S.V. Shynu

Integration of Microstrip Patch Antenna With Polycrystalline Silicon Solar Cell

The implementation of a polycrystalline silicon solar cell as a microwave groundplane in a low-profile, reduced-footprint microstrip patch antenna design for autonomous communication applications is reported. The effects on the antenna/solar performances due to the integration, different electrical conductivities in the silicon layer and variation in incident light intensity are investigated. The antenna sensitivity to the orientation of the anisotropic solar cell geometry is discussed.

A microstrip printed dipole solar antenna using polycrystalline silicon solar cells

A novel printed dipole solar antenna design with an integrated balun is proposed for the first time with high efficiency polycrystalline silicon solar cells is presented in this paper. The optimum orientation of the silver DC bus bars of the solar cell is determined in order to achieve best antenna performance. Good solar antenna performance similar to that of ordinary printed dipoles with PEC reflectors is achieved.

Design of a tunable compact antenna for digital video broadcasting handheld terminals

A tunable compact printed monopole antenna for digital video broadcast handheld terminals systems is presented. The antenna comprises a two segment inductor-loaded monopole strip connected to a plate on the opposite side of the substrate. By appropriate adjustment of inductor values the working frequency is shifted from 915 MHz to 470 MHz. The dimensions of the proposed monopole antenna can be significantly reduced by over 56% in comparison with the conventional monopole antenna and its dimension is 24 mm × 120 mm. The radiation patterns are omnidirectional. The peak gains of the proposed monopole antenna at 470 MHz, 600 MHz and 860MHz are −1.5dBi, 0.74dBi, 2.0 dBi respectively.

A metal plate solar antenna for UMTS pico-cell base station

A simple low-cost solar antenna design for UMTS base station is proposed. The optimum orientation of the silver DC bus bars of the solar cell is found to be Ag-parallel, in order to achieve best antenna performance. Good antenna performance similar to that of ordinary shorted patch antennas is obtained.

On surface currents in a polycrystalline solar cell acting as ground plane for microstrip patch antennas

The integration of communication devices with photovoltaic (PV) technology leads to the development of autonomous communication systems distinguished by immunity to grid breakdowns and eco-friendliness.

A pattern reconfigurable slot antenna with hybrid feed

In this paper we investigate the design and operating principle of a pattern reconfigurable multi-mode slot antenna with a hybrid feed. The slot antenna is excited by an orthogonal arrangement of a co-planar waveguide (CPW) fed circular disc and a microstrip fed square patch. The design objective is to be able to change the direction of the main lobe by feeding the two orthogonal elements with different phases.

Novel Techniques for the Integration of Antennas and Photovoltaic Cells

Various novel approaches to the integration of antenna and photovoltaic technologies are proposed. These include the use of polycrystalline solar cells as groundplane for microstrip patch antennas as well as for reflectors of half-wave dipole antennas. Transparent materials were also evaluated as antenna radiating elements, allowing greater solar efficiency. A novel technique illustrating how emitter-wrap-through rear contact solar cells can be used as a folded-dipole antenna, which is located in the focal line of a parabolic solar concentrator, to provide high solar efficiency as well as high antenna gain, is presented.