Switch linearizer
First Claim
Patent Images
1. A device comprising:
- an antenna tuning circuit comprising a digital variable capacitor (DVC), the DVC comprising;
a first plurality of switches coupled in series between a first terminal and a second terminal;
a first linearizer coupled to the first terminal and to the second terminal and coupled in parallel with the plurality of switches, the linearizer comprising at least one first varactor having an adjustable capacitance responsive to a tuning voltage;
a second plurality of switches coupled in series between the first terminal and the second terminal; and
a second linearizer coupled between the first terminal and the second terminal, the second linearizer coupled in parallel with the second plurality of switches and comprising at least one second varactor, wherein the first linearizer is configured to compensate for 3rd order distortion generated by the plurality of switches, and wherein the second linearizer is configured to compensate for 3rd order distortion generated by the second plurality of switches.
1 Assignment
0 Petitions
Accused Products
Abstract
Exemplary embodiments are related to switch linearizer. A device may include at least one switch. The device may further include a linearizer coupled to the at least one switch and configured to cancel at least a portion of distortion generated by the at least one switch in an off-state.
14 Citations
17 Claims
-
1. A device comprising:
an antenna tuning circuit comprising a digital variable capacitor (DVC), the DVC comprising; a first plurality of switches coupled in series between a first terminal and a second terminal; a first linearizer coupled to the first terminal and to the second terminal and coupled in parallel with the plurality of switches, the linearizer comprising at least one first varactor having an adjustable capacitance responsive to a tuning voltage; a second plurality of switches coupled in series between the first terminal and the second terminal; and a second linearizer coupled between the first terminal and the second terminal, the second linearizer coupled in parallel with the second plurality of switches and comprising at least one second varactor, wherein the first linearizer is configured to compensate for 3rd order distortion generated by the plurality of switches, and wherein the second linearizer is configured to compensate for 3rd order distortion generated by the second plurality of switches. - View Dependent Claims (2, 3, 4, 5, 6, 13, 14, 15, 16, 17)
-
7. A method comprising:
-
configuring a first plurality of switches in an off-state, the first plurality of switches coupled in series between a first terminal and a second terminal; cancelling at least a portion of 3rd order distortion generated by the first plurality of switches in the off-state with distortion generated by at least one first varactor that is included in a first linearizer coupled between the first terminal and the second terminal and in parallel with the first plurality of switches, the at least one first varactor having an adjustable capacitance responsive to a tuning voltage; configuring a second plurality of switches coupled in series between the first terminal and the second terminal; and cancelling at least a portion of 3rd order distortion generated by the second plurality of switches with distortion generated by at least one second varactor that is included in a second linearizer coupled between the first terminal and the second terminal and in parallel with the second plurality of switches. - View Dependent Claims (8, 9)
-
-
10. A device comprising:
means for tuning an antenna comprising means for providing a digital variable capacitance, the means for providing the digital variable capacitance comprising; means for configuring a first plurality of switches in an off-state, the first plurality of switches coupled in series between a first terminal and a second terminal; means for cancelling at least a portion of 3rd order distortion of the first plurality of switches in the off-state, the means for cancelling at least a portion of 3rd order distortion of the first plurality of switches coupled between the first terminal and the second terminal and in parallel with the first plurality of switches, and the means for cancelling at least a portion of 3rd order distortion of the first plurality of switches having a first adjustable capacitance based on a tuning voltage; means for configuring a second plurality of switches coupled in series between the first terminal and the second terminal; and means for cancelling at least a portion of 3rd order distortion generated by the second plurality of switches, the means for cancelling at least a portion of 3rd order distortion of the second plurality of switches coupled between the first terminal and the second terminal and in parallel with the second plurality of switches, and the means for cancelling at least a portion of 3rd order distortion of the second plurality of switches having a second adjustable capacitance. - View Dependent Claims (11, 12)
Specification