| 摘要 |
A method (10) of metering a multi-phase composition in a pipe (100) using patch antenna(s) (30), that operate in a radio or microwave frequency range, is disclosed including locating and exciting the patch antenna(s) (30) over a range of frequencies (14); measuring transmitted and reflected signals over time (16); estimating a shift in a resonant frequency from a baseline resonant frequency (18); then calculating a permittivity of the composition (20), based on the shift; and calculating a phase composition of the multi-phase composition (22). |
