Abstract: Tunable duplexers based on self-interference cancellation present a promising alternative to fixed-frequency duplexers (e.g., surface acoustic wave devices), however the level of transmit-to ...

Forests and other habitats are cut down to create pasture for the cattle as a result of its unsustainable growth. This problem is not confined to the United States. In many countries experiencing ...

Abstract: To further protect frequency-hopping (FH) systems against severe wiretapping, an architecture of artificial noise (AN) shielded FH systems (ANS-FH) is proposed, wherein an AN cancellation ...