Abstract
The paper presents a novel technique to detect the solvents in water
like sugar, salt, and its combination using a wideband CPW fed
microstrip antenna with periodic EBG ground structure. The antenna is
designed and fabricated to operates at the bandwidth of 3 GHz with a
stable gain of 9 dBi maintaining VSWR<2. The uniquely designed
antenna works as a sensor in its near field to sense the solvents in
water in terms of resonant frequency and reflection method in wider
bandwidth. The technique also detects the changes in the temperature of
the soft drinks as a function of reflection characteristics. This
technique will be useful for finding the percentage of solvents in soft
drinks before consumption. The sensing technique is without physical
contact with the solution and chemical process. Therefore it is a
healthy way to find the ingredients in solutions like soft drinks. The
technique will be useful to the food regulation boards to limit the
contents of beverages and cold drinks.