摘要:
An all-in-one multi-band antenna includes: a first antenna element configured to operate at a first frequency band, the first antenna element including a first ground, a first radiating part, and a first feed line and a first feed point through which a signal power is applied to the first radiating part; and a second antenna element configured to operate at a second frequency band, the second antenna element including a second ground, a second radiating part, and a second feed line and a second feed point through which a signal power is applied to the second radiating part, wherein the second radiating part is provided within a pseudo-cavity formed at a center portion of the first radiating part.
摘要:
An antenna system includes: an orthogonal multi-polarization antenna configured to output independent double orthogonal polarizations through two independent input/output terminals; an antenna main control unit configured to perform a polarization control algorithm, collect and analyze information for polarization control, and provide polarization control information; and a polarization control unit configured to perform independent amplitude and phase control with regard to a pair of independent channels connected to the orthogonal multi-polarization antenna, based on the polarization control information received from the antenna main control unit, so that various polarizations are formed.
摘要:
Provided is an antenna for a base station and a repeater capable of electrically or mechanically controlling the individual operation of an element antenna constituting an array antenna or a sub-array antenna so as to adaptively cope with the change in the communication environment, and having an economic and high performance transmitting and receiving function, and a method of controlling a mode of the antenna. The multi-mode antenna includes a radiation portion having one or more array antenna and capable of selectively changing an antenna effective opening surface and changing a resistance direction of an antenna beam pattern, an active channel portion connected to the array antennas and including switches, transmission and receiving channels, and a signal combiner and splitter, and a modem and control portion connected to the active channel portion and having a control portion and a modem.
摘要:
Provided is an antenna system for tracking a satellite which includes a fixed body and a rotating body. The antenna system includes a transmitting/receiving unit having a transmitting channel and a receiving channel for signal power, a driving unit for enabling mechanical motion of the rotating body for satellite tracking, and a control unit for monitoring and controlling the operation of the driving unit. Accordingly, the various kinds of the components of the antenna system mounted and operated on the movable body can be minimized and the output of the transmitted signal required in the antenna system can be simply replaced, thereby simplifying the configuration of the system and reducing the production cost of the system. In addition, the STR having the tracking signal processing function in the digital mode as well as the general analog mode is mounted on the antenna system, thereby improving accuracy of satellite tracking. Moreover, the posture of the antenna system can be stably maintained regardless of the motion of the movable body in the moving environment by using the driving unit and the control unit which are designed for stably controlling the elevation, azimuth and antenna rotating angle, thereby improving communication performance that is the intrinsic object of the antenna system.
摘要:
An antenna with controlled sidelobe characteristics includes: a power coupler configured to receive a signal to be transmitted and generate and output a main channel signal and an auxiliary channel signal; a main channel power distributor configured to receive the outputted main channel signal and distribute power of the main channel signal; a main antenna configured to receive the power-distributed signal, the main antenna including a one-dimensional or two-dimensional array of a number of antenna elements; a vector signal controller configured to control amplitude and phase of the auxiliary channel signal; an auxiliary channel power distributor configured to receive the controlled amplitude and phase of the auxiliary channel signal and distribute power of the auxiliary channel signal; and an auxiliary antenna independently installed separate from the main antenna, the auxiliary antenna including an antenna element or an array of a number of antennas.
摘要:
Provided is an antenna system for tracking a satellite which includes a fixed body and a rotating body. The antenna system includes a transmitting/receiving unit having a transmitting channel and a receiving channel for signal power, a driving unit for enabling mechanical motion of the rotating body for satellite tracking, and a control unit for monitoring and controlling the operation of the driving unit. Accordingly, the various kinds of the components of the antenna system mounted and operated on the movable body can be minimized and the output of the transmitted signal required in the antenna system can be simply replaced, thereby simplifying the configuration of the system and reducing the production cost of the system. In addition, the STR having the tracking signal processing function in the digital mode as well as the general analog mode is mounted on the antenna system, thereby improving accuracy of satellite tracking. Moreover, the posture of the antenna system can be stably maintained regardless of the motion of the movable body in the moving environment by using the driving unit and the control unit which are designed for stably controlling the elevation, azimuth and antenna rotating angle, thereby improving communication performance that is the intrinsic object of the antenna system.
摘要:
Provided are Circular Polarized Helical Radiation element and its Array Antenna operable in TX band and RX band. The circular polarized helical radiation element and its array antenna and the antenna with double reflection boards using that array can operate at TX/RX dual band which is high frequency such as Ka band by operating the helical antenna in axial mode and implementing dual feeding structure. The array antenna having a number of radiation elements operable in the both of TX band and RX band, wherein the radiation elements are arrayed on predetermined column lines, each radiation element comprising: a helix for radiating orthogonal circular polarized waves in the different frequency bands wherein the helix is fed at its beginning point and its terminating point; and a wave guide for accommodating the helix.
摘要:
A Ka-band offset hybrid antenna having a shaped focuser is disclosed. The Ka-band offset hybrid antenna having a shaped focuser, including: a shaped focuser for reflecting a received plane wave to focus an energy of the received plane wave on an offset focal line and reflecting a transmitting signal; and an active feed array module for receiving the reflected received plane wave from the shaped focuser and radiating the transmitting signal to the shaped focuser antenna, wherein the active feed array module including a feed horn array antenna having a plurality of single horns and an active channel block (ACB) having multi-active channels for changing a direction angle of transceiving beam.
摘要:
Provided are Circular Polarized Helical Radiation element and its Array Antenna operable in TX band and RX band. The circular polarized helical radiation element and its array antenna and the antenna with double reflection boards using that array can operate at TX/RX dual band which is high frequency such as Ka band by operating the helical antenna in axial mode and implementing dual feeding structure. The array antenna having a number of radiation elements operable in the both of TX band and RX band, wherein the radiation elements are arrayed on predetermined column lines, each radiation element comprising: a helix for radiating orthogonal circular polarized waves in the different frequency bands wherein the helix is fed at its beginning point and its terminating point; and a wave guide for accommodating the helix.
摘要:
A Ka-band offset hybrid antenna having a shaped focuser is disclosed. The Ka-band offset hybrid antenna having a shaped focuser, including: a shaped focuser for reflecting a received plane wave to focus an energy of the received plane wave on an offset focal line and reflecting a transmitting signal; and an active feed array module for receiving the reflected received plane wave from the shaped focuser and radiating the transmitting signal to the shaped focuser antenna, wherein the active feed array module including a feed horn array antenna having a plurality of single horns and an active channel block (ACB) having multi-active channels for changing a direction angle of transceiving beam.