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  2. Smith chart - Wikipedia

    en.wikipedia.org/wiki/Smith_chart

    The Smith chart (sometimes also called Smith diagram, Mizuhashi chart (水橋チャート), Mizuhashi–Smith chart (水橋スミスチャート), [1] [2] [3] Volpert–Smith chart (Диаграмма Вольперта—Смита) [4] [5] or Mizuhashi–Volpert–Smith chart) is a graphical calculator or nomogram designed for electrical and electronics engineers specializing in radio ...

  3. AN/URM-25 signal generator - Wikipedia

    en.wikipedia.org/wiki/AN/URM-25_signal_generator

    The AN/URM-25 was part of a series of vacuum tube-based signal generators built for the U.S. military in the early Cold War-era.. Today they are collected and used by vintage amateur radio and antique radio enthusiasts who say they provide reasonably high accuracy and stability for a low cost, with build quality reflecting tough military construction requirements and standards.

  4. Radio-frequency microelectromechanical system - Wikipedia

    en.wikipedia.org/wiki/Radio-frequency_micro...

    The prior art includes an RF MEMS frequency tunable fractal antenna for the 0.1–6 GHz frequency range, [18] and the actual integration of RF MEMS switches on a self-similar Sierpinski gasket antenna to increase its number of resonant frequencies, extending its range to 8 GHz, 14 GHz and 25 GHz, [19] [20] an RF MEMS radiation pattern ...

  5. List of RF connector types - Wikipedia

    en.wikipedia.org/wiki/List_of_RF_connector_types

    SR connector (from Russian: Cоединитель Pадиочастотный) is a Russian RF connector, based on the BNC connector and which comes in a 50 Ω and 75 Ω versions; TNC connector (threaded Neill-Concelman) Twin-BNC (Twinax) Twinax connectors are used with 78 Ω or 95 Ω conductor cables and operate from 0–200 MHz. Due to ...

  6. RIM-116 Rolling Airframe Missile - Wikipedia

    en.wikipedia.org/wiki/RIM-116_Rolling_Airframe...

    Mk 144 Guided Missile Launcher (GML) of the Mk 49 Guided Missile Launching System (GMLS) The RIM-116 Rolling Airframe Missile ( RAM ) is a small, lightweight, infrared homing surface-to-air missile in use by the German , Japanese , Greek , Turkish , South Korean , Saudi Arabian , Egyptian , Mexican , UAE , and United States navies.

  7. Missile guidance - Wikipedia

    en.wikipedia.org/wiki/Missile_guidance

    Contrast seekers use a video camera, typically black and white, to image a field of view in front of the missile, which is presented to the operator. When launched, the electronics in the missile look for the spot on the image where the contrast changes the fastest, both vertically and horizontally, and then attempts to keep that spot at a ...

  8. Radio-frequency identification - Wikipedia

    en.wikipedia.org/wiki/Radio-frequency_identification

    The RFID Network responded to these fears in the first episode of their syndicated cable TV series, saying that they are unfounded, and let RF engineers demonstrate how RFID works. [147] They provided images of RF engineers driving an RFID-enabled van around a building and trying to take an inventory of items inside.

  9. RF connector - Wikipedia

    en.wikipedia.org/wiki/RF_connector

    Various popular RF connectors Electronic symbols for the plug and jack coaxial connectors Time-domain reflectometry shows reflections due to impedance variations in mated RF connectors. An RF connector (radio frequency connector) is an electrical connector designed to work at radio frequencies in the multi-megahertz range.