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Printed twin spiral dual band antenna

  • US 6,166,694 A
  • Filed: 07/09/1998
  • Issued: 12/26/2000
  • Est. Priority Date: 07/09/1998
  • Status: Expired due to Term
First Claim
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1. A communication device for use in a radio communication system, said device comprising:

  • a microphone opening for allowing the communication device to receive auditory information from a user;

    a speaker opening for allowing the communication device to transmit auditory information to said user;

    a keypad;

    a multiple band antenna comprising;

    a first arm and a second arm tuned to different frequency bands; and

    a matching bridge, connected to a feeding part in which each of the arms are attached, for matching an input impedance of said antenna,wherein said multiple band antenna is a built-in antenna.

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