A microwave imaging system processes scattered electromagnetic fields in the
microwave region to create images. It is an alternative or complementary imaging
tool that can be used in breast cancer imaging. It employs non-ionising radiation
and during measurement, compression of the scanned body part is avoided. These
benefits potentially lead to safer and more comfortable examinations. It also has the
potential to be both sensitive and specific to detect small tumors, whilst being much
lower cost than current methods, such as magnetic resonant imaging, mammography
and ultrasound. This thesis reports a multi-layer active antenna array for breast
imaging using microwaves from 3 GHz to 8 GHz. The proposed structure resolves
the outstanding problem in the design of large active antenna arrays for tissue imaging,
namely, the isolation of the antennas from the electronic circuits. A ground
plane within the multi-layer design separates the antenna array from the electronics
array while providing shielding to the antennas from the back and improved power
coupling into the tissue. The possibility of a high-speed vertical connector to provide
interconnection between the antenna array and the mixer array is investigated
and measurements show that it could be utilized for the frequency range from 3 GHz
to 8 GHz. / Thesis / Master of Applied Science (MASc)
| Identifer | oai:union.ndltd.org:mcmaster.ca/oai:macsphere.mcmaster.ca:11375/27054 |
| Date | January 2021 |
| Creators | Tyagi, Vartika |
| Contributors | Nikolova, Natalia, Chen, James, Electrical and Computer Engineering |
| Source Sets | McMaster University |
| Language | English |
| Detected Language | English |
| Type | Thesis |
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