Electromagnetic gradiometers

JA Bickford - US Patent 11,525,870, 2022 - Google Patents
An electromagnetic gradiometer that includes multiple tor sionally operated MEMS-based
magnetic and/or electric field sensors with control electronics configured to provide magnetic …

Miniature electric field detector

JA Bickford, JJ Wheeler, SL Golmon - US Patent 12,089,941, 2024 - Google Patents
According to various aspects, a sensor system is provided comprising a first substrate
configured to be coupled to a user, an electric field detector to detect a user electric field and …

Femto-tesla MEMS RF antenna with integrated flux concentrator

RL Kubena, WS Wall - US Patent 11,563,420, 2023 - Google Patents
(57) ABSTRACT A RF antenna or sensor has a substrate, a resonator operable at UHF
disposed on the substrate, the resonator preferably having a quartz bar or body with …

Ultra-low noise sensor for magnetic fields

JA Bickford, JJ Bernstein, MS Weinberg… - US Patent …, 2018 - Google Patents
An ultra-low noise sensor for magnetic fields comprises a mechanically resonant structure
having a magnetized proof mass. The displacement of the proof mass due to a magnetic …

Magnetostrictive MEMS magnetic gradiometer

RL Kubena, WS Wall - US Patent 11,988,727, 2024 - Google Patents
A magnetic gradiometer sensor comprising a substrate with at least a pair of resonators
disposed thereon, wherein each of the at least a pair of resonators is coated with a …

Magnetic sensor device having magnetic field converter, magnetic field detector, and magnetic shield

CAI Yongfu - US Patent 12,072,398, 2024 - Google Patents
A magnetic sensor device includes a magnetic field converter that receives an input
magnetic field input along a first direction and outputs an output magnetic field along a …

Magnetic sensor device with a magnetic field converter, a magnetic detector, and a magnetic shield

CAI Yongfu - US Patent 11,747,410, 2023 - Google Patents
A magnetic sensor device includes a magnetic field converter that receives an input
magnetic field input along a first direction and outputs an output magnetic field along a …

Miniature electric field detector

JA Bickford, SL Golmon, PA Ward, WD Sawyer… - US Patent …, 2022 - Google Patents
Aspects are generally directed to a compact and low-noise electric field detector, methods of
operation, and methods of production thereof. In one example, an electric field detector …