Ensuring that all new devices meet regulatory and certification requirements is a necessity.
Remcom's EM simulation tools can greatly speed the design and certification process by allowing realistic simulations of the device performance before the costly prototyping stage. Analysis options are both device-oriented, such as tuning, and bio-interaction related, including SAR. Realistic, posable human body models are available in addition to CAD-based SAM phantom.
Calculation of Biological Effects of Electromagnetic Fields
Bio-Pro is a specialty version of XFdtd that provides accurate predictions of the interaction of electromagnetic fields with biological tissues. Analysis options are both device-oriented, such as tuning, and bio-interaction related, including SAR. Realistic human body models are available in addition to a CAD-based SAM phantom.
Biological Thermal Sensor
XF's enhanced Thermal Sensor allows metals and other non-biological objects to be included in the temperature rise computation. The calculations are based on Penne’s Bio-Heat equation and consider the effects of conductive heat transfer between thermally connected materials, blood perfusion, metabolic processes, and general RF heating.
Other capabilities of XFdtd Bio-Pro include:
- Calculation of Specific Absorption Rate (SAR) including whole body, 1 gram, and 10 gram averages.
- VariPose Mesh Repositioning
- MATLAB® Export Functionality
- Birdcage Tool
- Hearing Aid Compatibility (HAC)
- MR-related Output Types (MR Transmit Efficiency and Approximate MR Image)
An antenna design for hepatic microwave ablation is simulated in a dielectric emulating liver tissue to determine antenna performance, SAR distribution, and thermal response.
A lowpass birdcage coil designed to operate at 64 MHz is simulated to show B fields in both unloaded and loaded conditions. When loaded with a heterogeneous human head model, the temperature rise caused by exposure to the fields of the coil is computed using XFdtd’s biological thermal sensor.
The performance of a basic cellular telephone worn on the hip of a human male is studied for varying positions of the wearer.
Signal propagation of a WiFi transmitter is evaluated in an aircraft interior, with and without passengers present.
This presentation describes the simulation of a hearing instrument (HI) device. The design was simulated in the presence of a homogeneous SAM phantom and an anatomically correct, heterogeneous head model. The simulation results illustrate the differences between the head models and highlight the more acceptable results for improved device safety.
A fast approach is proposed for estimating the thermal responses of biological bodies due to RF exposures. The approach is based on ANN models. The results obtained from the fast approach agree well with those calculated directly from the thermal solver. The advantage is that the approach is fast and is not dependent on the biological body and mesh sizes.
KEC, a UK manufacturer of EMC interconnect components and cable harness assemblies, strengthened its market leadership and differentiated itself from the competition by offering a unique technology. Using Remcom’s XFdtd to model and simulate customers’ designs, KEC can identify problems early in the process and recommend corrections before the EMC certification stage. This enables customers to avoid costly mistakes and pass certification testing on the first try.
When ReGear Life Sciences developed a new therapeutic deep heating garment for the shoulder, they needed to validate that the SAR value complied with all applicable FDA and FCC safety regulations before releasing the product to the market. Remcom performed EM simulations, made recommendations on a safer design, and provided the documentation necessary for ReGear to get approval for the product.