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This simple tutorial illustrates the concepts of antenna gain, the dB, and the dBi terms. You can understand it all with no math !
- Return Loss & VSWR
As you can see, higher return losses mean more power into...
- Gallery
This antenna test service example features full “vector”...
- 1D, 2D, 3D Or 4-Dimensional
We always recommend 3D patterns, unless your antenna is...
- nanoVNA-V2
So Antenna Test Lab bought up some of the nanoVNA-V2’s,...
- Consumer Antennas
Test results (dBi gain and patterns) of interesting publicly...
- 3D Plotting Software
We have partnered with Arie Voors, the author of the very...
- Return Loss & VSWR
4 lut 2024 · The gain of an antenna is expressed as a ratio relative to the reference antenna, and this ratio is expressed in dBi. Since dBi is a logarithmic unit, a 3 dBi antenna will have twice the power of a 0 dBi antenna, and a 6 dBi antenna will have four times the power of a 0 dBi antenna.
19 lis 2024 · Do you want to install the Data Analysis Toolpak add-in for Excel? The Analysis Toolpak is an Excel add-in that provides a range of analysis features. It includes tools for regression analysis, correlation, covariance, and many other statistical calculations.
Antenna gain measures radiation efficiency and the ability of an antenna to direct signals in a particular direction. It is used in radio and television broadcasting and satellite communications. The higher the antenna gain, the more focused the signal will be in a particular direction.
25 wrz 2024 · This tool computes the Antenna Gain in dBi using: Antenna Factor (units: dB/m) Frequency of operation (units: Hz/kHz/MHz/GHz)
If an antenna is designed to operate across a range of frequencies (a wideband antenna), its gain will vary depending on the frequency. The antenna’s spec sheet will provide a gain figure in dBi for a given frequency; that number is usually the antenna’s maximum (or peak) gain in its most efficient direction. 4
Here’s the key distinction: dBi compares the gain to an isotropic antenna, a ‘theoretical’ antenna that radiates equally omnidirectionally. On the other hand, dB compares the antenna gain to an actual antenna with a specific radiation pattern.
