A method of transmitting information by electromagnetic wave, in which at least three information channels can be combined, each of which is related to the combination of its own carrier frequency and rotation frequency, It transmits a wave band, including a multi refracted component of the ...
aThe EM-MWD transmits its downhole data by emitting an electromagnetic wave into the formation, which carries the data to a surface antenna. Information received at the antenna is decoded (binary numbers) and sent to the EM-MWD unit on the rig using a hard wire. EM-MWD通过散发电磁波传送它...
aThe EM-MWD transmits its downhole data by emitting an electromagnetic wave into the formation, which carries the data to a surface antenna. EM-MWD通过散发电磁波传送它的downhole数据入形成,运载数据到表面天线。[translate]
Radar is a system that transmits an electromagnetic wave in a given direction and then detects this same wave reflected back by an obstacle in its path. 1.2.1 BASIC CONFIGURATION Figure 1.1 illustrates the first basic radar design. The various components of radar include: for transmission, a ...
An electromagnetic wave moves electrons in the plane perpendicular to the direction of propagation, not along the direction of propagation. The direction in which the field points determines the polarization of the radiated wave. When this direction is constant in time, the wave is said to be ...
An electromagnetic wave is used to drive... S Bhuyan,J Hu,CQ Sun - 《Japanese Journal of Applied Physics》 被引量: 7发表: 2008年 Cooperative Hybrid Wireless-Powerline Channel Transmission for Peer-to-Peer Energy Trading and Sharing System Department of Defense acquisition policy requires ...
An RF surface acoustic wave duplexer (D5DA942M5K2S2, Taiyo Yuden) isolated the backscattered signals from the downlink carrier. The SDR performed amplification of backscattered signals, downconversion from 945 MHz to DC and finally the analogue-to-digital conversion at 30 MSa s−1 (12-...
Flying insects that transmit human, animal, and plant pathogens have global impacts on human health, agriculture, and ecological stability1,2. Eighty percent of the world’s population is vulnerable to vector-borne diseases, which account for ca.17% of all infectious diseases and kill over 700,...
electromagnetic wave depends on the electric and magnetic permittivity of the environment; for an instant, in a vacuum, it travels with the speed of light in the straight direction from the source. The basic physical properties of theelectromagnetic fieldare given by the fourMaxwell equations. ...
The wavelength (λ0) of an electromagnetic wave in vacuum is given as the spatial period of the wave and is related to the frequency by the relation (8.101)λ0=cf, where c is the speed of light in vacuum (3 × 108 m/s) and f is the frequency of the wave in Hertz (Hz). Accor...