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Design of Small-sized and Low-cost Front End to Medical Microwave Radiometer.

Publication ,  Journal Article
Klemetsen, O; Birkelund, Y; Maccarini, PF; Stauffer, P; Jacobsen, SK
Published in: Progress in Electromagnetics Research Symposium : [proceedings]. Progress in Electromagnetics Research Symposium
January 2010

We have investigated the possibility of building a Dicke radiometer that is inexpensive, small-sized, stable, high sensitivity and consists of readily available microwave components. The selected frequency band is at 3-4 GHz and can be used for breast cancer detection, with sufficient spatial resolution. We have found microwave components that are small (< 5mm × 5 mm) and provide sufficient sensitivity. We have built two different Dicke radiometers: One is of conventional design with Dicke switch at front end to select antenna or noise rererence and the other with a low noise amplifier before the Dicke Switch. We have tested this concept with simulations and built prototypes. The two designs provide a gain of approximately 50 dB, and bandwidth of about 500 MHz. One of the designs has a stability μ > 1 and the other design provide instability μ < 1 for a part of the pass band. The prototypes are tested for sensitivity after calibration in two different known temperature waterbaths. The results show that the design with the low noise amplifier before the Dicke switch has 36% higher sensitivity than the other design with Dicke switch in front.

Duke Scholars

Published In

Progress in Electromagnetics Research Symposium : [proceedings]. Progress in Electromagnetics Research Symposium

EISSN

1931-7360

ISSN

1931-7360

Publication Date

January 2010

Volume

2010

Start / End Page

932 / 936
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Klemetsen, O., Birkelund, Y., Maccarini, P. F., Stauffer, P., & Jacobsen, S. K. (2010). Design of Small-sized and Low-cost Front End to Medical Microwave Radiometer. Progress in Electromagnetics Research Symposium : [Proceedings]. Progress in Electromagnetics Research Symposium, 2010, 932–936.
Klemetsen, O., Y. Birkelund, P. F. Maccarini, P. Stauffer, and S. K. Jacobsen. “Design of Small-sized and Low-cost Front End to Medical Microwave Radiometer.Progress in Electromagnetics Research Symposium : [Proceedings]. Progress in Electromagnetics Research Symposium 2010 (January 2010): 932–36.
Klemetsen O, Birkelund Y, Maccarini PF, Stauffer P, Jacobsen SK. Design of Small-sized and Low-cost Front End to Medical Microwave Radiometer. Progress in Electromagnetics Research Symposium : [proceedings] Progress in Electromagnetics Research Symposium. 2010 Jan;2010:932–6.
Klemetsen, O., et al. “Design of Small-sized and Low-cost Front End to Medical Microwave Radiometer.Progress in Electromagnetics Research Symposium : [Proceedings]. Progress in Electromagnetics Research Symposium, vol. 2010, Jan. 2010, pp. 932–36.
Klemetsen O, Birkelund Y, Maccarini PF, Stauffer P, Jacobsen SK. Design of Small-sized and Low-cost Front End to Medical Microwave Radiometer. Progress in Electromagnetics Research Symposium : [proceedings] Progress in Electromagnetics Research Symposium. 2010 Jan;2010:932–936.

Published In

Progress in Electromagnetics Research Symposium : [proceedings]. Progress in Electromagnetics Research Symposium

EISSN

1931-7360

ISSN

1931-7360

Publication Date

January 2010

Volume

2010

Start / End Page

932 / 936