RECONFIGURABLE VARACTOR BANK FOR A VOLTAGE-CONTROLLED OSCILLATOR

摘要

Aspects of a reconfigurable varactor array for providing a capacitance to control an output frequency of a voltage-controlled oscillator are provided. The reconfigurable varactor array can be configured to provide a configurable capacitance. The reconfigurable varactor array can include a plurality of varactor cells connected in parallel. The reconfigurable varactor array can also include a control circuit configured to receive a control signal to select the configurable capacitance from the reconfigurable varactor array. The control circuit can include a plurality of switch groups. Each switch group can be separately connected to one varactor cell in the reconfigurable varactor array. The control signal from the control circuit can control operation of each switch group.

主权项

1. An apparatus for providing a capacitance, the apparatus comprising:
a reconfigurable varactor array configured to provide a configurable capacitance, the reconfigurable varactor array comprising:
a plurality of varactor cells, each varactor cell independently controlled and connected in parallel; anda control circuit configured to receive control signals to select the configurable capacitance from the reconfigurable varactor array, the control circuit comprising:
a plurality of switch groups, each switch group separately connected to ends of one varactor cell in the reconfigurable varactor array, wherein the control signals independently control operation of each switch group to control each varactor cell independently.