A novel symmetric anchor-shaped active frequency selective surface (AFSS) with a wide tuning frequency range is proposed. Varactor diodes are used as the active tuning components at the center of each ...

In order to maximize power density, the resonant frequency of an energy harvester should be equal to the source excitation frequency and the electrical damping set equal to the parasitic damping.

Frequency Electronics is listed on the CBOE trading with ticker code FEIM.US. It has a market capitalisation of $204.17m, with approximately 9.68m shares in issue. Over the last year, Frequency ...