Using Software Defined Radio to Interrogate a Passive Frequency Doubling Chip
Conference Year
January 2019
Abstract
The use of embedded sensing has increased significantly in recent years with the growth of the Internet of Things and the desire for flexible, robust sensing systems. Often times the sensing device (or node) will operate at very low power, allowing it to stay where it was deployed for long periods of time without maintenance. For some harsher applications, having a battery in your sensor node is not ideal since batteries cannot perform in extreme temperatures or pressures. Passive wireless sensing technologies, such as micro-electro-mechanical systems (MEMS), surface acoustic wave (SAW), and radio frequency identification (RFID) offer a distinct advantage over typical wireless sensors, as they do not need batteries, and can be interrogated remotely. In this work, an interrogator is designed to leverage a similar chip, known as a frequency doubling reflectenna (FDR). The FDR receives a signal at frequency f1, and transmits a signal at frequency 2*f1.
Primary Faculty Mentor Name
Jeff Frolik
Status
Undergraduate
Student College
College of Engineering and Mathematical Sciences
Program/Major
Electrical Engineering
Primary Research Category
Engineering & Physical Sciences
Using Software Defined Radio to Interrogate a Passive Frequency Doubling Chip
The use of embedded sensing has increased significantly in recent years with the growth of the Internet of Things and the desire for flexible, robust sensing systems. Often times the sensing device (or node) will operate at very low power, allowing it to stay where it was deployed for long periods of time without maintenance. For some harsher applications, having a battery in your sensor node is not ideal since batteries cannot perform in extreme temperatures or pressures. Passive wireless sensing technologies, such as micro-electro-mechanical systems (MEMS), surface acoustic wave (SAW), and radio frequency identification (RFID) offer a distinct advantage over typical wireless sensors, as they do not need batteries, and can be interrogated remotely. In this work, an interrogator is designed to leverage a similar chip, known as a frequency doubling reflectenna (FDR). The FDR receives a signal at frequency f1, and transmits a signal at frequency 2*f1.