Event
Ph.D. Dissertation Defense: Jooik Chung
Friday, April 9, 2021
10:00 a.m.
https://umd.zoom.us/j/8126645322
Maria Hoo
301 405 3681
mch@umd.edu
ANNOUNCEMENT: Remote PhD Dissertation Defense
Name: Jooik Chung
Committee:
Professor Agis Iliadis (Chair)
Professor Kevin Daniels
Professor Robert Newcomb
Professor Alireza Khaligh
Professor Aris Christou, Dean's Representative
Date/time: Friday, April 9 2021 at 10:00 AM
Location: Zoom Meeting meeting link:
https://umd.zoom.us/j/8126645322
Title: A Novel IC CMOS Sensor for Remote RF Signal Sensing
Abstract:
This dissertation explores the development of an RF sensor IC chip capable of tracking the directionality of RF remote emissions. The IC design uses an angle-of-arrival algorithm, and it is designed for the 180 nm CMOS technology, and also applicable to other technologies. The sensor chip requires two pairs of antennas aligned and placed at distance s for detection of azimuthal and polar angles of the RF incident wave. The circuit consists of custom designed low-noise amplifiers (LNAs) at the front-end, with a novel design of double-balanced Gilbert cell mixers (GCMs). This amplifies and mixes the signals from the antennas and converts the phase difference into an equivalent output voltage map suitable for an 18-bit analog-to-digital converter. Systematic optimization techniques were developed to maximize the third-order intercept point, and suppress flicker noise for the LNAs and GCMs, resulting in improved sensing accuracy. The overall system-level evaluation results showed state-of-art angle-of-arrival sensing capability with an upper limit error of 3.447°.
