Table 1 Indicator definitions
From: Microwave wireless power transmission technology index system and test evaluation methods
\(P_1\) | Input power of microwave signal source |
\(P_2\) | Output power of microwave signal source (input power of power amplifier) |
\(P_3\) | Output power of power amplifier (input power of transmitting antenna) |
\(P_4\) | Output power of transmitting antenna |
\(P_5\) | Input power of receiving antenna |
\(P_6\) | Output power of receiving antenna (input power of rectifier circuit) |
\(P_7\) | Output power of rectifier antenna |
\(\eta _1\) | Conversion efficiency of microwave signal source |
\(\eta _2\) | Power amplifier conversion efficiency |
\(\eta _3\) | Transmitting antenna conversion efficiency |
\(\eta _4\) | Spatial transmission efficiency |
\(\eta _5\) | Conversion efficiency of receiving antenna |
\(\eta _6\) | Conversion efficiency of rectifier circuit |
D | Transmission distance |
\(\rho\) | Power density, including area power density and weight power density |