CN203367468U - Ultra short wave broadband sub- and center-fed antenna - Google Patents
Ultra short wave broadband sub- and center-fed antenna Download PDFInfo
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- CN203367468U CN203367468U CN2013203513325U CN201320351332U CN203367468U CN 203367468 U CN203367468 U CN 203367468U CN 2013203513325 U CN2013203513325 U CN 2013203513325U CN 201320351332 U CN201320351332 U CN 201320351332U CN 203367468 U CN203367468 U CN 203367468U
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Abstract
The utility model relates to an ultra short wave broadband sub- and center-fed antenna, namely an ultra short wave 1.3m broadband center-fed antenna, including an upper feed antenna body and a lower feed antenna pedestal. The upper feed antenna comprises an upper segment oscillator, a band equalizer and a coaxial impedor; and the lower feed antenna pedestal includes a lower segment oscillator, a feed point and an impedance adapter. The upper segment oscillator, and the feed point and the lower segment oscillator which are built in the lower feed antenna pedestal constitute a sub- and center-fed antenna oscillator. The band equalizer, the coaxial impedor and a frequency band adapter constitute a broadband impedance matching network. The above structure is different from a center-fed antenna, but maintains antenna performance of the center-fed antenna, and is thus called a "sub- and center-fed antenna." According to the utility model, the sub- and center-fed antenna is a low height, wide-band and small-scale ultra short wave antenna; the problems that the antenna height affects moving communication, concealed communication, maintenance and detection and the like are solved; and rapid mobility, concealment and camouflage, communication signal stability and dynamic command performance of communication systems are improved.
Description
Technical field
The utility model belongs to the ultrashort wave antenna technical field, relates to a kind of ultrashort wave broadband inferior center-fed antenna, that is: the inferior center-fed antenna in ultrashort wave 1.3m broadband (30-88MHz).
Background technology
At present, the basic standard configuration 3m of ultrashort wave radio set presents whip antenna in broadband, and equipment reaches 6m with the actual load height of antenna.There is following problem: the one, the target signature of antenna height is obvious, has strengthened hidden camouflage and has organized and directed difficulty; The 2nd, motor-driven in, road culvert along the line, electrical network, forest belt etc. all form obstacle to antenna, the artificial lodging antenna of going slowly of needing to slow down passes through, also easily antenna touches electrical network and burns radio station; The 3rd, when vehicle is advanced, antenna windage and rugged road surface bring antenna significantly to wave, and affect signal of communication stable; The 4th, garage limitation in height antenna launches, and is difficult to periodic maintenance and checks radio station performance and communications and liaison networking.
Above situation, fast reserve, the communication that directly affects communication system is stable, hidden camouflage, moving in commander.Therefore, need the ultrashort wave antenna that finds a kind of new low clearance, broadband, miniaturization badly, reduce the radio antenna height, address the above problem.
The utility model content
For the problems referred to above, the utility model provides a kind of ultrashort wave broadband inferior center-fed antenna, that is: the inferior center-fed antenna in ultrashort wave 1.3m broadband, reduce the radio antenna height, improves wide area mobility, communications and liaison adaptability, dependability and moving middle commander's usefulness of communication system.
For achieving the above object, the utility model is by the following technical solutions:
The inferior center-fed antenna in a kind of ultrashort wave broadband, that is: the inferior center-fed antenna in ultrashort wave 1.3m broadband, the inferior center-fed antenna in this ultrashort wave broadband comprises feedback antenna body and lower feedback antenna pedestal, upper feedback antenna body is connected and composed successively by upper joint oscillator, wave band balancer, coaxial impedance device and antenna connector, and upper joint oscillator is in upper feedback antenna body; Lower feedback antenna pedestal comprises pedestal spring head, pedestal spring body, antenna feed point, frequency band adapter, coaxial transmission line and cable choke, and the pedestal spring body is as lower joint oscillator, and antenna feed point is arranged on the upper end of pedestal spring body; Lower joint oscillator and distributing point are built in lower feedback antenna pedestal, by antenna connector, with the pedestal spring head, are connected, the upper joint oscillator that is coaxial docking, antenna feed point, lower joint oscillator; Upper joint oscillator and lower joint oscillator are the antenna of asymmetric dipole, are called " inferior center-fed antenna ".Upper joint oscillator in upper feedback antenna body, lower joint oscillator and the antenna feed point built-in with lower feedback antenna pedestal, form inferior center-fed antenna oscillator.Wave band balancer, coaxial impedance device and frequency band adapter, form the wideband impedance match network of inferior center-fed antenna, makes the output impedance in the characteristic impedance of antenna and radio station in full frequency band scope wideband impedance match, reaches the designing requirement of electricity function index.
The inferior center-fed antenna in ultrashort wave broadband, refer to the basic principle based on center-fed antenna, but distributing point is in the antenna oscillator bottom, and the built-in lower joint oscillator of the upper joint oscillator of antenna body and antenna pedestal forms antenna oscillator, is the ultrashort wave antenna of asymmetric dipole.
Upper feedback antenna body and lower feedback antenna pedestal are coaxial docking, and the compo pipe of upper feedback antenna body forms upper joint oscillator, and the outer copper mesh of the coaxial cable in lower feedback antenna pedestal and pedestal spring body connect and compose lower joint oscillator, reach a vertical electric dipole oscillator of equivalence on electric property.
The upper joint oscillator of upper feedback antenna body, wave band balancer, coaxial impedance device device are connected successively with antenna connector.The upper radiant body that described upper joint oscillator is inferior center-fed antenna, the integral body that adopts the compo pipe structure to form antenna oscillator loads, and improves the radiation efficiency of antenna and reduces antenna height;
The adaptive mode that the wave band balancer adopts inductance to load, make antenna reach voltage standing wave ratio≤3 at the 60-88MHz band limits; The coaxial impedance device adopts the coaxial cable conductor of two kinds of different qualities impedances to form the two-stage impedance transformation, makes the characteristic impedance of antenna and the output impedance coupling in radio station;
Antenna connector comprises antenna oscillator adapter sleeve, coaxial cable top connection, antenna body hickey, for machinery and the electrical connection of upper feedback antenna body and lower feedback antenna pedestal.In described lower feedback antenna pedestal, pedestal spring head, antenna feed point, coaxial transmission line, cable choke, high frequency cable interface connect successively; Pedestal spring body, frequency band adapter, control cables interface connect successively.The pedestal spring head comprises coaxial cable lower contact, insulation spacer, the upper end docking antenna connector of pedestal spring head, and lower end is connected with antenna feed point by the coaxial conductive body, and the insulation spacer reaches pedestal spring head and pedestal spring body insulation isolation.
Antenna feed point consists of the coaxial conductive body of coaxial transmission line exocuticle opening portion, forms the radiofrequency signal load point; The lower radiant body that lower joint oscillator is inferior center-fed antenna, adopt the outer copper mesh of coaxial cable and pedestal spring body to connect and compose, and the inner wire of its coaxial cable is connected with antenna feed point.The frequency band adapter is connected between the outer copper mesh of coaxial cable and lower feedback antenna pedestal earth point, makes antenna reach voltage standing wave ratio≤3 at the 30-60MHz band limits;
The coaxial transmission line upper end is connected with antenna feed point, lower end stube cable choke; The coiled coaxial cable of cable choke forms reactor on the low-loss magnet ring, reaches " insulation against ground " of antenna by the cable choke; The radio circuit interface arrangement that the high frequency cable interface is antenna and radio station, inside is connected with the cable choke, and outside is connected with the high frequency cable in radio station;
The wideband impedance match network tuning circuit interface arrangement that the control cables interface is antenna and radio station, inside is connected with the frequency band adapter, the outside radio station low pass filter that connects.
The utility model, owing to adopting above technical scheme, has the following advantages and effect:
The utility model has been realized the low clearance broadband miniaturization of ultrashort wave radio set antenna, has effectively improved motor-driven, the hidden camouflage of wide area, communications and liaison signal stabilization and moving middle commander's usefulness of communication system.The relative center-fed antenna of inferior center-fed antenna adopted, kept bandwidth, antenna body little characteristics affected by environment, and make antenna height reduce more than 1/2; During by culvert, electrical network, forest belt etc. not at the deceleration artificial lodging antenna of going slowly, the high spatial resolution of antenna is low profile and approaches the carrier syntype, motion state antenna rocking tendency significantly reduces, and the mobility of communication system, disguise and communications and liaison signal stabilization obviously strengthen.
The utility model does not change system, circuit structure, using method, operation sequence and the antenna installation site in former radio station, be applicable to the various ultrashort wave radio set of same band limits (comprising: fixed radio station, frequency hopping radio set, data radio station, Tactical Internet radio station frequently), adapt to various crawler belt/wheeled fighting equipment, Support Equipment and maneuvering platform.Both can be used as the standard configuration antenna in radio station, also can be used as the emergency antenna configuration.Simultaneously, according to the utility model principle, suitably adjust antenna oscillator load mode and impedance matching network parameter, can adaptive each frequency range ultrashort wave radio set.The utility model has solved the problem that equipment garage limitation in height antenna launches, can realize that equipment does not need to start outbound, can carry out radio station performance checking and communications and liaison networking in original place, effectively improve maintaining convenience, dependability and the defense economy benefit of communication system.
The accompanying drawing explanation
Fig. 1 is basic structure schematic diagram of the present utility model.
Fig. 2 is the structural representation of upper feedback antenna body.
Fig. 3 is the structural representation of lower feedback antenna pedestal.
In figure: present antenna body on 1; 2 times feedback antenna pedestals; Save oscillator on 3; 4 wave band balancers; 5 coaxial impedance devices; 6 antenna connectors; 7 antenna oscillator adapter sleeves; 8 coaxial cable top connections; 9 antenna body hickeys; 10 pedestal spring heads; 11 coaxial cable lower contacts; 12 insulation spacers; 13 antenna feed points; 14 pedestal spring bodies; 15 frequency band adapters; 16 control cables interfaces; 17 coaxial transmission lines; 18 cable chokes; 19 high frequency cable interfaces.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
Fig. 1 is basic structure schematic diagram of the present utility model.As shown in the figure, the inferior center-fed antenna in ultrashort wave broadband, that is: the inferior center-fed antenna in ultrashort wave 1.3m broadband, comprise feedback antenna body 1 and lower feedback antenna pedestal 2.Upper feedback antenna body and lower feedback antenna pedestal are coaxial docking.
The structural representation that Fig. 2 is upper feedback antenna body.As shown in the figure, upper joint oscillator 3 is connected successively with wave band balancer 4, coaxial impedance device 5, antenna connector 6; Wherein the coaxial cable top connection 8 in antenna connector 6 is joined with coaxial impedance device 5, and antenna oscillator adapter sleeve 7 is connected with antenna body hickey 9 with upper joint oscillator 3.
The structural representation that Fig. 3 is lower feedback antenna pedestal.As shown in the figure, pedestal spring head 10 and antenna feed point 13 pedestal spring bodies 14, coaxial transmission line 17; Cable choke 18; High frequency cable interface 19 connects successively; Coaxial cable lower contact 11 is connected with antenna feed point 13, and pedestal spring head 10 is by insulation spacer 12 and 14 insulation of pedestal spring body; Frequency band adapter 15 two ends are connected with control cables interface 16 with the pedestal spring body.
In above-described embodiment, upper joint oscillator 3 length are 1300mm, adopt the compo pipe structure of L1300mm, Φ 30mm, inside connect wave band balancer 4 and coaxial impedance device 5, and by the coaxial antenna feed point 13 that connects of antenna connector 6.
In above-described embodiment, lower joint oscillator 14 is built in lower feedback antenna pedestal, and length 1700cm adopts the outer copper mesh of 50 Ω coaxial cables to connect pedestal spring body 14 and forms; The conductor upper end of coaxial cable connects distributing point 13, and lower end is by coaxial transmission line 17 stube cable chokes 18.
In above-described embodiment, antenna feed point 13, adopt the coaxial conductor of 50 Ω coaxial cable exocuticle opening portions to form, and its upper end connects joint oscillator 3 by 10 pairs of pedestal spring heads.
In above-described embodiment, the upper joint oscillator 3 in upper feedback antenna body 1, lower joint oscillator 14 and the antenna feed point 13 built-in with lower feedback antenna pedestal 2, form inferior center-fed antenna oscillator.
In above-described embodiment, coaxial transmission line 17 and cable choke 18, adopt 50 Ω coaxial cables to connect, and cable choke 18 is wound on the low-loss magnet ring and forms radio-frequency rector, by the cable choke, in the full frequency band scope, reaches " insulation against ground " of antenna.
In above-described embodiment, antenna connector 6 consists of antenna oscillator adapter sleeve 7, coaxial cable top connection 8, antenna body hickey 9; Pedestal spring head 10 consists of coaxial cable lower contact 11, insulation spacer 12, and the spacer 12 that wherein insulate reaches pedestal spring head 10 isolates with the mutually insulated of pedestal spring body 14; Antenna connector 6 coaxially is connected feedback antenna body 1 and lower feedback antenna pedestal 2 with pedestal spring head 10.
In above-described embodiment, wave band balancer 4 adopts Φ 20mm(20-110) MHz high frequency magnet ring, in magnet ring, the coiling inductance coil forms, and is used for adjusting between antenna oscillator and radio station and reaching voltage standing wave ratio≤3 at the 60-88MHz band limits.
In above-described embodiment, coaxial impedance device 5, adopt the coaxial cable of two specific character impedances to connect and compose, and the coaxial conductive body formation two-stage impedance transformation by the different qualities impedance, make antenna impedance equivalence 50 Ω, with the radio-frequency head impedance matching in radio station.
In above-described embodiment, frequency band adapter 15 is connected between lower joint oscillator (pedestal spring body) 14 and lower feedback antenna pedestal 2 earth points, and is connected with the low pass filter in radio station through control cables interface 16; Be mainly used to adjust between antenna oscillator and radio station and reach voltage standing wave ratio≤3 at the 30-60MHz band limits.
In above-described embodiment, the form that realizes of the inferior center-fed antenna in ultrashort wave broadband is divided into four parts such as antenna oscillator feed, antenna signal feed, antenna body loading, Antenna Impedance Matching, and concrete form is as follows:
(1) antenna oscillator feed.The feed carrier of inferior center-fed antenna oscillator lays respectively at feedback antenna body and lower feedback antenna pedestal.Upper joint oscillator 3 in upper feedback antenna body 1, lower joint oscillator (pedestal spring body) 14 and antenna feed point 13 with built-in in lower feedback antenna pedestal, form a vertical electric dipole oscillator.During the collection of letters, antenna oscillator is converted to high-frequency current by electromagnetic wave; While posting a letter, antenna oscillator is electromagnetic wave by high frequency current transitions.
(2) antenna signal feed.Inferior center-fed antenna distributing point 13, be built in pedestal spring head 10 lower ends of lower feedback antenna pedestal 2, makes the distributing point optimal design of aerial signal in the antenna oscillator bottom; At the distributing point place, the high-frequency current of aerial signal is divided into two-way, the one road upper radiant body that upper joint oscillator 3 forms of flowing through, another road is by the outer copper mesh of the coaxial cable lower joint oscillator 14(pedestal spring body of flowing through) the lower radiant body that forms, make inferior center-fed antenna oscillator be asymmetric feed form.
(3) antenna body loads.The antenna body height 1300mm of inferior center-fed antenna, the 1/8 wavelength left and right about station telecommunication frequency range low-limit frequency, because the relative center-fed antenna of the height of inferior center-fed antenna reduces more than 1/2, by the integral body that adopts compo pipe to form antenna oscillator, load, improving antenna current distributes, the dielectric area that reaches antenna oscillator increases, and signal of communication strengthens and band spread, strengthens the radiation efficiency of antenna oscillator.
(4) Antenna Impedance Matching.Inferior center-fed antenna adopts wave band balancer 4, coaxial impedance device 5, frequency band adapter 15, forms the Antenna Impedance Matching network.Coaxial impedance device 5, by the coaxial cable of two specific character impedances, makes characteristic impedance of antenna be equivalent to 50 Ω, with the antenna loop impedance matching; Wave band balancer 4 is mainly in the impedance matching of 60-88MHz frequency range, and frequency band adapter 15 is mainly in the impedance matching of 30-60MHz frequency range.Above-mentioned impedance matching networking, make antenna and radio station in 30-88MHz full frequency band wideband impedance match, reaches the designing requirement of voltage standing wave ratio.
Comprehensive above-described embodiment, although the feed character of the utility model based on center-fed antenna, but on the project organizations such as the setting of antenna body height and frequency bandwidth, antenna oscillator feed structure, antenna feed point, antenna loop impedance matching, with center-fed antenna, be following different: the antenna body height of inferior center-fed antenna is 1.3m, and its height is about 1/8 wavelength left and right of communications band low-limit frequency; The upper joint oscillator design of antenna is in upper feedback antenna body, and lower joint oscillator is built in lower feedback antenna pedestal, and antenna feed point is arranged on the antenna oscillator bottom, and the upper and lower radiant body of antenna is asymmetrical vibrator.Though above-mentioned theory structure is different from center-fed antenna, also kept the Feedback current of center-fed antenna.Therefore, this new Principle of Antenna design is called " inferior center-fed antenna ".
During the utility model work, its operation principle is as follows: the work of " inferior center-fed antenna " is divided into collects mail and posts a letter two kinds of feed conditions.Under above-mentioned feed condition, antenna oscillator and impedance matching network are in full frequency band wide-band tuning adaptation.During information receiving state, the electromagnetic wave signal of antenna reception is from the antenna feed point feed-in; By by the feedback antenna body 1 upper joint oscillator 3 and antenna connector 6, produce the magnetoelectricity vibration in the antenna oscillator formed with the pedestal spring head 10 of lower feedback antenna pedestal 2, antenna feed point 13 and lower joint oscillator 14, convert the electromagnetic wave energy of aerial signal to high-frequency current; High-frequency current is the radio-frequency head to radio station through coaxial transmission line 17, cable choke 18, high frequency cable interface 19.While posting a letter state, the radio-frequency current in radio station through high frequency cable interface, cable choke, coaxial transmission line to antenna oscillator; Radio-frequency current, through lower joint oscillator, antenna feed point, upper joint oscillator, produces electromagnetic viscosimeter in antenna oscillator, and the high frequency current transitions of radio station emission is become to the radiofrequency signal electromagnetic wave, and to the space omnidirectional radiation.In the above-mentioned collection of letters and the state of posting a letter, the wide-band tuning matching network formed by coaxial impedance 5 and wave band balancer 4, frequency band adapter 15, make the characteristic impedance of antenna and the output impedance full frequency band wideband impedance match in radio station, reach the designing requirement of voltage standing wave ratio.
The utility model only describes with above-described embodiment, the inferior center-fed antenna in ultrashort wave broadband, that is: and formation and the structural parameters of each group (device) part of the inferior center-fed antenna in ultrashort wave 1.3m broadband all can change to some extent; Length and width, conducting medium, distributing point setting and the physics rigid structure of antenna oscillator (or claiming antenna body, radiant body, antenna whip), all can change to some extent; Frequency range, antenna loading mode and impedance matching networking all can change to some extent; On the basis of technical solutions of the utility model, all improvement or equivalent variations of indivedual groups of (device) parts and said structure form being carried out according to the utility model principle, all be not precluded within outside protection range of the present utility model.
Claims (10)
1. the inferior center-fed antenna in a ultrashort wave broadband, it is characterized in that: the inferior center-fed antenna in this ultrashort wave broadband is by upper feedback antenna body and lower feedback antenna pedestal, upper feedback antenna body comprises that joint oscillator (3), wave band balancer (4), coaxial impedance device (5) and antenna connector (6) connect and compose successively, and upper joint oscillator is in upper feedback antenna body; Lower feedback antenna pedestal comprises pedestal spring head (10), pedestal spring body (14), antenna feed point (13), frequency band adapter (15), coaxial transmission line (17) and cable choke (18), pedestal spring body (14) is as lower joint oscillator, and antenna feed point (13) is arranged on the upper end of pedestal spring body (14); Lower joint oscillator and distributing point are built in lower feedback antenna pedestal, by antenna connector (6), with the pedestal spring head, are connected, the upper joint oscillator that is coaxial docking, antenna feed point, lower joint oscillator; The built-in lower joint oscillator of the upper joint oscillator of antenna body and antenna pedestal forms antenna oscillator, is the antenna of asymmetric dipole, is called " inferior center-fed antenna ".
2. the inferior center-fed antenna in ultrashort wave according to claim 1 broadband is characterized in that: lower joint oscillator adopts coaxial cable transmission line to connect the pedestal spring body to form, and distributing point adopts coaxial cable exocuticle hatch method to form.
3. the inferior center-fed antenna in ultrashort wave according to claim 1 and 2 broadband, is characterized in that: above save oscillator and adopt compo pipe.
4. the inferior center-fed antenna in ultrashort wave according to claim 1 and 2 broadband, it is characterized in that: antenna connector comprises antenna oscillator adapter sleeve (7), coaxial cable top connection (8) and antenna body hickey (9); The pedestal spring head comprises coaxial cable lower contact and insulation spacer, and the insulation spacer reaches pedestal spring head and pedestal spring body insulation isolation.
5. the inferior center-fed antenna in ultrashort wave according to claim 3 broadband, it is characterized in that: antenna connector comprises antenna oscillator adapter sleeve (7), coaxial cable top connection (8) and antenna body hickey (9); The pedestal spring head comprises coaxial cable lower contact and insulation spacer, and the insulation spacer reaches pedestal spring head and pedestal spring body insulation isolation.
6. according to claim 1, the inferior center-fed antenna in 2 or 5 described ultrashort wave broadbands, it is characterized in that: wave band balancer (4) adopts inductance type wave band balancer (4).
7. the inferior center-fed antenna in ultrashort wave according to claim 3 broadband, is characterized in that: wave band balancer (4) employing inductance type wave band balancer (4).
8. the inferior center-fed antenna in ultrashort wave according to claim 4 broadband, is characterized in that: wave band balancer (4) employing inductance type wave band balancer (4).
9. the inferior center-fed antenna in ultrashort wave according to claim 6 broadband, is characterized in that: form the main impedance matching in 60-88MHz frequency range tuned antenna and radio station in inductance type wave band balancer (4) employing high frequency magnet ring around inductance coil; The frequency band adapter mainly, in 30-60MHz frequency range tuned antenna and radio station impedance matching, reaches voltage standing wave ratio≤3.
10. according to the inferior center-fed antenna in the described ultrashort wave of claim 7 or 8 broadband, it is characterized in that: inductance type wave band balancer (4) adopts in the high frequency magnet ring and forms around inductance coil, the main impedance matching in 60-88MHz frequency range tuned antenna and radio station; The frequency band adapter mainly, in 30-60MHz frequency range tuned antenna and radio station impedance matching, reaches voltage standing wave ratio≤3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203513325U CN203367468U (en) | 2013-06-18 | 2013-06-18 | Ultra short wave broadband sub- and center-fed antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203513325U CN203367468U (en) | 2013-06-18 | 2013-06-18 | Ultra short wave broadband sub- and center-fed antenna |
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| Publication Number | Publication Date |
|---|---|
| CN203367468U true CN203367468U (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013203513325U Expired - Fee Related CN203367468U (en) | 2013-06-18 | 2013-06-18 | Ultra short wave broadband sub- and center-fed antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414008A (en) * | 2013-06-18 | 2013-11-27 | 中国人民解放军65189部队 | Ultrashort wave broadband sub-center-fed antenna |
-
2013
- 2013-06-18 CN CN2013203513325U patent/CN203367468U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414008A (en) * | 2013-06-18 | 2013-11-27 | 中国人民解放军65189部队 | Ultrashort wave broadband sub-center-fed antenna |
| CN103414008B (en) * | 2013-06-18 | 2016-04-20 | 中国人民解放军65189部队 | The sub-center-fed antenna in ultrashort wave broadband |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20150618 |
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| EXPY | Termination of patent right or utility model |