| 摘要 |
When illuminated with a plane wave (16) a variable cross-coupling partial reflector (10) reflects a specific amount of a cross-polarized field (18) and a specific amount of a co-polarized field (120) and transmits the remaining power with low attenuation. This is achieved with a pair of frequency selective surfaces (FSS) (12,14) that are rotated with respect to the incident plane wave. The FSSs can be fixed with a given alignment for a particular application or a tuning mechanism can be provided to independently rotate the surfaces and adapt the reflected co- and cross-polarized fields to changing requirements. Of particular interest is the ability to provide a specific amount of cross-polarized reflected power while reflecting no co-polarized field over a certain range of wavelengths. This will be useful to increase power efficiency in, for example, wave power sources that utilize quasi-optical power by causing oscillations in reflection amplifier arrays. |
