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Analysis of Ultra-Wideband Elliptical Monopole with Modified Ground for Applications in Radiometric Measurements


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DOI: https://doi.org/10.15866/irecap.v5i1.5272

Abstract


Elliptical monopole antennas are commonly proposed in the literature especially for their ultra-wideband performance. In this work an elliptical monopole is studied with regard to the ellipticity ratio lower bound and a simplified formula for the major axis length is derived for maintaining wideband performance. The monopole is intended for black body radiometric (passive) measurements in the 1-5 GHz band so a number of conditions have to be met. Modifications to the ground plane were explored in order to minimize the total dimensions of the structure to fit in the front end of a microwave radiometer probe and enhance the performance in the lower frequencies of the band of interest. The antenna is intended for measurements in close proximity so the near field behavior of the structure is studied. The measured VSWR of the proposed structure is in good agreement with the simulated values.
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Keywords


Biomedical Antenna; Elliptical Monopole; Ellipticity Ratio; HFSS; Measurements

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References


B. Stec, A. Dobrowolski, W. Susek, “Multifrequency microwave thermograph for biomedical applications”, Journal of telecommunications and Information Technology, Volume 1, 2004, Pages 117–122.
http://dx.doi.org/10.1109/tbme.2003.821054

Nikolopoulos, C. D., Baklezos, A. T., & Capsalis, C. N. (2014). Auto Reconfigurable Patch Antenna for Biomedical Single Channel Multi-Frequency Microwave Radiometry Applications. Progress In Electromagnetics Research C, Volume 49, Pages 19-29.
http://dx.doi.org/10.2528/pierc14021904

Kanj, H., & Popovic, M. (2008). A novel ultra-compact broadband antenna for microwave breast tumor detection. Progress In Electromagnetics Research, Volume 86, Pages 169-198.
http://dx.doi.org/10.2528/pier08090701

Scotto di Clemente, F.; Stephan, R.; Hein, M.A., "Ultra-wideband miniaturised high permittivity-matched antennas for biomedical diagnostic," Antennas and Propagation (EuCAP), 2013 7th European Conference on , vol., no., pp.2896,2899, Gothenburg, SE, April 2013

D.Andreuccetti, R.Fossi, C.Petrucci, “An internet resource for the calculation of the dielectric properties of body tissues in the frequency range 10 Hz - 100 GHz”, Italian National Research Council Institute for Applied Physics, Website at http://niremf.ifac.cnr.it/tissprop/. IFAC-CNR, Florence (Italy), 1997. Based on data published by C.Gabriel et al. in 1996.

Agrawall, N. P., Kumar, G., & Ray, K. P. (1998). Wide-band planar monopole antennas. Antennas and Propagation, IEEE Transactions on, Volume 46 ( Issue 2), Pages 294-295.
http://dx.doi.org/10.1109/8.660976

Mirkamali, A., Hall, P. S., & Soleimani, M. (2006). Elliptical multiple‐ring monopole antennas. Microwave and optical technology letters, 48(1), 4-8.
http://dx.doi.org/10.1002/mop.21247

Mirkamali, A., P. S. Hall, and M. Soleimani, Ground plane effect on the multiband multiple ring monopole antenna," IEEE International Workshop on Antenna Technology: Small Antennas and Novel metamaterials, IWAT, 88-91, Mar. 6-8, 2006.
http://dx.doi.org/10.1109/iwat.2006.1608982

Rashed, J., & Tai, C. T. (1991). A new class of resonant antennas. Antennas and Propagation, IEEE Transactions on, Volume 39(Issue 9 ), Pages 1428-1430.
http://dx.doi.org/10.1109/8.99054

Nikolopoulos, C.D., Capsalis, C.N., The impact of corrugations in optimized planar inverted F antennas (PIFA's), (2012) International Journal on Communications Antenna and Propagation (IRECAP), 2 (1), pp. 33-38.

Hasgall PA, Neufeld E, Gosselin MC, Klingenböck A, Kuster N, “IT’IS Database for thermal and electromagnetic parameters of biological tissues,” Version 2.5, August 1st, 2014. www.itis.ethz.ch/database.


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