CN114362845B - Frequency conversion device with consistent bidirectional time delay and time delay calibration method - Google Patents
Frequency conversion device with consistent bidirectional time delay and time delay calibration method Download PDFInfo
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- CN114362845B CN114362845B CN202111429004.8A CN202111429004A CN114362845B CN 114362845 B CN114362845 B CN 114362845B CN 202111429004 A CN202111429004 A CN 202111429004A CN 114362845 B CN114362845 B CN 114362845B
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Abstract
The utility model discloses a frequency conversion device with consistent bidirectional time delay and a time delay calibration method, wherein the device comprises: and the signal to be processed sequentially passes through the frequency conversion units to perform frequency conversion processing with consistent bidirectional delay, so as to generate a target frequency conversion signal. The device is used for measuring and calibrating the transmitting and receiving time delay of a radio frequency signal transceiver, and has very important value and significance as a scale for metering detection.
Description
Technical Field
The application relates to the technical field of time frequency measurement, in particular to a frequency conversion device with consistent bidirectional time delay and a method for performing time delay calibration by using the frequency conversion device, which are suitable for the time delay measurement calibration of the transmission and the reception of a radio frequency signal transceiver.
Background
The frequency conversion device is an important component of the radio frequency signal transceiver, and is widely applied to large-scale systems such as radio communication, satellite communication, radar detection and the like, and the technology is mature. In general, frequency conversion apparatuses are classified into up-conversion apparatuses and down-conversion apparatuses, which are used in a radio frequency signal transmitting unit and a receiving unit, respectively. Along with the continuous development of high-precision equipment such as range radars, satellite-based remote time comparison systems and the like, the delay consistency and the calibration precision of radio frequency signal transceivers are more important, and the requirements are continuously improved. In the process of transmitting, receiving time delay measurement and calibration of a radio frequency signal transceiver, the frequency conversion device with consistent bidirectional time delay can be used as a scale for metering and detecting, and has very important value and significance.
Disclosure of Invention
An object of the present application is to provide a frequency conversion device with consistent bidirectional delay, which is mainly used for the operations of measuring and calibrating the transmission and reception delay of a radio frequency signal transceiver.
Another object of the present application is to provide a method for performing delay calibration using the above device.
In order to achieve the above purpose, the scheme is as follows:
a bi-directional delay consistent frequency conversion device, the device comprising:
the multistage frequency conversion units are connected in sequence; and the signal to be processed sequentially passes through the multi-stage frequency conversion unit to perform frequency conversion processing with consistent bidirectional delay, so as to generate a target frequency conversion signal.
Preferably, the frequency conversion unit comprises an amplifying module and a frequency conversion module which are connected with each other;
the amplifying module in each stage of frequency conversion unit is connected with the frequency conversion module in the upper stage of frequency conversion unit, and the frequency conversion module in each stage of frequency conversion unit is connected with the amplifying module in the lower stage of frequency conversion unit;
the amplifying modules in each stage of frequency conversion unit have the same structure, and the frequency conversion modules in each stage of frequency conversion unit have the same structure.
Preferably, the amplifying module is a bidirectional amplifying module and comprises a first controllable single-pole double-throw switch, a second controllable single-pole double-throw switch, a signal amplifier and a controllable attenuator;
the first controllable single-pole double-throw switch is respectively connected with the input ends of the signal amplifier and the controllable attenuator, and the second controllable single-pole double-throw switch is respectively connected with the output ends of the signal amplifier and the controllable attenuator; or (b)
The second controllable single-pole double-throw switch is respectively connected with the input ends of the signal amplifier and the controllable attenuator, and the first controllable single-pole double-throw switch is respectively connected with the output ends of the signal amplifier and the controllable attenuator.
Preferably, the frequency conversion module includes:
the local oscillation source, the mixer and the filter are connected with the mixer;
one end of a mixer in each stage of frequency conversion module is connected with a second controllable single-pole double-throw switch of an amplifying module in the stage of frequency conversion unit, and the other end of the mixer is connected with a filter;
one end of a filter in each stage of frequency conversion module is connected with the mixer, and the other end of the filter is connected with a first controllable single-pole double-throw switch of an amplifying module in the next stage of frequency conversion unit.
Preferably, the mixer and/or the filter are passive devices.
In a second aspect, a method for performing delay calibration by using the frequency conversion device with consistent bidirectional delay is provided, and the method includes the following steps:
constructing a time delay calibration channel;
feeding the transmitting signal into a time delay calibration channel, and measuring the signal transmission time delay at the moment;
transmitting signals by the time delay calibration channel, feeding the signals into the receiving channel, and measuring the signal transmission time delay at the moment;
and based on the signal time delay of the self-loop work of the radio frequency signal transceiver, the time delay calibration is completed.
Preferably, the constructing the time delay calibration channel includes:
based on the performance parameters of the radio frequency signal receiving and transmitting device, the number of amplifying modules and the number of frequency conversion modules in the frequency conversion device are configured, a time delay calibration channel is constructed, and configuration parameters are solidified.
Preferably, the signal propagation delay resulting from feeding the transmit signal into the delay calibration channel is measured as the sum of the transmit channel delay and the calibration channel delay.
Preferably, the signal transmission delay produced by the delay calibration channel and fed into the receive channel is measured as the sum of the calibration channel delay and the receive channel delay.
Preferably, the signal delay of the self-loop operation of the radio frequency signal transceiver is the sum of the delay of a transmitting channel and the delay of a receiving channel.
The beneficial effects of this scheme are as follows:
the device is used for measuring and calibrating the transmitting and receiving time delay of the radio frequency signal transceiver, is a frequency conversion device with consistent bidirectional time delay, can be used as a scale for metering and detecting, and has very important value and significance.
Drawings
In order to more clearly illustrate the practice of the present solution, the drawings that are required for the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the present solution and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a frequency conversion device of the present application;
FIG. 2 is a schematic diagram of a bidirectional amplifying module according to the present application;
fig. 3 is a schematic diagram of the frequency conversion module according to the present application.
1-an amplifying module; 2-a frequency conversion module; a 3-signal amplifier; a 4-controllable attenuator; 5-a local vibration source and 6-a mixer; 7-filter.
Detailed Description
Embodiments of the present application will be described in further detail below with reference to the accompanying drawings. It is clear that the described embodiments are only some of the embodiments of the present solution, not an exhaustive list of all embodiments. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments in the present solution may be combined with each other.
The terms first, second and the like in the description and in the claims and in the above-described figures, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
As the requirements for delay consistency and calibration accuracy of radio frequency signal transceivers are continually increasing. Therefore, the inventor of the application provides a frequency conversion device with consistent bidirectional time delay, and uses the frequency conversion device as a scale for metering detection to calibrate the time delay of a radio frequency signal transceiver.
As shown in fig. 1, a frequency conversion device with consistent bidirectional time delay includes: a plurality of frequency conversion units connected in sequence; and the signal to be processed sequentially passes through a plurality of frequency conversion units to carry out frequency conversion processing with consistent bidirectional delay, so as to generate a target frequency conversion signal. Each stage of frequency conversion unit comprises an amplifying module 1 and a frequency conversion module 2 which are connected with each other; the amplifying module 1 in each stage of frequency conversion unit is connected with the frequency conversion module 2 in the upper stage of frequency conversion unit, and the frequency conversion module 2 in each stage of frequency conversion unit is connected with the amplifying module 1 in the lower stage of frequency conversion unit; the amplifying modules 1 in each stage of frequency conversion unit have the same structure, and the frequency conversion modules 2 in each stage of frequency conversion unit have the same structure.
In one embodiment, the amplifying module 1 is a bidirectional amplifying module, and comprises a first controllable single-pole double-throw switch S1, a second controllable single-pole double-throw switch S2, a signal amplifier 3 and a controllable attenuator 4;
the first controllable single-pole double-throw switch S1 is respectively connected with the input ends of the signal amplifier 3 and the controllable attenuator 4, and the second controllable single-pole double-throw switch S2 is respectively connected with the output ends of the signal amplifier 3 and the controllable attenuator 4; or (b)
The second controllable single-pole double-throw switch S2 is respectively connected with the input ends of the signal amplifier 3 and the controllable attenuator 4, and the first controllable single-pole double-throw switch S1 is respectively connected with the output ends of the signal amplifier 3 and the controllable attenuator 4.
In one embodiment, the frequency conversion module 2 comprises:
the vibration source 5, the mixer 6 and the filter 7, the vibration source 5 is connected with the mixer 6, and the filter 7 is connected with the mixer 6; one end of a mixer 6 in each stage of frequency conversion module 2 is connected with a second controllable single-pole double-throw switch S2 of an amplifying module 1 in the stage of frequency conversion unit, and the other end of the mixer is connected with a filter 7; one end of a filter 7 in each stage of frequency conversion module 2 is connected with the mixer 6, and the other end of the filter is connected with a first controllable single-pole double-throw S1 switch of an amplifying module 1 in the next stage of frequency conversion unit; the mixer 6 is a passive device; the filter 7 is a passive device.
The structure of the frequency conversion device is not solidified, and the number of stages of the included amplifying module and the frequency conversion module is determined by application scenes and related technical indexes. Each stage of amplifying module and the frequency conversion module independently exist and can be increased or decreased according to application scenes. As shown in fig. 2, each stage of amplifying module has the same structure and consists of two controllable single-pole double-throw switches, a signal amplifier and a controllable attenuator; as shown in fig. 3, each stage of the frequency conversion module 2 has the same structure and consists of a mixer, a filter and a local oscillator with corresponding frequency.
The two-way time delay of the amplifying module and the frequency conversion module contained in the frequency conversion device in the embodiment are highly consistent. The first controllable single-pole double-throw switch S1 and the second controllable single-pole double-throw switch S2 in the amplifying module 1 are used for switching the working direction of the signal amplifier 3, so that the design difficulty of the bidirectional amplifier is avoided, and bidirectional signals pass through the same unidirectional signal amplifier. In fig. 1, when a signal is transmitted from left to right, a first controllable single-pole double-throw switch S1 is connected with a channel 1, a second controllable single-pole double-throw switch S2 is connected with a channel 4, and then the signal is input from the switch S1 and is output from the second controllable single-pole double-throw switch S2 through a signal amplifier 3 and a controllable attenuator 4; when the signal is transmitted from right to left, the second controllable single-pole double-throw switch S2 is connected with the channel 3, the first controllable single-pole double-throw switch S1 is connected with the channel 2, and then the signal is input from the second controllable single-pole double-throw switch S2 and is output from the first controllable single-pole double-throw switch S1 through the same signal amplifier 3 and the controllable attenuator 4. The signal transmission paths with the same length, the same signal amplifier and the controllable attenuator ensure the consistency of the bidirectional time delay of the amplifying module to a great extent. The mixer 6 and the filter 7 in the frequency conversion module are passive devices, and the bidirectional delay consistency is good.
The method for performing time delay calibration on the process of receiving and transmitting signals by the radio frequency signal transceiver through the microwave antenna by using the frequency conversion device with consistent bidirectional time delay comprises the following steps:
1. the configuration of the calibration channel, the number of amplifying modules and frequency conversion modules in the frequency conversion device are configured according to the working technical indexes of the microwave antenna and the transceiver, the time delay calibration channel is constructed, and the configuration parameters of the fixed telephone are not changed in the calibration process;
2. measuring the time delay of a transmitting channel, feeding a transmitting signal into a time delay calibration channel, and measuring the signal transmission time delay at the moment, namely the sum of the time delay of the transmitting channel and the time delay of the calibration channel;
3. measuring the time delay of a receiving channel, transmitting signals by a time delay calibration channel, feeding the signals into the receiving channel, and measuring the signal transmission time delay at the moment, namely, the sum of the time delay of the calibration channel and the time delay of the receiving channel;
4. and (3) data processing, namely measuring the signal delay of the self-loop work of the microwave antenna and the transceiver, namely the sum of the delay of a transmitting channel and the delay of a receiving channel, according to the actual calibration requirement, and performing data processing according to the measurement results of the previous steps to finish the delay calibration work.
It should be understood that the foregoing examples of the present application are provided merely for clearly illustrating the present application and are not intended to limit the embodiments of the present application, and that various other changes and modifications may be made therein by one skilled in the art without departing from the spirit and scope of the present application as defined by the appended claims.
Claims (7)
1. A frequency conversion device with consistent bidirectional time delay, which is characterized in that the device comprises:
the system comprises a plurality of stages of frequency conversion units which are connected in sequence, wherein a signal to be processed sequentially passes through the plurality of stages of frequency conversion units to be subjected to frequency conversion processing with consistent bidirectional time delay, and a target frequency conversion signal is generated;
the frequency conversion unit comprises an amplifying module and a frequency conversion module which are connected with each other;
the amplifying module in each stage of frequency conversion unit is connected with the frequency conversion module in the upper stage of frequency conversion unit, and the frequency conversion module in each stage of frequency conversion unit is connected with the amplifying module in the lower stage of frequency conversion unit;
the amplifying modules in each stage of frequency conversion unit have the same structure, and the frequency conversion modules in each stage of frequency conversion unit have the same structure;
the amplifying module is a bidirectional amplifying module and comprises a first controllable single-pole double-throw switch, a second controllable single-pole double-throw switch, a signal amplifier and a controllable attenuator;
the first controllable single-pole double-throw switch is respectively connected with the input ends of the signal amplifier and the controllable attenuator, and the second controllable single-pole double-throw switch is respectively connected with the output ends of the signal amplifier and the controllable attenuator; or (b)
The second controllable single-pole double-throw switch is respectively connected with the input ends of the signal amplifier and the controllable attenuator, and the first controllable single-pole double-throw switch is respectively connected with the output ends of the signal amplifier and the controllable attenuator;
the frequency conversion module comprises:
the local oscillation source, the mixer and the filter are connected with the mixer;
one end of a mixer in each stage of frequency conversion module is connected with a second controllable single-pole double-throw switch of an amplifying module in the stage of frequency conversion unit, and the other end of the mixer is connected with a filter;
one end of a filter in each stage of frequency conversion module is connected with the mixer, and the other end of the filter is connected with a first controllable single-pole double-throw switch of an amplifying module in the next stage of frequency conversion unit.
2. The bi-directional delay consistent frequency conversion device of claim 1 wherein the mixer and/or filter is a passive device.
3. A method for performing delay calibration, wherein the method for performing delay calibration by using the frequency conversion device with consistent bidirectional delay as claimed in claim 1 comprises the following steps:
constructing a time delay calibration channel;
feeding the transmitting signal into a time delay calibration channel, and measuring the signal transmission time delay at the moment;
transmitting signals by the time delay calibration channel, feeding the signals into the receiving channel, and measuring the signal transmission time delay at the moment;
and based on the signal time delay of the self-loop work of the radio frequency signal transceiver, the time delay calibration is completed.
4. The method of claim 3, wherein constructing the time delay calibration channel comprises:
based on the performance parameters of the radio frequency signal receiving and transmitting device, the number of amplifying modules and the number of frequency conversion modules in the frequency conversion device are configured, a time delay calibration channel is constructed, and configuration parameters are solidified.
5. A method according to claim 3, characterized in that the signal transmission delay resulting from feeding the transmit signal into the delay calibration channel is measured as the sum of the transmit channel delay and the calibration channel delay.
6. A method according to claim 3, characterized in that the signal transmission delay resulting from the measurement of the signal transmitted by the delay calibration channel and fed into the receive channel is the sum of the delay of the calibration channel and the delay of the receive channel.
7. A method according to claim 3, wherein the signal delay of the radio frequency signal transceiver device operating from the loop is the sum of the transmit path delay and the receive path delay.
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| CN103427768A (en) * | 2013-08-23 | 2013-12-04 | 北京无线电计量测试研究所 | Calibration method of relative time delay between multipath output signals |
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| CN108111184A (en) * | 2016-11-23 | 2018-06-01 | 北京遥感设备研究所 | A kind of ultra wide band compact radio frequency component |
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| US5108334A (en) * | 1989-06-01 | 1992-04-28 | Trimble Navigation, Ltd. | Dual down conversion GPS receiver with single local oscillator |
| CN103051287A (en) * | 2011-10-12 | 2013-04-17 | 特克特朗尼克公司 | Arbitrary multiband overlay mixer apparatus and method for bandwidth multiplication |
| CN103427768A (en) * | 2013-08-23 | 2013-12-04 | 北京无线电计量测试研究所 | Calibration method of relative time delay between multipath output signals |
| US9577771B1 (en) * | 2016-07-25 | 2017-02-21 | Apple Inc. | Radio frequency time skew calibration systems and methods |
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