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RF Parameters Characterization of a Flexible Cu-PDMS-Cu Patch Antenna

Athirah Mohd Ramly(1*), Norun Abdul Malek(2), Ibrahim Siti Noorjannah(3), Ahmad Anwar Zainuddin(4)

(1) Electrical and Computer Engineering Department, Faculty of Engineering, International Islamic University Malaysia, Malaysia
(2) Electrical and Computer Engineering Department, Faculty of Engineering, International Islamic University Malaysia, Malaysia
(3) Electrical and Computer Engineering Department, Faculty of Engineering, International Islamic University Malaysia, Malaysia
(4) Electrical and Computer Engineering Department, Faculty of Engineering, International Islamic University Malaysia, Malaysia
(*) Corresponding author



This paper presents a newly developed flexible Polydimethylsiloxane (PDMS)-Copper (CU) patch antenna. The circular-shaped antenna consists of a 21.28mm radial size Cu patch embedded on a PDMS square substrate. PDMS has a low loss tangent of 0.004 and a relative permittivity of 2.74 that will enhance the RF parameters of the flexible antenna. There are three layers of material used to build the antenna. The first and the third layers are made from Cu tape and function as the ground and patch respectively. Meanwhile, the sandwiched layer is the PDMS substrate. However, several limitations of the antenna were observed, including low adhesiveness between layers, which made it impossible to perform metal and dielectric depositions. Thus, a thin layer of PDMS has been built on top of a patch layer to increase the adhesive strength between the copper patch and the PDMS substrate. The paper also discussed the return loss of the antenna with and without sandwich in planar, bending in x-axis and y-axis. The measurements using a vector network analyzer (VNA) demonstrated that the sandwich antenna can resonate at 2.33GHz with a low return loss of 42dB. The work is a proof of the principle that the PDMS substrate can be proposed as a good substrate for antenna in conformal applications.
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Antenna; Circular Patch; Patch Antenna; Polydimethylsiloxane; Conformal Antenna

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J. Trajkovikj, J. F. Zürcher and A. K. Skrivervik, "Soft and flexible antennas on permittivity adjustable PDMS substrates,” Loughborough Antennas & Propagation Conference (LAPCI

Q. Liu, K. L. Ford, R. Langley, A. Robinson and S. Lacour, "Stretchable antennas," 6th European Conference on Antennas and Propagation (EUCAP), pp. 168-171, Prague, 2012.

W. Moulder, Y. Zhou, E. Apaydin, L. Dai, R. Emrick, P.I. J. L. Volakis, “Polymer Based Antennas for Next Generation Microwave and Millimeter Wave Systems Motivation and Goals,” 2009.

S. Hage-Ali, N. Tiercelin, P. Coquet, R. Sauleau, V. Preobrazhensky and P. Pernod, "Millimeter-wave patch array antenna on ultra-flexible micromachined Polydimethylsiloxane (PDMS) substrate," IEEE Antennas and Propagation Society International Symposium , pp. 1-4, Charleston, SC, 2009.

Z. Wang, L. Zhang, Y. Bayram and J. L. Volakis, "Embroidered Conductive Fibers on Polymer Composite for Conformal Antennas," IEEE Transactions on Antennas and Propagation, vol. 60, no. 9, pp. 4141-4147, Sept. 2012.

A. S. M. Alqadami and M. F. Jamlos, "Design and development of a flexible and elastic UWB wearable antenna on PDMS substrate," IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE), pp. 27-30, Johor Bahru, 2014.

H. A. Rahman, S. K. A. Rahim, M. Abedian and N. Najib, "Design of a flexible antenna using printed silver loaded epoxy on PDMS/plastic substrate for wearable applications," 2016 10th European Conference on Antennas and Propagation (EuCAP), Davos, 2016, pp. 1-4.

A. S. Kashkool, H. Al-Rizzo, A. I. Hammoodi and A. A. Isaac, "Effects of flexible substrates on the performance of UWB planar monopole antennas," 2016 IEEE Conference on Antenna Measurements & Applications (CAMA), Syracuse, NY, 2016, pp. 1-4.

S. Morris, A. R. Chandran, N. Timmons and J. Morrison, "Design and performance of a flexible and conformal PDMS Dipole antenna for WBAN applications," 2016 46th European Microwave Conference (EuMC), London, 2016, pp. 84-87.

Alqadami, A. S. M., Jamlos, M. F., Soh, P. J., & Kamarudin, M. R. “Polymer (PDMS-Fe3O4) magneto-dielectric substrate for a MIMO antenna array”. Applied Physics A: Materials Science and Processing, 122(1), 1-7. , 2016.

A. S. M. Alqadami, M. F. Jamlos, P. J. Soh and G. A. E. Vandenbosch, "Assessment of PDMS Technology in a MIMO Antenna Array," in IEEE Antennas and Wireless Propagation Letters, vol. 15, no. , pp. 1939-1942, 2016.

M. N. Ramli, P. J. Soh, M. F. Jamlos, H. Lago, N. M. Aziz, A. A. A. Al-hadi,”Dual-band wearable fluidic antenna with metasurface embedded in a PDMS substrate,” in Applied Physics A Material Science & Processing, Appl. Phys. A., Springer-Verlag Berlin Heidelberg, 2017

G.J. Hayes, J.-H. So, A. Qusba, M.D. Dickey, G. Lazzi, Flexible liquid metal alloy (EGaIn) microstrip patch antenna. IEEE Trans.Antennas Propag. 60, 2156 (2012)

S. M. Kamali, E. Arbabi, A. Arbabi, Y. Horie, A. Faraon,” Tunable dielectric metasurfaces using elastic substrates,” 2016 Conference on Lasers abd Electro-Optics (CLEO), San Jose, California, USA, pp. 2, 2016.

A. S. M. Alqadami, M. F. Jamlos, H. Lago and O. J. Babarinde, "Bandwidth enhancement of a microstrip antenna array using magneto-dielectric polymer substrate (PDMS-Fe3O4)," 2014 IEEE Symposium on Wireless Technology and Applications (ISWTA), Kota Kinabalu, 2014, pp. 152-155.

F. Namin, T. Spence, D. Werner and E. Semouchkina, "Broadband,Miniaturized Stacked-Patch Antennas for L-Band Operation Based on Magneto-Dielectric Substrates," Antennas and Propagation, IEEE Transactions on, vol. 58, no. 9, pp. 2817-2822, 2010.

A. S. M. Alqadami and M. F. Jamlos, "Compact and conformal multilayer antenna based on polymer nanocomposite substrate," 2015 IEEE International RF and Microwave Conference (RFM), Kuching, 2015, pp. 180-182.

D. Upadhyay and R. P. Dwivedi, "Antenna miniaturization techniques for wireless applications," 2014 Eleventh International Conference on Wireless and Optical Communications Networks (WOCN), Vijayawada, 2014, pp. 1-4.

A. Trippe, S. Bhattacharya, J. Papapolymerou,”Compact microstrip antennas on a high relative dielectric constant substrate at 60 GHz,” in Antenna and Propagation (APSURSI), 2011 IEEE International Symposium on, pp. 519-520, 2011.

J. Colburn, Y. Rahmat-Samii, “Patch antennas on externally perforated high dielectric constant substrates,” Antennas and Propagation, IEEE Transaction on, vol. 47, no.12, pp 1785-1794, 1999.

C. A. Balanis, Antenna Theory Analysis and Design, (Wiley, Vol. 28, no. 3. 2005, p. 1117).

F. Tel, “Fraserverbundwerkstoffe Materiaux composites materials,” 2011. [Online]. Retrieved from:

J. Wu, Q. Dan and S. Liu, "Effect of viscoelasticity of PDMS on transfer printing,"16th International Conference on Electronic Packaging Technology (ICEPT), pp. 759-764, Changsha, 2015.

Park, J. Y., Yoo, S. J., Lee, E. J., Lee, D. H., Kim, J. Y., & Lee, S. H, “Increased poly (dimethylsiloxane) stiffness improves viability and morphology of mouse fibroblast cells.,” Biochip Journal, 4(3), September 2010, 230–236.

Wu, J., Wang, R., Yu, H., Li, G., Xu, K., Tien, N. C., Li, D. Inkjet-printed microelectrodes on PDMS as biosensors for functionalized microfluidic systems. Lab Chip, 15, 690–695, 2015.

D. Fuard, T. Tzvetkova-Chevolleau, S. Decossas, P. Tracqui, P. Schiavone, Optimization of poly-di-methyl-siloxane (PDMS) substrates for studying cellular adhesion and motility, Microelectronic Engineering, Volume 85, Issues 5–6, May–June 2008, Pages 1289-1293, ISSN 0167-9317.

S. Prauzner-Bechcicki, J. Raczkowska, E. Madej, J. Pabijan, J. Lukes, J. Sepitka, J. Rysz, K. Awsiuk, A. Bernasik, A. Budkowski, M. Lekka, PDMS substrate stiffness affects the morphology and growth profiles of cancerous prostate and melanoma cells, Journal of the Mechanical Behavior of Biomedical Materials, Volume 41, January 2015, Pages 13-22, ISSN 1751-6161

J. A. Andriambeloson and P. G. Wiid, "A 3D-printed PLA plastic conical antenna with conductive-paint coating for RFI measurements on MeerKAT site," IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC), Turin, 2015, pp. 945-948.

M. L. Oberhart, Y. T. Lo and R. Q. H. Lee, "New simple feed network for an array module of four microstrip elements," Electronics Letters, vol. 23, no. 9, pp. 436-437, April 23 1987.

Soliman, M., Dwairi, M., Sulayman, I., Almalki, S., A Comparative Study for Designing and Modeling Patch Antenna with Different Electromagnetic CAD Approaches, (2016) International Journal on Communications Antenna and Propagation (IRECAP), 6 (2), pp. 90-95.

Sahoo, A., Mishra, G., Jena, M., Mangaraj, B., Optimal Design and Comparative Study of Circular Patch Antennas Using Different Feeds for WLAN and WiMAX Applications, (2016) International Journal on Communications Antenna and Propagation (IRECAP), 6 (3), pp. 188-196.

Baccouch, C., Bouchouicha, D., Sakli, H., Aguili, T., Patch Antenna on a Solar Cell for Satellite Communications, (2016) International Journal on Communications Antenna and Propagation (IRECAP), 6 (6), pp. 348-353.

Slimani, A., Bennani, S., El Alami, A., Harkat, H., Conception and Optimization of Patch Array Antenna for WiMAX Applications Using Stubs and Slots Techniques Matching, (2015) International Journal on Communications Antenna and Propagation (IRECAP), 5 (1), pp. 39-45.

Arora, R., Kumar, A., Khan, S., Arya, S., Design Analysis and Comparison of HE and E Shaped Microstrip Patch Antennas, (2014) International Journal on Communications Antenna and Propagation (IRECAP), 4 (1), pp. 27-31.

Tabakh, I., Jorio, M., El Amrani El Idrissi, N., Mazri, T., Design and Optimization of a New Slotted Patch Antenna for RFID Applications, (2016) International Journal on Communications Antenna and Propagation (IRECAP), 6 (1), pp. 33-38.


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