Abstract: A portable antenna for wireless communication, the portable antenna comprising: an electromagnetically reflective material; a first mechanical structure supporting preferred shape of the electromagnetically reflective material when in deployed position; a second mechanical structure attached to at least one point on the preferred shape and adjustable to hold a mobile wireless communication device at a preferred position relative to the preferred shape, is claimed. Additionally disclosed is a system comprising the portable antenna wherein the second mechanical structure is adapted to hold a feed instead of a mobile device and a cover for a mobile wireless communication device, comprising a signal coupling mechanism, and a signal routing means, and wherein the a signal routing means is coupled to the feed.

Abstract: A portable antenna for wireless communication, the portable antenna comprising: an electromagnetically reflective material; a first mechanical structure supporting preferred shape of the electromagnetically reflective material when in deployed position; a second mechanical structure attached to at least one point on the preferred shape and adjustable to hold a mobile wireless communication device at a preferred position relative to the preferred shape, is claimed. Additionally disclosed is a system comprising the portable antenna wherein the second mechanical structure is adapted to hold a feed instead of a mobile device and a cover for a mobile wireless communication device, comprising a signal coupling mechanism, and a signal routing means, and wherein the a signal routing means is coupled to the feed.

Abstract: A system for and method of compensating for performance differences in a set of information channels is disclosed. The system and method model each channel as linear and characterizes the channel by an offset and a gain. The system includes memory for storing the offsets and gains associated with the N channels. The system further includes means for mathematically adjusting the output of each information channel by that channel's associated offset and gain. The system further includes filters for reducing the effect of random noise on the measurements of the offsets and gains by generating signals representative of time weighted averages of the offsets and gains.

Abstract: The invention is an autozero compensator for use in processing low level signals, the compensator comprising an input integrating operational amplifier providing at its output in one mode an error signal responsively to offset voltage across the differential input terminals of the amplifier. A second amplifier is provided in a feedback loop for generating from the error signal a charge at a compensating voltage equal and opposite to the offset voltage. That charge is capacitively stored and applied to the input amplifier to cancel the offset voltage.

Abstract: The invention is an autozeroing circuit for use in processing low level electrical charge signals by an integrating operational amplifier. The autozeroing circuit includes a switching circuit that periodically charges and discharges the integrating capacitor of the amplifier during set and reset phases of an operation cycle so that during the set phase of the cycle the input signal is integrated and processed by processing circuitry including an A/D converter, and during the reset phase the integrator is cleared.