Abstract: Techniques, systems, and devices are disclosed for ultrasound diagnostics using spread spectrum, coherent, frequency- and/or phase-coded waveforms.

Abstract: Techniques, systems, and devices are disclosed for ultrasound diagnostics using spread spectrum, coherent, frequency- and/or phase-coded waveforms.

Abstract: Techniques, systems, and devices are disclosed for synthetic aperture ultrasound imaging using spread-spectrum, wide instantaneous band, coherent, coded waveforms.

Abstract: Techniques, systems, and devices are disclosed for synthetic aperture ultrasound imaging using spread-spectrum, wide instantaneous band, coherent, coded waveforms.

Abstract: Techniques, systems, and devices are disclosed for ultrasound diagnostics using spread spectrum, coherent, frequency- and/or phase-coded waveforms.

Abstract: Techniques, systems, and devices are disclosed for ultrasound diagnostics using spread spectrum, coherent, frequency- and/or phase-coded waveforms.

Abstract: Techniques, systems, and devices are disclosed for ultrasound diagnostics using spread spectrum, coherent, frequency- and/or phase-coded waveforms.

Abstract: Techniques, systems, and devices are disclosed for synthetic aperture ultrasound imaging using spread-spectrum, wide instantaneous band, coherent, coded waveforms.

Abstract: Techniques, systems, and devices are disclosed for ultrasound imaging using spread spectrum, coherent, frequency- and/or phase-coded waveforms. In one aspect, a method of creating an image from an acoustic waveform in an acoustic imaging device includes setting the device into a transmit mode to transmit an acoustic waveform toward a target, in transmitting the acoustic waveform, synthesizing, in one or more waveform synthesizers, a plurality of substantially orthogonal coded waveforms that form a composite waveform as the transmitted acoustic waveform toward the target, in which each waveform corresponds to a distinct frequency band, setting the device into a receive mode to receive a returned acoustic waveform that returns from at least part of the target, converting the received returned acoustic waveform from analog format to digital format as a received composite waveform comprising information of the target, and processing the received composite waveform to produce an image of the target.

Abstract: A wireless communication network which includes an antenna array for receiving and transmitting signals to and from remote users which is capable of adapting to widely varying traffic levels. Different antenna elements can be turned on during high user periods and off when there are fewer users. Also, beam width can be varied, with fewer antennas having wide beams in use when traffic levels are low and more antennas with narrow beams when traffic is high. Generally, the maximum capability uses 180 antenna elements with beam widths of about 2° to cover a full 360°. This network can act as either a circuit switched network or a packet switched network, as desired.