UWB Active Antenna for Microwave Breast Imaging Sensing Arrays

An ultrawideband (UWB) active slot antenna for tissue sensing arrays is developed and measured to operate from 3 to 8 GHz. The sensing element reported here is to be used in the imaging of the breast. It integrates a low-noise amplifier (LNA) with a printed-slot antenna to achieve gain enhancement o...

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Bibliographic Details
Published inIEEE antennas and wireless propagation letters Vol. 18; no. 10; pp. 1951 - 1955
Main Authors Foroutan, Farzad, Nikolova, Natalia K.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.10.2019
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Active antenna
active radio sensor
Amplification
antenna array
Antenna arrays
Antenna measurements
biased-switched array
Detection
Microstrip antennas
Microwave antenna arrays
microwave imaging
Pins
printed-slot antenna
Prototypes
Slot antennas
Ultra wideband antennas
Ultrawideband
ultrawideband (UWB)
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Summary:An ultrawideband (UWB) active slot antenna for tissue sensing arrays is developed and measured to operate from 3 to 8 GHz. The sensing element reported here is to be used in the imaging of the breast. It integrates a low-noise amplifier (LNA) with a printed-slot antenna to achieve gain enhancement of about 20 dB. The first prototype integrates the biasing of the LNA on the same board as the antenna. The second prototype uses an external bias tee providing dc power to the LNA through the coaxial connector of the active antenna. Both prototypes achieve the expected gain enhancement in comparison with the passive antenna element.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2019.2929016