# Antenna and Array Analysis

Port, surface, and field analysis; embedded pattern, pattern multiplication

Perform port, surface, and field (space around the antenna) analysis of antennas and arrays. Use plane waves to excite an antenna to simulate a receiving antenna. Use Antenna Toolbox™ functions to read and write data from MSI Planet antenna files. Design and tune geometric properties of antennas in the antenna catalog to resonate at a particular frequency.

## Objects

 `planeWaveExcitation` Create plane wave excitation environment for antennas, arrays, planar structures or 3-D structures

## Functions

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 `bandwidth` Calculate and/or plot absolute bandwidth of antenna (Since R2024a) `efficiency` Radiation efficiency of antenna (Since R2021a) `feedCurrent` Calculate current at feed for antenna or array `impedance` Input impedance of antenna or scan impedance of array `resonantFrequency` Calculate and/or plot resonant frequency of antenna (Since R2024a) `returnLoss` Return loss of antenna or scan return loss of array `sparameters` Calculate S-parameters for antennas and antenna arrays `vswr` Voltage standing wave ratio (VSWR) of antenna or array element
 `pattern` Plot radiation pattern and phase of antenna or array or embedded pattern of antenna element in array `patternAzimuth` Azimuth plane radiation pattern of antenna or array `patternElevation` Elevation plane radiation pattern of antenna or array `beamwidth` Beamwidth of antenna `EHfields` Electric and magnetic fields of antennas or embedded electric and magnetic fields of antenna element in arrays `axialRatio` Calculate and/or plot axial ratio of antenna or array `phaseShift` Calculate phase shift values for arrays or multi-feed PCB stack `rcs` Calculate and plot monostatic and bistatic radar cross section (RCS) of platform, antenna, or array (Since R2019b) `doa` Direction of arrival of signal (Since R2022a)
 `charge` Charge distribution on antenna or array surface `current` Current distribution on antenna or array surface
 `patternMultiply` Radiation pattern of array using pattern multiplication `arrayFactor` Array factor in dB
 `correlation` Correlation coefficient between two antennas in array `sparameters` Calculate S-parameters for antennas and antenna arrays `pattern` Plot radiation pattern and phase of antenna or array or embedded pattern of antenna element in array