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THT01: Phasor Review

Posted on February 19, 2018 Written by Gregory Durgin

I had fantastic electrical engineering teachers at Virginia Tech (my alma mater for BSEE,  MSEE, and PhD).  However, I consciously constructed this Georgia Tech lecture thinking, “This is the way I wish I had been taught Phasors.”

Filed Under: Education

Sending Waves Back Where They Came

Posted on February 16, 2018 Written by Gregory Durgin

A Multi-modulation Retrodirective Feed Network for Backscatter Communications

Mohammad Alhassoun, Francesco Amato, Gregory D. Durgin
2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)

This paper presents a new device for implementing a retrodirective backscatter modulator — an antenna + RF structure that reflects microwaves back to their source, while also adding information.  The technique is extremely flexible and low-power, although only practical at microwave bands when the wavelength becomes several centimeters or shorter.

Filed Under: Backscatter Radio, Publication

What are (EM) People Watching on YouTube?

Posted on February 14, 2018 Written by Gregory Durgin

Curious what the crowds watch over on YouTube?  Me neither.  I can share what the average profdurgin watcher looks at over on the group’s EM channel, though.  Below is a rank-ordered list of the top 25 videos by watch time among the EM lectures, based on lifetime video statistics. [Read more…]

Filed Under: Education

Long-Range Backscatter with Tunnel Diodes

Posted on February 12, 2018 Written by Gregory Durgin

RFID Backscattering in Long-Range Scenarios

Francesco Amato, Hakki Mert Torun, Gregory D. Durgin. IEEE Transactions on Wireless Communications.

This paper contains the designs for Francesco Amato’s tunnel diode modulator and some of the record-beating range measurements that resulted from his PhD work (5.8 GHz backscatter at up to 1.2 km).  Of particular interest is the characterization of the irregular link-budget that results from these highly nonlinear devices.

Filed Under: Backscatter Radio, Publication

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Conference Watch

IEEE RFID 2021 (hybrid)
27-29 April 2021, Phoenix, AZ
Submission Deadline:  2 February 2021

IEEE IMS 2021 (hybrid)
6-11 June 2021, Atlanta, GA
Submission Deadline: 15 Dec 2021

IEEE ICC 2021
14-18 June 2021, Montreal, Canada
Submission Deadline:  20 Jan 2021

IEEE APS 2021
10-16 July 2021, Singapore
Submission Deadline:  15 Jan 2021

IEEE RFID-TA 2021
September 2021, Aveiro, Portugal
Submission Deadline:  June 2021

IEEE WiSEE 2021
10-12 October 2021, Cleveland, OH
Submission Deadline:  1 July 2021

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