Active Microwave Imaging Is Explored As an Imagingmodality For Early Detection of Breast Cancer. When Exposed to Microwaves,Breast Tumor Exhibits Electrical Properties That Are Significantly Differentfrom That of Healthy Breast Tissues. the Two Approaches of Active Microwaveimaging — Confocal Microwave Technique With Measured Reflected Signals Andmicrowave Tomographic Imaging With Measured Scattered Signals Are Addressedhere. Normal and Malignant Breast Tissue Samples of Same Person Are Subjectedto Study Within 30 Minutes of Mastectomy. Corn Syrup Is Used As Couplingmedium, As Its Dielectric Parameters Show Good Match With That of the Normalbreast Tissue Samples. As Bandwidth of the Transmitter Is an Important Aspectin the Time Domain Confocal Microwave Imaging Approach, Wideband Bowtie Antennahaving 2:1 Vswr Bandwidth of 46% Is Designed For the Transmission and Receptionof Microwave Signals. Same Antenna Is Used For Microwave Tomographic Imagingtoo at the Frequency of 3000 Mhz. Experimentally Obtained Time Domain Resultsare Substantiated By Finite Difference Time Domain (Fdtd) Analysis. 2-Dtomographic Images Are Reconstructed With the Collected Scattered Data Usingdistorted Born Iterative Method. Variations of Dielectric Permittivity Inbreast Samples Are Distinguishable from the Obtained Permittivity Profiles. In This Dissertation, an Adaptive Microwave Concept Isdemonstrated For Breast Cancer Applications. the General Approach Is to Detectand Identify the Tumor-Specific Res ...