Tuner and radiation shield for planar electron paramagnetic resonance microresonators

Journal Article · Sun Feb 15 00:00:00 EST 2015 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4906898· OSTI ID:22392376

Narkowicz, Ryszard; Suter, Dieter ^[1]

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1. Fakultät Physik, TU Dortmund, 44221 Dortmund (Germany)

Planar microresonators provide a large boost of sensitivity for small samples. They can be manufactured lithographically to a wide range of target parameters. The coupler between the resonator and the microwave feedline can be integrated into this design. To optimize the coupling and to compensate manufacturing tolerances, it is sometimes desirable to have a tuning element available that can be adjusted when the resonator is connected to the spectrometer. This paper presents a simple design that allows one to bring undercoupled resonators into the condition for critical coupling. In addition, it also reduces radiation losses and thereby increases the quality factor and the sensitivity of the resonator.

• OSTI ID: 22392376
• Journal Information: Review of Scientific Instruments, Vol. 86, Issue 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ELECTRON SPIN RESONANCE
LOSSES
MANUFACTURING
MICROWAVE RADIATION
QUALITY FACTOR
RESONATORS
SENSITIVITY
SHIELDS
SPECTROMETERS
TUNING