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Impact of Beamforming on the Path Connectivity in Cognitive Radio Ad Hoc Networks

ABSTRACT

This paper investigates the impact of using directional antennas and beamforming schemes on the connectivity of cognitive radio ad hoc networks (CRAHNs). Specifically, considering that secondary users use two kinds of directional antennas, i.e., Continue reading

First Results of Field Absolute Calibration of the GPS Receiver Antenna at Wuhan University

ABSTRACT

GNSS receiver antenna phase center variations (PCVs), which arise from the non-spherical phase response of GNSS signals have to be well corrected for high-precision GNSS applications. Without using a precise antenna phase center Continue reading

A CSRR-Fed SIW Cavity-Backed Fractal Patch Antenna for Wireless Energy Harvesting and Communication

ABSTRACT

This paper presents a novel compact dual-band and dual-polarized complementary split-ring resonator (CSRR)-fed substrate-integrated waveguide (SIW) cavity-backed fractal patch antenna for wireless energy harvesting and communication. The proposed Continue reading

A Structured ASIC Approach to a Radiation Hardened by Design Digital Single Side band Modulator for Digital Radio Frequency Memories

ABSTRACT

Digital Radio Frequency Memories (DRFM) are widely used as modules in digital signal processing. These modules can provide several forms of signal manipulation and storage capabilities. With single event effects caused by environmental radiation the Continue reading