| 摘要 |
PURPOSE:To establish the micro wave object position detector, eliminating mis- detection due to unnecessary reflected microwaves, by utilizing circular polarized waves. CONSTITUTION:The straight line polarized waves from the microwave oscillator OS is converted into circular polarized wave with the circular polarized wave generators CG and radiated from the transmission antenna AN1. At the reception side, the straight line polarized generator DG converting the circular polarized wave into the straight line polarized wave is inserted between the reception antenna AN2 and the detector DE. The waves directly propagated from the transmission antenna AN1 to the reception antenna AN2 have the direction of revolution which is radiated from the transmission antenna AN1, but the reflected waves from the object 1 have opposite direction. Since the direction of polarization is different for the direct and reflected waves for the straight line converted, the coupling between DG and DE is constituted so that only the staright line polarized waves can pass through, then allowing to give the microwave energy of direct waves to DE. |
