US 11,923,877 B2 · Antenna switch circuit and method

Abstract

An antenna switch circuit and an antenna circuit switching method. The circuit includes an antenna port, a termination port (e.g., for disposal of power reflected back from an antenna and received through the antenna port in a transmit mode), and a receive port (e.g., for receiving a signal from the antenna port via the antenna switch circuit in a receive mode). The circuit also includes a first switch coupled between the antenna port and the termination port. The circuit further includes a resonant inductance coupled between the receive port and the node located between the antenna port and the first switch. The circuit also includes a second switch coupled between a reference potential and a node located between the resonant inductance and the receive port.

Claims15

Dependent claims

An antenna switch circuit comprising:

an antenna port;
a termination port;
a receive port;
a first switch coupled between the antenna port and the termination port;
a resonant inductance having a first terminal connected to the receive port and a second terminal connected to a node located between the antenna port and the first switch;
a second switch coupled between a reference potential and a node located between the resonant inductance and the receive port;
and
a series coupled capacitance and third switch that are coupled in parallel with the resonant inductance,
wherein the antenna switch circuit is switchable between:
a transmit mode in which each of the first switch, the second switch, and the third switch are in an on state;
and
a receive mode in which each of the first switch, the second switch, and the third switch are in an off state.

9 more elements

Dependencies are inferred from the claim text.

Antenna switch circuit and method

Life of this patent

Antenna switch circuit and method

Life of this patent

Abstract

Claims15