CN208862154U - Uplink antenna in space base relayed communications enhancing system - Google Patents
Uplink antenna in space base relayed communications enhancing system Download PDFInfo
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- CN208862154U CN208862154U CN201820943932.3U CN201820943932U CN208862154U CN 208862154 U CN208862154 U CN 208862154U CN 201820943932 U CN201820943932 U CN 201820943932U CN 208862154 U CN208862154 U CN 208862154U
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Abstract
The utility model belongs to wireless communication technology field, and in particular to the uplink antenna in a kind of space base relayed communications enhancing system, in order to realize in enhancing wide area, the beyond-the-horizon communication ability of more ultrashort wave radio set users.It is characterized by: it includes spiral winding and reflecting plate；It is characterized by: the spiral winding uses cone-type spiral structure, lower end is fixed on reflecting plate；Monobrachial spiral antenna high 5.586m, maximum gauge 2.26m, minimum diameter 0.5m, helical angle are 14 °, reflect board diameter 4.4m.The application demand of the utility model is enhanced the communication in certain area, the emulation measuring and calculating carried out through the gain to each frequency point, gain minimum value are 1.4dB, maximum value 5.3dB, gain effect meets application demand, and aerial signal receives and converted signals forwarding problems are resolved.
Description
Technical field
The utility model belongs to wireless communication technology field, and in particular to upper in a kind of space base relayed communications enhancing system
Row antenna.
Background technique
1.1 application background
With mobile communication technology at home continuous universal, due to setting up for land mobile base station, in city, small towns etc.
Densely inhabited district realizes all standing of movable signal substantially.However in recent years, emergency event takes place frequently, severe natural calamity
Appearance huge damage is caused to the life security of social stability and people, in multiple disaster, based on static infrastructure
Communication system and network and power supply system are by serious destruction, or even paralysis comprehensively, in the prime time of emergency disaster relief
In, the communication linkage of minimum standard is difficult to set up, emergency management and rescue unit and disaster area internal staff confusing communication, it is difficult to aid decision
Take rescue measure.In addition, China's overocean communications network construction is there are also to be improved, fishing boat, maritime patrol ship go to sea after means of communication
It is extremely limited, once it is in an emergency or monitors important information, it is difficult to situation is fed back at the first time.Therefore, I
State is very urgent for the demand of land emergency response communication and overocean communications.
In order to cope with the demand, also occur some relaying countermeasures for emergency communication, example in actual life in succession
Such as Extemporaneous distribution satellite communication equipment, the communication relay that particular device is carried out using unmanned plane.But practical situations
Be: requirement of the satellite communication to equipment is very harsh, and expensive, it is difficult to a large amount of universal；For existing UAV Communication
For trunking scheme, the relaying load business function on unmanned plane is single, and the civil intercom largely used, radio station etc. are common
Wireless telecom equipment can not connection, versatility is poor.In consideration of it, this patent is towards civil a large amount of existing ultrashort wave devices, base
In unmanned aerial vehicle platform, the problem of fully considering isolation between transmitting and receiving antenna, to being detectd based on skill and the space base relayed communications of frequency conversion thought
Two kinds of antennas of enhancing system are designed respectively.Wherein uplink antenna is located at aerial signal forwarding subsystem, mainly to region
L frequency range (1.35G-1.85GHz) electric wave that interior VHF (30M-88MHz) electric wave detect after receipts and frequency conversion is forwarded.In order to
Larger range of ground communication covers under the conditions of realizing the smaller transmission power of load, and this patent uses single coil configuration cone
Directional aerial increases the directionality and signal gain of antenna, effectively solves in a certain range, telecommunication is to signal strength
Demand.
1.2 prior arts and its advantage and disadvantage
Antenna is important component in wireless communication system, is responsible for the transmitting-receiving to electromagnetic wave and carries out gain, configuration is set
Meter receives and dispatches frequency range on it, gain performance influences greatly.Antenna directivity design influences greatly antenna performance, and difference is directly led
The radiation or ability to accept for causing antenna different to space.Antenna is divided into two kinds of omnidirectional and orientation.
Omnidirectional antenna shows as 360 ° of all homogeneous radiations on figure in the horizontal direction, i.e., non-directional.Lobe under normal circumstances
Width is smaller, and gain is bigger.One class of applications distances is close in a communications system for omnidirectional antenna, and coverage area is big, low in cost.Orientation
Antenna shows as certain angle range of radiation on figure in the horizontal direction, i.e., directional.The same with omnidirectional antenna, lobe width is got over
Small, gain is bigger.Directional aerial is generally used for that communication distance is remote, and coverage area is small in communication system, and target density is big, frequency
The high environment of utilization rate.For directional aerial, the region of omnidirectional antenna wave radiation is bigger, but cost is its increasing to signal
Benefit it is weaker, can not priority support specify region in important traffic.Although directionality is stronger, the range of radiation has directional aerial
Limit.Therefore, when being designed to antenna, it need to fully consider that practical application scene selects the configuration of antenna.
Helical antenna is the antenna with spiral shape being made into metal with good conductivity, the allusion quotation as directional aerial
Type represents, and the advantages of due to its circular polarisation, wave beam wide bandwidth, is widely used in satellite communication, in personal mobile communications.Spiral day
Line is divided into single-screw antenna and dual spiral antenna, and single-screw antenna includes tapered auger antenna, flat helical antenna, cylinder again
Shape helical antenna etc. is a variety of.Since the power that unmanned plane is supplied to load is extremely limited, need to the greatest extent may be used in limited power amplifier power
Gain can be improved to the signal in range, therefore selects directional aerial.In addition, it is contemplated that the load load-bearing of unmanned plane, unmanned plane with
The conformal design of loaded antennas, patent have selected more section space-efficient Monobrachial spiral antenna as aerial loaded antennas.
Utility model content
The purpose of this utility model be in order to realize in enhancing wide area, the over the horizon of more ultrashort wave radio set users it is logical
Letter ability, devising to detect based on skill enhances system with the space base relayed communications of frequency conversion forwarding thought, which is divided into aerial signal
It forwards subsystem and ground signal to forward subsystem two parts, respectively empty, ground signal receive and frequency conversion forwards.It is different
The Antenna Design of subsystem largely affects the ability of whole system communication enhancing.
The utility model is designed for the uplink antenna in aerial signal forwarding subsystem, which is located at unmanned plane
Relaying load on, be responsible for detecing the signal received uplink VHF signal and down forward L frequency range.To reinforce antenna as far as possible to specified
The transmitting-receiving gain of signal in region, patent is in the base for fully considering the load-carrying of antenna directivity, unmanned plane, power consumption and conformal design
It is that space utilization rate is high, directionality is good, wave beam bandwidth single armed by the Antenna Design for being located at aerial signal forwarding subsystem on plinth
Helical antenna.The Patent design specific size of antenna, configuration, and using software modeling and simulating and performance evaluation are carried out to it,
Space base relayed communications enhancing system can be better meet, receipts and forwarding demand are detectd to the signal of multi-user, so that potential solve one
In range of fixing time, in specific region due to communicating problem caused by lacking ground communication relay system, to calamity nearly rescue, sea
Communication support under the scenes such as upper operation, battlefield depopulated zone, anti-terrorism stability maintenance is of great significance.
The utility model is realized in this way:
A kind of uplink antenna in space base relayed communications enhancing system, including spiral winding and reflecting plate；It is characterized by:
The spiral winding uses cone-type spiral structure, and lower end is fixed on reflecting plate；The high 5.586m of Monobrachial spiral antenna, it is maximum
Diameter 2.26m, minimum diameter 0.5m, helical angle are 14 °, reflect board diameter 4.4m.
The uplink antenna port input return loss is respectively less than -7.4dB, voltage standing wave ratio in 30-88MHz bandwidth range
Less than 2.5.
When the uplink antenna working frequency is 75MHz, radiation gain minimum value is 1.4dB；When working frequency is 45MHz,
Radiation gain maximum value is 5.3dB.
The beneficial effects of the utility model are:
The application demand of the utility model is enhanced the communication in certain area, and the power amplifier function of load is limited to
Rate, uplink antenna must improve gain to the signal in range as far as possible in limited power, therefore select directional aerial.This
Outside, it is contemplated that the load load-bearing of unmanned plane, the conformal design of unmanned plane and loaded antennas have selected more to save space-efficient single armed
Helical antenna is as aerial loaded antennas.The emulation measuring and calculating carried out through the gain to each frequency point, gain minimum value are 1.4dB,
Maximum value is 5.3dB, and gain effect meets application demand (when carrying out radio wave propagation link budget, according to antenna gain 0dBi
Calculated), aerial signal receives and converted signals forwarding problems are resolved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the uplink antenna in the space base relayed communications enhancing system of the utility model；
Fig. 2 is the S11 simulation result curve of the uplink antenna in the space base relayed communications enhancing system of the utility model；
Fig. 3 is the VSWR simulation result curve of the uplink antenna in the space base relayed communications enhancing system of the utility model；
Fig. 4 is the main frequency point of the uplink antenna in the space base relayed communications enhancing system of the utility model in 0 degree of direction
Gain curve.
Wherein: 1. spiral windings, 2. reflecting plates.
Specific embodiment
The utility model is described further with reference to the accompanying drawings and examples.
It is by aerial signal forwarding subsystem and ground signal forwarding point based on the space base relayed communications enhancing system that skill is detectd
Two parts of uniting form, and wherein the former realizes aerial load and forwards to the frequency conversion for detecing receipts and L frequency band signals of VHF frequency band signals,
The latter realizes ground installation and forwards to the reception of L frequency band signals and the frequency conversion of VHF frequency band signals.
In order to solve the problems, such as isolation between transmitting and receiving antenna in air platform relay load, it is ensured that without significantly with frequency between receiving and transmitting signal
Interference.Antenna is divided into the uplink antenna in aerial signal forwarding subsystem and is located at ground signal by patent forwards subsystem
Uplink/downlink antenna two parts.Calculated according to relative bandwidth BW=(fh-fl)/f0 it is found that uplink band linear polarized antenna it is opposite
Bandwidth BW ≈ 98%, to obtain the antenna positioned at aerial platform more under the premise of saving space, enhancing directionality as far as possible
Stable radiation direction and higher gain, a kind of uplink antenna of Monobrachial spiral of Patent design, antenna structure such as Fig. 1 institute
Show.
The utility model devises the Monobrachial spiral directional aerial that a kind of working frequency range is located at 30MHz -88MHz, the antenna
In the relaying load of aerial signal forwarding subsystem.In order to meet the bandwidth of operation requirement of design requirement, patent is using cone
Shape helical structure, the i.e. radius of spin increase with the increase of circle number.Emulation is optimized to the Monobrachial spiral antenna, is optimized
Monobrachial spiral antenna afterwards high about 5.586m, maximum gauge 2.26m, minimum diameter 0.5m, helical angle are 14 °, reflect board diameter
4.4m.Antenna simulation result is as shown in Figures 2 and 3.
Fig. 2 and Fig. 3 is port match characteristic schematic diagram, and the helical antenna port under the size it can be seen from upper figure is defeated
Enter return loss and be respectively less than -7.4dB in 30-88MHz bandwidth range, voltage standing wave ratio less than 2.5 (antenna transmission power >
81.6%), meet requirement of the station telecommunication to antenna standing wave ratio.
It is successively 35MHz, 45MHz, 55MHz, 60MHz, 65MHz, aerial radiation when 75MHz, 85MHz to working frequency
Gain is emulated, the results show that the aerial radiation gain minimum value is 1.4dB, is located at 75MHz, radiation gain is maximum
Value is 5.3dB, is located at 45MHz, gain curve of the main frequency point in 0 degree of direction is as shown in Figure 4.From the point of view of comprehensive simulating result,
The gain effect of helical antenna is preferable, meets demand, and it is more stable in the astronomical phenomena radiation direction compared with low-frequency range, gain compared with
By force, as frequency increases, then there is the probability to distort increase in radiation direction, and gain effect is also weakened.
The application demand of the utility model is enhanced the communication in certain area, and the power amplifier function of load is limited to
Rate, uplink antenna must improve gain to the signal in range as far as possible in limited power, therefore select directional aerial.This
Outside, it is contemplated that the load load-bearing of unmanned plane, the conformal design of unmanned plane and loaded antennas have selected more to save space-efficient single armed
Helical antenna is as aerial loaded antennas.The emulation measuring and calculating carried out through the gain to each frequency point, gain minimum value are 1.4dB,
Maximum value is 5.3dB, and gain effect meets application demand (when carrying out radio wave propagation link budget, according to antenna gain 0dBi
Calculated), aerial signal receives and converted signals forwarding problems are resolved.
It is explained in detail above in conjunction with implementation method of the embodiment to the utility model, but the utility model and unlimited
In above-described embodiment, within the knowledge of a person skilled in the art, the utility model can also not departed from
Various changes can be made under the premise of objective.The content being not described in detail in the utility model specification can use existing skill
Art.
Claims (3)
1. the uplink antenna in a kind of space base relayed communications enhancing system, including spiral winding (1) and reflecting plate (2)；Its feature
Be: the spiral winding (1) uses cone-type spiral structure, and lower end is fixed on reflecting plate (2)；Monobrachial spiral antenna is high
5.586m, maximum gauge 2.26m, minimum diameter 0.5m, helical angle are 14 °, reflecting plate (2) diameter 4.4m.
2. the uplink antenna in space base relayed communications enhancing system according to claim 1, it is characterised in that: the uplink day
Line end mouth input return loss is respectively less than -7.4dB in 30-88MHz bandwidth range, and voltage standing wave ratio is less than 2.5.
3. the uplink antenna in space base relayed communications enhancing system according to claim 1, it is characterised in that: the uplink day
When line working frequency is 75MHz, radiation gain minimum value is 1.4dB；When working frequency is 45MHz, radiation gain maximum value is
5.3dB。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820943932.3U CN208862154U (en) | 2018-06-19 | 2018-06-19 | Uplink antenna in space base relayed communications enhancing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820943932.3U CN208862154U (en) | 2018-06-19 | 2018-06-19 | Uplink antenna in space base relayed communications enhancing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994157A (en) * | 2019-12-23 | 2020-04-10 | 浙江科技学院 | Vortex-shaped array antenna of double-helix phase-shifting unit |
-
2018
- 2018-06-19 CN CN201820943932.3U patent/CN208862154U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994157A (en) * | 2019-12-23 | 2020-04-10 | 浙江科技学院 | Vortex-shaped array antenna of double-helix phase-shifting unit |
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