Sunday, September 17, 2006

In-the-Glass Satellite Radio Antenna

On September 14, 2006, AGC Automotive had the following patent application published for an In-the-Glass satellite radio antenna. AGC currently supplies products to many of the OEMs.


United States Patent Application 20060202898
Kind Code A1
Li; Qian ; et al. September 14, 2006

DUAL-LAYER PLANAR ANTENNA

Abstract

An antenna for receiving an RF signal from a satellite is preferably integrated with a window of a vehicle. The window preferably includes a first nonconductive pane and a second nonconductive pane laminated together with a PVB adhesive layer. A first conductive layer is disposed on one of the surfaces of the nonconductive panes and a second conductive layer is disposed on another of the surfaces of the nonconductive panes. The second conductive layer includes a main slot extending thereinto. The main slot defines a feed line region and ground plane regions. The second conductive layer also includes stub slots extending into the ground plane regions for antenna impedance matching and providing the antenna with a circular polarization.


Inventors: Li; Qian; (Ann Arbor, MI) ; Villarroel; Wladimiro; (Worthington, OH)
Correspondence Name and Address:
    HOWARD & HOWARD ATTORNEYS, P.C.
THE PINEHURST OFFICE CENTER, SUITE #101
39400 WOODWARD AVENUE
BLOOMFIELD HILLS
MI
48304-5151
US
Assignee Name and Adress: AGC Automotive Americas R&D, Inc.

Serial No.: 077609
Series Code: 11
Filed: March 11, 2005

U.S. Current Class: 343/713
U.S. Class at Publication: 343/713
Intern'l Class: H01Q 1/32 20060101 H01Q001/32


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They note the the antenna can also be used to transmit. One has to wonder it there is an application in mind for transmitting. The following section is more descriptive of the invention:

[0027] Referring to the Figures, wherein like numerals indicate corresponding parts throughout the several views, an antenna is shown generally at 20 in FIG. 1. In the preferred embodiment, the antenna 20 is utilized to receive a circularly polarized radio frequency (RF) signal from a satellite. Specifically, the antenna 20 of the preferred embodiment may receive a circularly polarized RF signal produced by a Satellite Digital Audio Radio Service (SDARS) provider, such as XM.RTM. Satellite Radio or SIRIUS.RTM. Satellite Radio. However, those skilled in the art realize that the antenna 20 may also be used to transmit the circularly polarized RF signal. Furthermore, the antenna 20 may be alternately configured to transmit or receive a desired elliptically polarized RF signal, including a linearly polarized RF signal.


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