Oracle International Corporation

Tesla, Inc.

Shreya Singh

Kenny C Gross

Aleksey M Urmanov

Anand S Konanur

Guang Chao Wang

Matthew T Gerdes

Rishabh Bhandari

Jae Hoon Yoo

Aydin Nabovati

Rui Moreira

Austin Rothschild

Richard Breden

George Zucker

Aycan Erentok

Loic Le Toumelin

Yasutaka Horiki

Nagarjun Bhat

A multi-band antenna system is provided. The antenna system can be placed under and embedded within a glass exterior surface of a vehicle. Such an antenna system can include a capacitively coupled metallic element on or adjacent to the glass exterior surface, which can serve as both a parasitic element to enhance gain and as a heating element to melt snow and/or ice accumulation over the glass area that covers the antenna. In certain applications, the antenna's structure itself can be used as a heater to improve performance in adverse weather conditions while the heating elements are positioned away from the thermally sensitive electronics. The antenna system with integrated heating can include a spiral antenna.

Multi-band antenna

During operation, the system uses N sensors to sample an electromagnetic interference (EMI) signal emitted by a target asset while the target asset is running a periodic workload, wherein each of the N sensors has a sensor sampling frequency f, and wherein the N sensors perform sampling operations in a round-robin ordering with phase offsets between successive samples. During the sampling operations, the system performs phase adjustments among the N sensors to maximize phase offsets between successive sensors in the round-robin ordering. Next, the system combines samples obtained through the N sensors to produce a target EMI signal having an EMI signal sampling frequency F=f&#xd7;N. The system then generates a target EMI fingerprint from the target EMI signal. Finally, the system compares the target EMI fingerprint against a reference EMI fingerprint for the target asset to determine whether the target asset contains any unwanted electronic components.

Combining signals from multiple sensors to facilitate EMI fingerprint characterization of electronic systems

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La Jolla, CA, United States of America

Shreya Singh