30 results about "Effective radiated power" patented technology

An active antenna is provided that includes an antenna element for transmitting RF transmit signals at a predetermined effective radiated power (ERP). An antenna module is configured to be mounted to an aircraft, with the antenna element being mounted to the antenna module. A connector module is provided at the antenna module and is configured to be coupled to a communications link and receive electrical transmit signals from the communications link. A transmit path is provided within the antenna module and extends between the antenna element and the connector module. A power amplifier is provided on the antenna module along the transmit path. The power amplifier increases a power level of the electrical transmit signals, received from the communications link, by a predetermined amount sufficient to drive the antenna element to transmit the RF transmit signals at the predetermined ERP.

The invention provides a configurable multiple-valued matching field analysis method. According to the method, field association rules can be flexibly set; according to the set field association rules, the data is automatically checked when being imported, and whether the input data has error or not can be checked; if the data has error, prompt is carried out, so that the data wanted by a user can be accurately imported. The configurable multiple-valued matching field analysis method can be applied to an import facility of an effective radiated power (ERP) product, and is suitable for importing some special fields having multiple-valued matching conditions. After the special rules are set, the unique value can be determined when the multiple-valued matching field is imported, so that the accuracy of the imported data can be guaranteed.

The invention discloses a WIFI OTA (wireless fidelity over the air) testing method and system of a mobile terminal. The WIFI OTA (wireless fidelity over the air) testing method includes measuring effective radiated power of the mobile terminal at each position, and forming a directional diagram of the effective radiated power according to the same; determining a first position corresponding to the effective radiated power when being the strongest according to the directional diagram of the effective radiated power, and measuring a primary ERSbest (effective radiated sensitivity) of the mobile terminal at the first position; calculating a secondary ERSbest of the rest at a second position according to the following relation: ERS: ERS= ERSbest+( ERPbest-ERP (effective radiated power)), wherein the ERSbest is the effective radiated power at the first position, and the ERP is the effective radiated power of every other second positions; summing integration of the primary ERSbest measured and the secondary ERS acquired by calculating to acquire receive sensitivity of an antenna of the mobile terminal. According to the arrangement, testing effect can be improved.

A wireless communication network can reliably deliver high priority broadcast information from base stations to mobile terminals located deep in building and those located in scarcely populated areas that are remote from the base stations. Each of the base stations of the wireless communication network comprises a broadcast information input unit for receiving high priority broadcast information and a transmission power changing unit for changing the transmission power of the downlink common channel when high priority broadcast information is input to it. As broadcast information is input, the transmission power changing unit changes the transmission power of the downlink common channel so as to boost the effective radiation power used by the downlink common channel of the base station at places in the coverage of the base station that are subjected to a propagation loss. The effective radiation power to the mobile terminals located at places in the coverage of the base station that are subjected to propagation loss is boosted to raise the reception level of the mobile terminals located at such places.

The invention discloses a radar altimeter low interception performance test method, aiming to provide a radar altimeter low interception performance test method with full test index, high test precision and low test cost. The invention is realized through the following technical scheme: sending complex scene simulation information to a radar altimeter complex scene simulator by using a control computer; outputting a generated echo signal to the radar altimeter to start the radio frequency control software; managing the radiation switch status of the radar altimeter in real time; analyzing theneed for effective radiant power when the radar altimeter is operating normally at anyone height in the altimetry range; determining the minimum radiant power under the premise of meeting the altimetry performance; sending a transmitting signal to a power meter through an antenna connected to a power divider; testing the transmitting signal of the radar altimeter; transmitting the radiant time andradiant power to a performance analysis computer; and performing analysis according to the radiation parameter measurement results of the power meter, and calculating to obtain the power control range, the step, the accuracy and an interception factor.

A subscriber device (10) includes one or more sensors (102) for measuring a object electromagnetic characteristic, such as conductivity, permittivity or permeability. A controller (104) stores the object electromagnetic parameter in memory (106) and, operating in accordance with a performance enhancement routine stored in the memory (106), enhances operation of the subscriber device (10) in accordance with the electromagnetic parameter. The controller (104) may do this by adjusting the power of an amplifier (112), the frequency of a synthesizer (114) or the impedance of an antenna (110). A software program controlling the subscriber device and a corresponding method are described.

The method picks up data needed for correcting model by using data of tested forward received power in test data of actual network. Treating data includes following steps: accounting information of latitude and longitude of transmitting site in each subzone within network, transmitting power and antenna parameter of each subzone; calculating effective radiated power in each direction for each subzone, and distance between test point and transmitting site in each subzone; fitting of multielement non-linear regression method is utilized so as to obtain parameters of propagation model. Comparing with prior art, the invention uses tested data to correct model, omitting a series of works such as selecting station site, erecting antenna, driving cars for testing etc. The invention saves time, raises work efficiency providing model with high precision, and good portability.

An antenna design, having two symmetrical phased array blade antenna elements which provide improved lateral target coverage with an increased effective radiated power and exhibits smooth null-free bi-directional antenna patterns. Each blade antenna element is coupled to a 180 degrees hybrid divider/combiner by a semi-rigid RF cable. Each blade antenna element is also connected to a sub-resonant choke balun for improved impedance matching and resultant distortion-less antenna patterns.

An antenna design, having two symmetrical phased array blade antenna elements which provide improved lateral target coverage with an increased effective radiated power and exhibits smooth null-free unidirectional antenna patterns. The direction of the unidirectional antenna pattern is dictated by a switching command under control of a user. Each blade antenna element is coupled to a 90-degree hybrid coupler and an RF switching device by a semi-rigid RF cable. Each blade antenna element is also connected to a sub-resonant choke balun for improved impedance matching and resultant distortion-less antenna patterns.

Provided is an apparatus and method for measuring effective radiated power. The apparatus includes a reference signal power measuring unit configured to measure power of a reference signal from a wireless signal transmitted from a wireless device, and an effective radiated power calculating unit configured to calculate effective radiated power according to an allocation ratio of a reference signal in an entire signal domain using the measured reference signal power from the reference signal power measuring unit.

The invention discloses a test method and device of a vehicle-mounted phased-array antenna and electronic equipment. On one hand, whether a test result of an antenna is reliable or not is obtained according to a difference value between a theoretical value and an actual value of each characteristic parameter, and on the other hand, the performance of the antenna is further obtained through the size of effective radiation power. Therefore, the antenna can be tested from the two aspects of the characteristic parameters of the antenna pattern and the effective radiation power of the antenna, and compared with traditional manual testing, the testing method provided by the embodiment of the invention is higher in precision, smaller in error and more suitable for testing the vehicle-mounted phased-array antenna.

A repeater that passes traffic between network transceivers and user transceivers in a wireless communication system. The transponder contains: a network unit, which maintains a network link with the network transceiver; a subscriber unit, which maintains a subscriber link with the subscriber transceiver; a bidirectional communication path between the network unit and the subscriber unit, which facilitates self-government Signal communication between network transceivers and user transceivers in transponder hops between network transceivers and network elements, between user transceivers and user elements, and between network elements and between the subscriber units; and beamformers coupled to the network unit and the subscriber unit respectively and adapted to convey signals in the frequency bands of operation of the network and subscriber transceivers and to control the effective radiated power.