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Dual Polarized Quad Ridge Square Horn Array Antenna for Satellite Communication in Motion

A satellite communication and array antenna technology, which is applied to antennas, antennas, antenna arrays and other directions suitable for movable objects, which can solve the problems of interfering with the normal work of users, disturbing the normal work of satellites, and being unable to access the network, and achieve good broadband. Band performance, low insertion loss, and excellent antenna performance

Active Publication Date: 2016-03-16
NANJING YOUQIAO ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Satellite communication antennas in motion are installed on airplanes, trains, automobiles and ships, while satellites that transmit communication information are in a synchronous orbit 36,000km from the ground. Due to the high density of satellites in the synchronous orbit, satellite communication antennas in motion are When a satellite sends information, first of all, the wide-angle sidelobe envelope of the antenna must meet the technical index requirements stipulated by the ITU. If this requirement is exceeded, it will interfere with the normal operation of adjacent satellites in synchronous orbit, and the ITU will prohibit network access.
Secondly, the orthogonal polarization isolation of the antenna must also meet the requirements of the technical indicators stipulated by the ITU, otherwise it will interfere with the normal work of the users of the same satellite orthogonal polarization multiplexing, and will also be banned from the network by the ITU
The requirements of these two technical indicators are the first conditions that the satellite communication antenna in motion must meet in the launch state, otherwise it cannot be connected to the network.

Method used

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  • Dual Polarized Quad Ridge Square Horn Array Antenna for Satellite Communication in Motion
  • Dual Polarized Quad Ridge Square Horn Array Antenna for Satellite Communication in Motion
  • Dual Polarized Quad Ridge Square Horn Array Antenna for Satellite Communication in Motion

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Embodiment 1

[0029] This embodiment is a dual-polarized four-ridge square horn array antenna for satellite communication in motion for sending and receiving electromagnetic wave signals. The composition of the antenna system is as follows: figure 1 shown. The array antenna of this antenna system has 192 square horns with four ridges arranged in an equidistant square regular array, with 32 columns in the azimuth plane and 6 rows in the elevation plane (see attached Figure 17 As shown), the diameter of each four-ridge square horn is 38.60mm, and the size of the array surface is 1204.20mm×226.60mm. There are 192 four-ridge square horns in the entire array surface, and each four-ridge square horn is connected with an orthogonal mode Connect to form a four-ridge square horn orthogonal mode combination (that is, OMT ridge horn). When manufacturing, 192 OMT ridge horns and two power distribution networks are processed as a whole. First divide the whole into two big blocks, each with a total o...

Embodiment 2

[0041] This embodiment is a dual-polarized four-ridge square horn array antenna for satellite communication in motion that transmits and receives electromagnetic wave signals. The composition of the antenna system is still as attached figure 1 shown. In this embodiment, the structural features and mutual structural forms of the 192 square horns with four ridges, 192 orthogonal mode couplers, the horizontal H power distribution network and the vertical V power distribution network are the same as those in Embodiment 1.

[0042] This embodiment is different from Embodiment 1 in the shape of the metal compensation grid plate. The metal compensation grid plate in this embodiment is composed of rectangular horizontal bars and rectangular vertical bars. There are thirteen horizontal bars, and its shape is as follows: Figure 13 As shown, the horizontal bars are arranged from top to bottom, and the specific numbers are horizontal bars 01 , horizontal bar 02 , ..., horizontal bars ...

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Abstract

The invention relates to a dual-polarized four-ridge square horn array antenna for satellite communication in motion, which is characterized in that: 192 four-ridge square horns are arranged in a square regular array with equal intervals, 32 columns in the azimuth plane, and 6 rows in the pitch plane , at the mouth of 192 four-ridge square horns, there is a metal compensation grid plate, which divides each four-ridge square horn into four small radiation units, so that the entire array surface forms 768 The spacing of the small radiating elements is less than one wavelength, so that when the two surfaces are fed with equal amplitude and same phase, there will be no grating lobes in the visible space, which can meet the technical index requirements of the ITU for the wide-angle sidelobe envelope of network access. The antenna system of the present invention has advanced technical indicators, stable and reliable operation, low insertion loss and low noise, and the antenna is ultra-thin and low-profile. , remote sensing and telemetry.

Description

technical field [0001] The invention relates to a mobile satellite communication (communication in motion) antenna, especially a dual-polarized four-ridge square horn array antenna. Background technique [0002] Satellite communication antennas in motion are installed on airplanes, trains, automobiles and ships, while satellites that transmit communication information are in a synchronous orbit 36,000km from the ground. Due to the high density of satellites in the synchronous orbit, satellite communication antennas in motion are When a satellite sends information, first of all, the wide-angle sidelobe envelope of the antenna must meet the technical index requirements stipulated by the ITU. If this requirement is exceeded, it will interfere with the normal operation of adjacent satellites in synchronous orbit, and the ITU will prohibit network access. . Secondly, the orthogonal polarization isolation of the antenna must also meet the requirements of the technical indicators ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q13/02H01Q21/00H01Q1/32
Inventor 邱家恒胡哲东宋红武李树楠朱礼成
Owner NANJING YOUQIAO ELECTRONICS TECH
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