Patent ID: 6381471
Filing Date: 2002-04-30
Classification: H04B

Abstract:
A dual band radio telephone comprising:a first transceiver with a first receive branch and a first transmit branch, said first transceiver being operable in a first frequency band; a second transceiver with a second receive branch and a second transmit branch, said second transceiver being operable in a second frequency band; a dual band receive antenna comprising a first receive radiator and first receive feed point coupled to said first receive radiator, and a second receive radiator and a second receive feed point coupled to said second receive radiator, said first and second receive radiators being operable in said first and second frequency bands, respectively, and a dual band transmit antenna comprising a first transmit radiator and first transmit feed point coupled to said transmit radiator, and a second transmit radiator and a second transmit feed point coupled to said second transmit radiator, said first and second transmit radiators being operable in said first and second frequency bands, respectively, said first and second receive feed points being coupled to said first and second receive branches, respectively, and said first and second transmit feed points being coupled to said first and second transmit branches, respectively.