Patent ID: 8909171

Claim:
An RE antenna switch circuit comprising: an antenna; an input/output terminal comprising at least one transmitting terminal and at least one receiving terminal; at least one transmitting switch block disposed on a transmitting path(s) between the at least one transmitting terminal and an antenna-side common node and transmitting a signal according to a control signal; at least one receiving switch block disposed on a receiving path(s) between the at least one receiving terminal and the common node and transmitting a signal to the receiving terminal according to a control signal a plurality of shunt switch blocks shunt-connected to the at least one transmitting terminal side on the transmitting path and the at least one receiving terminal side on the receiving path in parallel to the transmitting and receiving switch blocks, respectively; and a common switch block sharing a switching device and turned on by synchronizing with each of transmitting and receiving operations, on transceiving the signal through the antenna, wherein when one of the transmitting and receiving operations is turned on, the other is turned off, wherein when one of the transmitting and receiving switch blocks is turned on, the shunt switch block, which is shunt-connected in parallel to it, is turned off and the remaining shunt switch block, which is not shunt-connected, is turned on.