antenna-radiating element
11radio — /ray dee oh /, n., pl. radios, adj., v., radioed, radioing. n. 1. wireless telegraphy or telephony: speeches broadcast by radio. 2. an apparatus for receiving or transmitting radio broadcasts. 3. a message transmitted by radio. adj. 4. pertaining …
12WWV (radio station) — WWV is the callsign of NIST s shortwave radio station located in Fort Collins, Colorado. WWV s main function is the continuous dissemination of official U.S. Government time signals. The station broadcasts simultaneously on five distinct… …
13VLF Transmitter Cutler — Closeup of a few of the antenna towers of the Cutler VLF Transmitter. The VLF Transmitter Cutler is the United States Navy s very low frequency (VLF) station at Cutler, Maine. The station provides one way communication to the United States… …
14Isotropy — is uniformity in all orientations; it is derived from the Greek iso (equal) and tropos (direction). Precise definitions depend on the subject area. Exceptions, or inequalities, are frequently indicated by the prefix an, hence anisotropy.… …
15SHARAD — (Mars SHAllow RADar sounder) is a subsurface sounding radar embarked on the Mars Reconnaissance Orbiter probe. It complements the MARSIS instrument on Mars Express, providing lower penetration capabilities (some hundred meters) but much finer… …
16scanning — In radar, the motion of the radar antenna assembly when searching for targets. Scanning usually follows a systematic pattern involving one or more of the following: i. In horizontal scanning (or search lighting), the antenna is continuously… …
17Radiator — Radiators and convectors are types of heat exchangers designed to transfer thermal energy from one medium to another for the purpose of cooling and heating. The majority of radiators are constructed to function in automobiles, buildings, and… …
18Active Electronically Scanned Array — An Electronically Scanned Array (AESA), also known as active phased array radar is a type of radar whose transmitter and receiver functions are composed of numerous small transmit/receive (T/R) modules. AESA radars feature short to instantaneous… …
19corner reflector — i. A passive ECM (electronic countermeasure) device, normally consisting of three metallic surfaces or screens perpendicular to one another. It is designed to act as a radar target or marker by producing a very strong radar echo. The returned… …
20Input impedance — The input impedance, load impedance, or external impedance of a circuit or electronic device is the Thévenin equivalent impedance looking into its input.In audio systemsGenerally in audio and hi fi, the input impedance of components is several… …
