Phased-array antennas are known for their capability to electronically steer a beam with
high effectiveness, but beam steering is fixed in an angle for all range cells. This paper …

We propose a spatial multiplexing system using reconfigurable cavity-backed metasurface
antennas. The metasurface antennas consist of a printed cavity with dynamically tunable …

Frequency diverse array (FDA) produces an angle range dependent and time-varying
transmit beampattern due to the small frequency increment across its array elements, which …

Multifunctional and reconfigurable multiple-input multiple-output (MR-MIMO) antennas are
capable of dynamically changing the operation frequencies, polarizations, and radiation …

Secret key generation based on channel measurements has emerged as a meaningful
approach to enhance the security of wireless links. The key generation mechanism takes …

When establishing secret encryption keys using estimates of the reciprocal wireless
channel, the number of key bits that can be generated for a static or slowly varying …

In this work, we investigate a physical-layer key reconciliation protocol for a reciprocal, flat
fading channel between two legitimate users. We consider the scenario when the n bits of …

For physical-layer security, key reconciliation procedures are needed to correct key
differences that can arise as a consequence of independent noise at the two ends of a …

Physical layer approaches for generating secret encryption keys for wireless systems using
channel information has attracted increased interest from researchers in recent years. This …

A novel 2‐D beam steering technology using a Fabry–Pérot antenna with a liquid‐based
reconfigurable metasurface is presented. The antenna employs a reconfigurable partially …