In this paper, we develop a fast and approximate prediction scheme for indoor path loss using digital image processing, geometrical optics and transport theory....

Human blockage at millimeter-wave frequencies is most commonly modeled through Knife-Edge Diffraction (KED) from the edges of the body shaped as a vertical strip. Although extensively validated in...

In this example, a compact Ku-band antenna array is demonstrated for use in mobile device applications. The antenna is tuned for 12.5 GHz operation and contains a 4x4 array of elements which each...

The application of machine learning for optimal deployment of 5G infrastructure, such as the position and the orientation of the antenna that help achieve the best signal coverage, is investigated in...

The safe rollout of new or enhanced 5G services using C-band spectrum near airports in 2022-2023 will require realistic modeling of radio propagation to mitigate potential interference with legacy...

This paper investigates the accuracy of the finite-difference time-domain (FDTD) method for separately estimating coil conductor and radiative loss contributions....

This booklet explores the core numerical methods utilized in Remcom's software products. Remcom's EM analysis products are used for a wide range of applications, requiring a variety of numerical...

This paper explores a use case involving Wireless InSite and its mmWave hybrid beamformer capabilities to transmit data streams to a sedan driving in central Manhattan....

A 140 GHz slot antenna array excited by a substrate integrated cavity is demonstrated for use in wireless communications. The antenna array has high gain, wide bandwidth, low fabrication costs, and...

This paper introduces XFdtd's transient EM/circuit co-simulation capability, which combines the strength of 3D full-wave electromagnetic simulation with the flexibility of circuit solvers....

In this example, we use XFdtd to demonstrate the performance of a MU-MIMO WiFi router with antenna arrays for 2.4, 5, and 6-7 GHz ranges. The maximum coverage possible with different antenna array...

This example demonstrates the performance of a remote camera with two-element antenna arrays for 2.4, 5, and 6 GHz capabilities for 802.11 a/b/g/n/ac/ax. The maximum coverage possible at each...

The following article describes the modeling of a SATCOM link, specifically the use case of using a satellite overlay to extend service continuity to IoT devices in a poorly covered rural area....

A dual-band, dielectric-loaded horn antenna is analyzed with XFdtd to demonstrate performance at 94 and 340 GHz. The antenna consists of a dual port rectangular waveguide section at the feed end that...

A circularly polarized dielectric resonator antenna design is analyzed with XFdtd to determine performance for return loss, gain, and axial ratio. The resulting antenna is intended for use in compass...

Two variations of a cylindrical dielectric resonator antenna are analyzed to determine their performance characteristics. The first antenna is designed for dual-band performance at DCS frequencies...

This simulation of a wearable dual-band MIMO antenna demonstrates a design for dual-band use constructed of textile materials. The performance of the antenna remains acceptable as it is deformed. When...

At higher frequencies, the use of dielectric resonator antennas (DRAs) at fundamental modes can be complicated due to the small size of the resonator and its sensitivity to fabrication errors. In this...

A millimeter wave antenna intended to operate at 60 GHz is designed by placing a cylindrical dielectric resonator on a silicon base for an on-chip design. The antenna produces a uniform, nearly...

As device performance is pushed to new levels by the increasing demands of 5G high frequency systems, the need for more comprehensive analysis tools for complex antenna systems continues to grow....

Significant innovation is taking place in automotive industry around capabilities for advanced driver assistance systems (ADAS). Radar sensors operating at millimeter wave bands are a key technology...

An antenna based on a transverse slotted rectangular waveguide design is realized in a substrate integrated waveguide structure and simulated in XFdtd® EM Simulation Software. The antenna scans...

A 60 GHz antenna array design is simulated in XFdtd to demonstrate suitability for use on wireless Virtual Reality headsets. The antenna array is comprised of elements each containing two patches and...

This example uses XFdtd to simulate the performance of a low cost, chipless RFID system. The RFID tag is comprised of two ultrawide band monopole disk antennas mounted in a cross-polarized...

This example is a more complete device for 28 GHz beamforming for 5G networks and includes an 8x8 patch antenna array, 1 to 8 power dividers and a Rotman lens initial stage. The design of the Rotman...

This example demonstrates how a custom beamforming table can be used to model downlink data rates from three MIMO base stations for 5G New Radio in a section of Boston....

A proposed smartphone design that includes a 4G antenna operating at 860 MHz and a 5G array at 28 GHz is analyzed in XFdtd to determine operating characteristics and any mutual coupling. A brief study...

Series-fed patch elements forming an array are simulated to demonstrate antenna performance and beamforming including S-parameters, gain, and effective isotropic radiated power (EIRP) at 28 GHz. Beam...

An 8x8 planar antenna array creates narrow beams capable of scanning large sectors in front of the antenna. This example focuses on displaying typical simulation results for beams and possible plots...

Performance of a 12-port handset antenna array operating in LTE bands 42/43 (3400-3800 MHz) and band 46 (5150-5925 MHz) is analyzed in XFdtd for varying hand hold positions on the device. The results...

The millimeter wave frequencies being planned for 5G systems pose challenges for channel modeling. At these frequencies, surface roughness impacts wave propagation, causing scatter in non-specular...

With 3GPP expanding the potential transmit antennas for LTE-Advanced Pro eventually to as many as 64, detailed modeling of the channel characteristics is becoming increasingly complex. This...

This presentation demonstrates a multiphysics-based ESD analysis capability in XFdtd which allows the ESD testing process to be analyzed via computer simulation. This will save companies time and...

This paper presents a new predictive capability for simulating massive MIMO antennas and beamforming in dense urban environments. In anticipation of rapid growth in wireless devices and mobile data...

To keep up with rising demand and new technologies, the wireless industry is researching a wide array of solutions for 5G, including Massive MIMO. Remcom's Wireless InSite provides an efficient method...

Full-wave matching circuit optimization (FW-MCO) is a new technology introduced by Remcom, which combines full wave 3D EM simulation and circuit optimization to solve an age-old RF problem:...

A simple antenna for LTE band operation is added to the PC board of a smartphone in XFdtd and the matching circuit is tuned for operation in multiple frequency bands. The component values in the...

Ad hoc peer-to-peer networks can provide reliable communications in emergency situations where fixed infrastructures, like base stations, may not be available. This example demonstrates Wireless...

A single antenna can be used for GPS and Bluetooth applications if a matching network is properly designed. Once the desired matching network topology is determined using a circuit simulator, full...

XFdtd 3D Electromagnetic Simulation Software analyzes antenna and matching circuit structures using the full wave Finite-Difference Time-Domain (FDTD) simulation method. XF's Circuit Element Optimizer...

This whitepaper demonstrates how XFdtd's time-domain EM simulation enables rapid development by allowing engineers to determine the performance of a fully detailed sensor model installed behind a...

XFdtd EM Simulation Software features an enhanced biological thermal sensor, which allows metals and other non-biological objects to be included in the temperature rise computation. This application...