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- Title
UWB Antenna with Enhanced Directivity for Applications in Microwave Medical Imaging.
- Authors
Awan, Dawar; Bashir, Shahid; Khan, Shahid; Al-Bawri, Samir Salem; Dalarsson, Mariana
- Abstract
Microwave medical imaging (MMI) is experiencing a surge in research interest, with antenna performance emerging as a key area for improvement. This work addresses this need by enhancing the directivity of a compact UWB antenna using a Yagi-Uda-inspired reflector antenna. The proposed reflector-loaded antenna (RLA) exhibited significant gain and directivity improvements compared to a non-directional reference antenna. When analyzed for MMI applications, the RLA showed a maximum increase of 4 dBi in the realized gain and of 14.26 dB in the transmitted field strength within a human breast model. Moreover, it preserved the shape of time-domain input signals with a high correlation factor of 94.86%. To further validate our approach, another non-directional antenna with proven head imaging capabilities was modified with a reflector, achieving similar directivity enhancements. The combined results demonstrate the feasibility of RLAs for improved performance in MMI systems.
- Subjects
MICROWAVE imaging; REFLECTOR antennas; DIAGNOSTIC imaging; ANTENNAS (Electronics); DIRECTIONAL antennas; ULTRA-wideband antennas
- Publication
Sensors (14248220), 2024, Vol 24, Issue 4, p1315
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s24041315