Featured Publications

1. Transient EM/Circuit Co-Simulation In XFdtd: A Closer Look At TVS Diodes For ESD Protection 6/9/2021

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

2. Indoor Connected Home Remote Camera Performance Analysis With XFdtd 4/21/2021

   This example discusses the performance, as simulated by XFdtd EM Simulation Software, of a generic remote camera that provides video surveillance around the house for security monitoring.

3. Analysis Of A Terahertz Dual-Band, Dielectric-Loaded Horn Antenna 4/16/2021

   In this example, a design is evaluated with XFdtd EM Simulation Software, using a conical horn to radiate a lower frequency band at 94 GHz with a tapered dielectric strip to carry the higher band of 340 GHz. The dual-band horn design shows good performance at both frequencies with high gain, symmetrical beams and low sidelobes.

4. XFdtd Simulation Of A Millimeter Wave, Wideband Dielectric Resonator Antenna 3/5/2021

   Dielectric resonator antennas (DRAs) are a good choice for millimeter wave applications due to their low loss and high efficiency.  Designing the resonator for a fundamental mode can be complex due to the small size and sensitivity of the resonator to fabrication errors.  In this example, a larger cylindrical dielectric resonator is simulated in XFdtd to show how the excitation of the higher order modes HEM113 and HEM115 can be used to produce wide bandwidth and good gain performance. 

5. EM Simulation Of Dual-Band and Wideband Dual-Polarized Cylindrical Dielectric Resonator Antennas For WLAN 3/1/2021

   Dielectric resonator antennas have numerous characteristics that make them useful, including low loss, high efficiency, and compact size. This example demonstrates how XFdtd analyzes two similar cylindrical dielectric resonator antennas (DRA) which have been developed for dual-polarization performance for different bands. The first antenna is dual-band for covering DCS (1.71-1.88 GHz) and WLAN (2.4-2.48 GHz) bands. The second design is wideband covering the WLAN and parts of the WiMAX band (up to 2.69 GHz).

6. XFdtd Simulation Of A mmWave On-Chip Cylindrical Dielectric Resonator Antenna For WPAN 3/1/2021

   This example demonstrates how XFdtd simulates a 60 GHz cylindrical dielectric resonator antenna that is constructed on a silicon base to emulate on-chip designs. The antenna could be used for a wireless personal area network (WPAN), which would provide communication in the immediate vicinity of a user’s workspace. The antenna has a peak gain of about 2.5 dBi, a bandwidth of over 2.5 GHz, and positive gain of about +/- 55 degrees off boresight.

7. Dual Band Circularly Polarized Dielectric Resonator Antenna For Satellite Communication 1/21/2021

   In this example, a circularly polarized dielectric resonator antenna intended for use as part of a compass navigation satellite system (CNSS) is simulated in XFdtd to generate return loss, gain patterns, broadside gain versus frequency, and axial ratio.

8. Indoor Connected Home Smart Speaker WiFi Router Performance Analysis Using XFdtd 10/28/2020

   In this example, Remcom uses XFdtd to demonstrate the performance of a MU-MIMO WiFi routerwith antenna arrays for 2.4, 5, and 6-7 GHz ranges. The maximum coverage possible with different antenna array combinations is discussed to demonstrate the performance capabilities of the device.

9. XFdtd Analyzes Complex Beam Steering Antenna Arrays 9/1/2020

   In this article, Remcom demonstrates how XF’s superposition and array optimization features simplify the process for understanding device performance by providing efficient ways to validate array coverage.

10. Providing Narrowband IoT Coverage With Low Earth Orbit Satellites 1/21/2020

    This 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.