Methods and devices for ramping a switched capacitor power amplifier
AssigneeStichting IMEC Nederland
InventorJac Romme
Life of this patent
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Abstract
A method for ramping a switched capacitor power amplifier is disclosed, where the switched capacitor power amplifier comprises a plurality of capacitors in a capacitor bank, and where a number of the capacitors in the capacitor bank are activated. The method comprises changing the number of capacitors in the capacitor bank that are activated, maintaining the changed number of activated capacitors in the capacitor bank for a period of time, and repeating the changing and maintaining, where a length of the period of time is varied between at least two repetitions of the maintaining.
Claims20
A method comprising:
- ramping a switched capacitor power amplifier, wherein the switched capacitor power amplifier comprises a plurality of capacitors in a capacitor bank, wherein a number of the capacitors in the capacitor bank are activated, an activated capacitor being configured to be repeatedly switched between being connected to ground and connected to a supply, and wherein the ramping comprises:
- changing the number of capacitors in the capacitor bank that are activated;
- maintaining the changed number of activated capacitors in the capacitor bank for a period of time;
- and
- repeating the changing and maintaining, wherein a length of the period of time is varied between at least two repetitions of the maintaining.
A device for generating a radio frequency signal, the device comprising:
- a switched capacitor power amplifier, wherein the switched capacitor power amplifier comprises a plurality of capacitors in a capacitor bank, and wherein a number of the capacitors in the capacitor bank are activated, an activated capacitor being configured to be repeatedly switched between being connected to ground and connected to a supply;
- and
- a control unit for controlling ramping of the switched capacitor power amplifier, the control unit being configured to:
- send a control signal to change the number of capacitors in the capacitor bank that are activated;
- maintain the changed number of activated capacitors in the capacitor bank for a period of time;
- and
- repeat the sending of the control signal and the maintaining, wherein a length of the period of time is varied between at least two repetitions of the maintaining.
A handheld unit for communicating on a wireless network, the handheld unit comprising:
- a switched capacitor power amplifier, wherein the switched capacitor power amplifier comprises a plurality of capacitors in a capacitor bank, and wherein a number of the capacitors in the capacitor bank are activated, an activated capacitor being configured to be repeatedly switched between being connected to ground and connected to a supply;
- and
- a control unit for controlling ramping of the switched capacitor power amplifier, the control unit being configured to:
- send a control signal to change the number of capacitors in the capacitor bank that are activated;
- maintain the changed number of activated capacitors in the capacitor bank for a period of time;
- and
- repeat the sending of the control signal and the maintaining, wherein a length of the period of time is varied between at least two repetitions of the maintaining.
Dependencies are inferred from the claim text.