Patent ID: 7412255
Filing Date: 2008-08-12
Classification: H01Q,H04B

Abstract:
1. An antenna arrangement which is operable in various mobile communication systems comprising a first, a second, a third, a fourth, and a fifth system which use different frequencies, the antenna arrangement, comprising transmitter/receivers of a multi-mode phone, at least two antennas, at least one filter placed between the first antenna and the transmitter/receivers by which signals to be transmitted are filtered before being taken to the first antenna and by which signals to be received through the first antenna are filtered, at least one controllable switch placed between the first antenna and the transmitter/receivers by which the signals to be transmitted are connected to the first antenna and by which the signals to be received through the first antenna are connected to one of the transmitter/receivers, wherein in an antenna arrangement consisting of two antennas the signals are transmitted so that the first antenna transmits signals of the second, third and fourth systems, and signals are received so that signals of the third system are received through the first antenna, signals of the second and fourth systems are received through the second antenna and wherein in an antenna arrangement consisting of three antennas the signals are transmitted so that the first antenna transmits signals of the second system, the second antenna transmits signals of the fifth system, and signals are received so that signals of the second system are received through the second antenna and signals of the fifth system are received through the third antenna.