Multi-channel communication device for synchronous transmission of multiple signals

Abstract

The present invention provides a multi-channel communication device for synchronously transmitting multiple signals, including: an intermediate frequency device and a radio frequency device; when the device is used to transmit a signal, the intermediate frequency device modulates the received digital signal to obtain a digital intermediate frequency modulation signal, performs combined filtering on the digital intermediate frequency modulation signal and the received time-coordinated signal to obtain a combined signal, and sends the received reference signal and the combined signal to the radio frequency device; the radio frequency device performs up-conversion filtering on the received combined signal and sends it to the opposite device; when the device is used to receive a signal, the radio frequency device receives the combined signal, performs down-conversion filtering on the combined signal, and sends the processed combined signal to the intermediate frequency device; the intermediate frequency device separates the received combined signal to obtain a separated digital signal and a time-coordinated signal, directly outputs the separated time-coordinated signal, and demodulates and taps the separated digital signal and outputs it. The present invention can reduce the complexity of the device.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a multi-channel communication device for synchronously transmitting multiple signals. Background Art

[0002] In radar transmission systems, in order to ensure the effective transmission of time synchronization signals, special RF channels are usually required for processing. To ensure reliable transmission delay and jitter, analog signals and digital signals must also use different transmission modes and equipment, which determines the complexity and large structure of communication equipment. In addition, since three signals are transmitted simultaneously, the available frequency range is limited, and the interference between frequencies is usually achieved through time division. This determines that the use of the device is limited. Each signal must be reliably transmitted in a limited time. How to achieve synchronous transmission of multiple signals such as reference signals, time synchronization signals, analog signals and digital signals, and reduce the complexity of the equipment is a technical problem that urgently needs to be solved in the existing technology. Summary of the invention

[0003] In view of this, the present invention provides a multi-channel communication device for synchronously transmitting multiple signals, which can solve the problem of high complexity of multiple signal synchronous transmission equipment.

[0004] In a first aspect, an embodiment of the present invention provides a multi-channel communication device for synchronously transmitting multiple signals, including: an intermediate frequency device and a radio frequency device;

[0005] When the device is used to transmit a signal, the intermediate frequency device is used to modulate the received digital signal to obtain a digital intermediate frequency modulation signal, combine and filter the digital intermediate frequency modulation signal and the received time signal to obtain a combined signal, and send the received reference signal and the combined signal to the radio frequency device; the radio frequency device is used to receive the reference signal and the combined signal sent by the intermediate frequency device, and perform up-conversion filtering on the received combined signal and then send the combined signal to the opposite device;

[0006] When the device is used to receive a signal, the radio frequency device is used to receive the combined signal, and perform down-conversion filtering on the combined signal, and send the processed combined signal to the intermediate frequency device; the intermediate frequency device is used to separate the received combined signal to obtain a separated digital signal and a time-coordinated signal, directly output the separated time-coordinated signal, and demodulate, tap and output the separated digital signal.

[0007] In a possible implementation, the intermediate frequency device includes a clock unit, a multiplexing modulation unit, a first combining unit, an intermediate frequency receiving unit and a demodulation tapping unit;

[0008] When the device is used to transmit a signal, the clock unit is used to perform frequency division, frequency conversion and filtering on the received reference signal, and output the processed reference signal to the radio frequency device and the first combining unit; the multiplexing modulation unit is used to modulate the received digital signal to obtain a digital intermediate frequency modulation signal of a first frequency, and send the digital intermediate frequency modulation signal of the first frequency to the first combining unit; the first combining unit is used to receive a time-coordinated signal of a first frequency, and combine and filter the digital intermediate frequency modulation signal of the first frequency and the time-coordinated signal to obtain a combined signal of a second frequency, and send the combined signal to the radio frequency device;

[0009] When the device is used to receive signals, the intermediate frequency receiving unit is used to receive the combined signal sent by the radio frequency device, filter and amplify the combined signal to obtain a separated time-coordinated signal and a digital intermediate frequency signal, directly output the separated time-coordinated signal, and send the separated digital intermediate frequency signal to the demodulation tapping unit. The demodulation tapping unit demodulates and taps the received digital intermediate frequency signal into a digital signal of bit information, and then outputs it after protocol analysis.

[0010] In a possible implementation, if the device is a master station device, the intermediate frequency receiving unit is further used to receive an analog signal of a third frequency sent by the radio frequency device, and perform frequency conversion, filtering and amplification processing on the received analog signal to obtain an analog signal of a fourth frequency, and directly output the analog signal of the fourth frequency;

[0011] If the device is a secondary station device, the intermediate frequency device further includes a first analog signal sending unit, which is used to send the received analog signal to the radio frequency device.

[0012] In one possible implementation,

[0013] In a possible implementation, the radio frequency device includes a branch unit, a main combining unit, a first power amplifier unit, a backup combining unit, a second power amplifier unit, a quadruplex unit, a second combining unit, a main combining unit, a first low-noise amplification unit, a backup combining unit, and a second low-noise amplification unit;

[0014] When the device is used to transmit a signal, the branching unit is used to receive a combined signal sent by the intermediate frequency device, and to branch the combined signal into a first combined signal and a second combined signal, and to send the first combined signal to the combined main transmitting unit, and to send the second combined signal to the combined standby transmitting unit, the combined main transmitting unit amplifies and performs up-conversion processing on the first combined signal, and then sends it to the first power amplifier unit, the first power amplifier unit amplifies and filters the received combined signal, and then sends it to the quadruplex unit, the combined standby transmitting unit amplifies and performs up-conversion processing on the second combined signal, and then sends it to the second power amplifier unit, the second power amplifier unit amplifies and filters the received combined signal, and then sends it to the quadruplex unit, and the quadruplex unit sends the two received combined signals to the radio frequency device of the opposite end device;

[0015] When the device is used to receive a signal, the quadruplex unit is used to send the received combined signal to the first low-noise amplifying unit and the second low-noise amplifying unit; the first low-noise amplifying unit amplifies the received combined signal and inputs it into the combined main receiving unit; the combined main receiving unit down-converts, filters and amplifies the received combined signal and inputs it into the second combining unit; the second low-noise amplifying unit amplifies the received combined signal and inputs it into the combined backup receiving unit; the combined backup receiving unit down-converts, filters and amplifies the received combined signal and inputs it into the second combining unit; the second combining unit combines the two received combined signals into one and sends it to the intermediate frequency device.

[0016] In a possible implementation, if the device is a master station device, the radio frequency device further includes: a duplex unit, a third low-noise amplifying unit, an analog main receiving unit, a fourth low-noise amplifying unit, an analog standby receiving unit, and a third combining unit, wherein the duplex unit is used to receive an analog signal sent by a peer device, and send the received analog signal to the third low-noise amplifying unit and the fourth low-noise amplifying unit, the third low-noise amplifying unit amplifies the received analog signal and inputs it into the analog main receiving unit, the analog main receiving unit down-converts, filters and amplifies the received analog signal and inputs it into the third combining unit, the fourth low-noise amplifying unit amplifies the received analog signal and inputs it into the analog standby receiving unit, the analog standby receiving unit down-converts, filters and amplifies the received analog signal and inputs it into the third combining unit, and the third combining unit combines the two received analog signals into one and sends it to the intermediate frequency device;

[0017] If the device is a secondary station device, the radio frequency device further includes a second analog signal sending unit, which is used to receive the analog signal sent by the first analog signal sending unit and send the received analog signal to the radio frequency device of the opposite device.

[0018] In a possible implementation, if the device is a master station device, and the master station device communicates with n secondary station devices, the radio frequency device further includes a power division unit;

[0019] The power splitter unit is used to split the combined signal output by the first power amplifier unit into n identical combined signals, and send one of the combined signals to the quadplexer unit;

[0020] The power splitter unit is further used to split the combined signal output by the second power amplifier unit into n identical combined signals, and send one of the combined signals to the quadplexer unit.

[0021] In one possible implementation, if the device is a master station device, and the master station device communicates with n slave station devices, the intermediate frequency device includes n intermediate frequency receiving units. For each intermediate frequency receiving unit, the intermediate frequency receiving unit uniquely corresponds to one slave station, and is used to receive the combined signal and the analog signal sent by the slave station, and filter and amplify the received combined signal to obtain a separated time-coordinated signal and a digital intermediate frequency signal, directly output the separated time-coordinated signal, and send the separated digital intermediate frequency signal to the demodulation tapping unit, and perform frequency conversion, filtering and amplification on the received analog signal.

[0022] In a possible implementation manner, the radio frequency device of the local device and the radio frequency device of the opposite device transmit signals by combining the signals of the horizontally polarized antenna of the dual-polarized antenna.

[0023] In one possible implementation, if the local device is a master station device, the radio frequency device of the local device receives the analog signal sent by the radio frequency device of the opposite device through the vertically polarized antenna of the dual-polarized antenna; if the local device is a secondary station device, the radio frequency device of the local device sends the analog signal to the radio frequency device of the opposite device through the vertically polarized antenna of the dual-polarized antenna.

[0024] In a possible implementation, each of the main combining unit, the main combining unit, the backup combining unit, the backup combining unit, and the intermediate frequency receiving unit further includes a delay equalization correction subunit. When the device communicates with the opposite device, the delay equalization correction subunit is used to control the total signal transmission delay between the device and the opposite device to be no greater than a preset delay. The signal transmission includes the transmission of a combined signal and / or the transmission of an analog signal.

[0025] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0026] In the embodiment of the present invention, the intermediate frequency device combines the time-coordinated signal and the digital signal into a combined signal, and the combined signal is transmitted through a radio frequency channel in the radio frequency device, thereby effectively reducing the complexity of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0028] Figure 1 It is a structural schematic diagram of a multi-channel communication device for synchronously transmitting multiple signals provided by an embodiment of the present invention;

[0029] Figure 2 It is a structural schematic diagram of an intermediate frequency device of a multi-channel communication device for synchronously transmitting multiple signals provided by an embodiment of the present invention;

[0030] Figure 3 It is a structural schematic diagram of an intermediate frequency device of another multi-channel communication device for synchronously transmitting multiple signals provided by an embodiment of the present invention;

[0031] Figure 4 It is a structural schematic diagram of an intermediate frequency device of another multi-channel communication device for synchronously transmitting multiple signals provided by an embodiment of the present invention;

[0032] Figure 5 It is a structural schematic diagram of a radio frequency device of a multi-channel communication device for synchronously transmitting multiple signals provided by an embodiment of the present invention;

[0033] Figure 6 It is a structural schematic diagram of another radio frequency device of a multi-channel communication device for synchronously transmitting multiple signals provided by an embodiment of the present invention;

[0034] Figure 7 It is a structural schematic diagram of a radio frequency device of another multi-channel communication device for synchronously transmitting multiple signals provided by an embodiment of the present invention;

[0035] Figure 8 It is a structural schematic diagram of a radio frequency device of another multi-channel communication device for synchronously transmitting multiple signals provided by an embodiment of the present invention;

[0036] Fig. 9 It is a structural schematic diagram of an intermediate frequency device of another multi-channel communication device for synchronously transmitting multiple signals provided by an embodiment of the present invention;

[0037] Fig.10 It is a structural schematic diagram of a multi-channel communication system for synchronously transmitting multiple signals provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0038] In order to enable people in the technical field to better understand the present solution, the technical solution in the embodiment of the present solution will be clearly described below in conjunction with the drawings in the embodiment of the present solution. Obviously, the described embodiment is an embodiment of a part of the present solution, not all of the embodiments. Based on the embodiments in the present solution, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present solution.

[0039] The term "including" and any other variations in the specification and claims of this solution and the above drawings mean "including but not limited to", and is intended to cover non-exclusive inclusions and is not limited to the examples listed in the text. In addition, the terms "first" and "second" are used to distinguish different objects, not to describe a specific order.

[0040] The following is a detailed description of the implementation of the present invention in conjunction with the specific drawings:

[0041] Figure 1 A schematic diagram of the structure of a multi-channel communication device for synchronously transmitting multiple signals provided by an embodiment of the present invention. Figure 1 As shown, the device includes an intermediate frequency device 1 and a radio frequency device 2;

[0042] When the device is used to transmit a signal, the intermediate frequency device 1 is used to modulate the received digital signal to obtain a digital intermediate frequency modulation signal, combine and filter the digital intermediate frequency modulation signal and the received time signal to obtain a combined signal, and send the received reference signal and the combined signal to the radio frequency device; the radio frequency device 2 is used to receive the reference signal and the combined signal sent by the intermediate frequency device, and send the combined signal to the opposite end device after up-converting and filtering the received combined signal;

[0043] When the device is used to receive signals, the radio frequency device 2 is used to receive the combined signal, and perform down-conversion filtering on the combined signal, and send the processed combined signal to the intermediate frequency device; the intermediate frequency device 1 is used to separate the received combined signal to obtain a separated digital signal and a time-coordinated signal, directly output the separated time-coordinated signal, and demodulate, tap and output the separated digital signal.

[0044] In the embodiment of the present invention, the reference signal refers to a clock reference signal, and the digital signal refers to a digital signal such as synchronous data, asynchronous data, and voice data.

[0045] In the embodiment of the present invention, the intermediate frequency device combines the time-coordinated signal and the digital signal into a combined signal, and the combined signal is transmitted through a radio frequency channel in the radio frequency device, thereby effectively reducing the complexity of the device.

[0046] See also Figure 2 , which shows a schematic diagram of the structure of the intermediate frequency device 1 in the multi-channel communication device for synchronously transmitting multiple signals provided by an embodiment of the present invention, combined with Figure 2 , the intermediate frequency device 1 includes a clock unit 11, a multiplexing modulation unit 12, a first combining unit 13, an intermediate frequency receiving unit 14 and a demodulation tapping unit 15;

[0047] When the device is used to transmit a signal, the clock unit 11 is used to perform frequency division, frequency conversion and filtering on the received reference signal, and output the processed reference signal to the radio frequency device 1 and the first combining unit 13; the multiplexing modulation unit 12 is used to modulate the received digital signal to obtain a digital intermediate frequency modulation signal of a first frequency, and send the digital intermediate frequency modulation signal of the first frequency to the first combining unit; the first combining unit 13 is used to receive a time-coordinated signal of a first frequency, and combine and filter the digital intermediate frequency modulation signal of the first frequency and the time-coordinated signal to obtain a combined signal of a second frequency, and send the combined signal to the radio frequency device 1;

[0048] When the device is used to receive signals, the intermediate frequency receiving unit 14 is used to receive the combined signal sent by the radio frequency device, filter and amplify the combined signal to obtain a separated time-coordinated signal and a digital intermediate frequency signal, directly output the separated time-coordinated signal, and send the separated digital intermediate frequency signal to the demodulation tapping unit 15. The demodulation tapping unit 15 demodulates and taps the received digital intermediate frequency signal into a digital signal of bit information, and then outputs it after protocol analysis.

[0049] In the embodiment of the present invention, the first frequency and the second frequency refer to the center frequency of the signal. In a possible implementation, the center frequency of the digital signal received by the multiplexing modulation unit 12 is 200MHz, and after modulation, a digital signal with a center frequency of 140MHz is obtained, that is, the first frequency is 140MHz, and the first combining unit 13 receives a time-consistent signal with a center frequency of 140MHz, combines and filters the digital signal with a center frequency of 140MHz and the time-consistent signal with a center frequency of 140MHz, and obtains a combined signal with a center frequency of 168MHz, that is, the second frequency is 168MHz.

[0050] In a possible implementation, the device provided in the embodiment of the present invention can be a main station device or a secondary station device. The main station device can synchronously transmit multiple signals with multiple secondary station devices, and each secondary station device only synchronously transmits multiple signals with the main station. Among them, the analog signal is a unidirectional signal. If a main station device communicates with a secondary station device, the transmission direction of the analog signal is uplink transmission, that is, the secondary station device transmits the analog signal to the main station device, the secondary station device only transmits the analog signal, and the main station device only receives the analog signal. In other words, the main station device does not transmit analog signals to the secondary station device, and the secondary station device does not receive analog signals.

[0051] Based on this, combined Figure 3 If the device provided in the embodiment of the present invention is a master station device, the intermediate frequency receiving unit 14 in the intermediate frequency device 1 is also used to receive the analog intermediate frequency signal of the third frequency sent by the radio frequency device 2, and perform frequency conversion, filtering and amplification processing on the received analog intermediate frequency signal to obtain an analog signal of the fourth frequency, and directly output the analog signal of the fourth frequency.

[0052] The analog intermediate frequency signal of the third frequency received by the intermediate frequency receiving unit 14 in the intermediate frequency device 1 is an analog intermediate frequency signal of 300 MHz. The received analog intermediate frequency of 300 MHz is down-converted to obtain a fourth frequency as the center frequency. In a possible implementation, the fourth frequency is 70 MHz, that is, an analog signal with a center frequency of 70 MHz is obtained.

[0053] Combination Figure 4 If the device provided in the embodiment of the present invention is a secondary station device, the intermediate frequency device 1 further includes a first analog signal sending unit 16 for sending the received analog signal to the radio frequency device 2 .

[0054] Figures 2 to 4 The RF device 2 is only used to more clearly indicate the direction of the signal output of the IF device 1. Figures 2 to 4 The radio frequency device 2 is not a part of the intermediate frequency device 1.

[0055] See also Figure 5 , which shows a schematic diagram of the structure of the radio frequency device 2 in the multi-channel communication device for synchronously transmitting multiple signals provided by an embodiment of the present invention, combined with Figure 5 The radio frequency device includes a branch unit 21, a main combiner transmitting unit 22, a first power amplifier unit 23, a backup combiner transmitting unit 24, a second power amplifier unit 25, a quadruplex unit 26, a second combiner unit 27, a main combiner receiving unit 28, a first low-noise amplifier unit 29, a backup combiner receiving unit 210, and a second low-noise amplifier unit 211;

[0056] When the device is used to transmit a signal, the branching unit 21 is used to receive a combined signal sent by the intermediate frequency device 1, and divide the combined signal into a first combined signal and a second combined signal, and send the first combined signal to the combined main sending unit 22, and send the second combined signal to the combined standby sending unit 24. The combined main sending unit 22 amplifies and up-converts the first combined signal and sends it to the first power amplifier unit 23. The first power amplifier unit 23 amplifies and filters the received combined signal and sends it to the quad-worker unit 26. The combined standby sending unit 24 amplifies and up-converts the second combined signal and sends it to the second power amplifier unit 25. The second power amplifier unit 25 amplifies and filters the received combined signal and sends it to the quad-worker unit 26. The quad-worker unit 26 sends the two received combined signals to the radio frequency device of the opposite end device.

[0057] When the device is used to receive signals, the quadruplex unit 26 is used to send the two received combined signals to the first low-noise amplifying unit 29 and the second low-noise amplifying unit 211 respectively; the first low-noise amplifying unit 29 amplifies the received combined signal and inputs it into the main combining receiving unit 28; the main combining receiving unit 28 down-converts, filters and amplifies the received combined signal and inputs it into the second combining unit 27; the second low-noise amplifying unit 211 amplifies the received combined signal and inputs it into the backup combining receiving unit 210; the backup combining receiving unit 210 down-converts, filters and amplifies the received combined signal and inputs it into the second combining unit 27; the second combining unit 27 combines the two received combined signals into one and sends it to the intermediate frequency device 1.

[0058] It should be noted that Figure 5 In the corresponding radio frequency device 2, there are two transmission channels for the combined signal. The main combiner transmitting unit 22 and the first power amplifier unit 23 constitute the first channel for combined signal transmission, and the backup combiner transmitting unit 24 and the second power amplifier unit constitute the second channel for combined signal transmission; there are also two receiving channels for the combined signal. The main combiner receiving unit 28 and the first low-noise amplifier unit 29 constitute the first channel for combined signal reception, and the backup combiner receiving unit 210 and the second low-noise amplifier unit 211 constitute the second channel for combined signal reception. The two receiving channels are mutually primary and backup, and the two transmitting channels are mutually primary and backup, thereby improving the reliability of the radio frequency device 2. Based on this, Figure 5 The structure of the radio frequency device 2 shown is a preferred implementation mode, and the radio frequency device 2 may also have only one combined signal transmission channel and one combined signal receiving channel. In this case, the radio frequency device does not need the branching unit 21 and the second combining unit 27, and the quadruplex unit 26 should be transformed into a duplex unit. The embodiment of the present invention is not limited to this.

[0059] In the embodiment of the present invention, the combined signal sent by the intermediate frequency device 1 to the radio frequency device 2 is an intermediate frequency combined signal, the combined signal sent by the radio frequency device 2 to the intermediate frequency device 1 is also an intermediate frequency combined signal, and the combined signal sent by the radio frequency device 2 to the radio frequency device of the opposite device is a radio frequency combined signal.

[0060] In the embodiment of the present invention, the reference signal is a reference clock signal. The intermediate frequency device 1 sends the reference signal to the radio frequency device 2. The radio frequency device 2 does not send the reference signal to the opposite device. The opposite device parses the clock reference signal from the demodulated signal through the received service signal and a certain timing algorithm to complete signal synchronization, such as parsing the reference signal from the combined signal and the analog signal.

[0061] In one possible implementation, Figure 6 A schematic diagram of the structure of a radio frequency device 2 in another multi-channel communication device for synchronously transmitting multiple signals provided by an embodiment of the present invention. Figure 6 , if the device is a master station device, the radio frequency device further includes: a duplex unit 212, a third low noise amplifying unit 213, an analog main receiving unit 214, a fourth low noise amplifying unit 215, an analog standby receiving unit 216, and a third combining unit 217;

[0062] The duplex unit 212 is used to receive the analog signal sent by the opposite device, and send the received analog signal to the third low-noise amplifying unit 213 and the fourth low-noise amplifying unit 215. The third low-noise amplifying unit 213 amplifies the received analog signal and inputs it into the analog main receiving unit 214. The analog main receiving unit 214 down-converts, filters and amplifies the received analog signal and inputs it into the third combining unit 217. The fourth low-noise amplifying unit 215 amplifies the received analog signal and inputs it into the analog backup receiving unit 216. The analog backup receiving unit 216 down-converts, filters and amplifies the received analog signal and inputs it into the third combining unit 217. The third combining unit 217 combines the two received analog signals into one and sends it to the intermediate frequency device 1.

[0063] In the embodiment of the present invention, the quadplexer unit 26 is composed of a quadplexer, the duplexer unit 212 is composed of a duplexer, the duplexer is composed of two transceiver filters combined, and the quadplexer is composed of four transceiver filters combined. The filters in the duplexer and the quadplexer are combined in a manner that ensures that they do not load each other, thereby ensuring a high degree of isolation between the outputs and avoiding signal crosstalk.

[0064] In the embodiment of the present invention, since the combined signal is a dual-carrier signal and is transmitted through a radio frequency channel, the main combiner transmitting unit 22, the backup combiner transmitting unit 24, the main combiner receiving unit 28, and the backup combiner receiving unit 210 use a voltage-controlled oscillator (VCO) with a relatively wide bandwidth.

[0065] In one possible implementation, Figure 7 A schematic diagram of the structure of a radio frequency device 2 in another multi-channel communication device for synchronously transmitting multiple signals provided by an embodiment of the present invention. Figure 7 If the device is a secondary station device, the radio frequency device further includes a second analog signal sending unit 218, which is used to receive the analog signal sent by the first analog signal sending unit 16 and send the received analog signal to the radio frequency device of the opposite device.

[0066] In one possible implementation, Figure 8 A schematic diagram of the structure of a radio frequency device 2 in another multi-channel communication device for synchronously transmitting multiple signals provided by an embodiment of the present invention. Figure 8 If the device is a master station device and the master station device communicates with n slave station devices, the radio frequency device also includes a power division unit 219; the power division unit 219 is used to divide the combined signal output by the first power amplifier unit into n identical combined signals, and send one of the combined signals to the quadruplex unit 26; the power division unit is also used to divide the combined signal output by the second power amplifier unit into n identical combined signals, and send one of the combined signals to the quadruplex unit 26.

[0067] The following is an explanation of the communication between the master station and two slave stations. Figure 8 , the first power amplifier unit 23 outputs a first combined signal, represented by a combined signal 1, the second power amplifier unit 25 outputs a second combined signal, represented by a combined signal 2, the power splitter unit 219 receives the combined signal 1, divides the combined signal 1 into two, namely, a combined signal 1-1 and a combined signal 1-2, divides the combined signal 2 into two, namely, a combined signal 2-1 and a combined signal 2-2, sends the combined signal 1-1 and the combined signal 2-1 to the quad-worker unit 26-2, sends the combined signal 1-2 and the combined signal 2-2 to the quad-worker unit 26-1, the quad-worker unit 26-2 sends the combined signals 1-1 and 2-1 to the radio frequency device of the secondary station 1, the quad-worker unit 26-1 sends the combined signals 1-2 and 2-2 to the radio frequency device of the secondary station 2, and completes the sending of the combined signal.

[0068] In the embodiment of the present invention, the second combining unit 27, the combining main receiving unit 28, the first low noise amplifying unit 29, the combining standby receiving unit 210, and the second low noise amplifying unit 211 constitute a combining main standby receiving channel, the third combining unit 217, the analog main receiving unit 214, the third low noise amplifying unit 213, the analog standby receiving unit 216, the fourth low noise amplifying unit 215, and the duplexing unit 212 constitute an analog main standby receiving channel, and the branching unit 21, the combining main transmitting unit 22, the first power amplifier unit 23, the combining standby transmitting unit 24, and the second power amplifier unit 25 constitute a combining main standby transmitting channel. The radio frequency device of the master station device communicates with n secondary stations, and there are n analog main standby receiving channels and n and combining main standby receiving channels. It should be noted that the radio frequency device 2 of the master station device has only one combining main standby transmitting channel. The master station device communicates with n slave station devices, and the RF equipment 2 of the master station device has n quadplexers. The combined signal sent by one combined main and standby transmission channel is divided into n pairs of main and standby combined signals by a power divider. One pair of main and standby combined signals and one combined main and standby receiving channel share one quadplexer, and one quadplexer communicates with the RF equipment of one slave station device.

[0069] It should be noted that Figures 5 to 8 The local device intermediate frequency equipment, the opposite device radio frequency equipment, the intermediate frequency equipment, the secondary station 1 radio frequency equipment, the secondary station 2 radio frequency equipment, etc. are only to more clearly indicate the signal output direction of the radio frequency equipment 2. Figures 5 to 7 The intermediate frequency equipment of the local device, the radio frequency equipment of the opposite device, the intermediate frequency equipment, the radio frequency equipment of the secondary station 1, and the radio frequency equipment of the secondary station 2 are not part of the radio frequency equipment 2.

[0070] In a possible implementation manner, the radio frequency device of the local device and the radio frequency device of the opposite device transmit signals by combining the signals of the horizontally polarized antenna of the dual-polarized antenna.

[0071] In one possible implementation, if the device is a main station device, and the main station device communicates with n secondary station devices, the intermediate frequency device includes n intermediate frequency receiving units 14, which can be represented by intermediate frequency receiving unit 14-1, intermediate frequency receiving unit 14-2...intermediate frequency receiving unit 14-n. For each intermediate frequency receiving unit, the intermediate frequency receiving unit uniquely corresponds to one secondary station, and is used to receive the combined signal and analog signal sent by the secondary station, and filter and amplify the received combined signal to obtain a separated time-coordinated signal and a digital intermediate frequency signal, directly output the separated time-coordinated signal, send the separated digital intermediate frequency signal to the demodulation branch unit, and perform frequency conversion, filtering and amplification on the received analog signal.

[0072] Fig. 9The intermediate frequency device structure when the primary station communicates with two secondary stations is exemplarily shown, including two intermediate frequency receiving units, namely, the intermediate frequency receiving unit 14-1 and the intermediate frequency receiving unit 14-2.

[0073] In one possible implementation, if the local device is a master station device, the radio frequency device of the local device receives the analog signal sent by the radio frequency device of the opposite device through the vertically polarized antenna of the dual-polarized antenna; if the local device is a secondary station device, the radio frequency device of the local device sends the analog signal to the radio frequency device of the opposite device through the vertically polarized antenna of the dual-polarized antenna.

[0074] Combination Figure 8 and Fig. 9 , when the master station communicates with two slave stations, Fig. 9 Corresponding to the master station intermediate frequency equipment, Figure 8 Corresponding to the master station radio frequency equipment, when the master station is used for signal transmission, combined with Fig. 9 The clock unit 11 of the intermediate frequency device outputs a reference signal, which is input to the radio frequency device 2, for example, to the reference signal processing unit of the radio frequency device. Although the reference signal processing unit is not marked in the drawings of the embodiment of the present invention, the radio frequency device 2 in the embodiment of the present invention includes this unit. The first combining unit 13 of the intermediate frequency device 1 outputs a combined signal, which is input to the input port of the branching unit 21. The combined signal is divided into two combined signals by the branching unit 21; the main combining unit 22 and the first power amplifier unit 23 process the first combined signal to obtain a combined signal 1, and the backup combining unit 24 and the second power amplifier unit 25 process the second combined signal to obtain a combined signal 2. The power splitter unit divides the combined signal 1 into a combined signal 1-1 and a combined signal 1-2, and divides the combined signal 2 into a combined signal 2-1 and a combined signal 2-2. The combined signal 1-1 and the combined signal 2-1 are sent to the radio frequency device of the secondary station 1 through the horizontal polarization antenna after passing through the quadruplex unit 26-2, and the combined signal 1-2 and the combined signal 2-2 are sent to the radio frequency device of the secondary station 2 through the horizontal polarization antenna after passing through the quadruplex unit 26-1.

[0075] When the main station is used for signal reception, the duplex unit 212-2 of the RF device 2 receives the analog signal sent by the RF device of the secondary station 1 through the vertically polarized antenna, and sends the processed analog signal to the analog intermediate frequency signal receiving port of the intermediate frequency receiving unit 14-2 through the third combining unit 217-2. The quadruplex unit 26-2 of the RF device 2 receives the combined signal sent by the RF device of the secondary station 1 through the horizontal and vertically polarized antenna, and sends the combined signal to the receiving port of the intermediate frequency receiving unit 14-2 through the second combining unit 27-2. The duplex unit 212-1 of the equipment 2 receives the analog signal sent by the RF device of the secondary station 2 through the vertical polarization antenna, and sends the processed analog signal to the analog intermediate frequency signal receiving port of the intermediate frequency receiving unit 14-1 through the third combining unit 217-1. The quadruplex unit 26-1 of the RF device 2 receives the combined signal sent by the RF device of the secondary station 2 through the horizontal and vertical polarization antenna, and sends it to the combined signal receiving port of the intermediate frequency receiving unit 14-1 through the second combining unit 27-1. The demodulation tapping unit 15 finally outputs a digital signal.

[0076] Based on the same principle, the primary station can communicate with multiple secondary stations, which is not limited in the embodiment of the present invention.

[0077] The device described in the embodiment of the present invention can be used to represent a primary station or a secondary station. In the embodiment of the present invention, a primary station and a primary station device are used to represent the same concept, and a secondary station and a secondary station device are used to represent the same concept.

[0078] Fig.10 A multi-channel communication system for synchronously transmitting multiple signals provided in an embodiment of the present invention is exemplarily provided, and the system includes a main station and three sub-stations. The main station communicates with the three sub-stations, and the main station sends a combined signal to each sub-station through a horizontally polarized antenna in a multi-antenna dual-polarization mode, and receives the combined signal sent by each sub-station through a horizontally polarized antenna, and receives the analog signal sent by the sub-station through a vertically polarized antenna. The sub-station sends a combined signal to the main station through the horizontally polarized antenna of the dual-polarized antenna, receives the combined signal sent by the main station through the horizontally polarized antenna, and sends an analog signal to the main station through the vertically polarized antenna.

[0079] In one possible implementation, each of the main combining unit 22, the main combining unit 28, the backup combining unit 24, the backup combining unit 210, and the intermediate frequency receiving unit 14 also includes a delay equalization correction subunit. When the device communicates with the opposite device, the delay equalization correction subunit is used to control the total delay of signal transmission between the device and the opposite device to be no greater than a preset delay. Signal transmission includes transmission of combined signals and / or transmission of analog signals.

[0080] Since the duplexer and quadplexer include filters, and the intermediate frequency receiving unit also includes filters, after theoretical calculation, the delay fluctuation of the transceiver filter in the RF multiplexer, such as the duplexer and quadplexer, can be controlled to be within 2ns at the minimum, and the intermediate frequency filter, such as the filter in the intermediate frequency receiving unit, can be controlled to be within 1.5ns at the minimum. Since the delay is cumulative and there is uncertainty, in order to achieve the in-band group delay requirement of 3ns, the device configures a delay equalization correction subunit in each unit of the main transmission unit 22, the main receiving unit 28, the backup transmission unit 24, the backup receiving unit 210, and the intermediate frequency receiving unit 14, so that the total group delay characteristics after synthesis meet the technical indicators. The delay equalization correction subunit includes a delay equalization correction circuit.

[0081] The device provided in the embodiment of the present invention has the characteristics of multiple transmission channels, multiple frequencies, and small intervals. By adopting the design of transmitting and receiving isolation and frequency configuration calculation, multiple signals are transmitted synchronously. In the embodiment of the present invention, three signals, digital signals, time-synchronous signals, and analog signals, are transmitted synchronously using the same device, which greatly improves the transmission efficiency.

[0082] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A multi-channel communication device for synchronously transmitting multiple signals, characterized in that: include: IF equipment and RF equipment; When the device is used to transmit a signal, the intermediate frequency device is used to modulate the received digital signal to obtain a digital intermediate frequency modulation signal, combine and filter the digital intermediate frequency modulation signal and the received time signal to obtain a combined signal, and send the received reference signal and the combined signal to the radio frequency device; the radio frequency device is used to receive the reference signal and the combined signal sent by the intermediate frequency device, and perform up-conversion filtering on the received combined signal and then send the combined signal to the opposite device; When the device is used to receive a signal, the radio frequency device is used to receive a combined signal, perform down-conversion filtering on the combined signal, and send the processed combined signal to the intermediate frequency device; the intermediate frequency device is used to separate the received combined signal to obtain a separated digital signal and a time-coordinated signal, directly output the separated time-coordinated signal, and demodulate and tap the separated digital signal and output it; The radio frequency device comprises a branch unit, a main combining unit, a first power amplifier unit, a backup combining unit, a second power amplifier unit, a quadruple unit, a second combining unit, a main combining unit, a first low-noise amplifying unit, a backup combining unit, and a second low-noise amplifying unit; When the device is used to transmit a signal, the branching unit is used to receive a combined signal sent by the intermediate frequency device, and to branch the combined signal into a first combined signal and a second combined signal, and to send the first combined signal to the combined main transmitting unit, and to send the second combined signal to the combined standby transmitting unit, the combined main transmitting unit amplifies and performs up-conversion processing on the first combined signal, and then sends it to the first power amplifier unit, the first power amplifier unit amplifies and filters the received combined signal, and then sends it to the quadruplex unit, the combined standby transmitting unit amplifies and performs up-conversion processing on the second combined signal, and then sends it to the second power amplifier unit, the second power amplifier unit amplifies and filters the received combined signal, and then sends it to the quadruplex unit, and the quadruplex unit sends the two received combined signals to the radio frequency device of the opposite end device; When the device is used to receive a signal, the quadruplex unit is used to send the received combined signal to the first low-noise amplifying unit and the second low-noise amplifying unit; the first low-noise amplifying unit amplifies the received combined signal and inputs it into the combined main receiving unit; the combined main receiving unit down-converts, filters and amplifies the received combined signal and inputs it into the second combining unit; the second low-noise amplifying unit amplifies the received combined signal and inputs it into the combined backup receiving unit; the combined backup receiving unit down-converts, filters and amplifies the received combined signal and inputs it into the second combining unit; the second combining unit combines the two received combined signals into one and sends it to the intermediate frequency device.

2. The device according to claim 1, characterized in that The intermediate frequency device includes a clock unit, a multiplexing modulation unit, a first combining unit, an intermediate frequency receiving unit and a demodulation tapping unit; When the device is used to transmit a signal, the clock unit is used to perform frequency division, frequency conversion and filtering on the received reference signal, and output the processed reference signal to the radio frequency device and the first combining unit; the multiplexing modulation unit is used to modulate the received digital signal to obtain a digital intermediate frequency modulation signal of a first frequency, and send the digital intermediate frequency modulation signal of the first frequency to the first combining unit; the first combining unit is used to receive a time-coordinated signal of a first frequency, and combine and filter the digital intermediate frequency modulation signal of the first frequency and the time-coordinated signal to obtain a combined signal of a second frequency, and send the combined signal to the radio frequency device; When the device is used to receive signals, the intermediate frequency receiving unit is used to receive the combined signal sent by the radio frequency device, filter and amplify the combined signal to obtain a separated time-coordinated signal and a digital intermediate frequency signal, directly output the separated time-coordinated signal, and send the separated digital intermediate frequency signal to the demodulation tapping unit. The demodulation tapping unit demodulates and taps the received digital intermediate frequency signal into a digital signal of bit information, and then outputs it after protocol analysis.

3. The device according to claim 2, characterized in that If the device is a master station device, the intermediate frequency receiving unit is further used to receive an analog signal of a third frequency sent by the radio frequency device, and perform frequency conversion, filtering and amplification processing on the received analog signal to obtain an analog signal of a fourth frequency, and directly output the analog signal of the fourth frequency; If the device is a secondary station device, the intermediate frequency device further includes a first analog signal sending unit, which is used to send the received analog signal to the radio frequency device.

4. The device according to claim 3, characterized in that If the device is a master station device, the radio frequency equipment further includes: a duplex unit, a third low-noise amplifying unit, an analog main receiving unit, a fourth low-noise amplifying unit, an analog standby receiving unit, and a third combining unit, wherein the duplex unit is used to receive an analog signal sent by an opposite-end device, and send the received analog signal to the third low-noise amplifying unit and the fourth low-noise amplifying unit, the third low-noise amplifying unit amplifies the received analog signal and inputs it into the analog main receiving unit, the analog main receiving unit down-converts, filters and amplifies the received analog signal and inputs it into the third combining unit, the fourth low-noise amplifying unit amplifies the received analog signal and inputs it into the analog standby receiving unit, the analog standby receiving unit down-converts, filters and amplifies the received analog signal and inputs it into the third combining unit, and the third combining unit combines the two received analog signals into one and sends it to the intermediate frequency device; If the device is a secondary station device, the radio frequency device further includes a second analog signal sending unit, which is used to receive the analog signal sent by the first analog signal sending unit and send the received analog signal to the radio frequency device of the opposite device.

5. The device according to claim 4, characterized in that If the device is a master station device, and the master station device communicates with n slave station devices, the radio frequency device further includes a power division unit; The power splitter unit is used to split the combined signal output by the first power amplifier unit into n identical combined signals, and send one of the combined signals to the quadplexer unit; The power splitter unit is further used to split the combined signal output by the second power amplifier unit into n identical combined signals, and send one of the combined signals to the quadplexer unit.

6. The device according to claim 5, characterized in that If the device is a master station device, and the master station device communicates with n slave station devices, then the intermediate frequency equipment includes n intermediate frequency receiving units. For each intermediate frequency receiving unit, the intermediate frequency receiving unit uniquely corresponds to one slave station, and is used to receive the combined signal and the analog signal sent by the slave station, and filter and amplify the received combined signal to obtain a separated time-coordinated signal and a digital intermediate frequency signal, directly output the separated time-coordinated signal, and send the separated digital intermediate frequency signal to the demodulation tapping unit, and perform frequency conversion, filtering and amplification on the received analog signal.

7. The device according to any one of claims 2 to 6, characterized in that The radio frequency equipment of the local device and the radio frequency equipment of the opposite device transmit signals through the horizontal polarization antenna of the dual-polarization antenna.

8. The device according to claim 7, characterized in that If the local device is a master station device, the radio frequency device of the local device receives the analog signal sent by the radio frequency device of the opposite device through the vertically polarized antenna of the dual-polarized antenna; if the local device is a slave station device, the radio frequency device of the local device sends the analog signal to the radio frequency device of the opposite device through the vertically polarized antenna of the dual-polarized antenna.

9. The device according to claim 7, characterized in that Each of the main combining unit, the main combining unit, the backup combining unit, the backup combining unit, and the intermediate frequency receiving unit also includes a delay equalization correction subunit. When the device communicates with the opposite device, the delay equalization correction subunit is used to control the total signal transmission delay between the device and the opposite device to be no greater than a preset delay. The signal transmission includes the transmission of a combined signal and / or the transmission of an analog signal.

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