10results about "Electromagnetic wave modulation" patented technology

The present disclosure relates to atomic quantum and photonic apparatuses and methods, for example, atomic radio apparatuses and methods. The disclosure describes various aspects of atomic radio. More specifically, the disclosure describes an atomic radio apparatus and associated hardware. Methods for performing radio communications, sensing, and imaging, are described. The disclosure further describes laser, optical, photonics, atom-photonics, and hybrid micro-integrated subsystems for Rydberg excitation, spectroscopy, and quantum technology.

An electromagnetic wave transmission apparatus of the present invention includes a transmission unit whose voltage-current characteristics have a local maximum value and a local minimum value located on a higher voltage side than the local maximum value and which transmits an electromagnetic wave indicating a modulation signal, an acquisition unit which acquires a digital signal, and a modulation unit which modulates the digital signal into the modulation signal which is a signal using voltage values of three levels or more in an oscillation region which is a voltage region that is equal to or more than a voltage of the local maximum voltage and equal to or less than a voltage of the local minimum voltage. The transmission unit preferably transmits a synchronization signal as at least a part of the modulation signal. In this case, the synchronization signal preferably includes a maximum value and a minimum value among the voltage values of three levels or more, and includes a pattern in which the voltage value transitions from one of the maximum value and the minimum value to the other.

A modulator including an amplitude modulating component for modulating an amplitude of an electromagnetic signal is provided. The amplitude modulating component comprises a first conductor for tunnell

An electronic device is provided. The electronic device includes a substrate and a plurality of modulation units. The plurality of modulation units are disposed on the substrate. Each of the modulation units includes a first electronic element and a second electronic element, a first signal line, a second signal line, and a third signal line. The first signal line provides a first voltage to the first electronic element. The second signal line provides a second voltage to the second electronic element. The third signal line provides a third voltage to the first electronic element and / or the second electronic element. The first voltage is different from the second voltage, and the third voltage is different from the first voltage and / or the second voltage. The electronic device of the embodiments of the present disclosure has modulation units capable of modulating the phase, bandwidth, intensity, or polarization state of electromagnetic waves.

This invention proposes an LFM signal based on random inter-pulse frequency and intra-pulse phase coding modulation, relating to the field of electromagnetic wave waveform modulation technology. This signal inherits the high resolution of LFM signals, has lower range-Doppler (RD) sidelobes, and eliminates the RD coupling effect, so that the false targets generated by ISRJ only produce a sparse deception effect without spreading or drifting on the RD plane. This invention further designs a corresponding signal processing method, which achieves anti-intermittent sampling and forwarding interference by transmitting the modulated signal RIF-PCLFM, improving waveform detection capability and interference suppression performance, and enhancing interference processing efficiency.

A system and a method for communicating through a plasma sheath formed on a vehicle, include a matching layer disposed on at least a portion of a communication device of the vehicle. The matching layer is configured to generate a resonant frequency in relation to the plasma sheath. A modulator is configured to generate one or more electromagnetic waves that modulate the resonant frequency.

To provide an electromagnetic wave transmitting device and an electromagnetic wave communication system that increase the transmission speed. [Solution] In the electromagnetic wave communication system 10, the electromagnetic wave transmitting device 20 includes a transmitting unit 28 that transmits an electromagnetic wave W indicating a modulated signal, which has a maximum value and a minimum value located on the voltage side higher than the maximum value in its voltage-current characteristics; an acquisition unit 22 that acquires a digital signal; and a modulation unit (conversion unit 24) that modulates the digital signal to the modulated signal using three or more voltage values ​​within an oscillation region which is a voltage region above the maximum value and below the minimum value. The transmitting unit 28 preferably transmits a synchronization signal as at least a part of the modulated signal. In this case, the synchronization signal preferably includes the maximum and minimum values ​​among the three or more voltage values, and includes a pattern that transitions from one of the maximum and minimum values ​​to the other.

An electromagnetic modulation device may include a receiver configured to receive electromagnetic signals, a digital-to-analog converter configured to continuously generate a modulation signal, a mixer coupled to the receiver and the digital-to-analog converter and configured to encode the electromagnetic signals received by the receiver with the modulation signal generated by the digital-to-analog converter upon receipt of the electromagnetic signals by the receiver, and a transmitter coupled to the mixer and configured to transmit the encoded electromagnetic signals generated by the mixer.

A modulator is provided including a phase modulating component for modulating a phase of an electromagnetic signal. The phase modulating component includes a conductor for tunnelling the electromagne