Abstract: A directable antenna system includes at least one directable antenna which has an omnidirectional antenna at a center, an inner frequency selective surface centered around the omnidirectional antenna, and an outer frequency selective surface spaced from the inner frequency selective surface. An antenna control unit can vary antenna beamwidth by changing states of active elements of the inner and the outer frequency selective surfaces. The system may include a searchable database, for example, to direct the antenna in the optimum direction for transmission and reception at a particular location. Transmission and/or reception data from a second directable antenna can be used to aim the first directable antenna.

Abstract: A system for producing an image includes a MW (microwave) transmitter, configured to transmit a MW towards an object, and a MW receiver, configured to detect a MW signal received from the object. A processor is programmed to produce an image of the object by compensating both phase shifts and amplitude losses for frequency dependency in a plurality of detected MW signals.

Abstract: An efficient RADAR imaging method that is able to detect an object within an interested area. This method uses electromagnetic waves transmitted by one or many transmitters to illuminate the interested area, and then estimates the phase shift of the scattered wave of an object according to the path that the electromagnetic wave propagated. By reversing the phase of the obtained scattered signal to the transmitters' position, an image is constructed for the entire interested area according to the correlation of signals in all channels. The present method works in the frequency domain. It produces a microwave image by using the phase and magnitude of the obtained signal, or using the phase information only. Other unique features include the way it synthesizes the signals obtained in multiple channels and at multiple frequencies. Its overwhelming high efficiency makes rapid microwave imaging and real-time imaging possible.

Abstract: A directable antenna system includes at least one directable antenna which has an omnidirectional antenna at a center, an inner frequency selective surface centered around the omnidirectional antenna, and an outer frequency selective surface spaced from the inner frequency selective surface. An antenna control unit can vary antenna beamwidth by changing states of active elements of the inner and the outer frequency selective surfaces. The system may include a searchable database, for example, to direct the antenna in the optimum direction for transmission and reception at a particular location. Transmission and/or reception data from a second directable antenna can be used to aim the first directable antenna.

Abstract: A microwave (MW) system includes an object support adapted to support an object, a MW transmitter, a MW receiver, an outer rotation unit, an inner rotation unit, a controller and a computation processor. The outer rotation unit includes an outer ring, having a ring shape, with an outer ring mount, upon which one of either an antenna of the MW transmitter or an antenna of the MW receiver is mounted. The inner rotation unit comprises an inner ring, having a ring shape, with an inner ring mount, upon which the other of an antenna of the MW transmitter or an antenna of the MW receiver is mounted. The controller is configured to independently control both the rotation of the inner ring and the outer ring. The computation processor is configured to receive data including MW data representative of MW scattered field detected by the MW receiver.

Abstract: An efficient RADAR imaging method that is able to detect an object within an interested area. This method uses electromagnetic waves transmitted by one or many transmitters to illuminate the interested area, and then estimates the phase shift of the scattered wave of an object according to the path that the electromagnetic wave propagated. By reversing the phase of the obtained scattered signal to the transmitters' position, an image is constructed for the entire interested area according to the correlation of signals in all channels. The present method works in the frequency domain. It produces a microwave image by using the phase and magnitude of the obtained signal, or using the phase information only. Other unique features include the way it synthesizes the signals obtained in multiple channels and at multiple frequencies. Its overwhelming high efficiency makes rapid microwave imaging and real-time imaging possible.

Abstract: A microwave (MW) system includes an object support adapted to support an object, a MW transmitter, a MW receiver, an outer rotation unit, an inner rotation unit, a controller and a computation processor. The outer rotation unit includes an outer ring, having a ring shape, with an outer ring mount, upon which one of either an antenna of the MW transmitter or an antenna of the MW receiver is mounted. The inner rotation unit comprises an inner ring, having a ring shape, with an inner ring mount, upon which the other of an antenna of the MW transmitter or an antenna of the MW receiver is mounted. The controller is configured to independently control both the rotation of the inner ring and the outer ring. The computation processor is configured to receive data including MW data representative of MW scattered field detected by the MW receiver.

Abstract: Microwave imaging apparatus and method for completely imaging the human body (or portions thereof) in sufficient detail to render a timely and accurate medical diagnosis by trained medical professionals. The data conversion processes presented will not require physicians and radiologists to learn to use image data in a format they are not familiar with. Hounsfield encoded and/or MRI intensity encoded medical images in the DICOM format are provided from reconstructed dielectric images obtained from raw scattering data. This allows for the exchange of information created from microwave imaging techniques to be implemented with existing diagnostic tools and analysis techniques. Furthermore, methods are presented for converting image data with Hounsfield encoded units to an image with dielectric encoded units.

Abstract: A distributed imaging system uses non-ionizing radiation in the form of microwaves to image the body. This non-ionizing radiation is safer for a patient than traditional x-rays. The majority of image processing takes place in a centralized computing environment which receives microwave image data from many remote data acquisition sites (such as imaging centers, radiology groups, and/or doctor's offices). The centralized computing environment is specially configured to receive microwave image data from many sites and produce microwave images based on the received microwave image data. The microwave images may then be sent back to the acquisition site and/or to other sites for viewing and evaluation. This relieves the image data acquisition site of the burden and expense of having specialized high speed computer equipment that is necessary to produce microwave images.

Abstract: Microwave imaging apparatus and method for completely imaging the human body (or portions thereof) in sufficient detail to render a timely and accurate medical diagnosis by trained medical professionals. The data conversion processes presented will not require physicians and radiologists to learn to use image data in a format they are not familiar with. Hounsfield encoded and/or MRI intensity encoded medical images in the DICOM format are provided from reconstructed dielectric images obtained from raw scattering data. This allows for the exchange of information created from microwave imaging techniques to be implemented with existing diagnostic tools and analysis techniques. Furthermore, methods are presented for converting image data with Hounsfield encoded units to an image with dielectric encoded units.

Abstract: Microwave imaging apparatus and method for completely imaging the human body (or portions thereof) in sufficient detail to render a timely and accurate medical diagnosis by trained medical professionals. The data conversion processes presented will not require physicians and radiologists to learn to use image data in a format they are not familiar with. Hounsfield encoded and/or MRI intensity encoded medical images in the DICOM format are provided from reconstructed dielectric images obtained from raw scattering data. This allows for the exchange of information created from microwave imaging techniques to be implemented with existing diagnostic tools and analysis techniques. Furthermore, methods are presented for converting image data with Hounsfield encoded units to an image with dielectric encoded units.

Abstract: Microwave imaging apparatus and method for completely imaging the human body (or portions thereof) in sufficient detail to render a timely and accurate medical diagnosis by trained medical professionals. The data conversion processes presented will not require physicians and radiologists to learn to use image data in a format they are not familiar with. Hounsfield encoded and/or MRI intensity encoded medical images in the DICOM format are provided from reconstructed dielectric images obtained from raw scattering data. This allows for the exchange of information created from microwave imaging techniques to be implemented with existing diagnostic tools and analysis techniques. Furthermore, methods are presented for converting image data with Hounsfield encoded units to an image with dielectric encoded units.