#antenna array

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The hacking technique uses a set of multiple connected antennas, known as an antenna array, to remotely tap and swipe a touchscreen through electromagnetic signals. Feb 8, 2023.

New 'invisible finger' technology poses potential phone ...

University of Floridahttps://news.ufl.edu › 2023/02 › invisible-finger-phone...

Attackers Can Use Electromagnetic Signals to Control Touchscreens Remotely

The Hacker Newshttps://thehackernews.com › Cybersecurity News

North side of Engineering Building facing Washington Street, the University of Iowa, 1940s?

Photographer: Kent, Frederick W.

Project Cyclops antenna array.

Updated notes for ece1229 antenna theory

I’ve now posted a first update of my notes for the antenna theory course that I am taking this term at UofT.

Unlike most of the other classes I have taken, I am not attempting to take comprehensive notes for this class. The class is taught on slides which go by faster than I can easily take notes for (and some of which match the textbook closely). In class I have annotated my copy of textbook…

Antenna array design with Chebychev polynomials

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Prof. Eleftheriades desribed a Chebychev antenna array design method that looks different than the one of the text [1].

Portions of that procedure are like that of the text. For example, if a side lobe level of \( 20 \log_{10} R \) is desired, a scaling factor

\begin{equation}\label{eqn:chebychevSecondMethod:20} x_0 = \cosh\lr{ \inv{m}…

Chebychev antenna array design

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In our text [1] is a design procedure that applies Chebychev polynomials to the selection of current magnitudes for an evenly spaced array of identical antennas placed along the z-axis.

For an even number \( 2 M \) of identical antennas placed at positions \( \Br_m = (d/2) \lr{2 m -1} \Be_3 \), the array factor is

\begin{equation}\label{eq…