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Brett A. Williams

Brett A. Williams, Iowa City, IA US

Patent application numberDescriptionPublished
20090051582MINIATURIZED MICROWAVE-PHOTONIC RECEIVER - A receiver, such as a miniaturized microwave-photonic coherent receiver (MMPR) is disclosed. The receiver includes an antenna to output an electrical RF signal received on a section of the antenna, a laser to produce an optical signal, a photonic modulator to receive the optical signal and the electrical RF signal and produce an EO-RF signal and to receive the optical signal and an electrical LO signal and produce an EO-LO signal, a signal combiner to provide a combined EO-RF and EO-LO signal and a photodiode to receive the combined signal and produce an IF signal. A method of detecting an object using the MMPR includes receiving an electrical RF signal corresponding to the object, outputting the electrical RF signal to a photonic modulator, modulating the electrical RF signal onto an optical carrier, demodulating the electrical RF signal to produce an IF signal and processing the IF signal.02-26-2009
20090220194PLASMONIC ANTENNA FEED AND COUPLING METHOD AND DEVICE - A plasmonic antenna feed and coupling device is disclosed that can include an antenna and a waveguide operatively coupled to the antenna. Surface plasmon polaritons generated on a surface of the antenna can be guided in a plasmonic state from the antenna through the waveguide. A method of plasmonic field guidance can include generating surface plasmon polaritons on a surface of an antenna, guiding the surface plasmon polaritons in a plasmonic state from the antenna to a waveguide and coupling the surface plasmon polaritons in a plasmonic state to a port.09-03-2009
20100182676VARIABLE- BEAMWIDTH ANGLE ENCODING LASER SCANNER - A laser apparatus includes a laser capable of generating a laser signal; means for conditioning the laser signal; and means for varying the beamwidth of the laser signal as it is scanned into the field of view.07-22-2010
20110064415RADIO FREQUENCY PHOTONIC TRANSCEIVER - In a first aspect, the invention includes a radio frequency photonic transceiver, comprising: a radio frequency receiver; a radio frequency photonic transmitter; and a switch between the input of the radio frequency photonic receiver and the output of the radio frequency photonic transmitter. In a second aspect, the invention includes an apparatus, comprising: a radio frequency photonic receiver; a radio frequency photonic transmitter; and a switch between the input of the radio frequency photonic receiver and the output of the radio frequency photonic transmitter. In a third aspect, the invention includes a radio frequency, photonic transceiver, comprising: means for generating a radio frequency modulated optical signal; a radio frequency photonic transmitter; and means for switching between the input of the radio frequency photonic receiver and the output of the radio frequency photonic transmitter. In a fourth aspect, the invention includes a method, comprising: generating a first optical signal; electro-optically generating a first radio frequency signal from the first optical signal; transmitting the first radio frequency signal; receiving a second radio frequency signal; and electro-optically modulating a second optical signal with the frequency of the second radio frequency signal. In a fifth aspect, the invention includes a zero-intermediate frequency radio frequency photonic transmitter-receiver unit. In a sixth aspect, the invention includes a radio frequency photonic transmitter-receiver unit including a direct conversion receiver with receiver output.03-17-2011
20110102245SUBWAVELENGTH APERTURE MONOPULSE CONFORMAL ANTENNA - In various aspects and embodiments, incident electromagnetic radiation is received through a subwavelength aperture in a lens, the subwavelength aperture being defined by a substrate encased in a dielectric medium.05-05-2011

Patent applications by Brett A. Williams, Iowa City, IA US

Brett A. Williams, Arlington, TX US

Patent application numberDescriptionPublished
20100221015METHOD AND SYSTEM FOR SIGNAL PROCESSING BY MODULATION OF AN OPTICAL SIGNAL WITH A MULTICHANNEL RADIO FREQUENCY SIGNAL - A signal processing system is disclosed having a detector for detecting an RF signal, wherein the detector has plural detection channels. A modulator modulates an optical signal with the detected RF signal and a processor processes the modulated optical signal to determine an azimuth or an elevation of the detected RF signal.09-02-2010

Patent applications by Brett A. Williams, Arlington, TX US

Brett A. Williams, Lino Lakes, MN US

Patent application numberDescriptionPublished
20090326538DEVICES AND METHODS FOR FRACTURE REDUCTION - The invention relates to a method of creating a curvilinear cavity within a vertebral body or other bony structure. The invention also relates to devices that may be used to perform the steps to create the curvilinear cavity. In one embodiment, a method of forming a curvilinear void in bony structure may include the steps of accessing a bony structure with a cannula, inserting a distal end of a drill device through the cannula and into the bony structure, manipulating the distal end of the drill device to create a curvilinear void in the bony structure, enlarging the void by expansion of a balloon element mounted to the drill device, and deflating the balloon element and removing the drill device from the cannula.12-31-2009