Flexible Phased Array Shape Reconstruction

Lightweight, flexible phased arrays enable new applications by dynamically changing shape during deployment and operation. However, these shape changes must be tracked and accounted for by changing the element excitation in order for the array to continue proper operation. We propose a framework for...

Full description

Saved in:
Bibliographic Details
Main Authors: Mizrahi, Oren S., Fikes, Austin, Hajimiri, Ali
Format: Conference Proceeding
Language:English
Subjects:
Antenna measurements
Array signal processing
Dipole antennas
EDM
Flexible Electronics
Phase measurement
Phased Array
Phased arrays
Shape
Shape measurement
Shape Sensing
Signal Processing
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Lightweight, flexible phased arrays enable new applications by dynamically changing shape during deployment and operation. However, these shape changes must be tracked and accounted for by changing the element excitation in order for the array to continue proper operation. We propose a framework for reconstructing the shape of a flexible phased array using only measurements of mutual coupling between the antennas in the array. The framework is demonstrated using a passive 2.5 GHz phased array and fixed to 8 different frames of known radii of convex and concave curvature. Our results show the ability to reconstruct shape to within ≈ 0.04λ position error, even in cases where the phased array is bent dramatically, without any advanced knowledge or additional information. The framework is modular and can be easily adapted to other phased array systems with different antennas, frequencies, and physical constraints.
ISSN:2576-7216
DOI:10.1109/IMS19712.2021.9574941