Loop Antennas With Ferromagnetic Core TRIZ Cases

Filters block cellular signals to prevent eddy currents in metal casings, expanding near-field operation area.

Local magnetic saturation of a dispersive ferrite substrate reduces radiation losses while maintaining impedance stability for compact antennas.

A hearing instrument uses orthogonal coils wound on a shared ferrite core to enable compact wireless charging and data transmission.

Composite connecting piece seals antenna chamber, protecting electronics from moisture and vibration.

A tri-axial antenna arrangement measures orthogonal magnetic field components to calculate a transmitter's precise three-dimensional position.

A magnetic sheet serves as an antenna substrate, laminating conductive foil to eliminate adhesive layers and reduce device thickness.

Adjusting the phase difference between two loop antennas from 130 to 230 degrees resolves the trade-off between expanding coverage and maintaining uniformity.

Stacked cube-shaped unit cells create a bi-directional magnetic permeability enhanced metamaterial substrate.

A coil antenna uses a loose winding portion to slide wires and adjust inductance values directly on the bobbin.

Movable coil assemblies compensate for hysteresis losses and nonlinearity to maintain high Q factors during wireless power transfer.

Segmented magnetic cores with orthogonal windings integrate heat pipes to dissipate internal heat, enabling high power density without excessive volume.

A ferrite core steers magnetic flux through passive RFID antennas to boost energy transfer efficiency in stacked gaming tokens.

Aperture arrays use angle multiplexing to extend electromagnetic wave path length and storage time within recirculating loops.

A segmented NFC antenna module uses partially overlapping radiation patterns on stacked sheets to maximize signal reception performance.

Restriction portion prevents wire displacement during lamination, maintaining coil inductance despite shortened core length.

Layered LTCC coils stabilize resonant frequency near metal surfaces, eliminating individual adjustments and enabling mass production of reliable RFID tags.

A transmission reception antenna uses a coupling capacitor to amplify signals via magnetic induction.

A power supply coil and booster electrode use a magnetic layer to enhance electromagnetic coupling for extended communication range.

Gyration paths link parallel coil strands on opposite substrate sides, minimizing AC resistance losses in contactless power transfer.

Replacing solder bonding with plating minimizes signal loss while embedding the antenna in insulating layers.

Ferrite cores and glass encapsulation enable transponders to survive 150°C manufacturing heat without failure, ensuring reliable data storage.

Spatially varying magnetic permeability in the antenna structure extends operational frequency range while maintaining high gain-bandwidth product performance.

A planar conductive pattern generates a magnetic field to enable magnetic stripe terminal compatibility in thin electronic devices.

Segmenting transmission-reception chips into distinct near and far-field units reduces device form factor while maintaining communication distance.

A rotationally polarized omnidirectional antenna uses an isoimpedance magnetodielectric layer to achieve broadband loading.

A switchable coil array antenna connects multiple coils dynamically to optimize signal reception across varying frequencies.

Angled floor channels absorb wire tension orthogonally, resolving labor bottlenecks in automated winding of tilted antenna assemblies.

A metal terminal neck part with a narrowed width absorbs thermal expansion stress from the resin body.

A communication module integrates a loop antenna, modulation circuit, and impedance matching circuit inside the carrier.

A conductive coil winds around a metal plate to generate magnetic flux for signal transmission in compact electronic devices.

Merging NFC and Bluetooth antennas reduces device complexity while enabling multi-frequency communication in sealed smart ring chargers.

Directional modulation encodes motion data into inductive signals, reducing system complexity and cost.

Vertical antenna separation eliminates ferrite shielding needs, reducing electromagnetic interference and device size.

A protective cover shields the NFC coil element from metal components, suppressing impedance changes and maintaining receiving sensitivity.

Ferrite sheet antenna module with directly formed conductive patterns and plating layers for portable terminals.

A bent loop coil antenna paired with a magnetic sheet manages flux to maintain communication in narrow spaces.

A dual frequency RFID reader antenna nests a low frequency coil on a ferrite former within a high frequency planar element.

A hearing aid antenna uses a planar ferrimagnetic shield to extend magnetic field lines for efficient radio communication.

A hearing aid module merges a charging conductor loop with a radio conductor loop inside a single housing.

A guided surface waveguide probe synthesizes a wave front at a complex Brewster angle to excite electric fields that couple into a guided surface wave mode.

Merging a coil antenna with a planar conductor directs magnetic flux, reducing occupied area while maintaining communication distance.

A bar antenna coil uses a protective bobbin to distribute thermal stress and maintain inductance stability.

Segmenting the bobbin and core reduces processing difficulty while maintaining stable inductance in compact designs.

An antenna module uses interlayer magnetic parts to form a field for efficient communication.

Core recesses increase contact area and resistance, resolving insufficient fixing strength in insert molded magnetic elements.

A loop antenna device incorporates a series-connected coil pattern to extend communication range.

A flexible polymer printed circuit substrate antenna wraps around a mobile device case to enable near field communication across various orientations.

A vehicle key unit positions communication units across a controller to minimize electromagnetic interference.

An embedded NFC antenna system uses a coil and magnetic sheet to generate an external magnetic field through a metallic enclosure.

A skewed antenna coil arrangement enhances electromagnetic coupling with a feed coil.