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Method and apparatus for accommodating two mobile station antennas that operate in the same frequency band

  • US 7,194,284 B2
  • Filed: 12/18/2001
  • Issued: 03/20/2007
  • Est. Priority Date: 12/18/2001
  • Status: Expired due to Term
First Claim
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1. A method for operating a multi-mode mobile station comprising at least first and second antennas, each of the first and second antennas having resonance frequencies, wherein at least two modes of the multi-mode mobile station operate within at least one common range of frequencies, the method comprising:

  • transmitting a signal from the first antenna of the mobile station in the common range of frequencies; and

    changing the resonance frequency of the second antenna of the mobile station so as to reduce coupling of the transmitted signal from the first antenna into the second antenna, wherein the step of changing comprises varying an impedance of at least one component that forms a part of the second antenna.

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