims (10)

1. A transceiver device with a self-calibration mechanism, comprising:
a signal transmission path and a signal reception path;
the path switching circuit is electrically coupled to the signal transmission path and the signal receiving path at a first side, is electrically coupled to the antenna at a second side, and comprises a switch for switching the connection relationship among the antenna, the signal transmission path and the signal receiving path;
a transceiver circuit configured to be electrically coupled to the signal transmission path and the signal reception path; and
and a self-calibration circuit configured to cause the transceiver circuit to transmit a transmission signal to the path switching circuit through the signal transmission path and to receive a leakage signal generated by the transmission signal through the signal receiving path, so as to perform a self-calibration procedure on the transceiver circuit according to the transmission signal and the leakage signal, wherein the leakage signal has a leakage signal strength greater than a preset level.
2. The transceiver device of claim 1, wherein the transceiver device has a plurality of signal transmission paths and a plurality of signal reception paths, and the plurality of signal transmission paths and the plurality of signal reception paths each correspond to one signal band.
3. The transceiver device of claim 2, wherein the self-calibration circuit is configured to control the transceiver circuit to transmit the transmit signal to the path switching circuit via one of the plurality of signal transmission paths and to receive the leakage signal generated by the transmit signal via at least one of the plurality of signal reception paths.
4. The transceiver device of claim 3, wherein the self-calibration circuit receives the leakage signal generated by the transmit signal through the plurality of signal reception paths to simultaneously perform a different plurality of self-calibration procedures on the transceiver circuit according to the transmit signal and the leakage signal.
5. A transceiver device according to claim 3, wherein the transceiver circuit performs signal transmission and/or signal reception simultaneously through the plurality of signal transmission paths and the plurality of signal reception paths not corresponding to the self-calibration procedure while the self-calibration circuit performs the self-calibration procedure.
6. The transceiver device according to claim 1, wherein the transmission signal transmitted to the path switching circuit has a transmission signal strength, the path switching circuit has an isolation between the signal transmission path and the signal reception path, and the leakage signal strength is a difference between the transmission signal strength and the isolation.
7. The transceiver device of claim 1, wherein the path switching circuit is a single pole, multi-throw switching circuit connected to a single antenna, or a multi-pole, multi-throw switching circuit connected to multiple antennas.
8. The transceiver device of claim 1, further comprising an amplifying circuit disposed on the signal transmission path and configured to power amplify the transmission signal.
9. The transceiver device of claim 1, wherein the self-calibration procedure comprises IQ image signal rejection correction, digital predistortion correction compensation, local oscillation leakage correction compensation, direct current offset correction compensation, transmit signal power correction compensation, or a combination thereof.
10. A method of transceiver device self-calibration, comprising:
the method comprises the steps that a path switching circuit is switched by a switching switch which is included in the path switching circuit to switch connection relations among an antenna, a signal transmission path and a signal receiving path, wherein the path switching circuit is electrically coupled to the signal transmission path and the signal receiving path on a first side and is electrically coupled to the antenna on a second side;
transmitting a transmission signal to the path switching circuit through the signal transmission path by a transceiver circuit electrically coupled to the signal transmission path and the signal receiving path, and receiving a leakage signal generated by the transmission signal through the signal receiving path, wherein the leakage signal has a leakage signal strength greater than a preset level; and
and enabling a self-calibration circuit to perform a self-calibration procedure on the transceiver circuit according to the transmission signal and the leakage signal.
CN202210841245.1A 2022-07-18 2022-07-18 Transceiver device with self-calibration mechanism and self-calibration method thereof Pending CN117459085A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210841245.1A CN117459085A (en) 2022-07-18 2022-07-18 Transceiver device with self-calibration mechanism and self-calibration method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210841245.1A CN117459085A (en) 2022-07-18 2022-07-18 Transceiver device with self-calibration mechanism and self-calibration method thereof

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Publication Number Publication Date
CN117459085A true CN117459085A (en) 2024-01-26

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