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US 2015/0318852 A1Published application
Rf switch circuit
AssigneeNXP B.V.
InventorsGian Hoogzaad, Jozef Bergervoet
Life of this patent
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Abstract
A RF switching arrangement (400) is described including a bias swap circuit (30). The bias swap circuit switches the bias voltage dependent on the state of the RF switch. This improves the performance of the RF switch without requiring charge pump circuitry.
Claims15
A RF switching circuit for coupling an antenna to a RF circuit, the RF switching circuit having a first mode of operation and a second mode of operation and comprising:
- a switch arranged to switchably couple a RF signal input to a RF signal output, the switch comprising a first transistor having a first terminal, a second terminal, and a control terminal;
- a bias swapping circuit having a bias voltage output coupled to the first terminal and the second terminal;
- wherein
- the bias swapping circuit is operable to switch the bias voltage output between a first bias voltage value and a second bias voltage value in response to a change in the mode of operation of the RF switching circuit.
1 more element
Dependencies are inferred from the claim text.