Radio-frequency integrated circuit and method for setting a phase in a radio-frequency channel

A method for setting a phase in a radio-frequency channel, the method comprising:

• feeding a signal into the radio-frequency channel;
• using a first phase shifter to set a phase of the radio-frequency channel based on predetermined phase values of a modulation scheme for signals of the radio-frequency channel;
• and
• using a second phase shifter to fine-tune the phase of the radio-frequency channel based on fine-tuning information, the fine-tuning comprising switching a selection of a plurality of passive phase-shifting elements into the radio-frequency channel in accordance with the fine-tuning information,
• wherein the plurality of passive phase-shifting elements comprises a plurality of resonators.

A radio-frequency integrated circuit, comprising:

• a first radio-frequency channel;
• a first phase shifter in the first radio-frequency channel configured to set a phase of the first radio-frequency channel based on predetermined phase values of a modulation scheme for signals of the first radio-frequency channel;
• and
• a second phase shifter in the first radio-frequency channel configured to fine-tune the phase of the first radio-frequency channel based on fine-tuning information, the second phase shifter having a plurality of passive phase-shifting elements which are each able to be connected into the first radio-frequency channel or able to be disconnected from the first radio-frequency channel, the second phase shifter being configured to change a phase of the first radio-frequency channel by switching a selection of the plurality of passive phase-shifting elements into the first radio-frequency channel in accordance with the fine-tuning information,
• wherein the plurality of passive phase-shifting elements are combinable for selection such that one or more passive phase-shifting elements are effectively switched into the first radio-frequency channel to change the phase, and
• wherein at least one phase change is effected by two or more passive phase-shifting elements of the plurality of passive phase-shifting elements.