Antenna Engineering |
Common terms and phrases
admittance amplitude angle antenna structure antenna system antenna under test aperture approximation array factor axis balun beam Bessel function biconical antenna calculated characteristic impedance Chebyshev Chebyshev polynomial circuit coefficients component constant coordinate current distribution determined directive gain distance e-ißr effective electric field element currents employed end-fire equation example excited field produced field strength formula frequency ground indicated in Fig input impedance integral length linear array load lobes log-periodic dipole loop magnetic current maximum Maxwell's equations measurement monopole monopole antennas noise obtained ohms output phase shift plane polarization polynomial problem quantity radiation efficiency radiation pattern radiation resistance ratio reactance receiving antenna reflector region result side-lobe level signal slot antenna solution spacing spherical ẞd surface temperature terminals Trans transmission line transmission-line uniform values variable vector potential visible range voltage wave waveguide wavelength wire zero Απγ