Abstract: A device for generating a radio frequency (RF) beam includes an array of independent unit cells. Each unit cell includes RF sources configured to generate terahertz (THz) signals, and antennas coupled to the RF sources for transmitting THz waves based on the THz signals. The device further includes switches configured to selectively bias each unit cell between an activated state in which the antennas of the unit cell are operable to transmit the THz waves, and a deactivated state in which the antennas of the unit cell are prevented from transmitting the THz waves. The device further includes circuitry configured to control the switches to generate the RF beam based on the THz waves transmitted by the antennas of each unit cell in the activated state.

Abstract: Apparatus, systems, and methods for a transmitter array for enhanced communication systems may be provided. According to an aspect a transmitter array may be provided. The transmitter array may include a plurality of equivalent transmitter units. Each equivalent transmitter unit may include an antenna and a QPSK modulator. Each equivalent transmitter unit may be selectively activatable. In some embodiments, upon activation of a set of equivalent transmitter units selected from the plurality of equivalent transmitter units, a desired modulated output signal is generated. According to another aspect, a method of generating a desired modulated output signal may be provided. The method may include receiving a plurality of local oscillator (LO) signals at a transmitter array. The method may further include selectively activating a set of equivalent transmitter units of the plurality of equivalent transmitter units to generate the desired modulated output signal.

Abstract: The present disclosure provides modules, arrays and methods for interferometric transmitters for dual-band and dual-polarization signal modulation where the module has a plurality of oscillators for generating a plurality of carrier signals of a plurality of frequency bands, and a multiport network connected to the plurality of oscillators. The multiport network having a plurality of inputs each for receiving one of the plurality of carrier signals, a plurality of outputs, and a plurality of reflection paths between the plurality of inputs and the plurality of outputs. Each of the plurality of reflection paths has a variable reflection coefficient for modulating the plurality of carrier signals to output a plurality of modulated radio-frequency (RF) signals of the plurality of frequency bands via the plurality of outputs.

Abstract: The present disclosure provides modules, arrays and methods for interferometric receivers for dual-band and dual-polarization signal modulation where the module comprises a plurality of oscillators for generating a plurality of carrier signals of a plurality of frequency bands, and a multiport circuit connected to the plurality of oscillators. The multiport circuit having a plurality of inputs each for receiving one of the plurality of carrier signals, a plurality of outputs, a plurality of quadrature hybrid couplers, power dividers, and power detectors.

Abstract: Apparatus, systems, and methods for a transmitter array for enhanced communication systems may be provided. According to an aspect a transmitter array may be provided. The transmitter array may include a plurality of equivalent transmitter units. Each equivalent transmitter unit may include an antenna and a QPSK modulator. Each equivalent transmitter unit may be selectively activatable. In some embodiments, upon activation of a set of equivalent transmitter units selected from the plurality of equivalent transmitter units, a desired modulated output signal is generated. According to another aspect, a method of generating a desired modulated output signal may be provided. The method may include receiving a plurality of local oscillator (LO) signals at a transmitter array. The method may further include selectively activating a set of equivalent transmitter units of the plurality of equivalent transmitter units to generate the desired modulated output signal.

Abstract: Methods and apparatus for wireless communication using a matrix of reconfigurable cells is provided. Each cell has an antenna or antenna port and is reconfigurable to operate as a transmitter, receiver, angle-of-arrival detector or power harvester. Cells can be allocated to different tasks as needed. A reference frequency signal is distributed to each cell, with an in-phase version of the signal being delivered to a first subset of cells, and a quadrature version of the signal being delivered to a second subset of cells. The first and second subsets may be interleaved for example in a checkerboard pattern. Cells cooperate in pairs for transmission or reception of quadrature amplitude modulated signals. Groups of four cells may cooperate for angle of arrival detection. The cells may be configured as interferometric transmitter/receiver cells using 90 degree hybrid couplers and power detectors.

Abstract: Methods and apparatus for wireless communication using a matrix of reconfigurable cells is provided. Each cell has an antenna or antenna port and is reconfigurable to operate as a transmitter, receiver, angle-of-arrival detector or power harvester. Cells can be allocated to different tasks as needed. A reference frequency signal is distributed to each cell, with an in-phase version of the signal being delivered to a first subset of cells, and a quadrature version of the signal being delivered to a second subset of cells. The first and second subsets may be interleaved for example in a checkerboard pattern. Cells cooperate in pairs for transmission or reception of quadrature amplitude modulated signals. Groups of four cells may cooperate for angle of arrival detection. The cells may be configured as interferometric transmitter/receiver cells using 90 degree hybrid couplers and power detectors.

Abstract: An interferometric receiver includes first and second antennas, each antenna being for receiving modulated microwave and terahertz signals; a first power detector for receiving a reference microwave signal and the modulated microwave signal received at the first antenna, a second power detector for receiving a phase-shifted reference microwave signal and the modulated microwave signal received at the second antenna, a third power detector for receiving a reference terahertz signal and the modulated terahertz signal received at the second antenna, and a fourth power detector for receiving a phase-shifted reference terahertz signal and the modulated terahertz signal received at the first antenna, each power detector being configured to down-convert the modulated microwave or terahertz signal received at the power detector; and circuitry configured to determine a quadrature component and an in-phase component of each of the down-converted microwave signal and the modulated terahertz signal.

Abstract: A module for modulation and demodulation using two substantially identical self-oscillating mixers (SOMs) injection-locked at a coupling frequency, providing a simple compact, low power, highly efficient receiver, transmitter or transceiver. The module suitable for quadrature amplitude-modulation where the coupling frequency is the second harmonic frequency of the SOMs and the SOMs oscillate 180 degrees out of phase relative to one another. Use of carrier frequencies at a fundamental harmonic frequency or odd multiples thereof provide high isolation between the SOMs at the carrier frequency. A method for modulation and demodulation includes injection-locking the two SOMs at a coupling frequency.

Abstract: A device includes one or more controllers and multiple spatially distributed receivers. Each receiver is controllable by the one or more controllers between an activated state in which the receiver is operable to detect an incoming signal, and a deactivated state in which the receiver is not operable to detect the incoming signal. At least a first receiver and a second receiver of the receivers, each in the activated state, are configured to demodulate the incoming signal by: demodulating with the first receiver an in-phase component of the incoming signal; and demodulating with the second receiver a quadrature component of the incoming signal.

Abstract: A device for generating a radio frequency (RF) beam includes an array of independent unit cells. Each unit cell includes RF sources configured to generate terahertz (THz) signals, and antennas coupled to the RF sources for transmitting THz waves based on the THz signals. The device further includes switches configured to selectively bias each unit cell between an activated state in which the antennas of the unit cell are operable to transmit the THz waves, and a deactivated state in which the antennas of the unit cell are prevented from transmitting the THz waves. The device further includes circuitry configured to control the switches to generate the RF beam based on the THz waves transmitted by the antennas of each unit cell in the activated state.