Automobile antenna system
First Claim
Patent Images
1. An automobile antenna system comprising:
- a first casing mode of synthetic resin and having an elongated opening at one end;
loop antenna means fixed and secured within said first casing and having a portion arranged facing the opening of said first casing, said loop antenna means being provided for detecting surface currents induced on a vehicle body by broadcast waves;
a second casing made of metal and integrally connected to said first casing;
circuit means housed and electrostatically shielded within said second casing and connected to said loop antenna means for processing a signal detected by said loop antenna means;
said first casing, said second casing, said loop antenna means and said circuit means comprising a high-frequency pickup; and
mounting means for mounting said high-frequency pick up at a given position in proximity to a marginal edge portion of the vehicle body where the induced surface currents are concentrated.
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Abstract
An automobile antenna system mounted on a vehicle body electromagnetically detects surface currents induced on the vehicle body by broadcast waves. The antenna system includes a casing, a loop antenna and circuitry housed in the casing. A part of the loop antenna which is exposed from an opening provided in the casing is mounted on the vehicle body in proximity to a marginal edge portion thereof. The casing has a metallic electrostatically shielded portion for housing the circuitry.
52 Citations
7 Claims
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1. An automobile antenna system comprising:
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a first casing mode of synthetic resin and having an elongated opening at one end; loop antenna means fixed and secured within said first casing and having a portion arranged facing the opening of said first casing, said loop antenna means being provided for detecting surface currents induced on a vehicle body by broadcast waves; a second casing made of metal and integrally connected to said first casing; circuit means housed and electrostatically shielded within said second casing and connected to said loop antenna means for processing a signal detected by said loop antenna means; said first casing, said second casing, said loop antenna means and said circuit means comprising a high-frequency pickup; and mounting means for mounting said high-frequency pick up at a given position in proximity to a marginal edge portion of the vehicle body where the induced surface currents are concentrated. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification