Development and characterization of coaxial two-way switch for RF plasma discharge experiments
Raj Singh, Vishant Gahlaut, Vangalla Veera Babu, Uttam Goswami, Meenu Kaushik, L. Vijayakumar, Bhupender Sandher, Joydeep Ghosh
TL;DR
This paper introduces a high-performance coaxial two-way RF switch designed for efficient RF plasma discharge experiments with faster transitions and dual transmission capabilities.
Contribution
The novel coaxial two-way RF switch enables simultaneous dual transmissions, improving efficiency and reducing costs compared to traditional SPDT switches.
Findings
The switch allows two RF transmissions simultaneously, unlike conventional SPDT switches.
It supports RF amplifier testing across a wide power range from 2 kW to 1.5 MW.
The design addresses the need for rapid and precise RF signal routing in plasma experiments.
Abstract
A developed high-performance 3−1/8″ coaxial two-way RF switch tailored for RF plasma discharge experiments including pre-ionization and start-up; wall conditioning and Ion Cyclotron Resonance Heating has been presented (Bora et al. in Nucl Fusion 46:572–584, 2006; Wilson and Bonoli, in Phys Plasmas 22:021801, 2015). The proposed switch is configured as a coaxial two-way system, meticulously engineered to facilitate seamless transitions in coaxial connections between RF transmitters and antennas for RF power coupling to plasma and other applications and between RF transmitters and dummy loads as per the requirement, all accomplished with an impressively minimal changeover time. The foremost importance of this switch is that it can make two transmissions at a time in contrast to a normal SPDT (single pole double throw) switch where at a time only one connection is available and hence…
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Taxonomy
TopicsPlasma Diagnostics and Applications · Laser Design and Applications · Plasma Applications and Diagnostics