Improving the Signal Propagation at 2.4 GHz Using Conductive Membranes

When IEEE 802.11 at 2.4-GHz signal crosses different surfaces, it is generally reduced, but we have seen that it does not happen for all materials. Conductive membranes are able to transport electric charges when they are submerged into water with electrolytes, so we take profit of their features in order to know in which cases the received signal strength indicator (RSSI) can be improved. In order to achieve our goal, the RSSI is measured at different distances using different environments for the membranes, air, and water environment with different conductivities (distillated water, tap water, and salty water). Results show that different membranes environment produce different signal strengths. Moreover, they can be positive or negative depending on the environment of the membranes and the distance from the access point. In some cases, we registered an increase of more than 14 dBm of the signal when we were using those membranes.

[1]  Jaime Lloret,et al.  IEEE 802.11a/b/g/n short-scale indoor wireless sensor placement , 2014, Int. J. Ad Hoc Ubiquitous Comput..

[2]  Thomas C. Henderson,et al.  Target Localization and Autonomous Navigation Using Wireless Sensor Networks—A Pseudogradient Algorithm Approach , 2014, IEEE Systems Journal.

[3]  Ammar Hawbani,et al.  Zigzag Coverage Scheme Algorithm & Analysis for Wireless Sensor Networks , 2013, Netw. Protoc. Algorithms.

[4]  Joel J. P. C. Rodrigues,et al.  Underwater Wireless Communications in Freshwater at 2.4 GHz , 2013, IEEE Communications Letters.

[5]  Ala I. Al-Fuqaha,et al.  A Precise Indoor Localization Approach based on Particle Filter and Dynamic Exclusion Techniques , 2013, Netw. Protoc. Algorithms.

[6]  A. Bernardes,et al.  Water recovery from acid mine drainage by electrodialysis , 2013 .

[7]  Dharma P. Agrawal,et al.  Accurate Distance Estimation Using Fuzzy based combined RSSI/LQI Values in an Indoor Scenario: Experimental Verification , 2012, Netw. Protoc. Algorithms.

[8]  Bingcheng Jiang,et al.  The Effect of Combined Exposure of 900 MHz Radiofrequency Fields and Doxorubicin in HL-60 Cells , 2012, PloS one.

[9]  Jaime Lloret,et al.  Study of the Optimum Frequency at 2.4GHz ISM Band for Underwater Wireless Ad Hoc Communications , 2012, ADHOC-NOW.

[10]  Joel J. P. C. Rodrigues,et al.  Underwater Wireless Sensor Communications in the 2.4 GHz ISM Frequency Band , 2012, Sensors.

[11]  Jaime Lloret,et al.  Indoor IEEE 802.11g Radio Coverage Study , 2012, ICDS 2012.

[12]  Sandra Sendra,et al.  IEEE 802.11g Radio Coverage Study for Indoor Wireless Network Redesign , 2012 .

[13]  Jaime Lloret,et al.  Underwater Communications in Wireless Sensor Networks using WLAN at 2.4 GHz , 2011, 2011 IEEE Eighth International Conference on Mobile Ad-Hoc and Sensor Systems.

[14]  Wireless radio frequency detection of greatly simplified polymeric membranes based on a multifunctional ionic liquid , 2011 .

[15]  Jaime Lloret,et al.  WLAN IEEE 802.11a/b/g/n Indoor Coverage and Interference Performance Study , 2011 .

[16]  Jaime Lloret,et al.  IEEE 802.11a/b/g/n Indoor Coverage and Performance Comparison , 2010, 2010 6th International Conference on Wireless and Mobile Communications.

[17]  Ian S. Metcalfe,et al.  In situ catalyst activity control in a novel membrane reactor-Reaction driven wireless electrochemical promotion of catalysis , 2010 .

[18]  Miguel Garcia,et al.  A Hybrid Stochastic Approach for Self-Location of Wireless Sensors in Indoor Environments , 2009, Sensors.

[19]  Miguel Garcia,et al.  The Development of Two Systems for Indoor Wireless Sensors Self-location , 2009, Ad Hoc Sens. Wirel. Networks.

[20]  N A Kononenko,et al.  Characterization of ion-exchange membrane materials: properties vs structure. , 2008, Advances in colloid and interface science.

[21]  Ke‐long Huang,et al.  A discussion on ion conductivity at cation exchange membrane/solution interface , 2008 .

[22]  Tao Yang,et al.  Quantitative study of the effect of electromagnetic field on scale deposition on nanofiltration membranes via UTDR. , 2007, Water research.

[23]  J. Lloret,et al.  Wireless Sensors Self-Location in an Indoor WLAN Environment , 2007, 2007 International Conference on Sensor Technologies and Applications (SENSORCOMM 2007).

[24]  E. I. Belova,et al.  Coupled convection of solution near the surface of ion-exchange membranes in intensive current regimes , 2007 .

[25]  R K Nagarale,et al.  Recent developments on ion-exchange membranes and electro-membrane processes. , 2006, Advances in colloid and interface science.

[26]  T. Xu.  Ion exchange membranes: State of their development and perspective , 2005 .

[27]  B. Smitha,et al.  Solid polymer electrolyte membranes for fuel cell applications¿a review , 2005 .

[28]  Y. Ikada,et al.  Effect of a static magnetic field on ion transport in a cellulose membrane. , 2004, Journal of colloid and interface science.

[29]  L. Bromberg,et al.  Ion-exchange membranes in extraction processes , 1993 .