Smart microwave window

Smart skins are to be considered in the context of radar absorbing materials where solutions have been given in [113,114]. Smart microwave windows have been proposed in the context of using poly(aniline)-silver-polymer electrolyte composite materials which have shown a change in microwave reflectivity when a small electrical dc potential is applied among them [115]. An adaptive radar absorbing structure based on the topology of a Salisbury screen combined with an active frequency selective surface controlled by PIN diodes has been described in [116] which allows for superior reflectivity-bandwidth. 

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