Articles you may be interested inSingle-step in-situ synthesis and optical properties of ZnSe nanostructured dielectric nanocomposites

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In the present work, a rectangular microstrip patch antenna having 100 μm slits on the conductor parellel to and 2.5 mm from the radiating edges on both sides is designed.The conductor sections from the slits to the outer edges are elevated at an angle from the conductorplane. Prominent return loss peaks are obtained at 4.23 GHz and 10.26 GHz with return losses of −36 dB and −32 dB, respectively. A large frequency envelope with at least −10 dB return loss in the range 6.84 GHz to 9.24 GHz for elevation angle 65° and 8.45 GHz to 10.54 GHz for elevation angle 85° are obtained. The frequencies can be varied by changing the elevation angles. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1285–1287, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27560

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Planar patch antenna with a 100-mm slit parallel to radiating edge is designed resulting in significant size reduction of 76% and dual-frequency operation. Tuning in the frequency range of 2.33-2.78 GHz is achieved for the lower operating frequency by introducing partial slit of varying lengths with comparable size reduction. The upper resonant frequency is higher than the resonant frequency of the simple patch by about 15-20% which is also tunable in the frequency range of 4.9-5.11 GHz, albeit not independently of the lower frequency.