摘要:
A Radio Frequency (RF) front end system and method are disclosed. The RF front end system comprises an antenna, a matching network coupled to the antenna, a power amplifier (PA) coupled to the matching network via a port on a transmit path, a low noise amplifier (LNA) coupled to the matching network via the port on a receive path and at least one transmit/receive switch (T/R SW) coupled between the port and at least one of the PA and LNA.
摘要翻译:公开了射频(RF)前端系统和方法。 RF前端系统包括天线,耦合到天线的匹配网络,经由发射路径上的端口耦合到匹配网络的功率放大器(PA),经由所述匹配网络经由所述发射路径耦合到所述匹配网络的低噪声放大器(LNA) 端口和耦合在端口与PA和LNA中的至少一个之间的至少一个发送/接收开关(T / R SW)。
摘要:
A hybrid circuit (42) for use with communications transceivers. The hybrid circuit (42) combines the function of an ESD protection circuit (12) with the function of a TX/RX switch (10). The input node of the hybrid circuit (42) is connecting between the source of an ESD event (60) and a device to be protected (44). The hybrid circuit (42) includes an ESD protection element (50), which is triggered by a triggering transistor (52). The gate of the triggering transistor (52) is connected to a driver (54) for turning the triggering transistor (52) on during transmission and for turning the triggering transistor (52) off during reception.
摘要:
A hybrid circuit (42) for use with communications transceivers. The hybrid circuit (42) combines the function of an ESD protection circuit (12) with the function of a TX/RX switch (10). The input node of the hybrid circuit (42) is connecting between the source of an ESD event (60) and a device to be protected (44). The hybrid circuit (42) includes an ESD protection element (50), which is triggered by a triggering transistor (52). The gate of the triggering transistor (52) is connected to a driver (54) for turning the triggering transistor (52) on during transmission and for turning the triggering transistor (52) off during reception.
摘要:
A biasing scheme for compensating for a difference in biasing currents between a first circuit element (10) and second circuit element (32) in a stacked circuit configuration. A current-difference source (38) generates a difference current that is substantially equal to the difference between the biasing currents of the first circuit element (10) and second circuit element (32) in order to compensate for process, temperature and supply variations.
摘要:
A Radio Frequency (RF) front end system and method are disclosed. The RF front end system comprises an antenna, a matching network coupled to the antenna, a power amplifier (PA) coupled to the matching network via a port on a transmit path, a low noise amplifier (LNA) coupled to the matching network via the port on a receive path and at least one transmit/receive switch (T/R SW) coupled between the port and at least one of the PA and LNA.
摘要翻译:公开了射频(RF)前端系统和方法。 RF前端系统包括天线,耦合到天线的匹配网络,经由发射路径上的端口耦合到匹配网络的功率放大器(PA),经由所述匹配网络经由所述发射路径耦合到所述匹配网络的低噪声放大器(LNA) 端口和耦合在端口与PA和LNA中的至少一个之间的至少一个发送/接收开关(T / R SW)。