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Opportunity at Air Force Research Laboratory (AFRL)

Multichannel Radio Frequency Sensor Processing

Location

Sensors Directorate, RY/Electromagnetics Technology Division

RO# Location
13.35.01.B6351 Wright-Patterson AFB, OH 454337542

Advisers

Name E-mail Phone
Hary, Stephen L. stephen.hary@us.af.mil 937.713.8727

Description

We develop radio frequency sensor processing devices, architectures, and techniques. The use of multiple channels on transmit and receive enables multiple Degrees of Freedom (DOF) processing and Digital Beam-Forming (DBF). The ability to reconfigure the transfer function characteristics of the RF electronics enables multifunction operations. Research interests fall into the following categories:

(1) Novel multichannel architectures. The goal is to achieve broad spatial and frequency coverage utilizing multiple simultaneous beams. Architectures should be scalable in number of channels and capability (number of beams, bandwidth coverage).

(2) Sensor signal processing techniques. We are particularly interested in techniques that reduce the per-channel computational requirements, DBF processing requirements, and DOF reduction processing requirements for wide instantaneous bandwidth systems. We are also interested in performance versus cost tradeoffs for adaptive and non-adaptive techniques.

(3) Software compensation schemes. Many multichannel signal processing techniques assume perfectly matched hardware channels. It is desirable to have digital/software compensation schemes that correct for mismatches, or to develop processing techniques that are impervious to channel mismatch. We are interested in research in compensation schemes for RF (Amplifiers, Filters…) , Analog (Amplifiers, Mixers, transmission lines), and mixed signal (Analog-to-digital Converter) component non-linearity, as well as inherently robust processing algorithms.

(4) Reconfigurable RF components and architectures. A reconfigurable RF Architecture is one that can perform diverse RF functions and is capable of optimizing performance parameters of a given function. These agile architectures are enabled by reconfigurable electronic components such as tunable matching networks, tunable filters (bandpass and notch), variable gain amplifiers, high tuning range signal sources, low loss/high isolation RF switches, etc. We are seeking novel research into Reconfigurable RF architectures, devices and control mechanisms.

 

Keywords:
Digital receivers; Waveform generation; Digital beam forming; Radio frequency signal processing; reconfigurable RF electronics; Sensor processing;

Eligibility

Citizenship:  Open to U.S. citizens and permanent residents
Level:  Open to Postdoctoral and Senior applicants
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