PHASED-ARRAY NEAR FIELD RADIOMETRY FOR BRAIN INTRACRANIAL APPLICATIONS

Phased Array Excitations for Efficient Near-field Wireless Power Transmission

Phased array antenna using MEMS phase shifter

This article presents a phased array antenna employing MEMS phase shifter. The proposed phased array antenna consists of eight square patch antennas operating at 10.4 GHz with a bandwidth of 400 MHz. Feed line for each patch passes through a MEMS phase shifter realized by a series of bridges above the transmission line. The distance between the bridge and the transmission line underneath it is ...

Image combination for high-field phased-array MRI

We consider signal processing methods for phased-array magnetic resonance imaging (MRI). A theoretical description of a phasedarray MRI data model is presented and three image reconstruction algorithms are proposed to estimate the effective image pixels. An analysis is provided to show how the new algorithms compare to conventional reconstruction methods.

Instability waves in a subsonic round jet detected using a near-field phased microphone array

We propose a diagnostic technique to detect instability waves in a subsonic round jet using a phased microphone array. The detection algorithm is analogous to the beamforming technique, which is typically used with a far-field microphone array to localize noise sources. By replacing the reference solutions used in the conventional beamforming with eigenfunctions from linear stability analysis, ...

Sparse Phased Array Antenna Architectures for 3D-SAR Applications

We discuss sparse phased array antenna architectures by the use of multiple transmit antenna positions in order to reduce the number of needed receiver channels. We also present a compact array architecture where the synthetic array antenna size is doubled without increasing the physical array size significantly. We compare sparse arrays of 10, 20, 40 and 80 receiver positions respectively (tog...