CN201601667U - A Portable Scattering Communication Device - Google Patents

Abstract

The utility model discloses a portable scattering communication device, which relates to medium and small-capacity scattering communication equipment in the field of scattering communication. It consists of high-frequency equipment, low-frequency equipment, user multiplexing equipment, antennas, etc. It adopts the split design of low-frequency equipment and two high-frequency equipment. The connection between the low-frequency equipment and the two high-frequency equipment uses an intermediate frequency cable that can be as long as 100 meters to complete the transmission of multiple frequency signals, which simplifies the implementation of equipment. The purpose of scatter communication. It has the advantages of high degree of integration, simple and convenient operation, stable and reliable performance, etc., and is especially suitable as a portable or fixed scatter communication device in a small-capacity scatter communication system.

Description

A Portable Scattering Communication Device

technical field

The utility model relates to a portable scatter communication device in the field of scatter communication, and is especially suitable for being a portable or fixed scatter communication device in a small-capacity scatter communication system.

Background technique

Due to the large size, complex structure and huge power consumption of traditional scattering communication devices, they basically adopt the application form of integrating multiple devices, and the distance between the connecting lines between the devices should not be too far, resulting in high equipment costs and poor mobility The disadvantages greatly limit the wide application of scattering communication in various fields.

Utility model content

The purpose of this utility model is to avoid the disadvantages of the above-mentioned background technology and provide a small-capacity, portable light scattering communication device. This utility model can be used not only for fixed use but also for mobile opening. One high-frequency equipment split design, the connection between the low-frequency equipment and two high-frequency equipment uses an intermediate frequency cable that can be as long as 100 meters, and adopts 8-fold space/frequency diversity technology, which not only makes the equipment economical, reliable and Mobility has been significantly improved compared with the past, and the adaptability of scattering communication equipment to complex geographical environments has been significantly increased. The utility model has the characteristics of small size, light weight, high degree of integration, easy operation and the like.

The purpose of this utility model is achieved in that it includes user multiplexing equipment, low-frequency equipment, the first high-frequency equipment, the second high-frequency equipment, the first antenna, the second antenna; wherein the user multiplexing equipment input port 1 and the external Voice sending port A is connected, input port 2 is connected with external asynchronous data sending port B, input port 3 is connected with external LAN data sending port C, output port 4 is connected with voice receiving port D, output port 5 is connected with external asynchronous data receiving port E Connection, output port 6 is connected to external LAN data receiving port F, output port 7 and input port 8 are respectively connected to input port 3 and output port 4 of the low-frequency device; input port 1 and output port 2 of the low-frequency device are respectively connected to the transmission of external service voice Port G and receiving port H, the input/output port 5 is connected to the input/output port 1 of the first high-frequency device, and the input/output port 6 is connected to the input/output port 1 of the second high-frequency device; the first high-frequency device 3 is input The pin 2 of the /output port is connected to the radio frequency input/output port 1 of the first antenna 5 through a radio frequency cable; the pin 2 of the input/output port of the second high frequency device is connected to the radio frequency input/output port 1 of the second antenna 6 through a radio frequency cable .

The low-frequency equipment of the utility model is composed of an auxiliary multiplexer, a modulator, a demodulator, a first intermediate amplifier, a second intermediate amplifier, a mixed transmission filter, a mixed transmission filter and a monitor. Among them, the input port 1 of the auxiliary multiplexer is connected to the sending port G of the external service call, the output port 2 is connected to the receiving port H of the external service call, the input port 3 and the output port 4 are respectively connected to the output port 7, the input port 8 of the user multiplexer, and the output Port 5 is connected to input port 1 of the modulator, input/output port 6 is connected to input/output port 1 of monitoring, input port 7 is connected to output port 1 of the demodulator; input/output port 2 of the modulator is connected to input/output of monitoring Port 2, input port 3 and output port 4 are respectively connected to the output port 2 and input port 3 of the mixed transmission filter, and output port 5 is connected to the input port 2 of the mixed transmission filter; the input/output port 2 of the demodulator is connected to the monitor Input/output port 5, input port 3 is connected to output port 4 of the mixed transmission filter, input port 4 is connected to output port 2 of the first intermediate amplifier, input port 5 is connected to output port 2 of the second intermediate amplifier; The input port 1 is connected to the output port 6 of the mixing filter; the input port 1 of the second intermediate amplifier is connected to the output port 3 of the mixing filter; the input/output port 1 of the mixing filter is connected to the monitoring input/output port 3, The input/output port 5 is connected to the input/output port 1 of the first high-frequency device; the input/output port 1 of the mixed transmission filter is connected to the input/output port 4 of the monitor, and the input/output port 6 is connected to the input of the second high-frequency device /Output port 1 pin.

The first high-frequency device of the utility model is composed of a mixed transmission filter, an up-converter, a frequency synthesizer, a power amplifier, a down-converter, a frequency synthesizer, a low-noise amplifier, a duplexer, a monitor, and a crystal oscillator. Among them, the input/output port 1 of the mixed transmission filter is connected to the input/output port 5 of the low-frequency equipment, the output port 2 is connected to the input port 1 of the up-converter, the input/output port 3 is connected to the monitoring input/output port 1, and the input port 4 Connect the output port 1 of the crystal oscillator, and the input port 5 is connected to the output port 1 of the down-converter; the input/output port 2 of the up-converter is connected to the input/output port 2 of the monitor, and the input port 3 is connected to the output port 3 of the frequency synthesizer; The input port 1 of the synthesizer is connected to the output port 2 of the crystal oscillator, and the input/output port 2 is connected to the input/output port 3 of the monitor; the output port 2 of the power amplifier is connected to the input port 1 of the duplexer; the input port 2 of the down converter Connect the output port 3 of the frequency synthesizer, and the input port 3 is connected to the output port 1 of the low-noise amplifier; the input port 1 of the frequency synthesizer is connected to the output port 3 of the crystal oscillator, and the input/output port 2 is connected to the input/output port 4 of the monitor; The input/output port 2 of the router is connected to the input/output port 1 of the first antenna through a radio frequency cable.

The utility model second high-frequency equipment is also made up of mixed transmission filter, up-converter, frequency synthesizer, power amplifier, down-converter, frequency synthesizer, low-noise amplifier, duplexer, monitoring and crystal oscillator, its circuit unit and The working principle is the same as that of the first high-frequency device.

Compared with the background technology, the utility model has the following advantages:

1. The utility model adopts the split design of the low-frequency equipment 2, the first high-frequency equipment 3, and the second high-frequency equipment 4. The low-frequency equipment 2, the first high-frequency equipment 3, and the second high-frequency equipment 4 are respectively connected by one The IF cable can be as long as 100 meters to complete the two-way transmission of IF signals, 10MHz, and monitoring signals, which simplifies the equipment and improves the performance. This design reduces the size and weight of a single device, facilitates the movement, installation and maintenance of the device, and increases the adaptability and flexibility of the device. The equipment can be used as a fixed station, or as a moving station and loading.

2. The utility model integrates a mixed transmission filter, an up-converter, a frequency synthesizer, a power amplifier, a down-converter, a frequency synthesizer, a low-noise amplifier, a duplexer, a monitor, and a crystal oscillator in the same high-frequency chassis. It greatly reduces the volume and weight of the traditional scattering communication system, and significantly improves the maneuverability of the equipment.

3. The main components of the utility model are made of large-scale field programmable devices, so the modification of the working parameters of the device can be flexibly implemented by configuring different programs to meet the requirements of different users.

4. The utility model adopts 8-fold diversity technology, which not only enhances the anti-fading ability of the communication system, but also simplifies the transceiver equipment in the communication system, saves costs, and is conducive to promoting the development of scattering communication equipment towards the direction of portability and miniaturization.

5. The utility model has high degree of integration, small size, light weight, stable and reliable performance, and convenient maintenance.

Description of drawings

Fig. 1 is the electrical principle block diagram of the utility model embodiment;

Fig. 2 is the electrical principle block diagram of the utility model low-frequency equipment 2 embodiment;

Fig. 3 is the electrical principle block diagram of the first high-frequency equipment 3 embodiment of the utility model;

Fig. 4 is a block diagram of the electrical principle of the embodiment of the second high-frequency device 4 of the present invention.

Detailed ways

With reference to Fig. 1 to Fig. 4, the utility model it comprises user reuse equipment 1, low-frequency equipment 2, the first high-frequency equipment 3, the second high-frequency equipment 4, the first antenna 5, the second antenna 6, Fig. 1 is this The electrical principle block diagram of the utility model, the embodiment connects the circuit according to Fig. 1. Among them, the function of the user multiplexing device 1 is to complete the multiplexing and decomposing function of 2-way voice, two-way asynchronous data and LAN data; the low-frequency device 2 completes the modulation and demodulation function of the scattered communication group transmission; the first high-frequency device 3 and The second high-frequency device 4 mainly completes the conversion function between the intermediate frequency signal and the radio frequency signal, and simultaneously receives and transmits signals for filtering and amplification. The first antenna 5 and the second antenna 6 are used for transmitting and receiving radio frequency signals.

The low-frequency equipment 2 of the utility model has three functions: one is to carry out intermediate frequency modulation on the group signal input by the user multiplexing equipment 1, and the modulated double frequency diversity intermediate frequency signal is divided into two routes and its output terminals 5 and 6 are input respectively. Input the first high-frequency equipment 3 and the second high-frequency equipment 4; the second is to demodulate the intermediate frequency signals from the first high-frequency equipment 3 and the second high-frequency equipment 4, and output the group signal to the user for multiplexing after demodulation Devices 1 and 3 monitor the first high-frequency device 3 and the second high-frequency device 4 . The low-frequency equipment 2 is composed of an auxiliary multiplexer 7, a modulator 8, a demodulator 9, a first intermediate amplifier 10, a second intermediate amplifier 11, a mixed transmission filter 12, a mixed transmission filter 13 and a monitor 14, as shown in Fig. 2 The electrical schematic diagram of the utility model low-frequency equipment 2, the embodiment connects the circuit according to Fig. 2. Among them, the group signal output by the user multiplexing device 1 is input to the auxiliary multiplexer 7, and the auxiliary multiplexer 7 multiplexes the service call and the group signal and then inputs it to the modulator 8, and the modulator 8 modulates the input signal and outputs it The two modulation signals are respectively sent to the mixed transmission filter 12 and the mixed transmission filter 13, and the mixed transmission filter 12 and the mixed transmission filter 13 output the intermediate frequency signal to the first high frequency device 3 and the second high frequency device 4 respectively; Two channels of receiving intermediate frequency signals from the first high frequency device 3 and the second high frequency device 4 are respectively input to the mixed transmission filter 12 and the mixed transmission filter 13, and the first intermediate amplifier 10 and the second intermediate frequency amplifier 11 respectively receive intermediate frequency signals. The signal is amplified by AGC, and the amplified received intermediate frequency signal enters the demodulator 9 for low-frequency demodulation, and the baseband signal output by the demodulator 9 is sent to the auxiliary multiplexer 7, and the auxiliary multiplexer 7 taps the baseband signal and transforms it into Duty voice signal and group signal, the duty voice signal is output to the duty phone, and the group signal is output to the user multiplexing device 1; the role of the monitoring 14 is to monitor the components in the low-frequency device 2, the high-frequency device 3 and the high-frequency device 4 Monitor; Mixed transmission filter 12 function one is to output the high-frequency equipment 3 through 5 pins after combining the monitoring signal from the monitoring 14 and the modulation signal from the modulator 8, and the second effect is to receive from the high-frequency equipment 3 by a The root intermediate frequency cable inputs the receiving intermediate frequency signal, crystal oscillator signal and monitoring signal, and outputs the receiving intermediate frequency signal to the intermediate amplifier 10, outputs the crystal oscillator signal to the modulator 8 and demodulator 9, and outputs the monitoring signal to the monitoring 14; mixed transmission The first function of the filter 13 is to combine the monitoring signal of the monitoring 14 with the intermediate frequency signal from the modulator 8 and output it to the high frequency device 4 through pin 5, and the second function is to receive the signal from the high frequency device 4 input by an intermediate frequency cable Receive the intermediate frequency signal, crystal oscillator signal and monitoring signal, and output the received intermediate frequency signal to the intermediate amplifier 11, and output the monitoring signal to the monitoring 14.

The first high-frequency device 3 of the utility model has three functions: one is to transfer the frequency spectrum from the low-frequency device 2 to the first antenna 5 after power amplification; the other is to receive the radio frequency from the first antenna 5 The signal is converted into an intermediate frequency signal and then input to the low frequency device 2 through its input/output port 1; the third is to provide a high stable crystal oscillator signal for the low frequency device 2 and accept its monitoring. Fig. 3 is the electrical schematic diagram of the first high-frequency device 3 of the present utility model, and the embodiment connects the circuit according to Fig. 3 . The first high-frequency device 3 is composed of a mixed transmission filter 15, an up-converter 16, a frequency synthesizer 17, a power amplifier 18, a down-converter 19, a frequency synthesizer 20, a low-noise amplifier 21, a duplexer 22, a monitor 23, and a crystal oscillator 24 compositions. Wherein the modulation signal output by the low-frequency device 2 is input to the mixing filter 15, and the mixing filter 15 inputs the modulation signal to the up-converter 16, and is mixed with the local oscillator signal generated by the frequency synthesizer 17 in the up-converter 16 Obtain the radio frequency signal, the radio frequency signal input power amplifier 18, the power amplifier 18 carries out power amplification to the radio frequency signal and inputs it into the duplexer 22, and the duplexer 22 outputs the signal to the antenna 5; the received radio frequency signal from the antenna 5 is input into the duplexer 22. The duplexer 22 inputs the signal into the low-noise amplifier 21, and the low-noise amplifier 21 performs low-noise amplification on the received radio frequency signal and outputs the amplified signal to the down-converter 19, and the amplified received radio-frequency signal is sent to the down-converter 19 The local oscillator signal produced by the frequency synthesizer 20 is mixed to obtain the received intermediate frequency signal, and the received intermediate frequency signal is input to the input/output port 5 of the low frequency device 2 by its input/output port 1 through the mixed transmission filter 15; the mixed transmission filter The first function of 15 is to combine the monitoring signal of monitoring 23, the receiving intermediate frequency signal from the down converter 19 and the crystal oscillator signal from the crystal oscillator 24 to output to the low frequency device 2 through pin 1, and the second function is to receive from the low frequency device 2 by a The monitoring signal and modulation signal input by the root intermediate frequency cable, and the modulation signal is output to the up-converter 16, and the monitoring signal is output to the monitoring 23; the function of the monitoring 23 is to monitor each component in the high-frequency equipment 3 and receive Monitoring of the device 2; the function of the crystal oscillator 24 is to provide a highly stable crystal oscillator signal for the frequency synthesizer 17, the frequency synthesizer 20 and the low frequency device 2.

The utility model second high-frequency equipment 4 circuit unit, working principle and effect are the same as the first high-frequency equipment 3, and Fig. 4 is the electric schematic diagram of the utility model second high-frequency equipment 4, and the second high-frequency equipment 4 is composed of a hybrid Transmission filter 25, up-converter 26, frequency synthesizer 27, power amplifier 28, down-converter 29, frequency synthesizer 30, low-noise amplifier 31, duplexer 32, monitoring 33, crystal oscillator 34, the embodiment is shown in Figure 4 Connect the lines.

The working principle of the utility model is as follows:

This system supports the transmission of 2 channels of voice switch subscriber trunk lines, 2 channels of asynchronous data and 1 channel of LAN services. At the originating end, the voice and data information are multiplexed into a group signal through the user multiplexing device 1, and the group signal is encrypted in the user multiplexing device 1, and the encrypted group signal is sent to the scattering communication low-frequency device 2 by the group port through a cable Group port; the auxiliary multiplexer of the scattered communication low-frequency equipment 2 converts the group signal into a digital signal, completes the signal modulation after differential coding, and outputs two in-band two-frequency BPSK modulation signals; the output two signals are respectively sent to the second A high-frequency device 3 and a second high-frequency device 4; the first high-frequency device 3 and the second high-frequency device 4 complete the spectrum shift from the intermediate frequency to the radio frequency, and amplify it to a certain power, and then send it to the first high-frequency device respectively An antenna 5 and a second antenna 6 emit.

At the receiving end, the first antenna 5 and the second antenna 6 both receive signals from the two antennas at the opposite end, and the signals reach the first high-frequency device 3 and the second high-frequency device 4 respectively through the feed source and the cable; the first high-frequency The high-frequency device 3 and the second high-frequency device 4 filter the received radio frequency signal, and then amplify the received signal with low noise, and the amplified signal is transformed into an intermediate frequency signal, which is respectively input to ports 5 and Port 6; in the low-frequency device 2, the intermediate frequency signal is amplified and demodulated to complete the baseband addition and combination of the eight-fold diversity signal; The group signal is output from the group port to the group port of the user multiplexing device 1, and the user multiplexing device 1 decrypts the group signal from the low-frequency device 2, completes the splitting process, and restores the voice and data signals.

The installation structure of the utility model is as follows: user multiplexing equipment (1) and low-frequency equipment (2) chassis adopt 19 "standard chassis, and the first high-frequency equipment (3) and the second high-frequency equipment (4) adopt sealed chassis. User complex The external dimensions (length × width × height) of the equipment (1) are 483mm × 425mm × 44mm, and the external dimensions (length × width × height) of the low-frequency equipment (2) are 483mm × 425mm × 222mm. The high-frequency equipment (3), height The frequency equipment (4) adopts a sealed case, and its external dimensions (length×width×height) are 400mm×470mm×240mm.

The high-frequency equipment can be used on the antenna pole, and all equipment connection ports are on the rear panel, connected by rear wiring, and the assembly cost is practical.

Claims (4)

1. lightweight scatter communication device, it comprises user's multiplexing equipment (1), first antenna (5), second antenna (6), it is characterized in that: also comprise low frequency equipment (2), first high-frequency apparatus (3), second high-frequency apparatus (4); Wherein user's multiplexing equipment (1) input port 1 is connected with outside speech transmit port A, input port 2 is connected with external asynchronous data sending terminal mouth B, input port 3 is connected with outside lan data transmit port C, output port 4 is connected with speech receiving port D, output port 5 is connected with external asynchronous Data Receiving port E, output port 6 is connected with outside lan data receiving port F, and output port 7 and input port 8 pin are connected the input port 3 and the output port 4 of low frequency equipment (2) respectively; Low frequency equipment (2) input port 1, output port 2 connect the transmit port G and the receiving port H of outside duties speech respectively, input/output end port 5 connects the input/output end port 1 of first high-frequency apparatus (3), and input/output end port 6 connects the input/output end port 1 of second high-frequency apparatus (4); High-frequency apparatus (3) input/output end port 2 pin link to each other by the radio frequency input/output end port 1 of radio frequency cable with first antenna (5); Input/output end port 2 pin of second high-frequency apparatus (4) link to each other by the radio frequency input/output end port 1 of radio frequency cable with second antenna (6).

2. a kind of lightweight scatter communication device according to claim 1 is characterized in that: low frequency equipment (2) puts (11) by putting in auxiliary multiplexer (7), modulator (8), the demodulator (9), first in (10), second, mix to pass filter (12), mix and pass filter (13) and monitoring (14) is formed; Wherein the input port 1 of auxiliary multiplexer (7) connects outside duties words transmit port G, its output port 2 connects outside duties words receiving port H, its input port 3 is connected user's multiplexing equipment (1) output port 7 and input port 8 respectively with output port 4, its output port 5 connects the input port 1 of modulator (8), input/output end port 6 connects the input/output end port 1 of monitoring (14), and its input port 7 connects the output port 1 of demodulator (9); The input/output end port 2 of modulator (8) connects the input/output end port 2 of monitoring (14), its input port 3 is connected output port 2 and the input port 3 that mixes biography filter (12) respectively with output port 4, and its output port 5 connects the input port 2 that mixes biography filters (13); The input/output end port 2 of demodulator (9) connects the input/output end port 5 of monitoring (14), its input port 3 connects the output port 4 that mixes biography filter (12), its input port 4 connects the output port 2 of putting (10) in first, and its input port 5 connects the output port 2 of putting (11) in second; The input port 1 of putting (10) in first connects the output port 6 that mixes biography filter (12); The input port 1 of putting (11) in second connects the output port 3 that mixes biography filter (13); Mix the input/output end port 3 that the input/output end port 1 that passes filter (12) connects monitoring (14), its input/output end port 5 connects the input/output end port 1 of first high-frequency apparatus (3); Mix the input/output end port 4 that the input/output end port 1 that passes filter (13) connects monitoring (14), its input/output end port 6 connects the input/output end port 1 of second high-frequency apparatus (4).

3. a kind of lightweight scatter communication device according to claim 1 and 2 is characterized in that: first high-frequency apparatus (3) is made up of mixed biography filter (15), upconverter (16), frequency synthesizer (17), power amplifier (18), low-converter (19), frequency synthesizer (20), LNA (21), duplexer (22), monitoring (23), crystal oscillator (24); Wherein mix the input/output end port 5 that the input/output end port 1 that passes filter (15) connects low frequency equipment (2), its output port 2 connects the input port 1 of upconverter (16), its input/output end port 3 connects the input/output end port 1 of monitoring (23), its input port 4 connects the output port 1 of crystal oscillator (24), and its input port 5 connects the output port 1 of low-converter (19); The input/output end port 2 of upconverter (16) connects the input/output end port 2 of monitoring (23), and its input port 3 connects the output port 3 of frequency synthesizer (17), and its output port 4 pin connect the input port 1 of power amplifier (18); The input port 1 of frequency synthesizer (17) connects the output port 2 of crystal oscillator (24), and its input/output end port 2 connects the input/output end port 3 of monitoring (23); The output port 2 of power amplifier (18) connects the input port 1 of duplexer (22); The input port 2 of low-converter (19) connects the output port 3 of frequency synthesizer (20), and its input port 3 connects the output port 1 of LNA (21); The input port 1 of frequency synthesizer (20) connects the output port 3 of crystal oscillator (24), and its input/output end port 2 connects the input/output end port 4 of monitoring (23); The input port 2 of LNA (21) connects the output port 3 of duplexer (22); Duplexer (22) input/output end port 2 link to each other by the input/output end port 1 of radio frequency cable with antenna (5).

4. a kind of lightweight scatter communication device according to claim 3 is characterized in that: second high-frequency apparatus (4) is made up of mixed biography filter (25), upconverter (26), frequency synthesizer (27), power amplifier (28), low-converter (29), frequency synthesizer (30), LNA (31), duplexer (32), monitoring (33), crystal oscillator (34); Wherein mix the input/output end port 6 that the input/output end port 1 that passes filter (25) connects low frequency equipment (2), its output port 2 pin connect the input port 1 of upconverter (26), its input/output end port 3 pin connect the input/output end port 1 of monitoring (33), its input port 4 connects the output port 1 of crystal oscillator (34), and its input port 5 connects the output port 1 of low-converter (29); The input/output end port 2 of upconverter (26) connects the input/output end port 2 of monitoring (33), and its input port 3 connects the output port 3 of frequency synthesizer (27), and its output port 4 pin connect the input port 1 of power amplifier (28); The input port 1 of frequency synthesizer (27) connects the output port 2 of crystal oscillator (34), and its input/output end port 2 connects the input/output end port 3 of monitoring (33); The output port 2 of power amplifier (28) connects the input port 1 of duplexer (32); The input port 2 of low-converter (29) connects the output port 3 of frequency synthesizer (30), and its input port 3 connects the output port 1 of LNA (31); The input port 1 of frequency synthesizer (30) connects the output port 3 of crystal oscillator (34), and its input/output end port 2 connects the input/output end port 4 of monitoring (33); The input/output end port 2 of duplexer (32) links to each other by the input/output end port 1 of radio frequency cable with second antenna (6).

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