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10 results about "Equivalent isotropically radiated power" patented technology
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In radio communication systems, equivalent isotropically radiated power or, alternatively, effective isotropically radiated power is the amount of power that a theoretical isotropic antenna would emit to produce the peak power density observed in the direction of maximum antenna gain. EIRP can take into account the losses in transmission line and connectors and includes the gain of the antenna. The EIRP is often stated in terms of decibels over a reference power emitted by an isotropic radiator with an equivalent signal strength. The EIRP allows comparisons between different emitters regardless of type, size or form. From the EIRP, and with knowledge of a real antenna's gain, it is possible to calculate real power and field strength values. where and are in dBm, cable losses is in dB, and antenna gain is expressed in dBi, relative to a isotropic reference antenna. This example uses dBm, although it is also common to see dBW. Decibels are a convenient way to express the ratio between two quantities. dBm uses a reference of 1 mW and dBW uses a reference of 1 W. and A transmission output of 50 W is the same as 17 dBW or 47 dBm.
Anti-unmanned aerial vehicle radar system and detection method and device thereof, electronic equipment and storage medium
The invention discloses an anti-unmanned aerial vehicle radar system, a detection method and device thereof, electronic equipment and a storage medium. The anti-unmanned aerial vehicle radar system comprises a main control device, a radio frequency circuit and a front-end array antenna module. The main control device is used for sending a driving control signal to the radio frequency circuit and processing a feedback signal to obtain a detection result; the radio frequency circuit is used for generating a continuous wave radio frequency signal based on the driving control signal, sending the continuous wave radio frequency signal to the front-end array antenna module, receiving a reflection signal fed back by the front-end array antenna module to generate a feedback signal, and sending the feedback signal to the main control device. The anti-unmanned aerial vehicle radar system works based on frequency modulated continuous waves, and has the advantages of higher scanning speed, better interference resistance, higher estimation precision, low equivalent omnidirectional radiation power, better dynamic range adaptability and the like compared with a traditional analog beam forming technology. Therefore, existence of the unmanned aerial vehicle can be found and identified in time.
Owner:NANJING HURYS INTELLIGENT TECH CO LTD
Method for beam alignment
PCT designated stageWO2026092987A1Spatial transmit diversityEquivalent isotropically radiated powerUser equipment
A method comprising: decoding, by a user equipment (UE), in connection with a random access (RACH) procedure, a configuration for the synchronization signal block (SSB) burst interval; determining if the SSB burst interval is divided into a static transmission part with no beam sweeping and a dynamic receiving part including beam sweeping, wherein the receiving part is used as random access occasion in the RACH procedure; determining if the static transmission part is configured to toggle between two or more wide horizontal beams; configuring, in response to the toggle being configured, at least one static beam for first toggled transmission SSB signals; measuring power level values of the first toggled transmission SSB signals using said at least one static beam; deriving Equivalent Isotropic Radiated Power (EIRP) difference between the toggled transmission beams; and normalizing, upon beam alignment procedure for the rest of the transmission SSB bursts, the measured power level values of the SSBs by the EIRP difference
Owner:NOKIA TECHNOLOGIES OY
Low earth orbit satellite earth beam pointing method and apparatus, storage medium and electronic device
This invention relates to the field of low-Earth orbit (LEO) satellites, specifically disclosing a method, apparatus, storage medium, and electronic device for LEO satellite-to-Earth beam staring. The method includes: adjusting the beamwidth of a target beam in real time based on the beam pointing angle to control the Earth coverage area of the LEO satellite during its transit relative to the target Earth surface location to remain within a preset area. The target beam provides services to terminals at the target Earth surface location, and the beam pointing angle is the real-time angle between the target beam and the beam pointing normal, with the beam pointing normal aligned with the Earth's center in real time. The invention also involves adjusting the equivalent isotropic radiation power of the target beam in real time based on the beam pointing angle to control the transmit power flux density of the LEO satellite during its transit relative to the target Earth surface location to remain within a preset density range. This invention solves the technical problem of service interruptions caused by frequent beam switching within LEO satellites.
Owner:BEIJING INST OF REMOTE SENSING EQUIP
Multi-beam synthesis method and device based on collaborative null generation strategy
ActiveCN121997779AAchieve multi-beam comprehensive effectreduce distractionsBiological modelsDesign optimisation/simulationAntenna designSynthesis methods
The invention provides a multi-beam synthesis method and device based on a collaborative null generation strategy, and belongs to the technical field of antenna design. The method provided by the invention comprises the following steps: randomly generating a design index in a beam direction range, and constructing a mask matrix based on the design index; constructing a multi-beam comprehensive model, inputting the mask matrix into the multi-beam comprehensive model, and training the multi-beam comprehensive model to output amplitude excitation and phase excitation of each beam; constructing a target mask matrix according to beam performance indexes in an actual application scene; and inputting the target mask matrix into a trained multi-beam comprehensive model, outputting amplitude excitation and phase excitation of each array unit for different beams, loading the amplitude excitation and the phase excitation to a multi-beam phased array, and generating a multi-beam far-field directional diagram. The invention provides a multi-beam synthesis method and device based on a collaborative null generation strategy. The method and the device are used for reducing the loss of equivalent omnidirectional radiation power on the premise of effectively suppressing multi-beam interference.
Owner:ZHEJIANG UNIV
Satellite darkroom wireless test system and test method thereof
The embodiment of the invention provides a satellite darkroom wireless test system and a test method thereof. The method is applied to aerospace technical field. According to the system, a satellite in a darkroom is connected with a satellite transmitting / receiving antenna in the darkroom through a radio frequency line, a ground station system outside the darkroom is connected with a ground transmitting / receiving antenna in the darkroom through a radio frequency line, and a computing device outside the darkroom is connected with the satellite and the ground station system through a switch. The system is used for simulating a satellite-ground wireless communication function and testing satellite wireless transmitting and receiving indexes, and the satellite wireless transmitting and receiving indexes comprise at least one of equivalent omnidirectional radiation power, single-machine sensitivity and effective omnidirectional receiving sensitivity. In this way, satellite wireless transmitting and receiving indexes can be quantified, the satellite-ground wireless communication function can be simulated, the on-orbit troubleshooting time and labor cost are reduced, and the influence of electromagnetic radiation on operators is avoided.
Owner:MIANYANG TIANYI SPACE TECH CO LTD
A fast and efficient array beam squint angle calibration method for equivalent isotropically radiated power test
The application discloses a kind of fast and efficient array beam deflection angle calibration methods for equivalent isotropically radiated power test, including pre-calibration stage and calibration stage;Pre-calibration stage, a standard antenna under test is used as reference, placed in the quiet zone of compact range;In the case of unfocused feed, rotate reference 0 and 20, record the two sets of data;In the case of defocus, rotate reference 0, θ m , 30 and get the corresponding S 21 , record the three sets of data;Get the expression of two deflection angle fitting functions;Calibration stage places the problematic device in the quiet zone of compact range, and positions the feed according to the feed deflection angle 0, 20, -20, respectively, to obtain the corresponding S 21 ;The three sets of test values are brought into the unfocused compact range angle power fitting function and the defocused compact range angle power fitting function, to obtain the peak deflection angle and deflection direction of the problematic device.The application realizes the angle calibration of production line test equipment, with the characteristics of convenience and efficiency.
Owner:UNLIMITED INFORMATION COMMUNICATION (SUZHOU) TECHNOLOGY CO LTD
Directional communications for antenna subarrays
PCT designated stageWO2026096125A1Power managementSpatial transmit diversityMimo transmissionTransmitted power
Some examples of the techniques described herein may relate to multi-user multiple-input multiple-output (MU-MIMO) transmissions as a communications scheme for equivalent isotropic radiated power (EIRP) masks. For MU-MIMO transmissions, co-scheduled user equipments (UEs) may be separated in azimuth or elevation domains. Some approaches are provided in which UE separation or subarray architecture at a network may be incorporated in terms of EIRP masks. In some approaches, a wireless device (e.g., base station, transmission-reception point (TRP), or network entity, among other examples) may receive signals from UEs in different directions. An angular separation may be utilized to select a beamforming scheme (e.g., discrete Fourier transform (DFT) beamforming, zero-forcing beamforming, or inverse beamforming, among other examples). In some examples, transmit power may be controlled utilizing a power backoff scheme that may be selected based on the angular range or associated with a beamforming scheme.
Owner:QUALCOMM INC
High-speed satellite communication system applied to deep sea microminiature buoy
The invention provides a high-speed satellite communication system applied to a deep sea microminiature buoy, which is sealed in a watertight cover and comprises a multi-system common-array-plane antenna, a transceiving radio frequency front end and a wireless communication monitoring unit which are designed in an integrated manner and share the same structure, the multi-system common-array-plane antenna is a circular array antenna, an S-band planar array antenna, a Beidou / GPS positioning receiving antenna and a wireless MIMO wireless antenna are integrated on the array plane, and through cooperation with a receiving and transmitting radio frequency front end, on the premise that the ratio of equivalent omni-directional radiation power and antenna gain to system noise temperature meets the communication link condition, the communication efficiency is improved. The receiving and transmitting of Tiantong No.1 communication signals and Tianchain No.2 SMA signals, the receiving of Beidou / GPS positioning signals and the receiving and transmitting of wireless communication signals are realized; and the wireless communication monitoring unit monitors the internal working state of the system in real time, issues an instruction to realize function configuration, and establishes a wireless data transmission link with a ship end platform within 5km.
Owner:NAT SPACE SCI CENT CAS
Beidou navigation satellite signal ground-based monitoring method and system
The application discloses a Beidou navigation satellite signal ground-based monitoring method and system, and comprises the following steps: obtaining ground-based system receiving power P R (θ, φ) through signal power received by a ground-based receiving station R (θ, φ) according to preset product information of an antenna of the ground-based monitoring station; obtaining a transmission distance according to positions of the ground-based receiving station and the Beidou navigation satellite; and obtaining equivalent omnidirectional radiation power of the Beidou navigation satellite according to the ground-based system receiving power P R (θ, φ), the antenna pattern G R (θ, φ) and the transmission distance. The application solves the bottleneck problem of the Beidou system of China in the process of quantitative remote sensing application.
Owner:XIAN INSTITUE OF SPACE RADIO TECH
Directional communications for antenna subarrays
PendingUS20260121711A1Spatial transmit diversitySynchronisation arrangementMimo transmissionTransmitted power
Some examples of the techniques described herein may relate to multi-user multiple-input multiple-output (MU-MIMO) transmissions as a communications scheme for equivalent isotropic radiated power (EIRP) masks. For MU-MIMO transmissions, co-scheduled user equipments (UEs) may be separated in azimuth or elevation domains. Some approaches are provided in which UE separation or subarray architecture at a network may be incorporated in terms of EIRP masks. In some approaches, a wireless device (e.g., base station, transmission-reception point (TRP), or network entity, among other examples) may receive signals from UEs in different directions. An angular separation may be utilized to select a beamforming scheme (e.g., discrete Fourier transform (DFT) beamforming, zero-forcing beamforming, or inverse beamforming, among other examples). In some examples, transmit power may be controlled utilizing a power backoff scheme that may be selected based on the angular range or associated with a beamforming scheme.
Owner:QUALCOMM INC