Enhanced pixel for multiband sensing including a signal path to receive a flow of signals flowing through a control device

An imaging device having a focal plane array that includes an imaging pixel array, the imaging pixel array comprising:

• a plurality of imaging pixels, the imaging pixels comprising:
• a control device to control flow of a charge signal from a photodetector, the control device having a variable impedance that varies in response to frequency of an input signal, the control device being biased to permit signals to flow through the control device dependent on the frequency of signals being output by the photodetector;
• a low-frequency signal path that receives a flow of signals that flow through the control device;
• and
• a high-frequency signal path independent of the low-frequency signal path and the control device, the high-frequency signal path receiving high-frequency signals included in the charge signal.

A method for processing multiband signals output in an imaging pixel, the method comprising:

• receiving charge signals output by a photodetector;
• changing impedance of a signal path flowing through a control device in response to received first charge signals arriving at the control device having a different frequency than previously received second charge signals;
• permitting the received charge signals to flow through the control device dependent on the frequency of the charge signals;
• propagating the first signals along a first signal path that enters and exits the control device;
• and
• propagating the second signals along a second signal path independent from the first signal path and the control device, the second signals having a higher frequency than the first signals.