In this paper, we describe a compact, wideband (70-3000 MHz), and high-gain antenna
technology that can replace multiple types of antennas currently in use to cover the wide …

Modern millimeter-wave (mmWave) communication systems for large indoor areas and most
outdoor scenarios require high-gain antennas with beam-steering ability to support user …

A wide-coverage unmanned aerial vehicle (UAV) antenna system for air-to-ground
communications is proposed in this paper. The proposed antenna system has …

Unmanned aerial vehicle (UAV) antenna tracking system is an electromechanical
component designed to track and steer the signal beams from the ground control station …

A directional antenna can bring benefits in terms of power consumption, spatial reuse, etc.
To exploit the advantage of directional antennas and improve the transmission throughput …

Recently, demands on civilian UAV (unmanned aerial vehicle) has been increasing and
appropriate communication system is being required for the UAV environment. In this paper …

We address deafness and directional hidden terminal problem that occur when MAC
protocols are designed for directional antenna based wireless multi-hop networks. Deafness …

Applying directional antennas in wireless ad hoc networks offers numerous benefits, such as
extended communication range, increased spatial reuse, improved capacity and …

Communication during emergency situations is crucial to saving lives. Rescue workers at an
emergency scene need to be able to coordinate and communicate effectively. Despite the …

Signal fading at 836 Mc on a mobile radio transmission path using directional antennas on
the mobile unit was investigated and compared with that from an omnidirectional antenna. A …