Patent ID: 6842629
Filing Date: 2005-01-11
Classification: H04B

Abstract:
1. A base station arrangement for connecting a first antenna and a second antenna to a first port, intended for transmitting and receiving radio frequency signals, and a second port, intended for receiving radio frequency signals, of a transceiver unit, comprising: a first circulator unit, a second circulator unit and a four port splitter unit, said first circulator unit having a first port connected to the first port of the transceiver unit, a second port connected to the first antenna and a third port connected to a first port of the splitter unit; said first circulator unit being designed so that signals inputted at its first port are outputted at its second port only, signals are inputted at its second port are outputted at its third port only, and signals inputted at its third port are outputted at its first port only; said second circulator having a first port connected to the second antenna and a second port connected a to second port of the splitter unit and a third port; said second circulator being designed so that signals inputted at its first port are outputted at its second port only, signals inputted at its second port are outputted at its third port only, and signals inputted at its third port are outputted at its first port only; said splitter unit having a third port connected to said second port of the transceiver unit; said splitter unit being designed so that signals inputted at its first port are outputted at its second and third ports, and that signals inputted at its second port are outputted at its first and fourth ports.