Selectable capacitance circuit
View Patent ↗A voltage-controlled capacitor and methods for forming the same are described. A mechanical conductor membrane of the voltage-controlled capacitor is movable to and from a first position and a second position. An amount of capacitance can vary with the movement of the mechanical conductor membrane. A microelectromechanical systems (MEMS) voltage-controlled capacitor can be used in a variety of applications, such as, but not limited to, RF switches and RF attenuators.
1. An RF device, comprising:
a conductive line configured to carry an RF signal, wherein the conductive line carries a control signal; and
a deformable membrane having at least two actuatable positions for selectively capacitively filtering the RF signal, wherein the deformable membrane is capable of movement based on the control signal, wherein the deformable membrane comprises two or more separate membranes, wherein the RF device is configured such that at least one of the membranes comprises two or more portions, wherein the two or more portions are independently actuatable.
2. The RF device as defined in claim 1 , wherein the RF device is configured such that the two or more separate membranes are independently actuatable.
3. The RF device as defined in claim 1 , further comprising:
a display;
a processor that is in electrical communication with said display, said processor being configured to process image data;
a memory device in electrical communication with said processor.
4. The RF device as defined in claim 3 , further comprising:
a first controller configured to send at least one signal to said display; and
a second controller configured to send at least a portion of said image data to said first controller.
5. The RF device as defined in claim 3 , further comprising an image source module configured to send said image data to said processor.
6. The RF device as defined in claim 5 , wherein said image source module comprises at least one of a receiver, transceiver, and transmitter.
7. The RF device as defined in claim 3 , further comprising an input device configured to receive input data and to communicate said input data to said processor.