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  2. Ansys HFSS - Wikipedia

    en.wikipedia.org/wiki/Ansys_HFSS

    Ansys HFSS (high-frequency structure simulator) is a commercial finite element method solver for electromagnetic (EM) structures from Ansys. [ 1 ] Engineers use Ansys HFSS primarily to design and simulate high-speed, high-frequency electronics in radar systems, communication systems, satellites, ADAS, microchips, printed circuit boards, IoT ...

  3. Comparison of EM simulation software - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_EM...

    Ansys HFSS: commercial Yes Yes Yes Yes Yes Automatic adaptive FEM, FDTD, PO, Hybrid FEBI, MoM, and Eigenmode expansion (EME). For antenna/filter/IC packages, Radome, RFIC, MMIC, Antenna Placement, Waveguide (radio frequency), EMI, Frequency selective surfaces (FSS), Electromagnetic metamaterials, Composite Material, RCS-Mono and Bi development ...

  4. Antenna gain-to-noise-temperature - Wikipedia

    en.wikipedia.org/wiki/Antenna_gain-to-noise...

    A parameter often encountered in specification sheets for antennas that operate in certain environments is the ratio of gain of the antenna divided by the antenna temperature (or system temperature if a receiver is specified). This parameter is written as G/T, and has units of dB·K −1. G/T Calculation. G/T is the figure of merit for a ...

  5. Noise temperature (antenna) - Wikipedia

    en.wikipedia.org/wiki/Noise_temperature_(antenna)

    and is the logarithmic gain of the antenna in decibels. The antenna noise temperature depends on antenna coupling to all noise sources in its environment as well as on noise generated within the antenna. That is, in a directional antenna, the portion of the noise source that the antenna's main and side lobes intersect contribute proportionally.

  6. Numerical Electromagnetics Code - Wikipedia

    en.wikipedia.org/wiki/Numerical_Electromagnetics...

    The output indicates that the antenna has a maximum gain of 9.75 dBi, a little over three times the gain of an isotropic antenna. However, as the signal moves even five degrees to the side, this has dropped to 9.5. When you reach 75 degrees off the front, the antenna begins to have negative gain.

  7. Gain (antenna) - Wikipedia

    en.wikipedia.org/wiki/Gain_(antenna)

    When considering an antenna's directional pattern, gain with respect to a dipole does not imply a comparison of that antenna's gain in each direction to a dipole's gain in that direction. Rather, it is a comparison between the antenna's gain in each direction to the peak gain of the dipole (1.64). In any direction, therefore, such numbers are 2 ...

  8. Ruze's equation - Wikipedia

    en.wikipedia.org/wiki/Ruze's_Equation

    Ruze's equation is an equation relating the gain of an antenna to the root mean square (RMS) of the antenna's random surface errors. The equation was originally developed for parabolic reflector antennas, and later extended to phased arrays. The equation is named after John Ruze, who introduced the equation in a paper he wrote in 1952. [1]

  9. Friis transmission equation - Wikipedia

    en.wikipedia.org/wiki/Friis_transmission_equation

    Friis' original idea behind his transmission formula was to dispense with the usage of directivity or gain when describing antenna performance. In their place is the descriptor of antenna capture area as one of two important parts of the transmission formula that characterizes the behavior of a free-space radio circuit.