Microwave reflection at an active surface imbedded with fast-ion conductors

The microwave reflection characteristics at a surface of a composite medium composed of thermally controllable, solid-electrolyte-based active zones are studied. These zones are energized (heated) reconfigurably so as to alter their electric conductivity, and hence their reflection/transmission characteristics. Experimental studies at X-band frequencies on a test active surface formed by a two-dimensional array of AgI pellets (fast-ion conductors) imbedded in a dielectric medium are presented. The suitability of the proposed composite medium for broadband applications is indicated