Abstract: An apparatus comprises a coherent radar system on a single chip that operates in a range of operation in a terahertz range, where the range of operation is between approximately 0.1 THz and 1 THz.

Abstract: A communication network includes nodes configured into a wireless ring network operating at one or more millimeter-wave frequencies. At least one of the nodes is configured to send and receive millimeter-wave wireless signals through an obstruction. In accordance with an exemplary embodiment of the network, one or more of the nodes may include small, phased-array antennas and transceivers, configured with radio electronics to mitigate the path loss through certain obstructions, such as walls, floors, ceilings, and other barriers within buildings, as well as attenuation from free-space path-loss, including moisture in air (humidity). The network may include multiple pairs of nodes to form one or more wireless communication paths through various obstructions. This may allow a high-speed, wireless, multi-ring network to be established, for example, within a structure, such as a building, without requiring additional cabling or wiring.

Abstract: A system comprises a personal device such as one used by law enforcement, and a housing containing a portable radar system with both a ranging resolution and lateral resolution sufficient to detect an object concealed on a person (e.g., one that operates in the THz range), where the housing is configured to be mounted in contact with the personal device such that when mounted, the combined handheld device and housing have a form factor that allows it to retain its characteristic as a personal device, and where the portable radar system is configured to, when in operation, emit a radar beam and to receive a reflection of the emitted radar beam.

Abstract: A system for scanning targets for concealed objects comprises a set of analog imaging components of a portable radar system with both a ranging resolution and lateral resolution sufficient to detect an object concealed on a person, where the analog imaging components are contained with a first housing and in communication with digital processing components contained in a second housing, where the digital processing components are configured to receive imaging information from the analog components for processing. Each housing is configured to be attached to a user's article of equipment.

Abstract: A method comprises performing, by a first coherent radar system on a chip configured to operate in a terahertz range between 0.1 THz and 1 THZ, a first radar scan of a target, the first coherent radar system being in physical contact with a first non-physical scanning device. The first non-physical scanning device then receives first scanning data from the first radar scan, and sends a coordination signal to a second non-physical scanning device. A second coherent radar system on a chip configured to operate in the terahertz range performs a second radar scan of the target, the second coherent radar system being in physical contact with the second non-physical scanning device. The second non-physical device receives second scanning data from the second radar scan, and the first and second scanning data are sent to a processor for a determination as to whether an impermissible object has been detected.

Abstract: An apparatus comprises a first and second coherent radar system on a first chip configured to operate in a terahertz range to provide a frequency modulated continuous wave, and having a first and second field of view, respectively. The apparatus further comprises a first processor in communication with the first coherent radar system and configured to include instructions to send a first signal to the first coherent radar system to scan a target with the first field of view, and a second processor in communication with the second coherent radar system and configured to collaborate with the first processor, and further configured to include instructions to send a second signal to the second coherent radar system to scan a target within the second field of view.

Abstract: An apparatus comprises an aerial drone with a coherent radar system on a chip that operates in the terahertz range, the chip being in physical contact with the drone and configured to conduct a noninvasive scan of a target in a line of site field of view of the drone.

Abstract: A method comprises scanning a subject with a coherent radar beam from a single chip operating in the terahertz range, and executing instructions, on a processor, to create one or more digital images based said scanning. One or more digital images are combined at the processor to form a super image, and based on the super image, the processor determines whether the subject is carrying a concealed object. if the subject is determined to be carrying a concealed object, and certain alert-generating rules are met, an alert is generated.

Abstract: A wireless network includes at least a pair of nodes that are configured to communicate with each other by transmitting and receiving one or more millimeter-wave beams through an obstruction and through unobstructed air. In accordance with an exemplary embodiment of the network, the nodes include small, phased-array antennas and transceivers, configured with radio electronics to mitigate the path loss through certain obstructions, such as walls, floors, barriers within buildings, and the attenuation from free-space path-loss, including moisture in air (humidity). The network may include multiple pairs of nodes to form one or more wireless communication paths through various obstructions. This may allow a high-speed wireless network to be established within a structure, such as a building, without requiring additional cabling or wiring.

Abstract: Apparatuses, systems, and methods for wireless millimeter-wave communications are disclosed. An apparatus is configured to rotate about an axis so as to improve transfer of wireless signals. The apparatus includes a support having a first side and a second side. A first phased array antenna is mounted to the support facing away from the first side. A second phased array antenna mounted to the support facing away from the second side. The apparatus further includes a means for rotating the support, such as a hinge or a pivot. By rotating the support in the field, the coverage of the wireless signals to/from at least one of the phased array antennas may be improved.

Abstract: Apparatuses, systems, and methods that allow millimeter-wave communication signals to pass efficiently and reliably through obstructions are disclosed. An apparatus includes a first wireless transceiver and a first phased array antenna coupled to the first wireless transceiver. A second phased array antenna is also coupled to the first wireless transceiver. The apparatus additionally includes a second wireless transceiver and a third phased array antenna coupled to the second wireless transceiver. The third phased array antenna is adapted to emit a third millimeter wave beam through an obstruction. A fourth phased array antenna is also coupled to the second wireless transceiver. The fourth phased array antenna is adapted to receive a fourth millimeter wave beam through the obstruction. A controller is included in the apparatus for managing data transfer between the first wireless transceiver and the second wireless transceiver so that a fully duplexed communication path is available between the antennas.

Abstract: A wireless network includes at least a pair of nodes that are configured to communicate with each other by transmitting and receiving one or more millimeter-wave beams through an obstruction and through unobstructed air. In accordance with an exemplary embodiment of the network, the nodes include small, phased-array antennas and transceivers, configured with radio electronics to mitigate the path loss through certain obstructions, such as walls, floors, barriers within buildings, and the attenuation from free-space path-loss, including moisture in air (humidity). The network may include multiple pairs of nodes to form one or more wireless communication paths through various obstructions. This may allow a high-speed wireless network to be established within a structure, such as a building, without requiring additional cabling or wiring.

Abstract: A communication network includes nodes configured into a wireless ring network operating at one or more millimeter-wave frequencies. At least one of the nodes is configured to send and receive millimeter-wave wireless signals through an obstruction. In accordance with an exemplary embodiment of the network, one or more of the nodes may include small, phased-array antennas and transceivers, configured with radio electronics to mitigate the path loss through certain obstructions, such as walls, floors, ceilings, and other barriers within buildings, as well as attenuation from free-space path-loss, including moisture in air (humidity). The network may include multiple pairs of nodes to form one or more wireless communication paths through various obstructions. This may allow a high-speed, wireless, multi-ring network to be established, for example, within a structure, such as a building, without requiring additional cabling or wiring.

Abstract: Apparatuses, systems, and methods for wireless millimeter-wave communications are disclosed. An apparatus is configured to rotate about an axis so as to improve transfer of wireless signals. The apparatus includes a support having a first side and a second side. A first phased array antenna is mounted to the support facing away from the first side. A second phased array antenna mounted to the support facing away from the second side. The apparatus further includes a means for rotating the support, such as a hinge or a pivot. By rotating the support in the field, the coverage of the wireless signals to/from at least one of the phased array antennas may be improved.

Abstract: Apparatuses, systems, and methods that allow millimeter-wave communication signals to pass efficiently and reliably through obstructions are disclosed. An apparatus includes a first wireless transceiver and a first phased array antenna coupled to the first wireless transceiver. A second phased array antenna is also coupled to the first wireless transceiver. The apparatus additionally includes a second wireless transceiver and a third phased array antenna coupled to the second wireless transceiver. The third phased array antenna is adapted to emit a third millimeter wave beam through an obstruction. A fourth phased array antenna is also coupled to the second wireless transceiver. The fourth phased array antenna is adapted to receive a fourth millimeter wave beam through the obstruction. A controller is included in the apparatus for managing data transfer between the first wireless transceiver and the second wireless transceiver so that a fully duplexed communication path is available between the antennas.

Abstract: A high speed bidirectional cable transmission system for CATV and other television systems includes unidirectional transmission of video signals from a head end unit to a plurality of transceivers or subscribers connected to a transmission line. The head end unit encodes voice data using QPSK encoding and time division multiplexing of the encoded data in a plurality of frequency bands to the subscribers. Each subscriber attached to the cable for receiving continuous transmission of voice and video data is assigned an identification number and at least one voice channel for selectively accessing data. Each subscriber includes a transmitter for transmitting voice data on the cable to the head end unit using time division multiple access transmission of bursts of data in a plurality of frequency bands.

Abstract: A modulator for data transmitted in a reverse channel or upstream spectrum in a cable transmission system requires a single frequency translation from baseband to a selected RF channel, thus eliminating conventional intermediate frequency (IF) translation. The modulator requires fewer components than the conventional modulator while eliminating nonlinearity, noise, and delay introduced by the IF upconversion. In a preferred embodiment, the modulator includes a serial to parallel differential quadrature phase shift keying encoder with transversal FIR filters and interpolation filters connecting the phase shift keyed data to a single mixer stage for directly translating the baseband signal to an RF (e.g., 5-40 MHz) channel spectrum.

Abstract: A portable cellular telephone system including a stationary transceiver for radio communication with a plurality of mobile transceivers within a geographic cell, a mobile transceiver within said geographic cell and having sufficient power to communicate with said stationary transceiver, and a portable transceiver of limited size for personal transport and use. The portable transceiver communicates with the mobile transceiver by spread spectrum techniques, and the mobile transceiver communicates with the stationary transceiver by frequency modulated radio transmission or by digital radio transmission.

Abstract: In a Viterbi decoder including an add-compare-select (ACS) processor, speed is enhanced without loss of performance by maintaining a dynamic cumulative metric range for computed state metrics. Current state metrics are added to new branch metrics to obtain two computed metrics, and the smaller of the two computed metrics is stored along with previously computed state metrics. The stored state metrics are compared with a selected scale factor, for example one-half maximum scale factor, and all current state metrics are rescaled when the minimum stored metric value exceeds the selected scale factor.

Abstract: A numerically controlled oscillator includes a phase accumulator which generates sequences of phase word phase signals. A demultiplexer 104 directs the odd and even numbered phase angle words of the sequence to identical but independent lookup tables to generate corresponding waveform signals. The wave form signals at the output of each lookup table occur at one-half the frequency of the system clock. A multiplexer 108 interleaves the output signals from the lookup tables to provide a properly ordered sequence of waveform signals at the frequency of the system clock. The maximum system clock frequency can be approximately twice the maximum operating frequency of each lookup table.