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  • Optimizing an LTE Antenna's Matching Network
    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 matching network are chosen so that system efficiency is maximized.
  • Matching circuit optimization for antenna applications
    Impedance matching is an essential part of antenna design. The input impedance of an antenna needs to be reasonably close to the amplifier impedance (e.g. 50 Ohm), otherwise the signal is reflected back to the amplifier and not radiated by the antenna.
  • DVB Antenna Design and Matching with Antenna Magus, Optenni Lab and FEKO
    An antenna is designed for VHF and UHF DVB operation using Antenna Magus, a matching network is designed in Optenni Lab and the full combination simulated in FEKO.
  • Matching Network Design for GPS/Bluetooth Antenna
    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 wave simulations are needed to determine the final LC values. This application note demonstrates how
  • Solving FM Antenna Design Challenges in Portable Devices (.pdf)
    FM radio has witnessed an explosion of interest from the market for its applications in mobile and personal media players; however, the traditional FM design approach requires a long antenna, such as a wired headphone, which limits its usefulness and usability. This white paper provides
  • Matching Small Loop Antennas to rfPIC(TM) Devices
    In close proximity to the human body, small loop antennas outperform small dipole and monopole antennas [1]. Their size, robustness and low manufacturing cost have made small loops the most popular antenna for use in miniature key fob transmitters. A small loop antenna typically consists
  • Overview of XFdtd's Circuit Element Optimizer
    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 utilizes full wave analysis to select the component values for a given printed circuit board (PCB
  • Circuit Ideas: Setting Up a Low-Power Transceiver
    is available on pin DIO, a synchronized data clock signal at DCLK. Values for the antenna matching network components C41, L41, and C42 shown here are for operation at 315 MHz using a quarter- wave whip antenna. Of course, antenna VSWR will affect these values, and they must be recalculated when using

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