Antenna Transmit Receive Switch

摘要

An antenna switch is presented. The antenna switch can connect an antenna to either transmit circuitry or receive circuitry, depending on control signals applied to the antenna switch while presenting different impedances to a connected circuitry.

主权项

1. A circuital arrangement comprising:
a first port; a second port; a third port; a first transistor arrangement; a second transistor arrangement; a first reactive element; and a control signal; wherein the circuital arrangement is configured to operate in one of a first mode and a second mode of operation, a mode of operation being determined by the control signal, wherein: during the first mode of operation, the circuital arrangement is configured to present a first impedance at the first port and a second impedance at the second port and to provide a first electrical conduction path between the second port and the first port through the first transistor arrangement, while isolating the third port from the first electrical conduction path; and during the second mode of operation, the circuital arrangement is configured to present the first impedance at the first port and a third impedance different from the first impedance and the second impedance at the third port and provide a second electrical conduction path between the third port and the first port through the second transistor arrangement connected in series with the first reactive element, while isolating the second port from the second electrical conduction path.