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A vehicle mounted antenna and methods for transmitting and/or receiving signals

A technology for transmitting signals and antennas, which is applied in the field of vehicle antenna devices, and can solve the problems of low profile of vehicle antennas, interference with smooth airflow, and beautiful vehicles.

Inactive Publication Date: 2015-06-24
MOBILE SAT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it should be noted that in order not to interfere with the smooth airflow over the vehicle or negatively affect the aesthetics of the vehicle, the profile of the vehicle antenna must be kept low

Method used

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  • A vehicle mounted antenna and methods for transmitting and/or receiving signals
  • A vehicle mounted antenna and methods for transmitting and/or receiving signals
  • A vehicle mounted antenna and methods for transmitting and/or receiving signals

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Embodiment Construction

[0057] The present invention, in certain embodiments thereof, relates to apparatus and methods for vehicular antennas, and more particularly, but not exclusively, to apparatus and methods for vehicular antennas for satellite communications.

[0058] According to an embodiment of the invention there is provided an antenna, such as a dual reflector antenna, for communicating with a satellite from a moving vehicle. An antenna, which may be referred to herein as a vehicular antenna, includes a transmitter for generating a transmitted signal and / or a receiver for receiving and decoding a signal, a main reflector and a sub-reflector, a feed horn, and a A waveguide for conducting the transmit signal towards the sub-reflector and back. The transmitter is optionally connected to a polarizing element mounted behind the main reflector and allowing polarization of the transmitted signal. The secondary reflector redirects the transmission signal towards the main reflector, which projects ...

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PUM

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Abstract

An invention relating to a method for communicating through a satellite, comprising: generating a transmission signal; polarizing said transmission signal using an ortho-mode transducer (OMT); radiating said polarized transmission signal via a feed horn (108) so as to generate an ellipsoidal beam so as to create a first elliptical spot with a width-height ratio of at least 1.6:1 on a sub reflector (102); and redirecting said ellipsoidal beam toward a main reflector (101) so as to create a second elliptical spot having a width-height ratio of at least 3.5:1 on said main reflector; directing said ellipsoidal beam as an antenna beam toward the satellite; and rotating said OMT (108) to adjust a polarization of said antenna beam.

Description

technical field [0001] The present invention, in certain embodiments thereof, relates to apparatus and methods for vehicular antennas, and more particularly, but not exclusively, to apparatus and methods for vehicular antennas for satellite communications. Background technique [0002] There is increasing interest in implementing broadband communication systems on various forms of mobile platforms such as marine vessels and land vehicles. For broadband satellite communication systems with antennas mounted on vehicles, the antennas are used to help form communication links with space-based satellites in geosynchronous orbit. The antenna forms part of a communication terminal carried by the vehicle. [0003] There is a need for antennas with the ability to track communication satellites with high accuracy from mobile platforms such as aircraft, ships, and land vehicles, especially to optimize data rates, improve the efficiency of downlink and uplink transmissions, and / or prev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/18H01Q1/28H01Q1/32H01Q3/08H01Q3/20H01Q13/02H01Q13/06H01Q19/19H01P1/161
CPCH01Q1/185H01Q1/28H01Q1/32H01Q3/08H01Q3/20H01Q13/0225H01Q13/0258H01Q13/065H01Q19/192H01P1/161H01Q1/18H01Q19/19
Inventor Z·贝雷吉克
Owner MOBILE SAT LTD