Embodiments provide a device that includes a first circuit having a first input to receive a first sine wave signal and a second input to receive a second sine wave signal in quadrature with respect to each other and a current mode logic gate having a first input coupled to a first output of the first circuit and a second input coupled to a second output of the first circuit. The first circuit configured to deliver a first square wave signal and a second square wave signal. The current mode logic gate is configured to deliver a third square wave signal at a first level and a fourth square wave signal at a second level when the first and second square wave signals are simultaneously at their first levels and the first square wave signal is ahead of the second square wave signal.

A method of transmitting a Physical Layer Convergence Procedure (PLCP) frame in a Very High Throughput (VHT) Wireless Local Area Network (WLAN) system includes generating a MAC Protocol Data Unit (MPDU) to be transmitted to a destination station (STA), generating a PLCP Protocol Data Unit (PPDU) by adding a PLCP header, including an L-SIG field containing control information for a legacy STA and a VHT-SIG field containing control information for a VHT STA, to the MPDU, and transmitting the PPDU to the destination STA. A constellation applied to some of Orthogonal Frequency Division Multiplex (OFDM) symbols of the VHT-SIG field is obtained by rotating a constellation applied to an OFDM symbol of the L-SIGfield.

An in-phase (I) and quadrature (Q) demodulator includes an input for receiving a signal, a reference frequency source, and a sampler connected with the input. The sampler includes a sampler strobe connected with the reference frequency source, and a non-linear transmission line (NLTL) connected with the sampler strobe. The NLTL receives a strobe signal generated by the sampler strobe and multiplies a frequency of the strobe signal to generate a sampler signal. When the sampler receives a signal from the input, the sampler is configured to generate and output an intermediate frequency (IF) signal using the sampler signal. A splitter of the demodulator separates the IF signal into an in-phase (I) component and a quadrature (Q) component. Mixers receive the I and Q components and generate I and Q output signals shifted 90 in phase.

A System-on-a-Chip (SoC) for receiving telemetry messages over a radio-frequency (RF) channel is provided. The SoC comprises at least one RF module; at least one module for conversion of the signal from an analog form to a digital form; at least one input signal digital processing unit for filtering the signal from the RF module; and at least one memory unit. The SoC also comprises at least one processor for executing time shifting and frequency shifting of the signal. The processor is configured to process each time- and frequency-shifted signal by consecutive Fourier transforms, such that a first time element of each next transform is placed immediately after a last element of a previous transform. The processor is also configured to receive the signal, which signal was subjected to a carrier frequency change during transmission thereof, the signal having transmission frequencies that are within at least two processed spectrum sections.

A System-on-a-Chip (SoC) for receiving telemetry messages over a radio-frequency (RF) channel is provided. The SoC comprises at least one RF module; at least one module for conversion of the signal from an analog form to a digital form; at least one input signal digital processing unit for filtering the signal from the RF module; and at least one memory unit. The SoC also comprises at least one processor for executing time shifting and frequency shifting of the signal. The processor is configured to process each time- and frequency-shifted signal by consecutive Fourier transforms, such that a first time element of each next transform is placed immediately after a last element of a previous transform. The processor is also configured to receive the signal, which signal was subjected to a carrier frequency change during transmission thereof, the signal having transmission frequencies that are within at least two processed spectrum sections.

A method to receive telemetry messages over an RF channel, the method implemented by a system on a chip, in which a signal is received from the output of an input RF module, the received signal is offset in time and frequency wherein the signal, at first, is offset in time so that the offset magnitudes uniformly fill the length of one data bit, then, the signal is offset in frequency so that the offset magnitudes uniformly fill the space between the Fourier transform subcarriers, with the frequency offsets being independent of the time offsets; each signal processed at the preceding step is subjected to sequential Fourier transforms, with the first time element of each next transform immediately following the last element of the preceding transform; all messages are demodulated independently. The technical result consists in that messages can be received over multiple channels at multiple rates.

A method and an apparatus for measuring a displacement of an object according to steps of: dividing a signal into an I signal and a Q signal according to a phase of the signal, wherein the signal is reflected by the object after a transmission signal having a plurality of frequencies is emitted toward the object by the radar measurement system; estimating a direct current (DC) component from an N-tuple information acquired from the I signal and the Q signal; removing the estimated DC component to correct the I signal and the Q signal; and measuring the displacement of the object based on the corrected I signal and Q signal are provided.

A method includes a step of reading in the radio data signal and a radio data clock signal, a step of integrating a signal that is a function of the radio data signal and/or the radio data clock signal in order to determine an integral value curve, a step of decoding radio data signal information from the integral value curve, using the radio data clock signal and/or a phase position of the radio data signal, a step of ascertaining radio data signal quality information which represents the credibility of the decoded radio data signal information, using the radio data signal and/or the phase position of the radio data signal, and a step of providing the radio data signal information and the radio data signal quality information in order to provide a conditioned radio data signal.

Embodiments provide a device that includes a first circuit having a first input to receive a first sine wave signal and a second input to receive a second sine wave signal in quadrature with respect to each other and a current mode logic gate having a first input coupled to a first output of the first circuit and a second input coupled to a second output of the first circuit. The first circuit configured to deliver a first square wave signal and a second square wave signal. The current mode logic gate is configured to deliver a third square wave signal at a first level and a fourth square wave signal at a second level when the first and second square wave signals are simultaneously at their first levels and the first square wave signal is ahead of the second square wave signal.

A method of transmitting a Physical Layer Convergence Procedure (PLCP) frame in a Very High Throughput (VHT) Wireless Local Area Network (WLAN) system includes generating a MAC Protocol Data Unit (MPDU) to be transmitted to a destination station (STA), generating a PLCP Protocol Data Unit (PPDU) by adding a PLCP header, including an L-SIG field containing control information for a legacy STA and a VHT-SIG field containing control information for a VHT STA, to the MPDU, and transmitting the PPDU to the destination STA. A constellation applied to some of Orthogonal Frequency Division Multiplex (OFDM) symbols of the VHT-SIG field is obtained by rotating a constellation applied to an OFDM symbol of the L-SIGfield.