Patent ID: 9124354
Filing Date: 2015-09-01
Classification: H04B

Abstract:
1. A wireless transceiver comprising: at least one antenna; a transmitter coupled to the antenna for transmitting wireless signals; a receiver coupled to the antenna for receiving wireless signals; an isolation circuit configured to: a protection circuit configured to protect the receiver from high-energy signals, the protection circuit including a snapback transistor configured as a switch and in series with a resistor, the snapback transistor including a gate, a drain coupled to an input of the receiver and a source coupled to ground, the snapback transistor further configured to: a controller configured to couple the gate to a bias voltage to close the gate in the transmit mode so that a transmit leakage signal from the output of the isolation circuit is shunted to ground, and to decouple the gate from the bias voltage to open the gate in the receive mode.