Abstract: Systems and methods for modulation and demodulation using a micro-Doppler effect are described. In an embodiment, the method includes radiating, using a picosecond pulse generator with an antenna, a train of THz pulses that form a frequency comb, where the frequency comb is reflected from an object such that the frequency several tones in the frequency comb are shifted based on the speed of the object and demodulating the reflected frequency comb to recover a THz Doppler signature of the object.

Abstract: Systems and methods for modulation and demodulation using a micro-Doppler effect are described. In an embodiment, the method includes radiating, using a picosecond pulse generator with an antenna, a train of THz pulses that form a frequency comb, where the frequency comb is reflected from an object such that the frequency several tones in the frequency comb are shifted based on the speed of the object and demodulating the reflected frequency comb to recover a THz Doppler signature of the object.

Abstract: Systems and methods for modulation and demodulation using a micro-Doppler effect are described. In an embodiment, the method includes radiating, using a picosecond pulse generator with an antenna, a train of THz pulses that form a frequency comb, where the frequency comb is reflected from an object such that the frequency several tones in the frequency comb are shifted based on the speed of the object and demodulating the reflected frequency comb to recover a THz Doppler signature of the object.

Abstract: A radar system may comprise a trigger, driver, switching circuit, and antenna for generating an ultra-short impulse without utilizing an oscillator. A radar imaging system for imaging a formation or a cross section of a pipeline may include at least one radar sensor. The system may transmit a high-frequency, short impulse signal to a formation or pipeline and measure a reflected signal. A high speed impulse generator may allow the short impulse signals to be generated. This impulse generator may utilize a switching circuit and digital driver to provide the short impulse signals. The images provide useful information about complex permittivity of the formation, the geometry of the pipeline, deposition thickness of asphaltenes and wax, velocity of the fluid, as well as size, type, concentration of gas bubbles, water, or solid particles in the flow, or combinations thereof.

Abstract: A fully-programmable digital-to-impulse radiator with a programmable delay is discussed herein. The impulse radiator may be part of an array of impulse radiators. Each individual element of the array may be equipped with an integrated programmable delay that can shift the timing of a digital trigger. The digital trigger may be fed to an amplifier, switch, and impulse matching circuitry, whereas the data signal path may be provided from a separate path. An antenna coupled to the impulse matching circuitry may then radiate ultra-short impulses. The radiating array may provide the ability to control delay at each individual element, perform near-ideal spatial combing, and/or beam steering.

Abstract: A fully-programmable digital-to-impulse radiator with a programmable delay is discussed herein. The impulse radiator may be part of an array of impulse radiators. Each individual element of the array may be equipped with an integrated programmable delay that can shift the timing of a digital trigger. The digital trigger may be fed to an amplifier, switch, and impulse matching circuitry, whereas the data signal path may be provided from a separate path. An antenna coupled to the impulse matching circuitry may then radiate ultra-short impulses. The radiating array may provide the ability to control delay at each individual element, perform near-ideal spatial combing, and/or beam steering.

Abstract: A radar system may comprise a trigger, driver, switching circuit, and antenna for generating an ultra-short impulse without utilizing an oscillator. A radar imaging system for imaging a formation or a cross section of a pipeline may include at least one radar sensor. The system may transmit a high-frequency, short impulse signal to a formation or pipeline and measure a reflected signal. A high speed impulse generator may allow the short impulse signals to be generated. This impulse generator may utilize a switching circuit and digital driver to provide the short impulse signals. The images provide useful information about complex permittivity of the formation, the geometry of the pipeline, deposition thickness of asphaltenes and wax, velocity of the fluid, as well as size, type, concentration of gas bubbles, water, or solid particles in the flow, or combinations thereof.