Читать книгу Antenna-in-Package Technology and Applications - Duixian Liu - Страница 13
Symbols
Оглавление| Ae | effective antenna aperture | |
| c | speed of light | |
| D | directivity | |
| D = max[D(ϑ, ϕ)] | directivity function | |
| η | effciency | |
| unit vector along the r axis | ||
| electric field in space frequency | ||
| f | frequency | |
| G | gain | |
| G = max[G(ϑ, ϕ)] | gain function | |
| Γ | reflection coeffcient | |
| I p | input current antenna | |
| k | coverage factor | |
| L | length of the radiating aperture | |
| λ 0 | wavelength in free space | |
| Mv | measurement value | |
| Pin | input power | |
| Pt | total radiated power | |
| P(ϑ, ϕ) | normalized radiation power | |
| R | radial distance from the antenna | |
| Ra | resistive | |
| RL | radiated losses | |
| Rr | radiated resistance | |
| Rv | reference value | |
| μ sys | system uncertainty | |
| Poynting vector | ||
| V p | input voltage antenna | |
| X a | reactance | |
| Z 0 | characteristic impedance | |
| Z a | input impedance | |
| Z g | generator impedance = Rg |
