Patent
Circular antenna array for vehicular direction finding
Mohammad S. Sharawi,Farooq Sultan Sultan Khan,Daniel N. Aloi +2 more
- 19 Feb 2013
155
TL;DR: In this paper, a V-shaped and Yagi antenna array for vehicular direction finding applications is presented, which is a circular disc having a plurality of microstrip antennas radially spaced around the disc at equal angles.
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Abstract: The circular antenna array for vehicular direction finding applications is a circular disc having a plurality of microstrip antennas radially spaced around the disc at equal angles. In one embodiment, the circular antenna array includes V-shaped antennas, and in another embodiment, the antennas are Yagi antennas. The circular antenna array can operate under two modes, switched and phased, in the 2.45 GHz band with an operating bandwidth of at least 100 MHz. The circular antenna array is configured to be installed in vehicles. Selective transmittal of an RF signal from a key fob generates a response signal from a specific antenna element receiving the RF signal in line with the direction of origin thereof. An LED panel indicates proximity and direction to the vehicle being located.
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Citations
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References
Patent
Automotive direction finding system based on received power levels
Daniel N. Aloi,Mohammad S. Sharawi +1 more
- 03 Dec 2010
TL;DR: In this article, a system consisting of a key fob for transmission and receiving of a signal is described, in which a plurality of antennas are arranged in a circular pattern. And a signal processing unit is coupled to the array of antennas and the MCU.
332
Patent
Broadband/multi-band circular array antenna
Johnson J. H. Wang
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TL;DR: In this article, a broadband/multiband circular array antenna is described, which comprises a circular directional array antenna comprising a driven omnidirectional traveling-wave antenna element coupled to a transceiver via a feed and a plurality of surface-waveguide elements symmetrically positioned about and spaced from the antenna element.
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Patent
Multimode Vehicle Location Device and Method
Clark E. McCall,David T. Proefke,Ryan O'Keefe +2 more
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TL;DR: In this paper, a controller stores the downloaded information in the memory and presents RETURN-TO-VEHICLE information on the display in response to a user request, including photographic information concerning the parked vehicle's environment obtained by vehicle camera(s).
86
Patent
Direction finder and locator
Paul Abbruscato
- 29 Sep 2004
TL;DR: In this article, a hand-held direction finder is described that is used to locate a vehicle in a parking lot using a two-way radio link, operating in an unlicensed freely available band of the radio spectrum.
42
Patent
Automatic direction finding system
Harold N. Selim
- 07 Sep 1978
TL;DR: In this paper, an automatic direction finding (ADF) system including a direction finding antenna array which connects to a radio receiver to process an audio output signal selectively illuminating a segment of a segmented circular visual directional display indicating the direction from which the received signal arrived.
35