Device, module and circuit assembly for wireless communications, and configured for interference suppression via use of first and second phase shifters, a band stop filter and/or a diversity duplexer circuit
The present invention relates to a circuit assembly which comprises an antenna path (A 1 ), which can be connected to a first antenna (ANT 1 ), a transmission path (TX 1 ), a reception path (RX 1 ), a duplexer (DPX 1 ), operating with acoustic waves, which connects the transmission and reception paths (TX 1 , RX 1 ) in each case to the antenna path (A 1 ), and means for suppressing an interference signal.
1. A circuit assembly, comprising:
an antenna path, which is configured to be connected to a first antenna;
a transmission path;
a reception path;
a first duplexer, operating with acoustic waves, which connects the transmission and reception paths in each case to the antenna path;
a node in the antenna path, wherein the node is connected to a further signal path in which a band pass filter is connected to ground in series via an impedance, and
wherein the circuit assembly is configured to suppress an interference signal; and
a second antenna path, which is configured to be connected to a second antenna, a second transmission path, a second reception path and a second duplexer operating with acoustic waves, which connects the second transmission and the second reception paths to the second antenna path,
wherein the first antenna path is configured to be used for transmitting and receiving signals in a first frequency band and the second antenna path is configured to be used for transmitting and receiving signals in a second frequency band,
wherein the first antenna path is connected to a first diversity path configured for receiving signals in the second frequency band,
wherein the first diversity path is connected to a third duplexer, which connects the first diversity path to a diversity RX path and a diversity TX path, and
wherein the diversity TX path is connected to ground via an impedance such that the diversity TX path is configured to be used for dissipating an interference signal.
2. The circuit assembly according to claim 1 , wherein a band-stop filter is arranged in the antenna path.
3. The circuit assembly according to claim 1 or 2 , wherein a first phase shifter is interconnected between the antenna path and the transmission path.
4. The circuit assembly according to claim 3 , wherein a second phase shifter is interconnected between the antenna path and the reception path.
5. The circuit assembly according to claim 1 , wherein the second antenna path is connected to a second diversity path.
6. The circuit assembly according to claim 5 , wherein the second diversity path is connected to a fourth duplexer, which connects the second diversity path to a second diversity Rx path and second a diversity Tx path, and
wherein the second diversity Tx path is connected to ground via an impedance.
7. A module into which a circuit assembly according to claim 1 is integrated.
8. A device for wireless communication comprising a module according to claim 7 .