Based on the three cascaded SPDT switches of Design 2, the insertion loss was less than -2 dB and return loss was more than -10 dB. As result, Design 2 is the best topology after considering the tradeoff between isolation and return loss performances. The design was based on single pole double throw (SPDT) switch. Therefore, this paper presents the performance analysis of four different RF switch topologies (Design 1, 2, 3 and 4) using discrete PIN diode in SC-79 package. Thus, it is important to get the best performance of UWB RF switch in this application. In this system, eight antennas are required with the support of RF switches. ![]() In designing a microwave imaging system for medical application, it can use a monostatic radar approach by transmitting a Gaussian pulse (with an ultra-wideband (UWB) frequency). Span>Microwave imaging is an emerging technology in the medical application which have similar functions as X-ray, Magnetic Resonance Imaging (MRI), and Computed Tomography scan (CT scan).
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