9 results about "Antenna factor" patented technology

The invention discloses a biconical antenna balun equivalent circuit modeling optimization method based on a multi-conductor transmission line, and belongs to the technical field of electromagnetic simulation. The method comprises the following steps: firstly, establishing a three-dimensional electromagnetic model of a biconical antenna balun based on a finite element method, and setting ports and defining boundary conditions in combination with an actual current transmission path; then, distribution parameters among conductors are extracted through a multi-conductor transmission line theory, and a Balun circuit topological structure is constructed; and finally, taking the antenna coefficient as an optimization target, carrying out iterative optimization on equivalent circuit element parameters by adopting a multi-target genetic algorithm, considering a plurality of optimization targets in a broadband range, and finally obtaining a high-precision equivalent circuit model. Through combination of electromagnetic simulation and an intelligent optimization algorithm, high-efficiency extraction of complex Balun structure distribution parameters and adaptive optimization of circuit parameters are realized, and the simulation precision of the biconical antenna is remarkably improved.

The invention relates to the field of cell antenna factor calibration, in particular to a power domain estimation method and device based on GTEM cell antenna factor calibration. The scheme comprises the following steps: determining a working frequency band according to application requirements, and selecting a plurality of calibration frequency points in the working frequency band; performing reference field intensity calibration on each selected calibration frequency point; measuring an initial azimuth angle based on the GTEM cell; measuring noise power, and establishing a noise power matrix; measuring the receiving power under the full angle; subtracting the corresponding noise power from the measured receiving power to obtain net signal power; calculating an antenna factor of the antenna under the current set angle and the calibration frequency point according to the antenna factor definition; and finally, calibrating and verifying the antenna factors. The method is suitable for power domain estimation based on GTEM cell antenna factor calibration.

Aspects of the subject disclosure may include, for example, obtaining a signal-to-interference-and-noise ratio (SINR) associated with each user equipment for a group of cells resulting in a group of SINR, and generating a plurality of antenna coefficients for each base station associated with each cell of the group of cells based on the group of SINR. Further embodiments can include providing the plurality of antenna coefficients to each base station associated with each cell of the group of cells, wherein each base station configures an antenna array according to the plurality of antenna coefficients. Other embodiments are disclosed.

This disclosure proposes a signal processing method and apparatus based on integrated communication and sensing. In response to acquiring an echo signal, the method denoises the echo signal using a pre-constructed sensing model to obtain a target-denoised echo signal, thus removing noise to a certain extent and solving the problem of poor echo signal quality. Further, the target-denoised echo signal is subjected to multilinear decomposition to obtain a subcarrier factor matrix, a symbol factor matrix, and an antenna factor matrix. Based on these matrices, the elevation angle, azimuth angle, range, and velocity of multiple targets included in the echo signal are estimated. By utilizing structured prior knowledge of the signal, stable and high-precision extraction of target parameters from low-quality echo signals is achieved.

Aspects of the subject disclosure may include, for example, obtaining a signal-to-interference-and-noise ratio (SINR) associated with each user equipment for a group of cells resulting in a group of SINR, and generating a plurality of antenna coefficients for each base station associated with each cell of the group of cells based on the group of SINR. Further embodiments can include providing the plurality of antenna coefficients to each base station associated with each cell of the group of cells, wherein each base station configures an antenna array according to the plurality of antenna coefficients. Other embodiments are disclosed.

This application discloses a calibration device and method for an active rod antenna, relating to the field of antenna calibration. The device includes a metal shielding housing and a resistive T-network module and a capacitor integrated within the metal shielding housing. The resistive T-network module simulates the input impedance of the active rod antenna, and the capacitor simulates the distributed capacitance. When the input RF interface is connected to a standard signal source, the output RF interface is connected to a spectrum analyzer, and the ground terminal is connected to the active antenna host, the antenna factor of the active rod antenna is calculated by measuring the first signal strength at the output RF interface and the second signal strength at the output port of the active antenna host, thus completing the calibration. This application enables portable, accurate, and efficient calibration of active rod antennas.

The invention discloses a method and a measuring device for determining an antenna factor of a monopole antenna. The invention relates to a method for determining an antenna factor of a monopole antenna. A universal artificial antenna is provided, and the coupling capacitance thereof is determined. The matching device is connected with the universal artificial antenna, and scattering parameters associated with the universal artificial antenna are measured. A calibration adapter replaces a universal artificial antenna, where scattering parameters associated with the calibration adapter are measured. An input capacitance of the matching device is determined. The monopole antenna is connected with the matching device and the universal artificial antenna, and scattering parameters associated with the universal artificial antenna and scattering parameters associated with the calibration adapter are measured. The calibration adapter replaces a universal artificial antenna. The capacitance of the monopole antenna is calculated. The antenna factor is determined based on a capacitance of the monopole antenna, a coupling capacitance of the universal artificial antenna, and an input capacitance of the matching device. A measuring device is shown.

This invention belongs to the field of radio communication technology, specifically relating to a method, system, device, and medium for calculating eLoran signal field strength. The method includes acquiring the eLoran signal, antenna factor, and feeder loss parameters; linearly averaging the eLoran signal to obtain the peak values ​​of each peak before 37.5 μs; calculating the signal envelope amplitude at 25 μs based on the peak values ​​of each peak before 37.5 μs, a preset amplitude ratio, and preset weights; and calculating the signal field strength based on the signal envelope amplitude at 25 μs, the antenna factor, and the feeder loss parameters. By using each peak of the eLoran signal and its corresponding ratio to calculate the signal envelope amplitude at 25 μs, this method can reduce interference and improve the accuracy of the calculation if the peak value of a certain peak is affected by interference.

A method for determining an antenna factor of a monopole antenna includes providing an universal artificial antenna and determining its coupling capacitance. A matching device is connected with the universal artificial antenna (UAA) and a scattering parameter associated with the UAA is measured. A calibration adapter replaces the UAA, wherein a scattering parameter associated with the calibration adapter is measured. An input capacitance of the matching device is determined. A monopole antenna is connected with the matching device and the UAA, wherein a scattering parameter associated with the UAA and a scattering parameter associated with the calibration adapter are measured. The calibration adapter replaces the UAA. A capacitance of the monopole antenna is calculated. The antenna factor is determined based on the capacitance of the monopole antenna, the coupling capacitance of the UAA and the input capacitance of the matching device.