Results 61 to 70 of about 33,517,134 (252)
Antipodal Vivaldi Antenna for Water Pipe Sensor and Telemetry
International Journal of Geophysics, 2012 An antipodal Vivaldi antenna operates simultaneously for telemetry and sensing when placed conformally onto PVC pipes. Good radiation efficiency is realised and the antenna impedance matching remains stable when a pipe is empty or contains water.
Giuseppe Ruvio +3 more
doaj +1 more source
Crystals, 2023 The rapid worldwide spread of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has created a series of problems. Detection platforms based on graphene field-effect transistors (GFETs) have been proposed to achieve a rapid diagnosis of ...
Chao-yi Zhu +5 more
doaj +1 more source
High-current, high-frequency capacitors [PDF]
, 1983 The NASA Lewis high-current, high-frequency capacitor development program was conducted under a contract with Maxwell Laboratories, Inc., San Diego, California. The program was started to develop power components for space power systems.
Renz, D. D.
core +1 more source
IET Radar, Sonar & NavigationRadar systems are evolving towards distributed receiver networks. As individual stations might be separated too far to install a cable link, novel methods are required to synchronise individual data records in the time domain.
Erik Busley +3 more
doaj +1 more source
Dealing with co‐channel interference in multi‐channel airborne passive radar
IET Radar, Sonar & Navigation, 2021 We address the problem of co‐channel interference (CCI) in multi‐channel airborne passive radars using digital broadcast signals of opportunity. A framework for suppressing the CCI is proposed, based on a two‐stage approach, which reflects the range ...
Diego Cristallini +4 more
doaj +1 more source
Computer determines high-frequency phase stability [PDF]
, 1964 Determination of phase stability of a high frequency signal using a computer is accomplished by a circuit using two auxiliary oscillators, multipliers and low-pass filters in cross correlation with the oscillator producing the signal of ...
Nichols, G. B.
core +1 more source
Black hole radiation with high frequency dispersion [PDF]
, 1999 We consider one model of a black hole radiation, in which the equation of motion of a matter field is modified to cut off high frequency modes. The spectrum in the model has already been analytically derived in low frequency range, which has resulted in ...
D. G. Swanson +12 more
core +2 more sources
MetrologyThis paper introduces a method for calibrating radar sensors in a multi-sensor cinemometer system using a reference cinemometer based on CW Doppler radar. The method involves synchronizing sensors, pairing data with reference measurements, and performing
Seif Ben-Hassine +4 more
doaj +1 more source
High frequency temperature variability reduces the risk of coral bleaching
Nature Communications, 2018 Coral bleaching is the detrimental expulsion of algal symbionts from their cnidarian hosts, and predominantly occurs when corals are exposed to thermal stress. The incidence and severity of bleaching is often spatially heterogeneous within reef-scales (
Aryan Safaie +8 more
semanticscholar +1 more source
Magnetoresistance in copper at high frequency and high magnetic fields
, 2017 In halo dark matter axion search experiments, cylindrical microwave cavities are typically employed to detect signals from the axion-photon conversion.
Ahn, Moohyun +10 more
core +1 more source