Patent ID: 6021318
Filing Date: 2000-02-01
Classification: H04B

Abstract:
A transceiver switchover arrangement for alternatingly connecting at least one first receiver apparatus and one second receiver apparatus and at least one first transmitter apparatus and one second transmitter apparatus with a single signal coupling/decoupling element said first receiver apparatus and said first transmitter apparatus operating in a first frequency band and said second receiver apparatus and said second transmitter apparatus operating in a second frequency band, said transceiver switchover arrangement comprising:a first on-off switching apparatus connected between a terminal of said first transmission apparatus and a terminal of said signal coupling/decoupling element;a second on-off switching apparatus connected between a terminal of said second transmitter apparatus and said terminal of said signal coupling/decoupling element;a first line section and a second line section connected at a node in series between said terminal of said signal coupling/decoupling element and a terminal of said first receiver apparatus;each of said first line section and said second line section substantially representing a quarter-wave line for said second frequency band and said first line section connected in series with said second line section substantially representing a quarter-wave line for said first frequency band;a third on-off switching apparatus connected between said node and a terminal for a fixed potential;a fourth on-off switching apparatus connected between said node and a terminal of said second receiver apparatus; anda fifth on-off switching apparatus connected between a further node connecting said second line section and said terminal of said first receiver apparatus, and said terminal for a fixed potential.