MICROWAVE RESONANT SENSOR HAVING PERPENDICULAR FEED AND IMAGING SYSTEM
- Detailed Technology Description
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- Others
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- *Abstract
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Background:Non-destructive, real-time imaging known in the art uses electromagnetic radiation to detect properties of an object under inspection. Generally, an electromagnetic field source illuminates the object and an array of sensor elements receives the electric field scattered by the object. Each sensor signal typically requires separate pickup circuitry for discriminating one signal from another. For example, conventional modulated scattering techniques (MST) for imaging use inefficient dipole antennas to sample the field and, thus, are not sufficiently sensitive, particularly for fields at higher frequencies. Switched antenna array techniques for imaging require expensive and bulky radio frequency (RF) circuitry for each pickup antenna to detect the electromagnetic field from each array element's location. Unfortunately, such conventional switched antenna array imaging does not provide sufficient resolution, particularly at higher frequencies. Moreover, further improvements to enhance signal-to-noise ratio (SNR) are desired.Summary:Imaging systems and methods embodying aspects of the invention provide an array of switched-slot sensors receiving and responsive to microwave and/or millimeter wave electromagnetic radiation. The locations of the sensors in the array define a spatial domain away from an object for detecting an electromagnetic field scattered by the object. Each of the sensors outputs a signal representative of the detected field and the location of the sensor. By decoding the signals, an image of the object can be generated. Aspects of the invention permit high measurement sensitivity, high spatial resolution, real?time operation, portability, and improved SNR.
- *Principal Investigator
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Name: Reza Zoughi, Professor
Department:
Name: Sergiy Kharkivskiy, Res. Assoc Professor
Department:
Name: Mohammad Tayeb Ahmed
Department:
Name: Mohamed AbouKhousa, Graduate Student
Department:
- Country/Region
- USA
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