Ku-frequency-band miniaturized polarization rotating mechanism assembly

Abstract

The invention discloses a Ku-frequency-band miniaturized polarization rotating mechanism assembly, and belongs to the field of communications. The Ku-frequency-band miniaturized polarization rotatingmechanism assembly comprises a rotating mechanism for adjusting signal polarization matching and a rotating joint for transmitting a signal, wherein the rotating mechanism comprises a center waveguideused as a rotor and a fixed barrel used as a stator; the center waveguide is movably assembled in an inner cavity of the fixed barrel; the side wall of the center waveguide is fixedly connected witha rotor matching block; the inner wall of the fixed barrel is fixedly connected with a stator matching block; a side waveguide channel which circularly extends along the periphery of the center waveguide is closed between the rotor matching block and the stator matching block; two ends of the side waveguide channel are respectively communicated with a signal input coupling port reserved on the center waveguide and a signal transceiver side port reserved on the fixed barrel; and a polarization angle of the side waveguide channel is changed by changing an angle between the rotor matching block and the stator matching block. A mode adopted in the Ku-frequency-band miniaturized polarization rotating mechanism assembly is to rotate a polarization separator inside a feed source network to realize matching of polarization of an antenna with polarization of an external signal; and as the rotated polarization separator is small in size, the complexity of the rotating mechanism is reduced, and the size of a servo motor which drives the rotation is reduced.

Description

Technical field [0001] The invention relates to a Ku-band miniaturized polarization rotating mechanism assembly in the fields of satellite communications, satellite broadcasting, and electronic reconnaissance signals, and is particularly suitable for miniaturization of structural size, high reliability of electrical performance, and multi-frequency sharing. The antenna is especially suitable for use in vehicle antennas, ship antennas, and airborne antennas. Background technique [0002] With the rapid development of modern communication technology, the demand for miniaturization of satellite communication systems is becoming stronger and stronger, which leads to more miniaturization requirements for the size of the antenna structure, in order to ensure that the antenna can be installed on the miniaturized carrier Inevitably, the antenna system is required to be small in size and light in weight, and the antenna is also required to have good electrical characteristics. Therefore,...

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Problems solved by technology

However, these two methods of adjusting the polarization angle also have their own disadvantages. The first disadvantage is that the installed feed network structure is complex and large because the entire feed network rotates together, which requires a larger servo motor to drive. The second disadvantage is that due to The low-noise amplifier in the receiving frequency band is connected with the feed network for rotation. The power supply and signal cable winding of the low-noise amplifier is more complicated, and it needs to occupy a certain amount of winding space. The third disadvantage is that the power supply and signal cables of the low-noise amplifier are often Winding, its performance reliability becomes worse

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