A radar fill level measurement device can be provided, which comprises a frequency synthesizer configured to generate an oscillator signal, a high-frequency signal generation module configured to generate a transmission signal based on the oscillator signal, and an energy-supply module configured to supply electrical energy to the frequency synthesizer and the high-frequency signal generation module. Associated methods and computer-accessible medium can also be provided. The frequency synthesizer can comprise a control device, a reference oscillator and a phase-locked loop. The phase-locked loop can comprise a phase-locked device and an oscillator. The phase-locked loop can be configured to adjust a frequency of the oscillator signal to a target value, and the phase-locked device can be configured to provide a control signal for the control device when the frequency of the oscillator signal has reached the target value. The control device can also be configured to actuate the energy-supply module to supply the electrical energy to the high-frequency signal generation module before the control signal is provided by the phase-locked device.

A non-contact phase-locked and self-injection-locked vital sign sensor includes a self-oscillating voltage-controlled frequency-adjustable radiating element and a phase-locked loop. The self-oscillating voltage-controlled frequency-adjustable radiating element is used for transmitting an oscillation signal to an organism and for receiving a corresponding reflected signal from the organism to be posed at a self-injection-locked state, the oscillation signal being tuned by a vital sign of the organism to form a frequency-tuned signal. The phase-locked loop is used for demodulating the frequency-tuned signal to obtain a corresponding vital signal of the organism. By comparing the oscillation signal frequency-eliminated and outputted from the self-oscillating voltage-controlled frequency-adjustable radiating element with a reference signal, a corresponding comparison result is used to vary a phase of the frequency-divided oscillation signal for maintaining the same phase of the reference signal. Thereupon, the oscillation frequency can be stabilized, and the measurement sensitivity can be enhanced.

A linear actuator includes a piston, a transmitter, and a receiver. The piston is configured to linearly extend and retract (such as within a cover tube). The transmitter is configured to generate a transmit electromagnetic waveform and direct the transmit electromagnetic waveform along a length of the piston. The receiver is configured to receive a return electromagnetic waveform that includes the transmit electromagnetic waveform after travelling to an extended end of the piston and returning to the receiver and determine a position of the piston based on a phase difference between the transmit electromagnetic waveform and the return electromagnetic waveform.

A linear actuator includes a piston, a transmitter, and a receiver. The piston is configured to linearly extend and retract (such as within a cover tube). The transmitter is configured to generate a transmit electromagnetic waveform and direct the transmit electromagnetic waveform along a length of the piston. The receiver is configured to receive a return electromagnetic waveform that includes the transmit electromagnetic waveform after travelling to an extended end of the piston and returning to the receiver and determine a position of the piston based on a phase difference between the transmit electromagnetic waveform and the return electromagnetic waveform.

A testing system includes: a bilinear polarized antenna for receiving and dividing a circularly polarized radio wave associating with a horizontal and a vertical polarization path of an object-to-be-tested into a first and a second high frequency signal; a phase retarder for delaying a phase of the first high frequency signal by 90 degrees to form a first high frequency signal with a phase delay of 90 degrees; a power splitter for receiving or synthesizing the first high frequency signal with the phase delay of 90 degrees and the second high frequency signal; and a high frequency signal transceiver for measuring power of the first high frequency signal with the phase delay of 90 degrees and the second high frequency signal and determining states of the horizontal and vertical polarization paths of the object-to-be-tested based on the power. Therefore, the testing system can speed up testing of the object-to-be-tested.

A testing system includes: a bilinear polarized antenna for receiving and dividing a circularly polarized radio wave associating with a horizontal and a vertical polarization path of an object-to-be-tested into a first and a second high frequency signal; a phase retarder for delaying a phase of the first high frequency signal by 90 degrees to form a first high frequency signal with a phase delay of 90 degrees; a power splitter for receiving or synthesizing the first high frequency signal with the phase delay of 90 degrees and the second high frequency signal; and a high frequency signal transceiver for measuring power of the first high frequency signal with the phase delay of 90 degrees and the second high frequency signal and determining states of the horizontal and vertical polarization paths of the object-to-be-tested based on the power. Therefore, the testing system can speed up testing of the object-to-be-tested.

Positioning reference signals are transmitted in a downlink direction from base stations (200) of a wireless communication network to a wireless communication device (100) or in an uplink direction from the wireless communication device (100) to base stations (200) of the wireless communication network. According to a frequency hop pattern, a radio interface of the wireless communication device is switched between multiple different frequency ranges. In this way, the wireless communication device (100) can receive the downlink positioning reference signals on multiple different frequencies defined by the frequency hop pattern or send the uplink positioning reference signals on multiple different frequencies defined by the frequency hop pattern.

Positioning reference signals are transmitted in a downlink direction from base stations (200) of a wireless communication network to a wireless communication device (100) or in an uplink direction from the wireless communication device (100) to base stations (200) of the wireless communication network. According to a frequency hop pattern, a radio interface of the wireless communication device is switched between multiple different frequency ranges. In this way, the wireless communication device (100) can receive the downlink positioning reference signals on multiple different frequencies defined by the frequency hop pattern or send the uplink positioning reference signals on multiple different frequencies defined by the frequency hop pattern.

A testing system includes: a bilinear polarized antenna for receiving and dividing a circularly polarized radio wave associating with a horizontal and a vertical polarization path of an object-to-be-tested into a first and a second high frequency signal; a phase retarder for delaying a phase of the first high frequency signal by 90 degrees to form a first high frequency signal with a phase delay of 90 degrees; a power splitter for receiving or synthesizing the first high frequency signal with the phase delay of 90 degrees and the second high frequency signal; and a high frequency signal transceiver for measuring power of the first high frequency signal with the phase delay of 90 degrees and the second high frequency signal and determining states of the horizontal and vertical polarization paths of the object-to-be-tested based on the power. Therefore, the testing system can speed up testing of the object-to-be-tested.

A testing system includes: a bilinear polarized antenna for receiving and dividing a circularly polarized radio wave associating with a horizontal and a vertical polarization path of an object-to-be-tested into a first and a second high frequency signal; a phase retarder for delaying a phase of the first high frequency signal by 90 degrees to form a first high frequency signal with a phase delay of 90 degrees; a power splitter for receiving or synthesizing the first high frequency signal with the phase delay of 90 degrees and the second high frequency signal; and a high frequency signal transceiver for measuring power of the first high frequency signal with the phase delay of 90 degrees and the second high frequency signal and determining states of the horizontal and vertical polarization paths of the object-to-be-tested based on the power. Therefore, the testing system can speed up testing of the object-to-be-tested.