Voltage standing wave ratio of antenna
vswrant = vswr(antenna,frequency,z0)
Plot vswr (voltage standing wave ratio) of a circular loop antenna.
h = loopCircular; vswr(h,50e6:1e6:100e6,50)
Calculate vswr (voltage standing wave ratio) of a helix antenna.
h = helix; hvswr = vswr(h,2e9:1e9:4e9,50)
hvswr = 1×3 3.5730 6.7043 3.3598
antenna— Antenna object
Antenna object, specified as a scalar handle.
frequency— Frequency range used to calculate VSWR
Frequency range used to calculate VSWR, specified as a vector in Hz. The minimum value of frequency must be 1 kHz.
z0— Reference impedance
Reference impedance, specified as a scalar in dB.
vswrant— Voltage standing wave ratio
Voltage standing wave ratio, returned as a vector in dB.