CN2061736U - Ring focusing communication antenna - Google Patents

Abstract

The utility model discloses a ring focusing communication antenna, which is composed of a major face, an auxiliary surface, a feed system, an auxiliary surface strut, an emanate strut, a stand and a pitch orientation regulating screw. The utility model has the superior electric properties of low minor lobe, high gain, low voltage standing wave ratio, high polarization discrimination rate, etc, and the characteristics of compact antenna structure, simple adjusting mechanism, low cost, convenience for production, etc. The utility model can work at not only linear polarization but also circle polarization, and can implement frequency spectrum multiplexing. The utility model can be used for satellite communication, microwave relay, scatter communication, etc.

Description

Ring focusing communication antenna

The utility model relates to a kind of Ring focusing communication antenna that is used for satellite communication, also is applicable to fields such as microwave relay, scatter communication.

Flourish along with the satellite communication cause, synchronous satellite quantity is increasing, the interval of adjacent satellite is also more and more little, just more and more harsh to the requirement of satellite earth station antenna off-axis secondary lobe like this, at present, normally used satellite earth station communication antenna is the Cassegrain Bimirror antenna, this antenna remains in fatal weakness using high performance feed, be that the feed shield surpasses secondary face shield, the existence of this contradiction will cause the antenna sidelobe level to raise, matching performance worsens, and the circular polarization performance depreciation that efficient reduces does not satisfy the requirement of satellite communication.Another kind of satellite earth station communication antenna commonly used is a forward-feed type parabolic antenna, though this communication antenna can satisfy the requirement of satellite earth station to antenna sidelobe, but there is following shortcoming in it: efficient is lower, during compact conformation, the feed design is difficult, plane of polarization is adjusted difficulty and adjusting mechanism complexity, and is difficult to realize spectrum reuse work.Though another kind of small-bore biasing or double offset antenna function admirable can satisfy the secondary lobe requirement of satellite earth station to antenna fully, antenna efficiency is also high, and difficult design involves great expense, and is difficult to apply.

The purpose of this utility model is to avoid above-mentioned weak point of the prior art and Ring focusing communication antenna that a kind of function admirable is provided, it can satisfy the requirement of satellite earth station to the low secondary lobe of antenna, high efficiency, low-voltage standing-wave ratio, also have simple and compact for structure simultaneously, the feed design easily, the plane of polarization adjustment is easy, with low cost, can realize characteristics such as spectrum reuse again, be a kind of high-performance satellite communication antena easy to utilize.

The purpose of this utility model is achieved in that by interarea 1, secondary face 2, four secondary face poles 3, feed system 4, mounting 5, several radiation poles 6, centerbody 7, pitch regulation screw rod 8 and orientation adjusting screw(rod)s 9 forms a new antenna assembly.Wherein interarea 1, secondary face 2 structures are burnt shape of ring or the burnt shape of excipient ring, and interarea 1 is divided into the piece formula, and each piece is screwed on the upper surface of centerbody 7, with securing member the reinforcement at each piece back side is connected to each other together again; Several radiation pole 6 one ends are installed on interarea 1 back side with securing member, and the other end is installed on the face of cylinder, centerbody 7 cylinder lower end, and evenly are installed in interarea 1 back side to support interarea 1; One end of four secondary face poles 3 is installed in the front of interarea 1 respectively with the securing member symmetry, and becomes miter angle with interarea 1 axis of symmetry, and the other end is installed in the top of secondary face 2 with securing member, and the bottom of secondary face 2 is the reflecting surface and the interarea 1 positive relative installation of secondary face; Feed system 4 is installed on the center of interarea 1; 5 fens upper and lower two parts of mounting, the bottom is connected with the earth with fot screw, and the orientation rotation can be done around vertical axis with respect to the bottom in top, and centerbody 7 flexibly connects with pin with mounting 5 tops; Pitch regulation screw rod 8 one ends are movably connected on the centerbody 7 with pin, in the adjusting nut that the other end is installed on the top of mounting 5 with screw rod matches, are the adjustable fulcrum of pitch regulation screw rod 8; A fixed pivot of orientation adjusting screw(rod) 9 flexibly connects with pin, and on the face of cylinder on mounting 5 tops, another adjustable fulcrum is installed in the lower part of mounting 5, promptly in ring flange and the adjusting nut that screw rod matches.The interarea 1 actinal surface diameter dimension of Ring focusing communication antenna is 2.4 meters to 5 meters simultaneously, and is made by the aluminium alloy plate material.

The utility model compared with prior art has following advantage:

1, secondary lobe is low, gain is high, voltage standing wave ratio is low, and the circular polarization performance is good, realizes spectrum reuse work easily, and electric property all is better than existing all types of antennas, can satisfy the requirement of narrow interval Satellite To Satellite earth station communication antenna fully.

2, antenna structure is simply compact, and low to the feed system requirement, the plane of polarization adjustment is easy, and the antenna adjusting mechanism hits list, and is therefore with low cost, is convenient to make and produce in batches.

3, when guaranteeing the antenna premium properties, can be made into the antenna of different actinal surface diameters, satisfy user's different requirements, easy to utilize.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Fig. 1 is a structural representation of the present utility model.

With reference to Fig. 1, it is by interarea 1, secondary face 2, four secondary face poles 3, feed system 4, mounting 5, several radiation poles 6, centerbody 7, pitch regulation screw rod 8 and orientation adjusting screw(rod) 9 are formed, the utility model interarea 1, secondary face 2 structures are burnt type of ring or the burnt type of excipient ring, the burnt type communication antenna of a kind of excipient ring of embodiment, its excipient principle is under the situation of given feed directional diagram, obtain the contour curve coordinate points of the burnt type antenna of excipient ring by the actinal surface field distribution of following formula (1), also can adopt other multiple actinal surface field distribution F(R) carry out excipient and calculate and obtain interarea 1.The contour curve coordinate points of secondary face 2, determined the profile of interarea 1, secondary face 2 by these coordinate points, earlier produce the interarea model of interarea 1 and the secondary face pattern of secondary face 2 man-hour adding, process interarea 1 and secondary face 2 respectively according to interarea model and secondary face pattern then according to coordinate points.Interarea 1 is a fraction block structure, every interarea panel drawing and forming, the utility model interarea 1 is assembled by 8 main panels respectively, each piece is screwed on the upper surface of centerbody 7, and the reinforcement at each piece back side is connected to each other together with securing member, panel is connected on eight radiation poles 6 that are contained on the centerbody 7 with securing member, interarea 1 is made by the aluminium alloy plate material again, and embodiment adopts commercially available LY12-M type aluminium alloy plate material.The actinal surface diameter dimension of interarea 1 can be from 2.4 meters to 5 meters, and embodiment is a burnt type communication antenna of excipient ring that the actinal surface diameter dimension is about 3 meters.Center of antenna body 7 is that to be welded into diameter with steel plate be 500 millimeters, it highly is a cylindrical shape of 400 millimeters, several radiation pole 6 one ends are installed on interarea 1 back side reinforcement with securing member, the other end is installed on the face of cylinder, centerbody 7 cylinder lower end, and evenly be installed in interarea 1 back side to support interarea 1, radiation pole among the embodiment is adopted 8, and each radiation pole is welded with commercially available seamless steel pipe material.One end of four secondary face poles 3 is installed in the front of interarea 1 respectively with the securing member symmetry, and become miter angle with interarea 1 axis of symmetry, the other end is installed in the top of secondary face 2 with securing member, the bottom of secondary face 2, be the reflecting surface and interarea 1 positive relative installation of secondary face, be used for reflection electromagnetic wave each other, secondary face 2 is to use the casting aluminium material casting, processes according to secondary face pattern then.

$F\left(R\right)=1-0.82e^{-4(1-\frac{R}{\mathrm{Rm}})}-0.82e^{-8\frac{R}{\mathrm{Rm}}}.......\left(1\right)$

In the formula: F(R) be the actinal surface field distribution of antenna interarea

R is an antenna interarea actinal surface radius variable

Rm is an antenna interarea actinal surface radius

Feed system 4 usefulness securing members are installed on the center of interarea 1, and the feed system 4 among the embodiment adopts common feed system commonly used.5 fens upper and lower two parts of mounting, the bottom is connected with the earth with fot screw, plays the fixation of antenna; The orientation rotation can be done around vertical axis with respect to the bottom in top.Centerbody 7 flexibly connects with pin with mounting 5 tops, and pitch regulation screw rod 8 one ends are movably connected on the centerbody 7 with pin, and the other end is installed in the adjusting nut on mounting 5 tops, with the adjustable fulcrum as pitch regulation screw rod 8.When adjusting nut, make pitch regulation screw rod 8 make stretching motion, thereby antenna is done upper and lower swing, reach the purpose of regulating antenna elevation angle.A fixed pivot of orientation adjusting screw(rod) 9 flexibly connects with pin and is installed on the face of cylinder, top of mounting 5, in the lower part ring flange that another adjustable fulcrum is installed in mounting 5 and the nut that screw rod matches, when adjusting nut, make orientation adjusting screw(rod) 9 do telescopic moving, thereby antenna is done rotation and is moved, reach the purpose of regulating antenna azimuth, pitch regulation screw rod 8 that provides among the embodiment and orientation adjusting screw(rod) 9 all adopt commercially available cylindrical steel materials processing to form.Adopt tube material machine-shaping on the mounting 5.

Electrical installation principle of the present utility model is as follows: when the same day, line was operated in accepting state, interarea 1 receives the electromagnetic wave that send in the space, reflex to secondary face 2 through antenna interarea 1, reflex to feed system 4 by secondary face 2 again, be transferred to the field through feed system 4 and put and send into receiver after device amplifies and finish the reception task.When the same day, line was operated in emission state, the electromagnetic wave that is come by the transmitter transmission inputs to feed system 4, and feed system 4 at first projects electromagnetic wave on the secondary face 2 of antenna, reflexes to interarea 1 by secondary face 2, in interarea 1 reflexes to the space in antenna the place ahead, go again, finish electromagnetic launch mission.The utility model is when given different feed directional diagram, the burnt type interarea 1 of excipient ring that its interarea actinal surface field distribution calculate to be obtained by formula (1) is also different with the contour curve coordinate points of secondary face 2, the burnt type antenna of the excipient ring of last moulding is also just different, the reflection of electromagnetic wave angle of interarea 1 and secondary face 2 is also different, but the electricity function index of this antenna should be basic identical.

Claims (3)

1, by interarea 1, secondary face 2, four Ring focusing communication antenna that secondary face pole 3, feed system 4, mounting 5, several radiation poles 6, centerbody 7, pitch regulation screw rod 8 and orientation adjusting screw(rod) 9 are formed, it is characterized in that interarea 1, secondary face 2 structures are burnt type of ring or the burnt type of excipient ring, interarea 1 is a sectional type, each piece is screwed on the upper surface of centerbody 7, with securing member the reinforcement at each piece back side is connected to each other together again; Several radiation pole 6 one ends are installed on interarea 1 back side with securing member, and the other end is installed on the face of cylinder, centerbody 7 cylinder lower end, and evenly are installed in interarea 1 back side to support interarea 1; One end of four secondary face poles 3 is installed in the front of interarea 1 respectively with the securing member symmetry, and becomes miter angle with interarea 1 axis of symmetry, and the other end is installed in the top of secondary face 2 with securing member, and the bottom of secondary face 2 is the reflecting surface and the interarea 1 positive relative installation of secondary face; Feed system 4 is installed on the center of interarea 1; Mounting 5 is divided into upper and lower two parts, and the bottom is connected with the earth with fot screw, and the orientation rotation can be done around vertical axis with respect to the bottom in top, and centerbody 7 flexibly connects with pin with mounting 5 tops; Pitch regulation screw rod 8 one ends flexibly connect with pin and are installed on the centerbody 7, in the adjusting nut that the other end is installed on the top of mounting 5 with screw rod matches, are the adjustable fulcrum of pitch regulation screw rod 8; A fixed pivot of orientation adjusting screw(rod) 9 flexibly connects with pin and is installed on the face of cylinder on mounting 5 tops, in the lower part ring flange that another adjustable fulcrum is installed in mounting 5 and the adjusting nut that screw rod matches.

2, Ring focusing communication antenna according to claim 1, the actinal surface diameter dimension that it is characterized in that interarea 1 are 2.4 meters to 5 meters.

3, Ring focusing communication antenna according to claim 1 and 2 is characterized in that interarea 1 made by the aluminium alloy plate material.