Abstract: In an approach to a system for a differentially segmented aperture (DSA) antenna includes protrusions arranged in an array, and pixels formed in an array, each pixel formed between two adjacent protrusions; and one or more signal chains, each including: transmit circuitry comprising digital-to-analog circuitry to generate an analog signal at a selected operating frequency based on a transmit digital signal representing the first analog signal to be transmitted to a target; receive circuitry comprising analog-to-digital circuitry to receive a second analog signal at the plurality of pixels of the DSA antenna, and to generate a receive digital signal representing the second analog signal; and pixel combiner circuitry to receive the first analog signal and control the pixels of the array with the first analog signal, and to receive analog signals from the pixels of the array and combine the analog signals to form an array analog receive signal.

Abstract: A beam steering system includes a differential segmented array (DSA) antenna comprising a plurality of pyramid structures and elements arranged in an array comprising a first and second set of direction elements, where each element is defined between opposing faces of two adjacent pyramid structures and a position of each element is located at a distance from a common origin of the elements of the array; phase gradient determination circuitry to determine a first and second phase gradient for the direction elements, where the phase gradients are based on a first and a second angle of a target with respect to the DSA antenna, and an operating frequency of the DSA antenna; and phase shift determination circuitry to determine a first and second phase shift, for each of the elements, and to determine a resultant phase shift, for each element, by summing the respective first and second phase shifts.

Abstract: A broadband RF imaging device includes a broadband RF aperture array, at least one RF receiver, and a computer. The at least one RF receiver has short RF connections with the broadband RF aperture array, e.g. length 10 meters or less. The computer has a digital data connection to the at least one RF receiver. Each RF receiver is configured to receive broadband RF signal data over a sampling time interval from the broadband RF aperture array, and to digitize the broadband RF signal data to generate digitized broadband RF signal data, and to store the digitized broadband RF signal data locally at the RF receiver. The computer receives the digitized broadband RF signal data stored locally at the at least one RF receiver, and is programmed to reconstruct an RF image from the digitized broadband RF signal data received from the at least one RF receiver.

Abstract: A beam steering system includes a differentially segmented aperture antenna comprising a plurality of pyramid structures arranged in an array, and a plurality of elements formed in an array, each element being defined between two adjacent pyramid structures; phase conversion circuitry to determine a phase conversion for each element, the phase conversion for each element being based on an angle of a target with respect to the element, and an operating frequency of the DSA antenna; transmit phase shift circuitry to apply a phase difference for each element based on the phase conversion, the phase difference steering the signal to the target so that the signal interferes constructively; and receive phase shift circuitry to apply a phase difference for each element based on the phase conversion, causing the signal to interfere constructively for a signal of interest, and suppresses an unwanted signal by steering the signal into a null.

Abstract: A modular radio frequency (RF) device includes N base units, each including a differential segmented array (DSA) tile with a support board and a two-dimensional (2D) array of electrically conductive tapered projections disposed on the support board. Neighboring pairs of the electrically conductive tapered projections form RF pixels. The N DSA tiles are arranged to form an RF aperture. The N base units are programmed to switch the RF aperture between a first operating mode and a second operating mode. In the first operating mode, the N base units are operated as at least two independent subsets with each subset operating as an RF transmitter or receiver independently of the other subsets. In the second operating mode all N base units coherently combine as a single phased array RF transmitter or receiver.

Abstract: A broadband RF imaging device includes a broadband RF aperture array, at least one RF receiver, and a computer. The at least one RF receiver has short RF connections with the broadband RF aperture array, e.g. length 10 meters or less. The computer has a digital data connection to the at least one RF receiver. Each RF receiver is configured to receive broadband RF signal data over a sampling time interval from the broadband RF aperture array, and to digitize the broadband RF signal data to generate digitized broadband RF signal data, and to store the digitized broadband RF signal data locally at the RF receiver. The computer receives the digitized broadband RF signal data stored locally at the at least one RF receiver, and is programmed to reconstruct an RF image from the digitized broadband RF signal data received from the at least one RF receiver.

Abstract: A beam steering system includes a differentially segmented aperture antenna comprising a plurality of pyramid structures arranged in an array, and a plurality of elements formed in an array, each element being defined between two adjacent pyramid structures; phase conversion circuitry to determine a phase conversion for each element, the phase conversion for each element being based on an angle of a target with respect to the element, and an operating frequency of the DSA antenna; transmit phase shift circuitry to apply a phase difference for each element based on the phase conversion, the phase difference steering the signal to the target so that the signal interferes constructively; and receive phase shift circuitry to apply a phase difference for each element based on the phase conversion, causing the signal to interfere constructively for a signal of interest, and suppresses an unwanted signal by steering the signal into a null.

Abstract: A modular radio frequency (RF) device includes N base units, each including a differential segmented array (DSA) tile with a support board and a two-dimensional (2D) array of electrically conductive tapered projections disposed on the support board. Neighboring pairs of the electrically conductive tapered projections form RF pixels. The N DSA tiles are arranged to form an RF aperture. The N base units are programmed to switch the RF aperture between a first operating mode and a second operating mode. In the first operating mode, the N base units are operated as at least two independent subsets with each subset operating as an RF transmitter or receiver independently of the other subsets. In the second operating mode all N base units coherently combine as a single phased array RF transmitter or receiver.

Abstract: A broadband RF imaging device includes a broadband RF aperture array, at least one RF receiver, and a computer. The at least one RF receiver has short RF connections with the broadband RF aperture array, e.g. length 10 meters or less. The computer has a digital data connection to the at least one RF receiver. Each RF receiver is configured to receive broadband RF signal data over a sampling time interval from the broadband RF aperture array, and to digitize the broadband RF signal data to generate digitized broadband RF signal data, and to store the digitized broadband RF signal data locally at the RF receiver. The computer receives the digitized broadband RF signal data stored locally at the at least one RF receiver, and is programmed to reconstruct an RF image from the digitized broadband RF signal data received from the at least one RF receiver.

Abstract: A beam steering system includes a differentially segmented aperture antenna comprising a plurality of pyramid structures arranged in an array, and a plurality of elements formed in an array, each element being defined between two adjacent pyramid structures; phase conversion circuitry to determine a phase conversion for each element, the phase conversion for each element being based on an angle of a target with respect to the element, and an operating frequency of the DSA antenna; transmit phase shift circuitry to apply a phase difference for each element based on the phase conversion, the phase difference steering the signal to the target so that the signal interferes constructively; and receive phase shift circuitry to apply a phase difference for each element based on the phase conversion, causing the signal to interfere constructively for a signal of interest, and suppresses an unwanted signal by steering the signal into a null.

Abstract: A modular radio frequency (RF) device includes N base units, each including a differential segmented array (DSA) tile with a support board and a two-dimensional (2D) array of electrically conductive tapered projections disposed on the support board. Neighboring pairs of the electrically conductive tapered projections form RF pixels. The N DSA tiles are arranged to form an RF aperture. The N base units are programmed to switch the RF aperture between a first operating mode and a second operating mode. In the first operating mode, the N base units are operated as at least two independent subsets with each subset operating as an RF transmitter or receiver independently of the other subsets. In the second operating mode all N base units coherently combine as a single phased array RF transmitter or receiver.

Abstract: A broadband RF imaging device includes a broadband RF aperture array, at least one RF receiver, and a computer. The at least one RF receiver has short RF connections with the broadband RF aperture array, e.g. length 10 meters or less. The computer has a digital data connection to the at least one RF receiver. Each RF receiver is configured to receive broadband RF signal data over a sampling time interval from the broadband RF aperture array, and to digitize the broadband RF signal data to generate digitized broadband RF signal data, and to store the digitized broadband RF signal data locally at the RF receiver. The computer receives the digitized broadband RF signal data stored locally at the at least one RF receiver, and is programmed to reconstruct an RF image from the digitized broadband RF signal data received from the at least one RF receiver.

Abstract: A modular radio frequency (RF) device includes N base units, each including a differential segmented array (DSA) tile with a support board and a two-dimensional (2D) array of electrically conductive tapered projections disposed on the support board. Neighboring pairs of the electrically conductive tapered projections form RF pixels. The N DSA tiles are arranged to form an RF aperture. The N base units are programmed to switch the RF aperture between a first operating mode and a second operating mode. In the first operating mode, the N base units are operated as at least two independent subsets with each subset operating as an RF transmitter or receiver independently of the other subsets. In the second operating mode all N base units coherently combine as a single phased array RF transmitter or receiver.

Abstract: An air interface plane (AIP) of a radio frequency (RF) aperture includes: a circuit board having a first side and a second side opposite the first side; and a matrix of tapered elements arranged on the first side of the circuit board and secured to the circuit board, the matrix of tapered elements cooperating to at least one of receive or transmit an over-the-air RF signal. Suitably, each tapered element of the matrix has: a central hub extending along a longitudinal axis from a hub base which is proximate to the first side of the circuit board to an apex of the tapered element which is distal from the first side of the first circuit board; and a plurality of arms extending from the central hub at the apex of the tapered element, each of the plurality of arms including a first portion that projects the arm radially away from the longitudinal axis and a second portion that projects the arm longitudinally toward the first side of the circuit board.

Abstract: A broadband RF imaging device includes a broadband RF aperture array, at least one RF receiver, and a computer. The at least one RF receiver has short RF connections with the broadband RF aperture array, e.g. length 10 meters or less. The computer has a digital data connection to the at least one RF receiver. Each RF receiver is configured to receive broadband RF signal data over a sampling time interval from the broadband RF aperture array, and to digitize the broadband RF signal data to generate digitized broadband RF signal data, and to store the digitized broadband RF signal data locally at the RF receiver. The computer receives the digitized broadband RF signal data stored locally at the at least one RF receiver, and is programmed to reconstruct an RF image from the digitized broadband RF signal data received from the at least one RF receiver.

Abstract: A modular radio frequency (RF) device includes N base units, each including a differential segmented array (DSA) tile with a support board and a two-dimensional (2D) array of electrically conductive tapered projections disposed on the support board. Neighboring pairs of the electrically conductive tapered projections form RF pixels. The N DSA tiles are arranged to form an RF aperture. The N base units are programmed to switch the RF aperture between a first operating mode and a second operating mode. In the first operating mode, the N base units are operated as at least two independent subsets with each subset operating as an RF transmitter or receiver independently of the other subsets. In the second operating mode all N base units coherently combine as a single phased array RF transmitter or receiver.

Abstract: A modular radio frequency (RF) device includes N base units, each including a differential segmented array (DSA) tile with a support board and a two-dimensional (2D) array of electrically conductive tapered projections disposed on the support board. Neighboring pairs of the electrically conductive tapered projections form RF pixels. The N DSA tiles are arranged to form an RF aperture. The N base units are programmed to switch the RF aperture between a first operating mode and a second operating mode. In the first operating mode, the N base units are operated as at least two independent subsets with each subset operating as an RF transmitter or receiver independently of the other subsets. In the second operating mode all N base units coherently combine as a single phased array RF transmitter or receiver.

Abstract: A modular radio frequency (RF) device includes N base units, each including a differential segmented array (DSA) tile with a support board and a two-dimensional (2D) array of electrically conductive tapered projections disposed on the support board. Neighboring pairs of the electrically conductive tapered projections form RF pixels. The N DSA tiles are arranged to form an RF aperture. The N base units are programmed to switch the RF aperture between a first operating mode and a second operating mode. In the first operating mode, the N base units are operated as at least two independent subsets with each subset operating as an RF transmitter or receiver independently of the other subsets. In the second operating mode all N base units coherently combine as a single phased array RF transmitter or receiver.

Abstract: A handheld countermeasure device is disclosed herein. The device can include a hand-held form factor body. The device can include disruption components, a directional antenna, and a processor. The disruption components can be configured to generate a disruptive signal. The directional antenna can be configured to emit the disruptive signal. The processor can be configured to determine a position of the handheld countermeasure device based on a global navigation satellite system (GNSS) signal. The processor can be configured to load a device profile for the handheld countermeasure device based on the position of the handheld countermeasure device.

Abstract: In an approach to a system for a differentially segmented aperture (DSA) antenna includes protrusions arranged in an array, and pixels formed in an array, each pixel formed between two adjacent protrusions; and one or more signal chains, each including: transmit circuitry comprising digital-to-analog circuitry to generate an analog signal at a selected operating frequency based on a transmit digital signal representing the first analog signal to be transmitted to a target; receive circuitry comprising analog-to-digital circuitry to receive a second analog signal at the plurality of pixels of the DSA antenna, and to generate a receive digital signal representing the second analog signal; and pixel combiner circuitry to receive the first analog signal and control the pixels of the array with the first analog signal, and to receive analog signals from the pixels of the array and combine the analog signals to form an array analog receive signal.