Structure of vehicular active antenna system of mobile and satel

Details Structure of vehicular active antenna system of mobile and satel Structure of vehicular active antenna system of mobile and satel

1998-08-21

2000-09-26

Ho, Tan

Communications: radio wave antennas

Antennas

With vehicle

343766, 342375, H01Q 132

Patent

active

061248320

ABSTRACT:
This invention relates to a structure of an active antenna system of a mobile and a satellite navigation method using the system. The present invention provides a structure of an active antenna system of a mobile and a satellite tracking method using the system, in which beams are formed and then directed by using sub-array concept, the tracking accuracy becomes to high by using double beam satellite tracking mode for tracking the satellite, tracking loss is reduced and positions are more accurately tracked during movement using an absolute steering sensing mode.

REFERENCES:
patent: 5666792 (1997-09-01), Mullins
patent: 5826165 (1998-10-01), Echeita et al.
patent: 5831545 (1998-11-01), Murray et al.
Jiro Hirokawa, Makoto Ando, Naohisa Goto, Nobuharu Takahashi, Takashi Ojima and Masahiro Uematsu; A Single-Layer Slotted Leaky Waveguide Array Antenna for Mobile Reception of Direct Broadcast from Satellite; 1995; pp. 749-754 .

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