A low dropout voltage regulator circuit that dynamically adjusts its output voltage has a voltage adjustment circuit in communication with a dynamic voltage controlling circuit for modifying the output voltage of the low dropout voltage regulator. Various other methods, systems, and computer-readable media are also disclosed. A filter circuit has its cut off frequency selectively set to pass the Low-IF signal only, or both the Low-IF and High-IF signals. An emitter polysilicon layer positioned entirely within the aperture in engagement with the emitter region, the spacer and the substrate without overlapping the base polysilicon layer. The techniques described herein can utilize two different data sets to accommodate changes in the geographical coverage associated with a cell ID and reduce the probability of putting the cell center estimate in awkward or unlikely locations. The bristles of the brush seal are disposed about the rotor and extend axially so that the terminal free ends of the bristles engage the sealing surface of the mating ring.