Patent
Glass antenna system for an automobile
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TLDR
A glass antenna system for an automobile comprises a main antenna disposed at an upper part of a glass plate for a rear window of the automobile and a defogging electric heating element disposed below and separate from the main antenna and comprising a plurality of heating strips and a pair of bus bars for supplying electricity to the heating strips.Abstract:
A glass antenna system for an automobile comprises a main antenna disposed at an upper part of a glass plate for a rear window of the automobile and a defogging electric heating element disposed below and separate from the main antenna and comprising a plurality of heating strips and a pair of bus bars for supplying electricity to the heating strips. The glass antenna system is characterized in that a lead wire is connected to a predetermined portion of the lower most heating strip among said heating strips and a feeding point for connection to an antenna feeder line is provided on the lead wire, whereby the defogging electric heating element constitutes a subsidiary antenna having a directivity different from the directivity of the main antenna.read more
Citations
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Patent
Glass antenna system for automobile
TL;DR: In this paper, a glass antenna system for an automobile comprises a T-shaped or pi-shaped dynamic impedance matching circuit, which is at least two varactor diodes each applied to a channel selection voltage to match the FM antenna impedance with that of the FM receiver.
Patent
Automotive window glass antenna
Yoji c,o Tech. Central Glass Co. Ltd. Nagayama,Shingo c,o Tech. Central Glass Co. Ltd Tadokoro,Tokio c,o Tech. Central Glass Co. Ltd Tsukada +5 more
TL;DR: In this paper, a known first antenna (4) is arranged in a space of a rear window glass (1) above a defogging heater element (2) and constituted by horizontal and vertical conductive strips (4a,b).
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A vehicle receiving apparatus using a window antenna
TL;DR: In this paper, the tuning conductors are formed by strip-shaped transparent conductive films (2a,2c) separated by cut lines (3a,3b) from a central portion of the film, which is connected by feeder electrodes (4a,4b) to a source of heating current.
Patent
Glass antenna for automobile
TL;DR: In this article, a glass antenna for an automobile uses a coil connected directly to a bus for defogging heaters as an FM subsidiary antenna and a T-shaped impedance matching circuit to provide a monotone change of impedance within the FM frequency band.
Patent
High frequency glass antenna for automobiles
TL;DR: In this article, a high frequency glass antenna for automobiles which is capable of having an improved antenna gain without changing the shape of a defogger is provided, where the defoggers, an antenna conductor, a feeding portion for the antenna, a grounding conductor and a grounding-side feeding portion are disposed in or on a rear window glass sheet for automobiles.
References
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Patent
Heater glass sheet with broad band receiver antennae
TL;DR: In this paper, a glass sheet with broad band receiver antennae and an area to be heated is presented, which is capable of functioning both as a heating conductor wire and as a first receiver antenna for receiving waves in a predetermined frequency band.
Patent
Electrical signal separating device for combined windshield antenna and heater grid
TL;DR: In this paper, a blocking circuit consisting of mutually coupled coils interposed between the d.c. power source and the terminals of the heating element of the window was proposed. But it was not shown to work in practice.
Patent
Antenna system for window glass of automobile
Kenichi Ishii,Hokusho Takayasu +1 more
TL;DR: In this paper, an antenna system for a rear window glass of an automobile comprises a defogging electric heating element and patterned conductive strips for antenna wherein the pattern of the antenna and the pattern for the bus bars for the heating element are modified to improve the non-directivity for FM radio broadcast waves of a radio receiver in the automobile.
Patent
Windshield antenna defroster combination with radio interference reduction
Hans Heinrich Prof Dr Meinke,Heinz Prof Dr Ing Lindenmeier,Friedrich Landstorfer,Gerhard Flachenecker,Jochen Hopf +4 more
TL;DR: In this paper, a window heater includes an arrangement of heating conductor sections provided on the window provided by a radio receiving antenna located in the vicinity of the heating conductor section, where the heating current flowing through one of the sections of each group also flows through the other section of the group but in the opposite direction.
Patent
Receiver for car
TL;DR: In this article, the 1st and 2nd antennas having different pattern are provided at the upper or lower part of a heating conductor wire group 2 of a front window glass 1, and the 2nd antenna elements 11 are coupled with the group 2 on the center line of the window glass.