Note: Measuring capacitance and inductance of a helical resonator and improving its quality factor by mutual inductance alteration | Zendy

Subhasis Panja | Zendy; S. De | Zendy; Sandeep Yadav | Zendy; Anurag Gupta | Zendy

Open Access

Note: Measuring capacitance and inductance of a helical resonator and improving its quality factor by mutual inductance alteration

Author(s) -

Subhasis Panja,

S. De,

Sandeep Yadav,

Anurag Gupta

Publication year - 2015

Publication title -

review of scientific instruments

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.605

H-Index - 165

eISSN - 1089-7623

pISSN - 0034-6748

DOI - 10.1063/1.4919910

Subject(s) - resonator , inductance , capacitance , q factor , equivalent series inductance , helical resonator , electromagnetic coil , materials science , kinetic inductance , radio frequency , equivalent series resistance , physics , bandwidth (computing) , optoelectronics , voltage , electrical engineering , computer science , telecommunications , engineering , electrode , quantum mechanics

Narrow bandwidth and high voltage radio frequency (RF) is an essential requirement for stable confinement of ions within a RF trap and helical resonators are commonly used for that purpose. Effective capacitance and inductance of a helical resonator are estimated by measuring resonant frequencies for different external loads. Load capacitance of an ion trap can be estimated from this method and a resonator can be constructed for desired resonant frequency. We demonstrate a very simple method to achieve higher Q-factor of a resonator by optimizing mutual separation between the primary antenna and helical coil. We also formulate a set of analytical equations for calculating overall inductance, resistance, and Q-factor of a loaded helical resonator.

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