A cable modem system and method is provided for the transfer and processing of data in accordance with specialized data transfer protocols while utilizing conventional cable modem termination system equipment. The wireless carrier maintains a database of identifying data for content downloaded to subscribers’ mobile stations. When the array antenna pattern is to be formed in the mode of using all the antennas, a signal of one synthesizer is applied to transmissionreception circuits of all the antennas. In another embodiment, the data from the second array is used to stabilize an image captured by the first array. The device includes a sense amplifier to sense a voltage difference between a plurality of bit lines responsive to a develop voltage signal, and a voltage generator to generate the develop voltage signal responsive to a reference voltage signal and according to an electrical characteristic of at least one transistor associated with the sense amplifier.