Transmission/reception switching circuit and wireless communication terminal
AssigneeSony Semiconductor Solutions Corporation
InventorsHideshi Motoyama, Shota Hayakawa
Life of this patent
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Abstract
Performance is improved in a wireless communication terminal in which an antenna is connected to a transmission circuit and a reception circuit. A transmission/reception switching circuit includes a first N-type transistor and a second N-type transistor. The first N-type transistor has a drain connected to the antenna and a gate to which a constant voltage is applied. Furthermore, the second N-type transistor has a drain connected to a source of the first N-type transistor and a gate to which a transmission signal is input. Furthermore, the second N-type transistor supplies a reception signal from one of a source and the drain.
Claims17
A transmission/reception switching circuit, comprising:
- a first N-type transistor having a drain connected to an antenna and a gate to which a constant voltage is applied;
- and
- a second N-type transistor having a drain connected to a source of the first N-type transistor, having a gate to which a transmission signal is input, and supplying a reception signal from one of a source and the drain.
A wireless communication terminal, comprising:
- a first N-type transistor having a drain connected to an antenna and a gate to which a constant voltage is applied;
- a second N-type transistor having a drain connected to a source of the first N-type transistor, having a gate to which a transmission signal is input, and supplying a reception signal from one of a source and the drain;
- a transmission circuit that supplies the transmission signal;
- and
- a reception circuit that processes the reception signal.
Dependencies are inferred from the claim text.