A radio station wireless relay forwarding device
By designing radio wireless relay forwarding equipment, using dual-link ultra-short wave communication link and relay control unit, the problems of insufficient communication distance and unstable relay communication are solved, and efficient long-distance communication coverage is achieved.
Patent Information
- Application Number
- CN202421543022.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-07-02
AI Technical Summary
When existing equipment uses ultra-short wave radio communication, it is affected by the earth's curvature, and the communication distance is insufficient, and the ground relay communication is greatly affected by environmental and terrain factors, and the expansion range is unstable.
Design a radio wireless relay forwarding device, adopting dual-link ultra-short wave communication link and relay control unit routing network management, and realizes ultra-short wave and short-wave link data relay forwarding communication functions.
Through the combination of dual-link radio frequency link and relay control unit, effective filtering and noise suppression of radio frequency signals are realized, communication selectivity and anti-interference ability are improved, and long-distance communication coverage requirements are met.
Smart Images
Figure CN222750438U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of radio communication, in particular to radio wireless relay forwarding equipment. Background Art
[0002] In existing equipment, when ultra-short wave radio is used for communication, the communication distance is insufficient due to the influence of the earth's curvature. At present, the effective means to increase the communication distance is through relay communication, but ground relay communication is greatly affected by factors such as environment and terrain. In actual use, the effective extension range varies greatly and is unstable. Utility Model Content
[0003] In view of the problems in the prior art, the utility model provides a radio station wireless relay forwarding device, which aims to utilize the overall architecture of dual-link ultra-short wave communication links and relay control unit routing networking management to realize ultra-short wave and short wave link data relay forwarding communication functions and meet the long-distance communication coverage requirements.
[0004] A radio station wireless relay forwarding device comprises a relay control unit and two wireless radio frequency links connected to the relay control unit, wherein the wireless radio frequency links are provided with a service unit, a channel unit, a radio frequency unit, a co-site filter and an antenna connected in sequence; the service unit is used to complete modulation and demodulation, encoding and decoding functions, data service processing and timing control of baseband signals; the channel unit is used to provide a radio frequency local oscillator of a superheterodyne receiver and realize spectrum shifting, filtering and amplification of signals; the radio frequency unit is used to realize switching of transceiver paths and amplification and filtering of radio frequency signals; the co-site filter is used to filter out out-of-band noise; and the relay control unit is used to realize audio, data processing and relay forwarding of the service units in the two wireless radio frequency links.
[0005] Further: the radio frequency unit includes a bandpass filter, and a signal receiving path and a signal sending path are arranged between the bandpass filter and the co-address filter, the signal input end of the signal receiving path and the signal output end of the signal sending path are both connected to the co-address filter through a first three-way switching switch, and the signal output end of the signal receiving path and the signal input end of the signal sending path are both connected to the bandpass filter through a second three-way switching switch; the first three-way switching switch and the second three-way switching switch are both controlled by the business unit.
[0006] Further, the signal receiving path includes a first low noise amplifier, a second bandpass filter and a second low noise amplifier connected in sequence, the first low noise amplifier is connected to a first three-way switch, and the second low noise amplifier is connected to a second three-way switch.
[0007] Further, the signal transmission path includes a preamplifier, a radio frequency amplifier, a final amplifier and a harmonic filter connected in sequence, the harmonic filter is connected to a first three-way switch, and the preamplifier is connected to a second three-way switch.
[0008] Further: the channel unit includes a third three-way switching switch connected to the radio frequency unit, a second signal receiving path and a second signal sending path are set between the third three-way switching switch and the business unit, the second signal receiving path includes a second radio frequency amplifier, a mixer, a low-pass filter, a first intermediate frequency amplifier, an acoustic surface filter and a baseband amplifier connected in sequence, the second radio frequency amplifier is connected to the third three-way switching switch, and the baseband amplifier is connected to the business unit; the second signal sending path includes a acoustic surface filter, a second intermediate frequency amplifier, a low-pass filter, a mixer, a third radio frequency amplifier and a third bandpass filter connected in sequence, the acoustic surface filter in the second signal sending path is connected to the business unit, and the third bandpass filter is connected to the third three-way switching switch; the third three-way switching switch is controlled by the business unit.
[0009] Further: the second signal receiving path and the second signal sending path share a mixer, a low-pass filter and a surface acoustic wave filter; the second RF amplifier, the third RF amplifier and the mixer are connected via a fourth three-way switching switch; the low-pass filter, the first intermediate frequency amplifier and the second intermediate frequency amplifier are connected via a fifth three-way switching switch; the surface acoustic wave filter, the first intermediate frequency amplifier and the second intermediate frequency amplifier are connected via a sixth three-way switching switch; the surface acoustic wave filter, the service unit and the baseband amplifier are connected via a seventh three-way switching switch; and the fourth three-way switching switch, the fifth three-way switching switch, the sixth three-way switching switch and the seventh three-way switching switch are all controlled by the service unit.
[0010] The beneficial effects of the utility model are as follows: by setting up two wireless radio frequency links in the relay control unit, the wireless radio frequency links realize filtering of the receiving and transmitting signals, and can effectively suppress the harmonics and non-harmonics generated by the transmitter, improve the noise performance, reduce mutual interference in the same vehicle, and improve the ability of the radio station to work at the same location in the same vehicle; at the same time, when the radio station wireless relay forwarding device is in the receiving state, the co-site filter is connected to improve the selectivity of the receiving path and avoid blocking interference. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural block diagram of the utility model;
[0012] Figure 2 This is a block diagram of the working principle of the radio frequency unit in the utility model;
[0013] Figure 3 This is a block diagram of the working principle of the channel unit in the utility model. DETAILED DESCRIPTION
[0014] The utility model is described in detail below in conjunction with the accompanying drawings. The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be interpreted as limiting the utility model. The directional terms such as left, middle, right, top, and bottom in the embodiments of the utility model are only relative concepts or are based on the normal use state of the product, and should not be considered as restrictive.
[0015] A radio wireless relay forwarding device, such as Figure 1 As shown, it includes a power supply system, a relay control unit and two wireless radio frequency links connected to the relay control unit. The wireless radio frequency links are provided with a business unit, a channel unit, a radio frequency unit, a co-site filter and an antenna connected in sequence; the business unit is used to control the business unit and the channel unit and complete the modulation and demodulation, encoding and decoding functions, data business processing and timing control of the baseband signal; the co-site filter is used to filter out out-of-band noise; the relay control unit is used to realize the audio, data processing and relay forwarding of the business units in the two wireless radio frequency links; the power supply system completes the voltage supply of each unit of the wireless relay forwarding equipment.
[0016] Among them, the co-site filter is a 10W co-site filter, combined with Figure 2 As shown, the radio frequency unit includes a bandpass filter, and a signal receiving path and a signal sending path are arranged between the bandpass filter and the co-site filter. The signal input end of the signal receiving path and the signal output end of the signal sending path are both connected to the co-site filter through a first three-way switch K1, and the signal output end of the signal receiving path and the signal input end of the signal sending path are both connected to the bandpass filter through a second three-way switch K2; the first three-way switch K1 and the second three-way switch K2 are both controlled by the business unit; the signal receiving path includes a first low-noise amplifier, a second bandpass filter and a second low-noise amplifier connected in sequence, the first low-noise amplifier is connected to the first three-way switch K1, and the second low-noise amplifier is connected to the second three-way switch K2; the signal sending path includes a preamplifier, two radio frequency amplifiers, a final amplifier and a harmonic filter connected in sequence, the harmonic filter is connected to the first three-way switch K1, and the preamplifier is connected to the second three-way switch K2; thereby, it is used to realize the switching of the transceiver path and the amplification and filtering of the radio frequency signal; the co-site filter can improve the selectivity and anti-blocking ability of the received signal, and suppress the broadband noise and transmission intermodulation of the transmitted signal;
[0017] Combination Figure 3As shown, the channel unit includes a third three-way switch K3 connected to the radio frequency unit, and a second signal receiving path and a second signal sending path are set between the third three-way switch K3 and the service unit. The second signal receiving path includes a second radio frequency amplifier, a mixer, a low-pass filter, a first intermediate frequency amplifier, a surface acoustic wave filter and a baseband amplifier connected in sequence. The second radio frequency amplifier is connected to the third three-way switch K3, and the baseband amplifier is connected to the service unit; the second signal sending path includes a surface acoustic wave filter, a second intermediate frequency amplifier, a low-pass filter, a mixer, a third radio frequency amplifier and a third band-pass filter connected in sequence. The mixer is provided with a radio frequency local oscillator. The surface acoustic wave filter in the second signal sending path is connected to the service unit, and the third band-pass filter is connected to the third three-way switch K3; the third three-way switch K3 is connected by the service unit. Unit control; to save costs, the second signal receiving path and the second signal sending path share a mixer, a low-pass filter and a surface acoustic wave filter; the second RF amplifier, the third RF amplifier and the mixer are connected via a fourth three-way switch K4; the low-pass filter, the first intermediate frequency amplifier and the second intermediate frequency amplifier are connected via a fifth three-way switch K5; the surface acoustic wave filter, the first intermediate frequency amplifier and the second intermediate frequency amplifier are connected via a sixth three-way switch K6; the surface acoustic wave filter, the service unit and the baseband amplifier are connected via a seventh three-way switch K7; the fourth three-way switch K4, the fifth three-way switch K5, the sixth three-way switch K6 and the seventh three-way switch K7 are all controlled by the service unit; thereby providing the RF local oscillator of the superheterodyne receiver and realizing the spectrum shifting, filtering and amplification of the signal;
[0018] When the wireless RF link is in receiving mode, the RF signal received by the antenna is filtered out of the out-band noise through a co-site filter, and then undergoes low-noise amplification, tuning filtering, down-conversion and RF amplification by the RF unit and channel unit, and is sent to the service unit and demodulated into voice and data information; when the wireless RF link is in transmitting mode, the service unit modulates the data or voice into a baseband signal, sends it to the channel unit, and then undergoes up-conversion, filtering and amplification by the RF unit, and is sent to the antenna for transmission.
[0019] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A radio station wireless relay forwarding device, characterized in that: It includes a relay control unit and two wireless radio frequency links connected to the relay control unit, wherein the wireless radio frequency links are provided with a service unit, a channel unit, a radio frequency unit, a co-location filter and an antenna connected in sequence; The service unit is used to complete the modulation and demodulation, encoding and decoding functions, data service processing and timing control of the baseband signal; the channel unit is used to provide the RF local oscillator of the superheterodyne receiver and realize the spectrum shifting, filtering and amplification of the signal; the RF unit is used to realize the switching of the transmit and receive channels and the amplification and filtering of the RF signal; the co-site filter is used to filter out the out-of-band noise; the relay control unit is used to realize the audio, data processing and relay forwarding of the service units in the two wireless RF links.
2. The radio station wireless relay forwarding device according to claim 1, characterized in that: The radio frequency unit includes a bandpass filter, and a signal receiving path and a signal sending path are arranged between the bandpass filter and the co-address filter. The signal input end of the signal receiving path and the signal output end of the signal sending path are both connected to the co-address filter through a first three-way switching switch, and the signal output end of the signal receiving path and the signal input end of the signal sending path are both connected to the bandpass filter through a second three-way switching switch; the first three-way switching switch and the second three-way switching switch are both controlled by the business unit.
3. The radio station wireless relay forwarding device according to claim 2, characterized in that: The signal receiving path includes a first low noise amplifier, a second band pass filter and a second low noise amplifier connected in sequence. The first low noise amplifier is connected to a first three-way switch, and the second low noise amplifier is connected to a second three-way switch.
4. The radio station wireless relay forwarding device according to claim 2, characterized in that: The signal transmission path includes a preamplifier, a radio frequency amplifier, a final amplifier and a harmonic filter which are connected in sequence. The harmonic filter is connected to a first three-way switch, and the preamplifier is connected to a second three-way switch.
5. The radio station wireless relay forwarding device according to claim 1, characterized in that: The channel unit includes a third three-way switching switch connected to the radio frequency unit, and a second signal receiving path and a second signal sending path are set between the third three-way switching switch and the business unit. The second signal receiving path includes a second radio frequency amplifier, a mixer, a low-pass filter, a first intermediate frequency amplifier, an acoustic surface filter and a baseband amplifier connected in sequence. The second radio frequency amplifier is connected to the third three-way switching switch, and the baseband amplifier is connected to the business unit; the second signal sending path includes a acoustic surface filter, a second intermediate frequency amplifier, a low-pass filter, a mixer, a third radio frequency amplifier and a third bandpass filter connected in sequence. The acoustic surface filter in the second signal sending path is connected to the business unit, and the third bandpass filter is connected to the third three-way switching switch; the third three-way switching switch is controlled by the business unit.
6. The radio station wireless relay forwarding device according to claim 5, characterized in that: The second signal receiving path and the second signal sending path share a mixer, a low-pass filter and a surface acoustic wave filter; the second RF amplifier, the third RF amplifier and the mixer are connected via a fourth three-way switch; the low-pass filter, the first intermediate frequency amplifier and the second intermediate frequency amplifier are connected via a fifth three-way switch; the surface acoustic wave filter, the first intermediate frequency amplifier and the second intermediate frequency amplifier are connected via a sixth three-way switch; the surface acoustic wave filter, the service unit and the baseband amplifier are connected via a seventh three-way switch; and the fourth three-way switch, the fifth three-way switch, the sixth three-way switch and the seventh three-way switch are all controlled by the service unit.