Television – Image signal processing circuitry specific to television – Color television signal processing
Patent
1995-05-22
1996-06-18
Le, Hoanganh
Television
Image signal processing circuitry specific to television
Color television signal processing
343711, H01Q 132
Patent
active
055283144
ABSTRACT:
A vehicle antenna comprises a transparent, electrically conducting, film between the inner and outer glass sheets of a vehicle window. The film comprises a horizontally elongate principal element substantially parallel to and spaced from the upper edge portion of the window aperture and having an effective horizontal length of an odd multiple of one quarter of a predetermined wavelength and an impedance matching element. The impedance matching element comprises a main portion having a peripheral edge with a horizontal upper portion spaced below the principal element and a remainder spaced from the remaining edge portion of the window aperture so as to form a slot transmission line having an effective length of one half the wavelength, which is preferably in the commercial FM band. The impedance matching element further comprises a narrow vertical portion connecting the main portion to the principal element, so that the slot transmission line is parasitically coupled to the principal element. The impedance matching element covers substantially the entire main viewing area of the window, especially if its upper edge is overlapped by an upper dark tinted region of the window. Thus, (1) the antenna more commercially acceptable due to the uniform appearance of the window, (2) the antenna has superior AM band gain due to its large size, and (3) the film may be effectively provided with an infrared reflecting substance for internal vehicle temperature reduction.
REFERENCES:
patent: 4768037 (1988-08-01), Inaba et al.
patent: 4849766 (1989-07-01), Inaba et al.
patent: 4864316 (1989-09-01), Kaoru et al.
patent: 4866453 (1989-09-01), Nagy et al.
patent: 5005020 (1991-04-01), Ogawa et al.
patent: 5012255 (1991-04-01), Becker
patent: 5017933 (1991-05-01), Sakurai et al.
patent: 5083135 (1992-01-01), Nagy et al.
patent: 5355144 (1994-10-01), Walton et al.
Bellinger Mark
Martin Douglas C.
Nagy Louis L.
Delco Electronics Corporation
General Motors Corporation
Le Hoang-anh
Sigler Robert M.
LandOfFree
Transparent vehicle window antenna does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transparent vehicle window antenna, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transparent vehicle window antenna will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-226433