High-Q Coil

Simple SummaryContent extracted from patent full text and abstract with AI.

This invention relates to an improved coil designed for use in resonant (oscillating) circuits, especially in devices that measure electromagnetic signals. The coil consists of at least two insulated electrical conductors that are twisted together and wound to form the coil. A unique feature is a center tap (middle connection) created by electrically connecting opposite ends of the twisted wires. This structure increases the spacing between conductor sections, reducing losses and achieving a higher quality factor ('Q factor'), making the coil particularly suitable for precise electromagnetic measurement devices.

Use CasesContent extracted from patent full text and abstract with AI.

• Measurement devices for electromagnetic signals, such as NMR (Nuclear Magnetic Resonance) and ESR (Electron Spin Resonance) spectrometers.
• Sensitive scientific instruments that require high-Q coils, like frequency-selective circuits or filters.
• Precision electronic oscillating circuits (resonant circuits), such as in test and measurement equipment.
• Sensor technologies needing low-noise signal acquisition.
• Medical devices using electromagnetic detection or imaging.
• Miniaturized or portable electromagnetic spectroscopy systems.

BenefitsContent extracted from patent full text and abstract with AI.

• Provides a high quality factor (Q), leading to lower signal losses and higher measurement precision.
• Improves the signal-to-noise ratio (SNR) in electromagnetic measurement devices.
• Reduces AC resistance due to minimized skin and proximity effects in the twisted/wound design.
• Enables manufacturing of compact, cost-effective, and robust coils, including for mobile devices.
• Allows for the use of a center tap, which can suppress unwanted oscillations and improve circuit stability.
• Supports miniaturization, making possible portable and low-cost spectroscopic devices without the need for superconducting magnets.
• Versatile material compatibility (copper, silver, gold, litz wire), optimizing electrical performance.

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The problem addressed by the invention is that of providing a coil having advantageous properties for an oscillating circuit, in particular for a measuring device for electromagnetic signals. This problem is solved in that the coil comprises an electric conductor, the ends of which form the two terminals of the coil. Wound sections of the electric conductor are twisted together, that is to say wound helically around one another. The electric conductor is in principle surrounded by insulation, for example made of plastic or varnish. As a result of the twisting, increases in spacing between adjacent conductor sections within the windings are achieved. This results in an improved quality of the coil.