KR100682984B1 - Hybrid Antenna System - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a multiband hybrid antenna system.

2. The technical problem to be solved by the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide a hybrid antenna system having both the advantages of a mechanical antenna and a phased array antenna by using an algorithm of mechanically coarse satellite tracking and electronic high speed fine tracking algorithm. .

3. Summary of Solution to Invention

The present invention provides a multi-band hybrid antenna system for mechanically coarse tracking a target satellite and high-speed fine tracking electronically to provide a communication service and a satellite broadcast reception service. And a rotating body unit for tracking a satellite direction by using an electron beam tracking function and performing transmission and reception of multi-band frequencies through the satellite and free space. A fixed unit configured to transmit and receive communication and broadcast signals with an external terminal system and receive AC power from the outside; And stabilization driving means for connecting the rotating body part to a stationary body part, and for driving and controlling it mechanically or electronically.

4. Important uses of the invention

The present invention is used in a hybrid antenna system and the like.

Antenna, Triple Band, Mobile Vehicle, Phase Tracking Algorithm, Hybrid

Description

Multiband Hybrid Antenna System

1 is a configuration diagram of an embodiment of a hybrid antenna system according to the present invention;

FIG. 2 is a detailed configuration diagram of one embodiment of the rotating body system 1000 of FIG. 1.

3 is a detailed configuration diagram of an embodiment of the fixture system 2000 of FIG.

4 is a side cross-sectional view of an embodiment of the radiator 1110 of FIG.

5 is a plan view and a side view of a first embodiment of the radiator 1100 of FIG.

6 is a plan view and a side view of a second embodiment of the radiator 1100 of FIG.

FIG. 7 is an exemplary structural diagram of the active feed array 1113 of FIG. 4, showing an excitation arrangement of the feed array elements.

8 is a structural diagram of an embodiment of a dual band conical helix excitation device according to the present invention;

9 is a view showing an embodiment structure of twenty feeding arrangements using a conical helix excitation element according to the present invention;

10 is a detailed configuration diagram of an embodiment of the Ka band transmission active unit 1210 of FIG.

11 is a detailed configuration diagram of an embodiment of the K-band receiving active unit 1220 of FIG.

12 is a detailed configuration diagram of an embodiment of the stabilizer 3000 of FIG.

FIG. 13 is a detailed block diagram of an embodiment of the controller 1410 of FIG. 2;

14 is a detailed configuration diagram of one embodiment of the power supply unit 1420 of FIG.

15 is a flowchart illustrating a satellite tracking control process of the hybrid antenna system according to the present invention.

* Description of main parts of drawing *

1000: Rotating System 2000: Fixed System

3000: Stabilizer 4000: Mobile terminal system

1100: radiator 1200: triple band transmission and reception active unit

1300: first triplexer 1400: power / control unit

2100: second triplexer 2200: monitoring control unit

1110: Ka / K band radiator 1120: Ku band radiator

1111: main reflection plate 1112: sub-reflection plate

1113: active feed array

The present invention relates to a hybrid antenna system, and more particularly, a mobile-mounted multiplex for mechanically coarse tracking of a target satellite and high-speed fine tracking electronically to provide a communication service and a satellite broadcasting reception service. A band hybrid antenna system.

In order to develop a low cost antenna that satisfies the high gain antenna characteristics in the high frequency band and the multi band under the mobile satellite communication environment, an efficient antenna structure must be selected according to the requirements.

Conventional mechanical antenna system has been applied to low gain and single or dual band mobile antenna system due to the relatively low implementation cost, but the gain is increased so that the antenna beam width is less than 0.5 °, making satellite tracking almost impossible. have. In addition, because the phased array antenna system provides the scanning characteristics of the ultra-fast electron beam, but the system implementation price is too high, it has been mainly applied to single or dual band military antenna or radar system. The system implementation cost of a phased array antenna system is limited by the gain of the antenna, the scan range of the electron beam, and the side lobe (or grating lobe) characteristics.

Hereinafter, an outline and problems of performance, cost, or use environment of a conventional antenna applicable to a hybrid antenna system will be described.

In high gain antenna applications that operate in multiple bands and have a narrow electron beam scan range, conventional phased array antennas have very fast electron beam scan characteristics while being very expensive and constrained by ease of implementation. In addition, the high gain mechanical antenna has a low implementation cost, but performance deterioration due to a target tracking error is a problem.

Conventional single horn feed reflector antennas are commonly used in antenna systems for long range satellite communications providing fixed antenna beams. In addition, the reflector antenna in the mobile environment is used for a small antenna having a relatively large antenna beam width because of the pure mechanical tracking method, and the tracking speed is relatively slow compared to the tracking method by the electron beam tracking, so it is a low speed type like a ship. It is widely used in a mobile body, and a mobile body mounted high gain antenna has a problem that is almost impossible to use due to tracking loss due to a narrow beam width.

In addition, the conventional phased array antenna system is mainly used in military (radar) system for high-speed, precise tracking because the target is tracked at high speed using the electron beam. In particular, in a specification requiring multi-band, high frequency, high gain, and wide beam scan sector, the phased array antenna has a lot of limitations in implementation and integration as well as cost.

Accordingly, in order to provide a satellite multimedia communication service and a satellite broadcast reception service, and to implement a mobile mounted offset hybrid antenna system operating in a multi-band, a mechanically coarse tracking satellite and electronic high-speed precision ( There is a need to implement a dual reflector offset hybrid antenna structure having the advantages of a mechanical tracking and a phased array antenna.

The present invention has been proposed to solve the above problems, by using an algorithm that mechanically tracks satellites coarse and high-speed fine tracking electronically, a hybrid having both advantages of a mechanical antenna and a phased array antenna The object is to provide an antenna system.

In addition, the present invention is a structure that combines the high gain characteristics of the reflector antenna and the high-speed electron beam scanning characteristics of the active phased array antenna and includes a reflector antenna and a feed active phased array antenna, thereby having the advantages of both a mechanical antenna and a phased array antenna. The object of the present invention is to provide a mobile-mounted hybrid antenna system having a double reflector structure.

In addition, an object of the present invention is to provide a multi-band hybrid antenna system that can be mounted on a mobile unit to provide both satellite multimedia communication service and satellite broadcast reception service.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

The present invention for achieving the above object is a multi-band hybrid antenna system for providing a communication service and satellite broadcast reception service by mechanically coarse tracking the target satellite and high-speed fine tracking electronically, the rotation, A rotating body unit for tracking the satellite direction by using a mechanical motion and an electron beam tracking function including movement, and performing transmission and reception of multi-band frequencies through the satellite and free space; A fixed unit configured to transmit and receive communication and broadcast signals with an external terminal system and receive AC power from the outside; And stabilization driving means for connecting the rotatable part to the stationary body, for driving and controlling mechanically or electronically, wherein the rotatable part receives a signal of a reception band for communication from a free space by using a main reflector and a sub reflector. Radiating means for radiating a signal of a communication transmission band into a free space and receiving a signal of a broadcast reception band; Downlink frequency conversion of the signal provided from the radiating means, up-frequency conversion of the received signal provided to the radiating means, and signal processing functions such as gain control of signal power, low noise amplification, phase control, beam shaping and control Transmitting and receiving unit for performing; Comprising a multi-channel signal input / output multi-band signal on the basis of a common terminal, receiving the down-converted signal from the transmitting and receiving active unit channel amplification or signal suppression process to provide to the stabilization drive means, the stabilization drive A first triplex for channel amplifying or signal suppressing the signal received from the means and providing the signal to the transmitting and receiving active part; And providing power and control data for driving and controlling the stabilization driving means to the stabilization driving means by receiving an AC supply power, detecting a voltage from the transmission / reception active unit, and providing power and phase data to the transmission / reception active unit. It characterized in that it comprises a power / control unit for.

In addition, the present invention provides a multi-band hybrid antenna for providing a communication service and a satellite broadcast reception service, comprising: a communication band transmitting / receiving antenna having an offset double reflector structure including a main reflector and a sub reflector to transmit and receive communication band signals; And a broadcast band receiving antenna positioned horizontally on the sub-reflection plate to receive a broadcast band signal.

In addition, the present invention is a satellite tracking method of a hybrid reflector system of a dual reflector structure using a mechanical drive and electron beam tracking to mechanically coarse tracking the target satellite and high-speed fine tracking electronically,

Acquiring target satellite position information by the hybrid antenna system for acquiring azimuth and elevation angle information of a target satellite for satellite communication or satellite broadcasting;

A posture control step of controlling the posture so that the antenna beam is directed to the enhancement target satellite despite the movement of the device equipped with the hybrid antenna system using the mechanical drive device;

A satellite signal capturing step of capturing satellite signals while performing two-dimensional mechanical scanning of the sub-reflection plate of the hybrid antenna system in up, down, left and right directions; And

In order to track the satellite signal continuously captured in response to the movement of the device equipped with the hybrid antenna system, the captured satellite signal is sensed relative to the change in the relative position of the target satellite by using the active phase arrangement and the sub-reflection plate in the changed relative position direction. A satellite tracking step that continuously tracks the target position by interlocking the mechanical beam steering and the electronic beam steering by active phase alignment.

Characterized in that it comprises a.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, with reference to the accompanying drawings, prior to describing the preferred embodiment according to the present invention in detail, the three-band (Ka / K / Ku band) mobile mounting type as the most preferred embodiment of the present invention to aid the technical understanding An overview of the operation principle of the hybrid antenna system will be described first.

The mobile-mounted hybrid antenna operating in the triple band (Ka / K / Ku band) according to the present invention can provide satellite multimedia communication service and satellite broadcast reception service under a satellite communication environment. The Ka band and the K band are the transmission and reception frequencies for satellite communication, respectively, and the Ku band is the reception frequency band for satellite broadcasting. Here, it is assumed that Ka / K band and Ku band satellite are the same.

The hybrid antenna according to the present invention is a structure in which the high gain characteristic of the reflector antenna and the high speed electron beam scanning characteristic of the active phase array antenna are mixed, and include the reflector antenna and the feed active phase array antenna. Here, the feed active phased array antenna serves to form a current distribution of the reflecting plate antenna aperture, and the reflector plate converts electromagnetic waves radiated from the phased array feed into planar waves after reflection to form a desired beam pattern.

In order to realize a high gain mobile mounted antenna having a narrow beam width of about 0.5 °, the present invention provides an offset hybrid antenna structure having a two-dimensional electron beam scan, and tracks satellites coarsely by a driver device (stabilizer). It tracks satellites at high speed by two-dimensional micro-movement of the sub-reflection plate, and provides the function of tracking satellites at high speed by two-dimensional electron beam tracking function of active phase array for power supply.

1 is a configuration diagram of an embodiment of a hybrid antenna system according to the present invention.

As shown in FIG. 1, the hybrid antenna system according to the present invention includes a rotor system 1000, a stationary system 2000, and a stabilizer 3000.

Rotor system 1000 tracks the satellite direction using mechanical motion and electron beam tracking, including rotational motion, and triple-band (Ka, K, Ku band) frequencies through an external satellite (not shown) and free space. Performs transmission and reception of

The stationary system 2000 transmits and receives a communication and broadcast signal (S, L band) with an external mobile terminal system 4000, and receives AC power from the outside.

The stabilizer 3000 connects the rotor system 1000 and the stationary system 2000, and drives and controls the rotor system 1000 mechanically or electronically.

Detailed configuration and operation of the component will be described later in detail with reference to the accompanying drawings.

FIG. 2 is a detailed configuration diagram of an embodiment of the rotating system 1000 of FIG. 1.

As shown in FIG. 2, the rotor system 1000 according to the present invention includes a radiator 1100, a triple band transmit / receive active unit 1200, a first triplexer 1300, and a power / control unit 1400. do.

The radiator 1100 includes a Ka / K band radiator 1110 and a Ku band radiator 1120, and receives signals of the K band and Ku band frequencies from free space and transmits the signals to the triple band transmission / reception active unit 1200. And radiate the Ka band signal provided from the triple band transmission / reception active unit 1200 to free space. Detailed structure and operation of the radiator 1100 will be described later in detail with reference to the accompanying drawings.

The triple band transmit / receive active part 1200 includes a Ka band transmit active part 1210, a K band receive active part 1220, and a Ku band receive active part 1230, and downlink a signal provided from the radiator 1100. Frequency conversion is provided to the first triplexer (1300), and the signal received from the first triplexer (1300) up-frequency conversion to the radiator 1100, gain control of signal power, low noise amplification, phase control It performs signal processing functions such as beam shaping and control.

In addition, the Ku band receiving active unit 1230 is an active antenna structure that is directly attached to the rear of each sofa structure sub array of the Ku band flat array antenna, Ku band low noise amplifiers are used, the power supply is made through an RF coaxial cable. The Ka band transmission active unit 1210 receives the S-band signal from the first triplexer 1300, converts the uplink frequency into the Ka band, and amplifies and outputs the high power to the Ka / K band radiator 1110 (FIG. 10). See below). The K band receiving active unit 1220 receives the K band signal from the Ka / K band radiating unit 1110 and outputs the down-converted S band signal to the first triplexer 1300 (see FIG. 11 to be described later). .

The triple band transmit / receive active unit 1200 performing this function is connected to the first triplexer 1300, and the transmit signal power output from the first triplexer 1300 is transmitted to the Ka band transmit active unit 1210. The received signal power output from the K band reception active part 1220 and the Ku band reception active part 1230 is input to the first triplexer 1300.

The first triplexer 1300 is composed of three channels into which three band signals are input / output based on a common terminal. The first triplexer 1300 receives a down-frequency converted signal from the triple band transmission / reception active unit 1200 and processes the stabilizer. Provided to (3000), and processes the signal provided from the stabilizer (3000) to provide to the triple band transmission and reception active unit (1200). In addition, the first triplexer 1300 performs a channel amplification function, a signal suppression function, and a transmission signal ON / OFF function of the entire antenna system through the switch.

The power supply / control unit 1400 includes a control unit 1410 and a power supply unit 1420, and receives the AC power through the stabilizer to supply power and control data for driving and controlling the stabilizer 3000. It detects the voltage from the triple band transmit and receive active unit 1200 and provides power and phase data to the triple band transmit and receive active unit 1200. Detailed configurations and functions of the controller 1410 and the power supply 1420 will be described later in detail with reference to the accompanying drawings.

3 is a detailed block diagram of an embodiment of the fixture system 2000 of FIG. 1.

As shown in FIG. 3, the fixed body system 2000 according to the present invention includes a second triplexer 2100 and a monitoring controller 2200.

The second triplexer 2100 has a structure similar to that of the first triplexer 1300 described above, and is composed of three channels to which three band signals are input / output based on a common terminal, and a stabilizer 3000 and a signal are provided. To receive the S-band signal from the mobile terminal system 4000 by performing the out-of-band signal suppression function and the Ku-band signal to the L-band signal to perform the down-frequency conversion function, and to provide the L-band signal to the mobile terminal system 4000. do.

The monitoring controller 2200 controls phases of each of the Ka band transmitting active unit 1210, the K band receiving active unit 1220, and the Ku band receiving active unit 1230 for the electronic steering of the transmitting and receiving antenna beams. Monitor and control status.

FIG. 4 is a side cross-sectional view of an embodiment of the radiator 1100 of FIG. 2.

As shown in FIG. 4, the radiator 1100 of the hybrid antenna system according to the present invention is divided into a Ka / K band radiator 1110 and a Ku band radiator 1120.

The Ka / K band radiator 1110 is an offset double reflector antenna structure in which a main reflector 1111, a sub reflector 1112, and an active feed array 1113 are located on an upper side of the stabilizer 3000, and the incident / radiation is performed. Electromagnetic waves (dotted lines) are input / output to the active feed array 1113 after double reflection. Here, the main reflection plate 1111 is horizontally positioned on the stabilizer 3000. When the main reflector 1111 is installed horizontally, the center of gravity of the antenna system may be lowered to reduce the exercise load of the stabilizer 3000.

The Ku band radiating unit 1120 is a flat array antenna structure that is configured to reduce the overall height of the antenna by arranging the sub array antennas of the sofa structure in an elevation angle, and is positioned horizontally on the sub reflection plate 1112.

A typical Ku band flat array antenna has a relatively large antenna beam width (about 6 times the Ka / K band), so it is within the range of satellite tracking loss of less than 2 dB (TBC) even if only linked to the satellite tracking motion of the stabilizer 3000. You can track the satellite at. Accordingly, the Ku band radiating portion 1120 is positioned horizontally on the support mechanism (not shown) on the upper side of the sub-reflection plate 1112, and the sub-reflection plate 1112 support mechanism is the main reflection plate 1111 and the mechanism (not shown). Move together.

Also, in order to reduce the overall size of the antenna, the opening surfaces of the main reflection plate 1111 and the sub reflection plate 1112 are optimized in the form of a curvilinear rim.

5 is a plan view and a side view of a first embodiment of the radiator 1100 of FIG.

As shown in FIG. 5A, a top view, the first embodiment of the radiator 1100 according to the present invention includes a main reflector 1111a and a sub reflector 1111a in a limited circle. And an active feeding array 1131-a.

In addition, the edges of the sub-reflection plate 1111-a and the active feeding array 1131-a have a deformed elliptical structure, and the surface of the sub-reflection plate 1111-a has a flat structure.

As shown in the side view (b) of FIG. 5, it can be seen that the sub-reflective plate 1111-a has a flat surface structure.

6 is a plan view and a side view of a second embodiment of the radiation unit 1100 of FIG.

As shown in FIG. 6A, a top view, the second embodiment of the radiating part 1100 according to the present invention includes a main reflector 1111-b and a sub reflector 1111-b in a limited circle. And an active power feeding array 1131-b.

In addition, the edges of the sub-reflection plate 1111-b and the active feeding array 1131-b have a circular structure, and the surface of the sub-reflection plate 1111-b is appropriately molded.

As shown in FIG. 5 (b) Side View, it can be seen that the sub-reflective plate 1162-b is a molded sub-reflective plate 1162-b.

The antenna apertures of the first and second embodiments of the radiator 1100 according to the present invention have the same electrical characteristics of the antenna when the main reflector is the same and the sub reflector and the number of feeding arrays of the same size are used. Can be provided. Therefore, the following description is based on the first embodiment, and this description is equally applicable to the second embodiment.

FIG. 7 is a structural diagram of an embodiment of the active power feeding array 1113 of FIG. 4, showing an excitation layout of a power feeding array element.

As shown in FIG. 7, the active feed array 1113 according to the present invention is an elliptical structure in which the shape of the opening surface is modified, and is composed of 20 array elements. However, the number of array elements is a value determined by the total antenna gain and the antenna beam scan range, and it is obvious that the number of array elements may vary.

The opening surface of the unit array element of the active feeding arrangement 1113 according to the present invention may be a circular or spherical opening surface, which must be reflected in the antenna design.

7 is a structure in which array elements having a circular opening surface are grouped into four groups and divided into five groups 1113_G1 to 1113_G5, and the center group 1113_G2 is centered to improve cross polarization characteristics. Shows the excitation form of symmetry. Here, each number 0, 90, 180, 270 in the circle represents the rotation direction excited at each terminal.

FIG. 8 is a structural diagram of an embodiment of a dual band conical helix excitation device according to the present invention, and FIG. 9 is a diagram showing an exemplary structure of twenty feeding arrangements using the conical helix excitation device according to the present invention.

As shown in Fig. 8, the feeding arrangement elements of the active feeding arrangement 1113 according to the present invention have a dual band conical helix 4a excitation element structure. The dual bands represent the Ka band and the K band, respectively, and this excitation structure can be used for other frequency bands.

The transmission band (Ka band) signal of terminal 1 is input through a coaxial cable to the center of the circular waveguide 4d, connected with the helix at the connection point 4c, excited as a backward traveling wave of the starboard polarization, and reflected back to the floor conductor wall. It is converted into a forward traveling wave of the back port polarization and radiated to the sub-reflection plate through the expanded circular waveguide 4f.

On the other hand, the reception band (K band) signal of the starboard polarization incident from the sub-reflection plate is output directly to the terminal 2 through the conical helix 4a connected to the connection point 4b. At this time, it can be seen that the transmission and reception signals are different circularly polarized signals, and each transmission and reception polarization can be changed by the requirements.

FIG. 10 is a detailed configuration diagram of an embodiment of the Ka band transmission active unit 1210 of FIG. 2.

As shown in FIG. 10, the Ka band transmission active unit 1210 according to the present invention includes a transmission active module 1211, a transmission power distribution block 1213, and an uplink frequency converter composed of five multiple transmission active blocks 1212. Including the 1212, the S-band signal is received from the first triplexer 1300, is converted to the Ka band by up-frequency, and amplified by high power to be provided to the Ka / K band radiator 1110.

The uplink frequency converter 1214 performs a gain adjustment function that varies the strength of signal power in addition to the uplink frequency conversion function.

The transmission power distribution block 1213 receives the signal power output from the uplink frequency converter 1214 through one terminal and equally provides the five output terminals.

The transmit active module 1211 is composed of five identical transmit multiple active blocks 1212 positioned at the end. Each multiple transmit active block 1212 includes a power distribution function for equally outputting signal power input from one terminal to four output terminals, so that gain adjustment function of signal power, high output amplifier function and phase of signal power are provided. Perform the control function.

Accordingly, the transmission active module 1211 is composed of 20 transmission channels through five multiple transmission active blocks 1212 having four channels, and phase control of primary phase transmission phase shifters existing in each channel. Through the function, the transmission beam shaping and control function of the antenna system is performed.

FIG. 11 is a detailed block diagram of an exemplary embodiment of the K band receiving active part 1220 of FIG. 2.

As shown in FIG. 11, the K band reception active unit 1220 according to the present invention includes a reception active module 1221 consisting of five multiple reception active blocks 1222, a reception beam shaping block 1223, and a downlink frequency converter. 1224 and the tracking signal detector 1225, and receives the K-band signal from the Ka / K band radiator 1110, and outputs the down-frequency converted S band signal to the first triplexer (1300).

The receiving active module 1221 positioned at the input of the K band receiving active unit 1220 is composed of the same five multiple receiving active blocks 1222. Each of the multiple reception active blocks 1222 includes a power synthesis function for outputting signal power input from four terminals to one terminal, so that gain adjustment of signal power, low noise amplifier performance, and phase control function of signal power are provided. Perform.

Accordingly, the reception active module 1221 is composed of 20 reception channels through five multiple reception active blocks 1222 having four channels, and phase control of the first-level reception phase shifters existing in each channel. Through the function, the reception beam shaping and control function of the antenna system is performed.

The reception beamforming block 1223 has five input terminals and two output terminals connected to five multiple reception active blocks 1222. One terminal of the output terminal is connected to the downlink frequency converter 1224 # 1, and finally, the terminal is transferred to the mobile terminal system 4000 to be used for signal demodulation, and the other terminal is the downlink frequency converter 1224 # 2. It is connected to the tracking signal detector and is used for satellite positioning function. In addition, the receiving beam shaping block 1223 is composed of the same five channels, and has a tracking beam shaping and control function for satellite tracking through the phase control function of the phase shifters of the second level existing in each channel.

The hybrid antenna system according to the present invention sequentially forms four tracking beams offset around the main beam by second-level phase shifters in the receiving beam shaping block 1223, and uses them for satellite tracking.

As described above, the downlink frequency converter 1224 includes two blocks performing the same function, the downlink frequency converter # 1 and the downlink frequency converter # 2. In addition to the function of down-converting the input K-band signal to the S-band signal, a gain adjustment function for varying the strength of signal power is performed.

The tracking signal detector 1225 performs a function of detecting the IF signal power input from the downlink converter 1224 # 2 in the form of a voltage. Finally, the strength of the detected voltage is input to the controller to track the satellite. It is possible to determine the position of.

12 is a detailed block diagram of an embodiment of the stabilizer 3000 of FIG.

As shown in FIG. 12, the stabilizer 3000 according to the present invention includes a sub-reflection plate elevation angle driver 3011 and a sub-reflection plate azimuth drive driver for driving the stabilizer 3000 in the elevation and azimuth directions of the sub-reflection plate. 3013 and a sub-reflective plate elevation drive motor 3012 and a sub-reflection plate azimuth drive motor 3014, a stabilizer roll drive driver 3015, a stabilizer for driving the stabilizer 3000 in roll, pitch, yaw directions A riser pitch drive driver 3017 and a stabilizer yaw drive driver 3019 and a stabilizer roll drive motor 3016, a stabilizer pitch drive motor 3018 and a stabilizer yaw drive motor 3020. It includes a stabilizer attitude sensor 3021 for detecting the attitude of the stabilizer 3000 using external attitude sensor information such as an inclination sensor and an angular velocity sensor.

13 is a detailed block diagram of the controller 1410 of FIG. 2.

As shown in FIG. 13, the controller 1410 according to the present invention includes a satellite tracking controller 1411 and an attitude controller 1412.

The satellite tracking controller 1411 is connected to the supervisory control unit 2200 to transmit the antenna state to the supervisory control unit 2200, receives a user's command, and provides the antenna state information to the mobile terminal system 4000 and provides the command. Receives, and transmits a posture control command to the posture controller 1412 and receives the status information of the stabilizer.

When the attitude controller 1412 receives the attitude control command from the satellite tracking controller 1411, the attitude controller 1412 receives stabilizer attitude information from the stabilizer attitude sensor 3011 of the stabilizer 3000, and an external moving object attitude sensor such as a gyro and a GPS. The posture of the stabilizer 3000 is received through the driver drivers 3011, 3013, 3015, 3017, and 3019 of the stabilizer 3000 so that the antenna always faces the target satellite in response to the movement of the moving object. Perform a function to control.

FIG. 14 is a detailed block diagram of an embodiment of the power supply unit 1420 of FIG. 2.

As shown in FIG. 14, the power supply unit 1420 according to the present invention receives an external AC power from an external moving object or the like and distributes the power to a plurality of AC power terminals. It includes an AC / DC converter 1421 for receiving the input to convert to DC.

The AC power supplied by the AC power distributor 1422 is supplied to the drive drivers 3011, 3013, 3015, 3017, and 3019 of the stabilizer 3000 that needs an AC power source. The other devices may be supplied directly from the AC / DC converter 1421 or from the satellite tracking controller 1411.

15 is a flowchart illustrating a satellite tracking control process of the hybrid antenna system according to the present invention.

First, the hybrid antenna system acquires azimuth and elevation angle information of a target satellite for satellite communication or satellite broadcasting (target satellite position information acquisition process) (2100).

Subsequently, the posture is controlled using the mechanical driving device of the stabilizer 300 so that the antenna beam is directed to the enhancement target satellite despite the movement of the moving object (posture control process) (2200).

Subsequently, the sub-reflection plate of the hybrid antenna system captures satellite signals while performing two-dimensional mechanical scanning by zig-zag (satellite signal capture process) 2300.

Subsequently, in order to track the satellite signals continuously captured in response to the movement of the moving object, the captured satellite signals are sensed by the active phase arrangement, and the relative position change of the target satellite is detected, and mechanical beam steering by the sub-reflection plate is performed in the changed relative position direction. The target satellite is continuously tracked by interlocking the electronic beam steering by the active phased array (satellite tracking process) 2400.

As described above, the process of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form. Since this process can be easily implemented by those skilled in the art will not be described in more detail.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

As described above, the present invention has the effect of providing a hybrid antenna system having both the advantages of a mechanical antenna and a phased array antenna by mechanically coarse tracking and electronically fast tracking finely. have.

In addition, the present invention has an effect that can be provided in the multi-band hybrid antenna system that can be mounted on the mobile to provide both satellite multimedia communication service and satellite broadcast reception service.

In addition, the present invention has the effect of providing a triple-band two-dimensional hybrid antenna system having the ultra-fast electron beam tracking characteristics of the phased array antenna and the high gain characteristics of the reflector antenna.

In addition, the present invention has the effect that it is possible to provide the antenna structure shape, the dual band excitation element structure, the feeding arrangement, the transmission and reception active portion configuration and the satellite tracking algorithm of the main reflection plate and the sub-reflection plate.

In addition, the present invention has the effect that can be economically implemented a multi-band high-gain mobile-mounted antenna.

In addition, the present invention has an effect that can be provided on the mobile station to provide the Ka / K band satellite multimedia communication service and Ku band satellite broadcasting reception service through the geostationary orbit satellite.

Claims (44)

delete A multiband hybrid antenna system for mechanically coarse tracking a target satellite and high speed fine tracking electronically to provide a communication service and / or a satellite broadcast reception service. A rotating body unit for tracking a satellite direction by using a mechanical motion including a rotational motion and an electron beam tracking function, and performing transmission and reception of multi-band frequencies through the satellite and free space; Fixing unit for performing communication with the external terminal system and / or transmitting and receiving a broadcast signal; And Stabilization driving means for connecting the rotating body portion to the fixed body, and for driving and controlling mechanically or electronically Including, The rotating body portion, A main reflection plate horizontally positioned above the stabilization driving means; A sub-reflective plate spaced apart from the main reflective plate at a predetermined interval through the free space; And Active feeding arrangement unit for inputting and outputting beam steering electronically with a predetermined beam width after double reflection of the incident and radiated electromagnetic waves through the main reflection plate and the sub reflection plate Multiband hybrid antenna system comprising a. The method of claim 2, The main reflection plate, Mechanically linked with the stabilization drive means, The sub-reflection plate, And moving mechanically together with the main reflector, and moving up, down, left, and right in a predetermined width. The method of claim 3, wherein The opening surface of the main reflection plate and the sub-reflection plate, A multiband hybrid antenna system, characterized in that of the form of a curvilinear rim. The method of claim 4, wherein The main reflection plate, the sub-reflection plate and the active feeding array unit, Observing from above, the multi-band hybrid antenna system is characterized in that the main reflection plate, the sub-reflection plate and the active feed array arranged in a limited circle. The method of claim 5, Edges of the sub-reflective plate and the active feed array is of a modified elliptical structure, The surface of the sub-reflection plate is a multi-band hybrid antenna system, characterized in that the flat structure. The method of claim 6, The edges of the sub-reflective plate and the active feed array are circular structure, The surface of the sub-reflection plate is a multi-band hybrid antenna system, characterized in that the molded structure. The method of claim 7, wherein The active feeding arrangement unit, A multi-band hybrid antenna system having a structure in which the array elements are divided into predetermined groups and arranged in a predetermined group, and have a structure of up, down, left, and right symmetry around a group located in the middle to improve cross polarization characteristics. The method of claim 8, The array element, A multi-band hybrid antenna system, characterized in that it is a dual band conical helis excitation element. The method of claim 9, The dual band conical helix excitation device, A multiband hybrid antenna system, characterized in that both ends of a conical conductor are connected to transmit and receive feed terminals for operation with circular polarizations of different frequencies. The method of claim 10, The fixed part, It is composed of multiple channels and performs the signal suppression function out of band by inputting and outputting the signal with the stabilization driving means, and converts the signal of the broadcast reception band to the downlink frequency to provide to the external terminal system, received from the external terminal system A second triplexer for providing a signal to the first triplexer; And Supervisory control means for controlling the phase of the transmit / receive active portion for electronic steering of the transmit and receive antenna beams, and for monitoring and controlling the antenna status Multiband hybrid antenna system comprising a. The method of claim 2, The stabilization drive means, An elevation angle / azimuth driver for driving the stabilization driving means in an elevation angle and an azimuth direction of the sub-reflection plate through the power and control data received from the power source / control unit; And Roll pitch driving unit for driving the stabilization driving means in the roll, pitch and yaw direction through the power and control data received from the power / control unit Multiband hybrid antenna system comprising a. The method of claim 12, The elevation angle bearing part, An elevation drive motor for driving the stabilization drive means in the elevation direction of the sub-reflection plate; Elevation angle driving motor operation means for controlling and operating the elevation angle driving motor; An azimuth driving motor for driving the stabilization driving means in the azimuth direction of the sub-reflection plate; Azimuth drive motor operation means for controlling and operating the azimuth drive motor; And Stabilization drive posture sensor for detecting the attitude of the stabilization drive means Multiband hybrid antenna system comprising a. The method of claim 12, The roll pitch request drive unit, A roll driving motor for driving the stabilization means in a roll direction; Roll driving motor operating means for controlling and operating the roll driving motor; A pitch drive motor for driving the stabilization means in a pitch direction; Pitch drive motor operating means for controlling and operating the pitch drive motor; A required motor for driving the stabilization means in the yaw direction; And Required moving motor operating means for controlling and operating the required moving motor Multiband hybrid antenna system comprising a. The method of claim 2, The rotating body portion, Radiating means for receiving a signal of a communication reception band from a free space using a main reflection plate and a sub-reflection plate, radiating a signal of a communication transmission band into a free space, and receiving a signal of a broadcast reception band; Transmitting and receiving unit for down-frequency converting the signal provided from the radiating means, up-frequency converting the provided signal to the radiating means to perform a signal processing function; A multi-band signal is input / output based on a common terminal, and receives and processes the down-frequency converted signal from the transmitting / receiving active part to provide the stabilization drive means, and the signal provided from the stabilization drive means. A first triplex for processing to provide to the transmit / receive active unit; And To provide power and control data for driving and controlling the stabilization driving means to the stabilization driving means, detecting a voltage from the transmitting / receiving active part, and providing the power and phase data to the transmitting / receiving active part. Power supply / control section Multiband hybrid antenna system comprising a. The method of claim 15, The radiating means, Communication band transmission and reception unit of the offset double reflector antenna structure for transmitting and receiving communication band signal; And Broadcast band receiving radiation unit for horizontally located on the sub-reflection plate to receive a broadcast band signal Multiband hybrid antenna system comprising a. The method of claim 16, The broadcast band receiving radiation unit, A multi-band hybrid antenna system, comprising: a flat array antenna structure, and a sub array antenna of a sofa structure arranged in an elevation angle. The method of claim 17, The communication band transmitting and receiving radiating unit, A main reflection plate horizontally positioned above the stabilization driving means; A sub-reflection plate spaced apart from the main reflection plate at a predetermined interval through the free space; And Active feed array for inputting and outputting the incident and radiated electromagnetic waves after the double reflection through the main reflection plate and the sub-reflection plate Multiband hybrid antenna system comprising a. The method of claim 16, The transmitting and receiving active part, A broadcast band receiving active unit for amplifying and outputting a broadcast signal received using a broadcast band low noise amplifier; A communication band transmission active unit for up-converting the signal received from the first triplexer to a transmission frequency for satellite communication, amplifying high output, and providing the signal to the communication band transceiver unit; And Communication band reception active unit for down-frequency conversion of the signal provided from the communication band transmission and reception unit Multiband hybrid antenna system comprising a. The method of claim 19, The transmitting and receiving active part, The transmit signal power output from the first triplex is connected to the communication band transmitting active unit, and the received signal power output from the communication band receiving active unit and the broadcast band receiving active unit is connected to the first triplexer. Multi-band hybrid antenna system characterized in that the structure is input to the lexer. The method of claim 19, The broadcast band receiving active portion, And an active antenna structure attached to the rear side of each sofa structure sub array of the broadcasting band receiving radiation unit. The method of claim 21, The communication band transmission active unit, Up-frequency converting means for up-converting the input signal and performing a gain adjustment function for varying the strength of the signal power; Transmission power distribution means for receiving the signal power output from the uplink frequency converting means into one terminal and equally distributing the signal power to a plurality of output terminals; And Transmission active module including multiple multiple transmission active blocks for equally distributing and outputting signal power input from one terminal to multiple output terminals Multiband hybrid antenna system comprising a. The method of claim 22, The transmission active module, A multiband hybrid antenna system, characterized in that it performs a gain adjustment function of a signal power, a high output amplifier power of a signal power, and a phase control function. The method of claim 23, wherein The transmission active module A multi-band hybrid antenna system for performing transmission beam shaping and control of the antenna system through a first-level phase control function existing in a plurality of transmission channels. The method of claim 19, The communication band receiving active portion, A receiving active module composed of a plurality of multiple receiving active blocks for synthesizing and outputting signal powers input from a plurality of terminals; Tracking beam shaping for satellite tracking through a plurality of channels, each of which is connected to an output terminal of the multiple reception active block, and a phase control function of phase shifters of a second level existing in each channel; Receiving beam forming means for performing a control function; Down frequency converting means for down frequency converting and outputting a signal received from the reception beam forming means; And Tracking signal detecting means for detecting the signal power input from the downlink frequency converting means in the form of voltage and outputting it to the power supply / control unit. Multiband hybrid antenna system comprising a. The method of claim 25, The multiple receiving active block, A multiband hybrid antenna system, characterized in that it performs a gain adjustment function of the signal power, a low noise amplifier function of the signal power, and a phase control function. The method of claim 25, The downlink frequency converting means, It includes two down-frequency converters that perform the same function, One down-frequency converter outputs an output signal to the first triplexer for signal demodulation, And the other downlink frequency converter outputs an output signal to the tracking signal detecting means for tracking the position of the satellite. The method of claim 25, The receiving beam forming means, And using the second level phase shifters to sequentially form offset four tracking beams around a main beam for use in satellite tracking. The method of claim 16, The power / control unit, A power supply unit configured to receive AC power through the stabilization driving means to distribute and convert AC power and DC power; And A control unit for providing control data for driving and controlling the stabilization driving means, detecting a voltage from a transmission / reception active unit, and providing power and phase data to the transmission / reception active unit. Multiband hybrid antenna system comprising a. The method of claim 29, The control unit, Satellite tracking control means for transmitting an antenna state to the stationary part, receiving a user's command, providing an attitude control command, and receiving state information of the stabilization driving means; And A posture for receiving a posture control command from the satellite tracking control means and receiving posture information from the stabilization drive means to control the posture of the stabilization drive means so that the antenna always faces a target satellite even when the fixed body moves; Control means Multiband hybrid antenna system comprising a. The method of claim 29, The power supply unit, AC power distribution means for receiving an external AC power to distribute to a plurality of AC power terminals; And  AC / DC conversion means for receiving the divided AC power input and converting into DC Multiband hybrid antenna system comprising a. The method of claim 15, The communication transmission band is Ka band, The communication reception band is K band, The broadcast reception band is a multi-band hybrid antenna system, characterized in that the Ku band. The method of claim 15, The first triplexer, Multi-band hybrid antenna system characterized in that for performing the antenna transmission signal ON / OFF function using a switch. The method of claim 11, The second triplexer, A multi-band hybrid antenna system having a structure similar to the first triplex and having three channels to which three-band signals are input / output based on a common terminal. A multiband hybrid antenna for providing a communication service and a satellite broadcast reception service, A communication band transmitting / receiving antenna having an offset double reflector structure including a main reflector and a sub reflector to transmit and receive communication band signals; And Broadcast band reception antenna positioned horizontally on the sub-reflection plate to receive broadcast band signals Multiband hybrid antenna comprising a. 36. The method of claim 35 wherein The broadcast band receiving antenna, A multi-band hybrid antenna having a flat array antenna structure, wherein the sub-array antenna of the sofa structure is arranged in an elevation angle. 36. The method of claim 35 wherein The main reflector plate Located horizontally on the fixture to be attached, The sub-reflection plate, The multi-band hybrid antenna, characterized in that spaced apart at a predetermined interval via the main reflector and the free space. The method of claim 37, The communication band transmit and receive antenna, Active feed array for inputting and outputting the incident and radiated electromagnetic waves after the double reflection through the main reflection plate and the sub-reflection plate Multiband hybrid antenna further comprising. The method of claim 38, The main reflection plate, Mechanically linked with the appliance, The sub-reflection plate, A multi-band hybrid antenna, which moves mechanically together with the main reflector, also moves by itself. The method of claim 39, The opening surface of the main reflection plate and the sub-reflection plate, A multiband hybrid antenna, characterized in that it has a curvilinear rim shape. The method of claim 38, The main reflection plate, the sub-reflection plate and the active feeding array unit, Observing from the upper side is a multi-band hybrid antenna, characterized in that the main reflector plate, the sub-reflection plate and the active feed array arranged in a structure. 42. The method of claim 41 wherein Edges of the sub-reflective plate and the active feed array is of a modified elliptical structure, The surface of the sub-reflection plate is a multi-band hybrid antenna, characterized in that the flat structure. The method of claim 40, The edges of the sub-reflective plate and the active feed array are circular structure, The surface of the sub-reflection plate is a multi-band hybrid antenna, characterized in that the molded structure. A satellite tracking method of a hybrid reflector system with a dual reflector structure using mechanical drive and electron beam tracking to mechanically coarse and electronically fast track fine tracking of a target satellite. Acquiring target satellite position information by the hybrid antenna system for acquiring azimuth and elevation angle information of a target satellite for satellite communication or satellite broadcasting; A posture control step of controlling the posture so that the antenna beam is directed to the enhancement target satellite despite the movement of the device equipped with the hybrid antenna system using the mechanical drive device; A satellite signal capturing step of capturing satellite signals while performing two-dimensional mechanical scanning of the sub-reflection plate of the hybrid antenna system by zig-zag; And In order to track the satellite signal continuously captured in response to the movement of the device equipped with the hybrid antenna system, the captured satellite signal is sensed relative to the change in the relative position of the target satellite by using the active phase arrangement and the sub-reflection plate in the changed relative position direction. A satellite tracking step that continuously tracks the target position by interlocking the mechanical beam steering and the electronic beam steering by active phase alignment. Satellite tracking method of the hybrid antenna system comprising a.

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