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Simple mobile object position detecting system

  • US 6,269,302 B1
  • Filed: 12/01/1998
  • Issued: 07/31/2001
  • Est. Priority Date: 12/01/1997
  • Status: Expired due to Fees
First Claim
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1. A mobile object position detecting system for detecting a position of a mobile object having a transmitter, comprising:

  • an elongated antenna system that receives a direct radio wave signal from said transmitter and outputs first and second electrical signals from first and second ends of said antenna system, respectively, wherein said elongated antenna system emphasizes a surface wave mode; and

    a position detector, coupled to the first and second ends of said antenna system, that calculates the position of said mobile object in accordance with a difference in time between said first and second electrical signals.

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