RF Switch
OwnerThomas Leitner, Johann-Peter Forstner +1inventors
InventorsThomas Leitner, Johann-Peter Forstner, Udo Gerlach
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Abstract
A bipolar transistor switches for radio frequency signals are disclosed. In an embodiment a device includes a first radio frequency (RF) terminal, a second RF terminal, and a bipolar transistor, wherein an emitter terminal of the bipolar transistor is coupled to the first RF terminal, and wherein a collector terminal of the bipolar transistor is coupled to the second RF terminal. The device further includes a base current supply circuit configured to selectively supply a base current to a base terminal of the bipolar transistor.
Claims20
A device comprising:
- a first radio frequency (RF) terminal;
- a second RF terminal;
- a bipolar transistor, wherein an emitter terminal of the bipolar transistor is coupled to the first RF terminal, and wherein a collector terminal of the bipolar transistor is coupled to the second RF terminal;
- and
- a base current supply circuit configured to selectively supply a base current to a base terminal of the bipolar transistor.
A radio frequency (RF) switch device comprising:
- a first terminal;
- a second terminal;
- a bipolar transistor, wherein an emitter terminal of the bipolar transistor is coupled to the first terminal and a collector terminal of the bipolar transistor being coupled to the second terminal;
- a first capacitor coupled between the emitter terminal and the first terminal;
- a second capacitor coupled between the collector terminal and the second terminal;
- an impedance coupled between the emitter terminal and ground;
- and
- a switch coupled between a base terminal of the bipolar transistor and a positive supply voltage.
Dependencies are inferred from the claim text.