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Portable radio housing incorporating diversity antenna structure

  • US 5,649,306 A
  • Filed: 09/16/1994
  • Issued: 07/15/1997
  • Est. Priority Date: 09/16/1994
  • Status: Expired due to Term
First Claim
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1. A diversity antenna structure for a radio having radio circuitry operative in a radio communication system, the radio having a first movable housing element and a second housing element, the first movable housing element movable between an extended position and a closed position and a substantial portion of the radio circuitry disposed within the second housing element, said antenna structure comprising:

  • a first antenna disposed in the first movable housing element and operative when the first movable housing element is in the extended position;

    a second antenna disposed in the second housing element and operative when the first movable housing element is in the closed position;

    a third antenna disposed in the second housing element, and operative when the first movable housing element is in the extended position and when the first movable housing element is in the closed position; and

    a first switch device operatively coupled to the first housing element, said first antenna, said second antenna, and the radio circuitry, said switch device selectively coupling one of said first antenna and said second antenna to the radio circuitry, wherein said switch device is responsive to the position of said first movable housing element for switching in said first antenna when the first housing element is in the extended position and for switching in said second antenna when the first housing element is the closed position.

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