A breast cancer detection technique using multi-static radar is proposed herein. Images of a breast tumour are produced using this technique, with backscatter data. A wideband antenna design suitable for a breast cancer detection system is also described. Practical measurements are performed using a network analyser and a pair of antennas that are used to simulate an array. These initial images...

Entropy based phase shift migration with de-noising algorithm for radar body area focusing imaging Hui Zhang, Yun Lu and Dirk Plettemeier Off-body Channel Measurements at 2.4 GHz and 868 MHz in an Indoor Environment Evangelos Mellios, Angelos Goulianos, Sema Dumanli, Geoffrey Hilton, Robert Piechocki and Ian Craddock Radar vertebral column imaging by inhomogeneous medium radar focusing algorith...

In order to provide observations to help decide between competing theories of Anomalous Ion Spectra (AIS) observed at several Incoherent Scattering Radar (ISR) observatories, to explore the possibility of any connection between this phenomenon and visible auroral forms, and to see if enhanced scattering is due to localised scattering structures, we have used the two antennas of the EISCAT Svalb...

Next-generation interferometric synthetic aperture radar (InSAR) systems may provide the basis for establishing an earthquake-forecasting capability within a twenty-year time frame. Such systems would need to provide data with fine temporal resolution, so the system architecture would need to allow for wide-area coverage in order to minimize the effective interferometric repeat time. This paper...

A probe-fed circularly polarized stacked patch antenna is presented and simulated by using Commercial Ansoft High Frequency Structure Simulator. The design consists of two patches and two substrates. The bottom patch is square-shaped where as the top patch is of triangularshaped. T-shaped slots parallel to the edges of the patches are inserted so that bandwidth can be improved. Enhancement of t...

We generally categorize the approaches for ultrawideband antenna array design, and consequently propose simplified concepts for antenna arrays for a high-precision, ultra-wideband FMCW radar 2-D local positioning system to obtain robustness against multi path interference, perform angle of arrival analysis, as well as instantaneous heading estimation. We focus on low-cost and mechanical robust,...

adar systems realized with a phased array antenna offer several advantages over systems using a conventional parabolic dish or mechanically steered antenna. These advantages include the production of directive beams that can be rapidly repositioned electronically, the generation of multiple independently steered antenna beams from a common aperture, the ability to make antennas conformal with t...

483 Abstract— In this study, a fan-beam microstrip array antenna for an X-band radar was designed and fabricated using a novel technique. A microstrip array structure was used to obtain a high-gain and narrow horizontal beam-width. The feeding point is located at the center of the antenna because of its 360° rotational characteristic. The measured results indicate a gain of 23dBi, and a horizon...

The use of dual polarization in meteorological radars offers significant advantages over single polarization. Recently a standard single-polarization C-band radar was upgraded to operate in dualpolarization mode. The antenna has a 4.2m diameter parabolic reflector with a prime-focus feed. A spherical Fresnel-zone holographic technique was used to obtain the radiation pattern for the upgraded an...

A high resolution airborne Synthetic Aperture Radar (SAR) has been developed at Electromagnetics Institute (EMI) for remote sensing applications. This paper considers the radiation of antennas for a SAR system from a systems perspective. The basic specifications of an idealised antenna are obtained from the required swath and tlie azimuth footprint needed for the SAR processing. The radiation f...