multipactor

multipactor

[′məl·tə‚pak·tər]
(electronics)
A high-power, high-speed microwave switching device in which a thin electron cloud is driven back and forth between two parallel plane surfaces in a vacuum by a radio-frequency electric field.
References in periodicals archive ?
critical parameters such as surface coatings tolerances complexity of manufacturing techniques rf power handling aspects such as multipactor and passive intermodulation mechanical and thermal aspects shall be carefully considered.Following these investigations and trade-offs engineering models of the most promising solutions at ka q v and w band shall be developed and tested to confirm the insertion loss performance improvement.
Regarding the power handling capabilities, although we do not have access to high-power phenomena simulators, such as corona or multipactor effects, conservative theoretical simulations show that this structure can manage several kW.
Multipactor in the vacuum has been considered for high-power components.
In practice, fringing fields generated around slots tend to significantly increase the voltage necessary to induce multipactor [34].
The European space industry has an excellent publication, ECSS-E-20-01A Multipaction Design and Test, along with the Multipactor Calculator V1.5.1 computer program to aid RF engineers in performing multipaction analysis at component, equipment, subsystem, and system level.
WEPA-2: Multipactor Breakdown Prediction in Rectangular Waveguide-based Components
It has been well recognized that when electrons in a vacuum cavity of microwave device are accelerated by high-power electric fields, their impingements against the metallic surface of the cavity may result in a self-sustained electron avalanche, i.e., multipactor discharge [1-5].
Given above reasons, multipactor is a critical issue in the design of microwave devices for space application [2], which has attracted much more attention from the scientific communities [3,4].
Custom designs can be TNC, BNC, N, MHV, SHV, C and made--minimum reverse polarity versions quantity 1000 pc, delivery 8 to 10 weeks M/A-COM (Tyco) SMP, 2.4 mm, SSMA, 2.92 mm, MTNC--A multipactor 3.5 mm, SMA, TR, TNC, ETNC, free variant of TNC N, 7 mm, SC, C, 7/16 IEC, for high power space HN, LC, LT, MLT, 7/8 EIA, 1 applications, size 8 5/8 EIA (types N, TNC and and 12 contacts for 7/16 IEC available with low low loss, low VSWR, PIM) high frequency performance for MIL-C-87104 and MIL-T-81490 in standard MIL-C-38999 housings, SL family of connectors MegaPhase Inc.
Tenders are invited for: h2020-esa-007 multipactor prediction techniques for gnss signals
Multipactor effects can be analyzed with VSim for microwave structures, such as waveguides and coaxial cables.
Design Data for the Control of Multipactor Discharge in Spacecraft Microwave and RF Systems